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U3502BM
Cordless Telephone Signal Processor
Description
The programmable cordless phone signal processor includes all necessary low-frequency parts such as microphone- and earphone amplifier, compander, preemphasis, deemphasis, scrambler, FSK modem, power-supply management. Several gains and mutes in transmit and receive direction are controlled by a serial bus while compander, pre- and deemphasis.
Features
D Symmetrical input of microphone amplifier D Symmetrical output of earpiece amplifier D Compander D Pre- and deemphasis D Data management by FSK coding D Power-supply management D Serial bus Application: CT1 plus, 900 MHz ISM USA
Block Diagram
RXI DACO RECDC
RGAIN ADJ
LPF
Deem
RXO
EXIN LOIN Oscillator 11.15 MHz Expander ETC RECO1 Divider D/A REC RECO2
FSK
VBATT
RXDAT TXDAT MIC1
MODEM
Battery low detector
MIC
MIC2 MICO
C D
Serial Bus LPF TGAIN ADJ.2 Limiter Preem TGAIN ADJ.1 Compressor COIN
VCC
TXO
GND
CTC
Figure 1. Block diagram
Ordering Information
Extended Type Number U3502BM-AFL U3502BM-AFLG3 Package SO24 SO24 Remarks Tube, MOQ 360 Taped and reeled, MOQ 2000
Rev. A1, 16-May-00
1 (16)
Preliminary Information
A A A AA A A AA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A AA A AA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AA AA AAAAAAAAAAAAAAAAA A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAA AA A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A A AA AA A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A AA A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A AA A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A AA A AA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A AA AA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A AAAAAAAAAAAAAAAAAAAAAAAAAAA A AA A AAAAAA A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A AA AA A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A A AA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
Pin 1 4 3 2 Symbol TXO MICO COIN CTC Microphone amplifier output Compressor analog input Compressor time constant control analog output Function Transmit section analog output
EXIN 11 ETC 12
Pin Description
U3502BM
2 (16)
Preliminary Information
RECO2 9 RECO1 10 MIC1 6 MIC2 5 MICO 4 COIN 3 GND 7 RXO 8 TXO 1 CTC 2
Figure 2. Pinning
15 RXI
16 n.c.
17 VBATT
18 LOIN
19 VCC
14 RECDC
21 C
22 D
23 RXDAT
24 TXDAT
13 n.c.
20 DACO
3
14181
Configuration
14728
4
14725
14727
Rev. A1, 16-May-00
2 1
14726
A A AA A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A A AA A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A AA A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A AA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A A AA A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A AA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A AA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AA A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A A AA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A AA A AA AA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAA AA A AAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAA AA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A AA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A AA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A A AA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A AAAAAAAAAAAAAAAA AA AA A AAAAAAAAAAAAAAAAA A AA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A AA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AA A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A AA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A AAAAAAAAAAAAAAAA AA A AA A A AAAAAAAAAAAAAAAAA AA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AA A AAAAAAAAAAAAAAAA A A A AA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A AAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A A AA AA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A AAAAAAAAAAAAAAAA AA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AA A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A A AA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A AA A AA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAA AA A A AAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAA A AA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAA AA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A AA
Pin 5 10 11 9 7 8 6 RECO1 RECO2 Symbol MIC2 EXIN MIC1 GND RXO Expander analog input Symmetrical output of receive amplifier Symmetrical output of receive amplifier LF analog/ digital ground Intermediate receive analog output Inverting input of microphone amplifier Function Non-inverting input of microphone amplifier
11 6 5
Rev. A1, 16-May-00 Configuration
14730
Preliminary Information
U3502BM
8
14729
14732
3 (16)
10 9
A A AA AA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A A AA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAA A A AA A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A AA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A AA A AA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A AA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A AA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A A AAAAAAAAAAAAAAAA AA A A AAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAA A AA AA AA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A AA AA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A A AA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAA A AA AA A A A AA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A AA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A AA A AA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A AA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A A AA AA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAA AA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAA AA AA A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A AA A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A AA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A AA AA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAA A A AAAAA A AAAAAAAAAAAAAAAAA A A AA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAA A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A AA
U3502BM
Pin 12 19 15 16 17 18 13 14 n.c. RECDC RXI n.c. VBATT LOIN Symbol ETC VCC Supply-voltage output for peripherals and internal supply of digital part Audio input for receive signal Not connected Battery supply Local oscillator input for TCO or SC filter oscillator: 11.15 MHz Not connected Reference-voltage generation for FSK demodulator Function Expander time constant control analog output
14 18 12
4 (16) Configuration
Preliminary Information
14733
Rev. A1, 16-May-00
AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AA A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AA A AAAAAA AA A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AA A AAAAAA AA A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AA A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AA A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AA AAAAA A A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAA A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AA A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AA A
Thermal Resistance Absolute Maximum Ratings
Parameters Supply voltage Junction temperature Ambient temperature Storage temperature Power dissipation Tamb = 60C Symbol VBatt, VCC Tj Tamb Tstg Ptot Value 5.5 +125 -25 to +75 -50 to +125 1 Unit V C C C W Rev. A1, 16-May-00 Junction ambient Pin 20 24 23 22 21 RXDAT TXDAT Symbol DACO D C Parameters SO24 Symbol RthJA Value 120 Unit K/W 5 (16)
AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A AA AAAAAAAAAAAAAAAAA A A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AA A AAAAAAAAAAAAAAAA A A AA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A A AA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AA AA A AA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAA A AA A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A A AA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A AA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AA A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A AA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A AAAAAAAAAAAAAAAA AA A AA A A AAAAAAAAAAAAAAAAA AA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A AA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A A A A AAAAAAAAAAAAAAAA AA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A AA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A AA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAA A AA A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AA A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A AA A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AA A AAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAA A AA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAA AA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A AA
Transmit data digital input Receive data digital output Data input of serial bus Clock input of serial bus Function D/A comparator output
24 23 20 21, 22
Preliminary Information
Configuration
U3502BM
AAAA A A A A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAA AAAA AA A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A AAAAAAAAA AAAAAA AAAA A A A A A AAAAA A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAA AAAAA A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAA A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAA A A A A A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAA A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAA A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAA A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAA A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AA A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAA AA A AAAA A A A A AAAA AA AA A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAA A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAA A AAAA AA A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A AA A AA A AAAAAAAAAAAAAAAAAAAA A AAAAAA A AAAA A A A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAA A A A AAAA A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAA A AA A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAA A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAA A A AA A A AAAA A A A AAAA A A A A A AAAA A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAA AAAAA A A A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAA AA AA A AAAA A A A AAAA A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAA AA A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A AA A A A A A A A A A AA A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAA A A AAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAA A AAAAAAA A AA AAAAAAAAA AAAAA A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAA AAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A AAAA A A A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A AAAA AAAA AAAAAAA AAAA AAAAAAAAA AAAA A A A AAAAA A AAAAAAAAAAAAAAAAAAAAAAAAAA AA A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A AAAA A A A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A AAAAA A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAA AAAAA A AAAAAAA A A A A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAA A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
Test conditions (unless otherwise specified): VBatt = VCC = 3.6 V, Tamb = +25C
Electrical Characteristics
U3502BM
6 (16)
Expander (see figure 4) EEA GEA0 GEA1 GEA2 1 0 0 0 Gain-reference level VEXIN = -10 dBVrms Change of gain when expander BCOMP = 1 is bypassed Gain tracking VEXIN = -20 dBVrms VEXIN = -30 dBVrms VEXIN = -35 dBVrms VEXIN = -40 dBVrms
Output impedance RXO output voltage
Audio mute
Current consumption ERX2 ERX1 ERXO EEA EDEE 0 0 0 0 0 Operating Voltage range Inactive mode VBatt = 2.9 V Standby mode RX demodulating ERX1 = 1 MODEM-signal Operating current, RX and TX ERX2 = ERX1 = ERXO = EEA completely active =EDEE = ETX = 1 Receiver - Input resistance (see figure 3) Input resistance RXImin Minimum value by maximum RGAIN (see register) Input resistance RXImax Maximum value by minimum RGAIN (see register) RX audio, GRXO = GRX1 = GRX2 = 1, GRX3 = 0 Change of RX0 signal EDEE = 0; 1 deemphasis bypass Gain adjust range Gain adjust step Output signal vs. frequency rela- 100 Hz tive to 1 kHz (0 dB) 300 Hz deemphasis bypassed 1800 Hz 3400 Hz 4350 Hz 4610 Hz Output signal versus frequency 100 Hz relative to 1 kHz (0 dB) deem300 Hz phasis enable EDEE = 1 1800 Hz 3400 Hz 4350 Hz 4610 Hz Total harmonic distortion VRXI = -10 dBV VRXI = -20 dBV
Parameters
FM = 2.5 kHz ERX0 = 0 ERX1 = 0 ERX2 = 0
Preliminary Information
Test Conditions
GEA3 1
Symbol
RXImax
RXImin
GOREC
ZRXO VRXO
(see figure 3) -0.5
GEA4 1
ETX 0
Min.
11 -0.5
-21 -41 -53
1.7
3.1 30
0.8
65
EPREE 0
15 1 0.5 0.2 -0.4 0.3 -15.1 -57 7.1 5.7 -4.8 -9.4 -27.1 -68
Typ.
-50 -60
123
3.6 60 0.3 2.6
13
35
7
0
Rev. A1, 16-May-00 Max. 11.5 100 1
-19 -39 -47
4.7 80 0.5 3.7
15 0.5
2.5 2.5
1.2
0.5
Unit
Vpp
mA
V A mA mA
dB
kW
kW
dB dB dB dB dB dB dB dB %
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Electrical Characteristics (continued)
VEXIN = step tr -20 dBVrms -14 dBVrms, measure time after step when output voltage is 0.75 times the final value Release time VEXIN = step tf 14 dBVrms -20 dBVrms, measure time after step when output voltage is 1.5 times the final value Earpiece amplifier BCOMP = 1, EEA = 1, VEXIN = 100 mVrms (see figure 4) Maximum gain GEA0 GEA1 GEA2 GEA3 1 1 1 1 GEA4 = 1 Medium gain GEA0 GEA1 GEA2 GEA3 0 0 0 0 GEA4 = 1 Minimum gain GEA0 GEA1 GEA2 GEA3 0 0 0 0 GEA4 = 0 Gain change vs. supply voltage VBatt = 3.2 V to 4.7 V Gain-adjust range Gain-adjust step Output impedance Distortion dt Output offset voltage VEXIN = 0 mVrms Output-voltage swing Increase VEXIN until distortion Vpp (peak-to-peak) (RECO1/ RECO2) is 5% Low-frequency transmitter GMIC EPREE BSCR G1TX G2TX BCOMP 1 1 1 1000 1000 1 Microphone amplifier VMIC = 10 mVrms, fIN = 1 kHz (see figure 5) Gain High gain: GMIC = 1 Low gain: GMIC = 0 Gain change vs. supply voltage VBatt = 3.2 V to 4.7 V Differential input impedance Output impedance Distortion VMIC = 10 mVrms dt Output noise VMIC = 0 Vrms high gain (inputs (psophmetrically weighted) closed across 200 W) TX audio VCOIN = -20 dBVrms (see figure 6) Gain GTX (TXO, COIN) Change of gain TXO EPREE = 0 Gain between 3.2 and 4.7 V TX gain-adjust range adj. 1 TX gain-adjust step adj. 1 Attack time
Rev. A1, 16-May-00 Input impedance Gain change versus supply voltage
Parameters
VBatt = 3.2 V to 4.7 V
Preliminary Information
Test Conditions Symbol -200 4.8
9.5 -0.5
Min.
2.5 -0.5 -1
31 23 -0.2 41
-0.2
-12
0.8
0.8
19
4
ETX 1
Typ.
-11
5.5 0 0 15 1
5.0
32 24 0 75 10
31 1 10
20
16
16
5
U3502BM
Max.
14.5 0.5
33 25 0.2 103 35 1 50
1.2 30 1 200
-10
1.2
8.5 0.5 1
0.2
21
6
dB kW W % Vrmsp
Unit
dB dB dB W % mV V
kW dB
dB dB dB dB dB
dB
dB
dB
dB
ms
ms
7 (16)
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Electrical Characteristics (continued)
U3502BM
8 (16)
100 Hz 300 Hz 1800 Hz 3400 Hz 4350 Hz 7300 Hz Gain versus frequency with pre- 100 Hz emphasis relative to 1-kHz refer- 300 Hz ence level 0 dB 1800 Hz 3400 Hz 4350 Hz 7300 Hz Total band ripple 300 to 3400 Hz preemphasis bypassed Limiter Output voltage Increase VCOIN until d = 5% at (peak-to-peak) TX0 then measure VTX0 Mute ETX = 0, VCOIN = -10 dBV attenuation at TX0 output Output impedance Compander / compressor (see figure 6) BSCR EPREE G2TX0 G2TX1 G2TX2 G2TX3 1 0 0 1 0 1 Input impedance BCOMP = 1 Gain reference level G0TX VCOIN = -10 dBVrms Gain change when compresser VCOIN = -10 dBVrms is bypassed BCOMP = 1 Gain tracking VCOIN = -30 dBVrms VCOIN = -50 dBVrms VCOIN = -60 dBVrms VCOIN = -70 dBVrms Attack time VCOIN = step -30 dBVrms -18 dBVrms measure time after step when output voltage is 1.5 times the final value Release time VCOIN = step -18 dBVrms -30 dBVrms measure time after step when output voltage is 0.75 times the final value Parameters LIM gain-adjust range adj. 2 LIM gain-adjust step adj. 2 TX gain versus frequency (preemphasis bypassed) relative to 1-kHz reference level 0 dB Test Conditions Symbol G0TX ETX 1 tf tr G1TX0 0 9 1 -0.5 Min. -11 -21 -22 1.2 0.8 65 7 G2TX1 0 14 5.5 Typ. 15 1 -3.4 -0.6 0.3 0.0 -3.8 -65 -9.3 -5.9 4.4 7.7 5.9 -54.4 14.4 1.68 -30 3.5 10
Preliminary Information
G1TX2 1 22 10 0.5
Rev. A1, 16-May-00
Max. -9 -19 -28 2.3 1.2 14 2 G1TX3 0 kW dB dB Unit dB dB Vpp dB kW dB dB dB dB ms ms
AA A A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAA A A A A AAAAA A A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAA A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAA A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAA A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAA AAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAA A A AA A A A A A AAAAAA A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAA A AA A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA A A AA A A A A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAA A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAA A AAAA A A A A AAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAA A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAA A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAA A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AA A A A A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAA A A AAAAA A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AA A A AA A AAAA A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAA AAAA AAA A A A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAA A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAA A AAAAAAAAA AAAA A A A A AA A A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAA AAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAA A AA A A A A A A AA AA A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAA AAA A A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAA AAAAA AAAAAAAAAAAAAAAAA AA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAA A AAAA AAAAA A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAA
Electrical Characteristics (continued)
Output signal - Distortion - Offset level Logical part (see figure 9) Inputs: C, D, TXDAT Low-voltage input High-voltage input Input leakage current (0 < VI < VCC) Input LOIN Input leakage current pin XCK (0 < VI < VCC) Outputs: DACO, RXDAT Output low lol = 10 A Output high loh = -10 A Serial bus Data set-up time Data hold time Clock low time Clock high time Hold time before transfer condition Data low pulse on transfer condition Data high pulse on transfer condition Output signal frequency Signal distortion TXDAT --- TXOUT 2100 Hz --- = 0 1300 Hz --- = 1 FSK - modulator TXDAT --- TXO Output signal level TXDAT --- TXOUT Parameters FSK modem (1200 Bauds) FSK-demodulator Input signal discriminator IFIN1-IFIN2----RXDAT IFIN = 450 kHz VIFIN = 0.5 mVrms df = 2.4 kHz ERX1 = 1 GDEM = 0 (high gain) GRX3 = 1 (+1dB) ETX = 1 EFSK = 1 TXDAT = 0 TXOUT = 2100 Hz TXDAT = 1 TXOUT = 1300 Hz TXDAT = 0 TXOUT = 2100 Hz TXDAT = 1 TXOUT = 1300 Hz TXDAT = 0 TXDAT = 1 Test Conditions Symbol tsud thd tcl tch teon teof teh 0.9 VCC 2100 1300 1720 Min. 0.87 0.2 0.2 0.1 0 2 2 0.1 2.5 -1 1.5 -5 Typ. 2
Rev. A1, 16-May-00
0.1 VCC 1660 Max. 1.54 1.54 0.5 1 5 2 2
Preliminary Information
U3502BM
Unit
Vpp
Vpp
V V mA mA
mA
% Hz
Hz Hz
9 (16)
ms ms ms ms ms ms ms % % V
U3502BM
Electrical Characteristics (continued)
AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAA A AAAA A A A A AAAAAAAAAAAAAAAAAAAAAAAA A AAAAA A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAA AAAAAA A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAA A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAA A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAA A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAA A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAA AAAAA A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAA A AAAA A A A A A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAA AAAAA A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAA AAAAA A A AAAA A A A A AAAAA A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAA AAAA A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAA A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAA A A A A AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA AAAAAAAAAAAAAAAAAAAAAAAAAA
DA0 to 6 = 1, RBAT = 1 DA0 to 6 = 27 BIN, RBAT = 1 DA0 to 6 = 1, RBAT = 0 DA0 to 6 = 0, RBAT = 0 3.8 3.05 4.85 3.93 3.5 852.5 100 2.9 3.15 220 3.95 3.2 5.05 4.1 7.5 952.5 200 3.0 3.25 250 35 4.1 3.35 5.25 4.27 11.5 1052.5 300 3.1 3.35 280 50 V V V V mV mV mV V V mV W DA0 to 6 = 1, RBAT = 1 DA0 to 6 = 27 BIN, RBAT = 1 DA0 to 6 = 0, RBAT = 0
Parameters Battery management Max batlow Min batlow over switch Max bathigh Min bathigh Adjust step Max - Min MINBL - SWOFF Battery switch Off threshold On threshold Hysteresis Switch Ron
Test Conditions
Symbol
Min.
Typ.
Max.
Unit
Max batlow Min batlow Max bathigh Min bathigh Adjust step Max - Min MINBL - SWOFF Off threshold On threshold Hysteresis Switch Ron
: : : : : : : : : : :
MAXBL (battery voltage when all DAC bits are high, low range) MINBL (battery voltage when DAC bits are 0011011, low range) MAXBH (battery voltage when all DAC bits are high, high range) MINBH (battery voltage when all DAC bits are low, high range) Adjust step MAXBH - MINBH MINBL - SWOFF SWOFF (off threshold of the battery switch) SWON (on threshold of the battery switch) SWON - SWOFF Switch Ron (resistance of the switch transistor, when switch is "ON")
10 (16)
Rev. A1, 16-May-00
Preliminary Information
U3502BM
Test Circuits
CTC RXI 100 F VIF 15 8 RXO 470 nF 100 nF 12.5 k VCOIN Figure 3. RX audio Figure 6. TX audio
Tbit
2
22 21
D C TXO Setup
470 nF
COIN
3
1
100 k
14187
RECO2 1 k
9
22
D Setup
1
0
1
Tbit = 833 ms
RECO1 10 EXIN 11
21
C
1
0
1
100 nF ETC VEXIN 470 nF
14185
12
294.2 ms
238.2 ms
Figure 7. Jitter of rise and fall time edge of FSK modem Figure 4. Expander
20 k 100 nF
MICO 4 22 MIC2 5 21 MIC1 100
14186
D Setup
VMIC
100 6
C
Figure 5. Microphone amplifier
Rev. A1, 16-May-00
11 (16)
Preliminary Information
U3502BM
Serial Bus Interface
The circuit is remoted by an external microcontroller trough the serial bus. The data is a 12-bit word: A3 - A0: address of the destination register (0 to 15) D7 - D0: contents of register The data line must be stable when the clock is high and data must be shifted serially.
96 11787
Data Microprocessor Clock
D C
After 12 clock periods, the transfer to the destination register is generated (internally) by a low to high transition of the data line when the clock is high.
Data (D)
Figure 8. Connection lines
D0
D1
D2
A1
A2
A3
Clock (C) Ist word
13317
2nd word Transfer condition
Word transmission Figure 9. Serial bus transmission
Data 4 Clock 8
0 Address decoder 15 Commands Figure 10. Block diagram
Data (D) A1 A2 A3 D0
96 11789
128 latches
(C) Clock tsud thd tch tcl teon teh teoff
13318
Figure 11. Serial bus timing
12 (16)
Rev. A1, 16-May-00
Preliminary Information
U3502BM
Content of Internal Registers
The register have the following structure: D7 D6 D5 D4 D3 D2 D1 D0
R0: Reference for D/A converter MUXDA MUXDA: DA(6:0): DA6 DA5 DA4 DA3 DA2 DA1 DA0
D/A multiplexing, "1" enables battery detection Reference voltage D/A
R1: Gain adjustment RECLF GEA3 GEA(3:0): GRX(3:0): GEA2 GEA1 GEA0 GRX3 GRX2 GRX1 GRX0
Gain earpiece amplifier (see also R5) Gain adjustment RX
R2: Gain adjustment TRANLF G2TX3 G2TX2 G2TX1 G2TX0 G1TX3 G1TX2 G1TX1 G1TX0
G2TX(3:0): Gain adjustment TX after limiter G1TX(3:0): Gain adjustment TX R3: Enable functions receive free EDDE: EEA: ERXO: ERX(1:2): EDDE EEA ERXO ERX1 free free ERX2
Enable deemphasis (disables bypass) Enable earpiece amplifier Enable RXO output Enable parts of RXLF
R4: Enable functions transmit free RBAT: BCOMP: BSCR: GMIC: EFSK: EPREE: ETX: R5: free GEA4: MTX: MTX free free free free GEA4 free RBAT BCOMP BSCR GMIC EFSK EPREE ETX
Battery detection high/low range Bypass compressor and expander It is mantadory to keep 1 Gain of microphone preamplifier Enable modulator of FSK modem Enable pre-emphasis (disables bypass) Enable TX low frequency part
Gain earpiece amplifier MSB (see also R1) Mute transmit section
Rev. A1, 16-May-00
13 (16)
Preliminary Information
U3502BM
Application Circuit
RXI
DACO
RECDC
RGAIN ADJ
LPF
Deem
RXO
EXIN LOIN Expander ETC RECO1
Oscillator 11.15 MHz
11.15 MHz
Divider
D/A
REC RECO2 RXDAT C TXDAT MIC1
FSK
VBATT
MODEM
Battery low detector C Serial D Bus LPF TGAIN ADJ.2 Limiter Preem TGAIN ADJ.1
MIC
MIC2 MICO
Compressor
COIN
VCC
TXO
GND
CTC
Front end supply
m C supply
Figure 12. Application circuit
14 (16)
Rev. A1, 16-May-00
Preliminary Information
U3502BM
Package Information
Package SO24
Dimensions in mm
15.55 15.30 9.15 8.65 7.5 7.3
2.35 0.25 0.10 13.97 24 13 0.25 10.50 10.20
0.4 1.27
technical drawings according to DIN specifications 13037
1
12
Rev. A1, 16-May-00
15 (16)
Preliminary Information
U3502BM
Ozone Depleting Substances Policy Statement
It is the policy of TEMIC Semiconductor GmbH to 1. Meet all present and future national and international statutory requirements. 2. Regularly and continuously improve the performance of our products, processes, distribution and operating systems with respect to their impact on the health and safety of our employees and the public, as well as their impact on the environment. It is particular concern to control or eliminate releases of those substances into the atmosphere which are known as ozone depleting substances (ODSs). The Montreal Protocol (1987) and its London Amendments (1990) intend to severely restrict the use of ODSs and forbid their use within the next ten years. Various national and international initiatives are pressing for an earlier ban on these substances. TEMIC Semiconductor GmbH has been able to use its policy of continuous improvements to eliminate the use of ODSs listed in the following documents. 1. Annex A, B and list of transitional substances of the Montreal Protocol and the London Amendments respectively 2. Class I and II ozone depleting substances in the Clean Air Act Amendments of 1990 by the Environmental Protection Agency (EPA) in the USA 3. Council Decision 88/540/EEC and 91/690/EEC Annex A, B and C (transitional substances) respectively. TEMIC Semiconductor GmbH can certify that our semiconductors are not manufactured with ozone depleting substances and do not contain such substances.
13
We reserve the right to make changes to improve technical design and may do so without further notice. Parameters can vary in different applications. All operating parameters must be validated for each customer application by the customer. Should the buyer use TEMIC Semiconductors products for any unintended or unauthorized application, the buyer shall indemnify TEMIC Semiconductors against all claims, costs, damages, and expenses, arising out of, directly or indirectly, any claim of personal damage, injury or death associated with such unintended or unauthorized use. Data sheets can also be retrieved from the Internet: http://www.temic-semi.com
TEMIC Semiconductor GmbH, P.O.B. 3535, D-74025 Heilbronn, Germany Telephone: 49 (0)7131 67 2594, Fax number: 49 (0)7131 67 2423
16 (16)
Rev. A1, 16-May-00
Preliminary Information

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