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Features
* * * * * * * *
High Dynamic Range for AM and FM Integrated AGC for AM and FM High Intercept Point 3rd Order for FM FM Amplifier Adjustable to Various Cable Impedances High Intercept Point 2nd and 3rd Order for AM Low Noise Output Voltage Low Power Consumption Low Output Impedance AM
1. Description
The ATR4251 is an integrated low-noise AM/FM antenna amplifier with integrated AGC in BiCMOS2S technology. The device is designed in particular for car applications, and is suitable for windshield and roof antennas. Figure 1-1. Block Diagram QFN24 Package
VREF1
24
Low-noise, High-dynamicrange AM/FM Antenna Amplifier IC ATR4251
FM IN
23
FM FM GAIN GND2 OUT
22 21 20
AGC IN Paddle = GND
19
NC* GND AGC1 AGC2 VREF2 AMIN
1
FM amplifier BAND GAP AGC
18
NC* VS AGCCONST VREF4 AMOUT1 GND1
2
17
3
16
4
15
5
AM
14
6 7 8
AGC (AM)
9 10 11 12
13
T NC* NC* CREG AGC AGC AMIN AM CONST * Pin must not be connected to any other pin or supply chain except GND.
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Figure 1-2.
Block Diagram SSO20 Package
FMGAIN FMIN VREF1 GND AGC1 AGC2 VREF2 AMIN1 CREG
1 2 3 4 5 6 7 8 9 AM AGC (AM) SSO20 Band gap AGC FM amplifier
20 GND2 19 FMOUT 18 AGCIN 17 VS 16 AGCCONST 15 VREF4 14 AMOUT1 13 GND1 12 TCONST 11 AGCAM
AGCAMIN 10
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2. Pin Configuration
Figure 2-1. Pinning QFN24
VREF1 FMIN FMGAIN GND2 FMOUT AGCIN NC GND AGC1 AGC2 VREF2 AMIN
1 2 3 4 5 6 78 24 23 22 21 20 19 18 17 16 15 14 13 9 10 11 12
NC VS AGCCONST VREF4 AMOUT1 GND1
Table 2-1.
Pin 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 Paddle
Pin Description QFN24
Symbol NC GND AGC1 AGC2 VREF2 AMIN NC CREG AGCAMIN AGCAM TCONST NC GND1 AMOUT1 VREF4 AGCCONST VS NC AGCIN FMOUT GND2 FMGAIN FMIN VREF1 GND Function Pin must not be connected to any other pin or supply chain except GND. Ground FM AGC output for pin diode AGC output for pin diode Reference voltage for pin diode AM input, impedance matching Pin must not be connected to any other pin or supply chain except GND. AM - AGC time constant capacitance 2 AM - AGC input AM - AGC output for pin diode AM - AGC - time constant capacitance 1 Pin must not be connected to any other pin or supply chain except GND. Ground AM AM output, impedance matching Bandgap FM AGC time constant Supply voltage Pin must not be connected to any other pin or supply chain except GND. FM AGC input FM output Ground FM gain adjustment FM input Reference voltage 2.7V Ground Paddle
NC CREG AGCAMIN AGCAM TCONST NC
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Figure 2-2.
Pinning SSO20
FMGAIN FMIN VREF1 GND AGC1 AGC2 VREF2 AMIN1 CREG AGCAMIN 1 2 3 4 5 6 7 8 9 10 20 19 18 17 16 15 14 13 12 11 GND2 FMOUT AGCIN VS AGCCONST VREF4 AMOUT1 GND1 TCONST AGCAM
Table 2-2.
Pin 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
Pin Description SSO20
Symbol FMGAIN FMIN VREF1 GND AGC1 AGC2 VREF2 AMIN1 CREG AGCAMIN AGCAM TCONST GND1 AMOUT1 VREF4 AGCCONST VS AGCIN FMOUT GND2 Function FM gain adjustment FM input Reference voltage 2.7V FM ground AGC output for PIN diode AGC output for PIN diode Reference voltage for PIN diode AM input, impedance matching AM AGC constant capacitance 2 AM input, AM AGC AM AGC output for PIN diode AM AGC constant capacitance 1 AM ground AM output, impedance matching Band gap 6V FM AGC constant Supply voltage FM AGC input FM output FM ground
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3. Functional Description
The ATR4251 is an integrated AM/FM antenna impedance matching circuit. It compensates cable losses between the antenna (for example windshield, roof, or bumper antennas) and the car radio which is usually placed far away from the antenna. AM refers to the long wave (LW), medium wave (MW) and short wave (SW) frequency bands (150 kHz to 30 MHz) that are usually used for AM transmission, and FM means any of the frequency bands used world-wide for FM radio broadcast (70 MHz to 110 MHz). Two separate amplifiers are used for AM and FM due to the different operating frequencies and requirements in the AM and FM band. This allows the use of separate antennas (for example, windshield antennas) for AM and FM. Of course, both amplifiers can also be connected to one antenna (for example, the roof antenna). Both amplifiers have automatic gain control (AGC) circuits in order to avoid overdriving the amplifiers under large-signal conditions. The two separate AGC circuits prevent strong AM signals from blocking FM stations, and vice versa.
3.1
AM Amplifier
Due to the long wavelength in AM bands, the antennas used for AM reception in automotive applications must be short compared to the wavelength. Therefore these antennas do not provide 50 output impedance, but have an output impedance of some pF. If these (passive) antennas are connected to the car radio by a long cable, the capacitive load of this cable (some 100 pF) dramatically reduces the signal level at the tuner input. In order to overcome this problem, ATR4251 provides an AM buffer amplifier with low input capacitance (less than 2.5 pF) and low output impedance (5). The low input capacitance of the amplifier reduces the capacitive load at the antenna, and the low impedance output driver is able to drive the capacitive load of the cable. The voltage gain of the amplifier is close to 1 (0 dB), but the insertion gain that is achieved when the buffer amplifier is inserted between antenna output and cable may be much higher (35 dB). The actual value depends, of course, on antenna and cable impedance. The input of the amplifier is connected by an external 4.7 M resistor to the bias voltage (pin 7, SSO20) in order to achieve high input impedance and low noise voltage. AM tuners in car radios usually use PIN diode attenuators at their input. These PIN diode attenuators attenuate the signal by reducing the input impedance of the tuner. Therefore, a series resistor is used at the AM amplifier output in the standard application. This series resistor guarantees a well-defined source impedance for the radio tuner and protects the output of the AM amplifier from short circuit by the PIN diode attenuator in the car radio.
5
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3.2
AM AGC
The IC is equipped with an AM AGC capability to prevent overdriving of the amplifier in case the amplifier operates near strong antenna signal level, for example, transmitters. The AM amplifier output AMOUT1 is applied to a resistive voltage divider. This divided signal is applied to the AGC level detector input pin AGCAMIN. The rectified signal is compared against an internal reference. The threshold of the AGC can be adjusted by adjusting the divider ratio of the external voltage divider. If the threshold is reached, pin AGCAM opens an external transistor which controls PIN diode currents and limits the antenna signal and thereby prevents overdriving the AM amplifier IC.
3.3
FM Amplifier
The FM amplifier is realized with a single NPN transistor. This allows use of an amplifier configuration optimized on the requirements. For low-cost applications, the common emitter configuration provides good performance at reasonable bills of materials (BOM) cost(1). For high-end applications, common base configuration with lossless transformer feedback provides a high IP3 and a low noise figure at reasonable current consumption(2). In both configurations, gain, input, and output impedance can be adjusted by modification of external components. The temperature compensated bias voltage (VREF1) for the base of the NPN transistor is derived from an integrated band gap reference. The bias current of the FM amplifier is defined by an external resistor.
Notes: 1. See test circuit (Figure 8-1 on page 11) 2. See application circuit (Figure 9-1 on page 12)
3.4
FM/TV AGC
The IC is equipped with an AGC capability to prevent overdriving the amplifier in cases when the amplifier is operated with strong antenna signals (for example, near transmitters). It is possible to realize an external TV antenna amplifier with integrated AGC and external RF transistor. The bandwidth of the integrated AGC circuit is 900 MHz. FM amplifier output FMOUT is connected to a capacitive voltage divider and the divided signal is applied to the AGC level detector at pin AGCIN. This level detector input is optimized for low distortion. The rectified signal is compared against an internal reference. The threshold of the AGC can be adjusted by adjusting the divider ratio of the external voltage divider. If the threshold is reached, pin AGC1 opens an external transistor which controls the PIN diode current, this limits the amplifier input signal level and prevents overdriving the FM amplifier.
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4. Absolute Maximum Ratings
Stresses beyond those listed under "Absolute Maximum Ratings" may cause permanent damage to the device. This is a stress rating only and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. Reference point is ground (pins 4 and 13 for SSO20 and pins 2, 13, 21 and Paddle for QFN24 package). Parameters Supply voltage Power dissipation, Ptot at Tamb = 90C Junction temperature Ambient temperature SSO20 package Ambient temperature QFN24 package Storage temperature ESD HMB ESD MM Symbol VS Ptot Tj Tamb Tamb Tstg All pins All pins Value 12 550 150 -40 to +90 -40 to +105 -50 to +150 2000 200 Unit V mW C C C C V V
5. Thermal Resistance
Parameters Junction ambient, soldered on PCB, dependent on PCB Layout for SSO 20 package Junction ambient, soldered on PCB, dependent on PCB Layout for QFN package Symbol RthJA RthJA Value 92 40 Unit K/W K/W
6. Operating Range
Parameters Supply voltage Ambient temperature SSO20 package Ambient temperature QFN 24 package Symbol VS Tamb Tamb Min. 8 -40 -40 Typ. 10 Max. 11 +90 +105 Unit V C C
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7. Electrical Characteristics
See Test Circuit, Figure 8-1 on page 11; VS = 10V, Tamb = 25C, unless otherwise specified. Pin numbers in () are referred to the QFN package. No. 1.1 1.2 1.3 1.4 2 2.1 2.2 2.3 2.4 Parameters Supply currents Reference voltage 1 output Reference voltage 2 output Reference voltage 4 output Input capacitance Input leakage current Output resistance Voltage gain f = 1 MHz Pin 14 (14), R78 = 4.7 M, B = 9 kHz, CANT = 30 pF 150 kHz 200 kHz 500 kHz 1 MHz Vs = 10V, 50 load, fAMIN = 1 MHz, input voltage = 120 dBV Vs = 10V, 50 load, fAMIN = 1 MHz, input voltage = 120 dBV Ivref4 = 3 mA Ivref1 = 1 mA Test Conditions Pin 17 (17) 3 (24) 7 (5) 15 (15) Symbol IS VRef1 VRef2 VRef4 Min. 11 2.65 0.38 VS 6.0 Typ. 14 2.8 0.4 VS 6.25 Max. 17 2.95 0.42 VS 6.5 Unit mA V V V Type* A A B A
AM Impedance Matching 150 kHz to 30 MHz (The Frequency Response from Pin 8 to Pin 14) f = 1 MHz Tamb = 85C 8 (6) 8 (6) 14 (14) 8/14 (6/14) ROUT A 4 0.94 5 0.97 CAMIN 2.2 2.45 2.7 40 8 1 pF nA D C D A
2.5
Output noise voltage (rms value)
14
VN1 VN2 VN3 VN4
-8 -9 -11 -12 -60
-6 -7 -9 -10 -58
dBV dBV dBV dBV dBc
C
2.6
2nd harmonic
AMOUT1
C
2.7 3 3.1 3.2 3.3 3.4 3.5 3.6 3.7 3.8
3rd harmonic AM AGC Input resistance Input capacitance AGC input voltage threshold 3 dB corner frequency
AMOUT1
-53
-50
dBc
C
10 (9) f = 1 MHz f = 1 MHz AGC threshold increased by 3 dB 10/11 (9/10) 10/11 (9/10) 10/11 (9/10) 12 (11) 10 (9) 10 (9)
RAGCAMIN CAGCAMIN VAMth
40 2.6 75 10
50 3.2 77 3.8 79
k pF dBV MHz
D D B D A A C A
Minimal AGCAM output ViHF = 90 dBV at pin voltage 10 (9) Maximal AGCAM output ViHF = 0V at pin 10 (9) voltage Maximal AGCAM output ViHF = 0V at pin 10 (9) voltage(1) T = +85C Maximum AGC sink current ViHF = 0V at pin 10 (9) U (pin 12 (11)) = 2V
VAGC VAGC VAGC IAMsink
VS - 2.4 VS - 0.2 VS - 0.4 -150
VS - 2.1 VS - 0.1 VS - 0.3 -120
VS - 1.7
V V V
-90
A
*) Type means: A = 100% tested, B = 100% correlation tested, C = Characterized on samples, D = Design parameter Notes: 1. Leakage current of PIN diode can be adjusted by an external resistor between pin 11 and VS 2. Demo board measurements (see Figure 8-1 on page 11 "Common Emitter Configuration") 3. Demo board measurements (see Figure 9-1 on page 12 "Common Base Configuration")
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7. Electrical Characteristics (Continued)
See Test Circuit, Figure 8-1 on page 11; VS = 10V, Tamb = 25C, unless otherwise specified. Pin numbers in () are referred to the QFN package. No. 3.9 Parameters Transconductance of Level detector IP3 at level detector input PIN diode current generation Output resistance FM Amplifier Emitter voltage Emitter voltage Supply current limit Maximum output voltage Input resistance Output resistance Power gain(2) Output noise voltage (emitter circuit)(2) OIP3 (emitter circuit)(2) Gain
(3) (3)
Test Conditions ViHF = VAMth at pin 10 (9) Figure 9-2 on page 13, 1 MHz and 1,1MHz, 120 dBV d(20 log IPin-diode) / dUPin12 T = 25C, UPin12 = 2V
Pin 10/12 (9/11)
Symbol I AM sin k ------------------V AMth
Min.
Typ. 20
Max.
Unit A ---------------mV rms dBV
Type* C
3.10
10 (9)
150
170
D
3.11 3.12 4 4.1 4.2 4.3 4.4 4.5 4.6 4.7 4.8 4.9 4.10 4.11 4.12 5 5.1 5.2 5.3 5.4 5.5 5.6 Notes:
30 9 (8) 1 (22) ROUT 27 1.85 1.8 I19 12 RFMIN RFMOUT G VN IIP3 50 50 5 -5.1 140 6 2.8 35 1.95 2.0 45 2.05 2.2 37
dB/V k V V mA Vpp dB dBV dBV dB dB dBV
D D A C D D D D A D C C C C
T = -40C to +85C R = 56 VS = 10V f = 100 MHz f = 100 MHz f = 100 MHz f = 100 MHz, B = 120 kHz f = 98 + 99 MHz
1 (22) 19 (20) 19 (20) 2 (23) 19 (20) FMOUT/ FMIN 19 (20) 19 (20)
Noise figure OIP3
(3)
f = 98 + 99 MHz
148
Parameters Dependent of External Components in Application Circuit: RFMIN, RFMOUT, G, VN, IIP3 FM AGC AGC threshold AGC1 output voltage AGC1 output voltage AGC2 output voltage AGC2 output voltage Input resistance f = 100 MHz f = 900 MHz AGC1 active, Vpin16 (16) = 5V AGC1 inactive, Vpin16 (16) = 1.7V AGC2 active, Vpin16 (16) = 1.7V AGC2 inactive, Vpin16 (16) = 5V 18 (19) 5 (24) 5 (24) 6 (4) 6 (4) 18 (19) Vth1,100 Vthl,900 VAGC VAGC VAGC VAGC RPin18 81 81 83 85 85 87 dBV dBV V V V V 25 k B B C C C C D
VS - 2.1V VS - 1.9V VS - 1.7V VS - 0.2V VS
VS - 2.1V VS - 1.9V VS - 1.7V VS - 0.2V 17 VS 21
*) Type means: A = 100% tested, B = 100% correlation tested, C = Characterized on samples, D = Design parameter 1. Leakage current of PIN diode can be adjusted by an external resistor between pin 11 and VS 2. Demo board measurements (see Figure 8-1 on page 11 "Common Emitter Configuration") 3. Demo board measurements (see Figure 9-1 on page 12 "Common Base Configuration")
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7. Electrical Characteristics (Continued)
See Test Circuit, Figure 8-1 on page 11; VS = 10V, Tamb = 25C, unless otherwise specified. Pin numbers in () are referred to the QFN package. No. 5.7 5.8 Parameters Input capacitance IP3 at AGC input Test Conditions F = 100 MHz Figure 9-2 on page 13, 100 MHz and 105 MHz, VGen = 120 dBV 900 MHz and 920 MHz VGen = 120 dBV ViHF = 0V ViHF = Vth1,100, dIPin16(16) / dUPin18(19) UPin16 = 3V, dUPin5(3) / dUPin16(16), -dUPin6(4) / dUPin16(16) Pin 18 (19) 18 (19) Symbol CPin18 Min. 1.5 Typ. 1.75 150 Max. 1.9 Unit pF dBV Type* D D
5.9 5.10 5.11
IP3 at AGC input Max. AGC sink current Transconductance
18 (19) 16 IPin16 dIPin16 / dUPin18 -11 0.8
148 -9 1.0 -7 1.3
dBV A mA/V (rms)
D C C
5.12
Gain AGC1, AGC2
0.5
0.56
0.6
C
*) Type means: A = 100% tested, B = 100% correlation tested, C = Characterized on samples, D = Design parameter Notes: 1. Leakage current of PIN diode can be adjusted by an external resistor between pin 11 and VS 2. Demo board measurements (see Figure 8-1 on page 11 "Common Emitter Configuration") 3. Demo board measurements (see Figure 9-1 on page 12 "Common Base Configuration")
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8. Test Circuit FM/AM
Figure 8-1.
VS
Common Emitter Configuration
4.7
+
10 F 100 nF 470 nF 500 pF 5 k
AMOUT1
4.7
+
10 F 100 nF 150 nH
AGCIN
GND
22 pF
4.7 F 2.2 F
AGCCONST
22 pF
+
+
471)
1 nF
AMOUT1
20
15
14
13
19
18
17
16
12
AGCAM
FMOUT
VREF4
AGCIN
FMOUT GND2
TCONST
GND1
VS
FM amplifier
AGC
AM
11
+
15 nF
2.2 nF
Band gap
270
AGC1
FMGAIN
VREF1
AGC2
FMIN
VREF2
AMIN1
GND
CREG
68
4.7 M 1 H 22 56 2.2 nF 2.2 nF 2.2 nF
+
1 F
10 F 33 pF Cant 220 nF
FMIN
AMINP1
50 50
AGCAMIN AMAGCIN
(1) Output impedance 50 adjustment
10
1
2
3
4
5
6
7
8
9
SSO20
AGC (AM)
11
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9. Application Circuit (Demo Board)
Figure 9-1.
R23
Common Base Configuration
+VS AM/FM_OUT
C30 100 nF 180 nH C24 100 nF 2.2 pF
(4)
+VS
VB+ 10
4.7 + C26 10 F R24 4.7 + C27
C23 100 nF
C21 2.2 F 470 nF C31 R20 33(1) L3 470 nH C12 1 nF C13 T2 BC858 R11(2) 10 k R10 100
C17 33 pF R21 100 C19 100 nF C20 1 pF(4)
L3
GND
10 F
AGCCONST
AM/FM application combined with AM AGC with the following capability FMOUT 1. Testing FM + FM AGC connector FM as input connector AM/FM_OUT as output 2. Testing AM + AM AGC connector AM as input connector AM/FM_OUT as output
C18 220 nF
+
C33
4.7 F
AMOUT1
TCONST
AGCAM
VREF4
AGCIN
GND2
GND1
19
18
17
VS
R12(2) 2.2 k
20
16
15
14
13
12
FM amplifier
AGC
AM
11 SSO20
Band gap
AGC (AM)
R3 1 k
C28 1 pF
D3
BA779-2 C29 6 2.2 nF 1 C2 2.2 nF D1 BA679 C5 2.2 nF R7 C1 2.2 pF
(2)
4
TR1
3
FMGAIN
FMIN
GND
VREF1
VREF2
AMIN1
CREG
AGC1
AGC2
+VS
D2 BA679 R2 51 R1 47 C3 100 nF L1 120 nH C4 22 pF RS1 2 T1 C6 10 nF BC858 C11 100 pF R6 R5 C7 1 F 100
(2)
R4 4.7 M
R25 68
+
C32 10 F
C10 220 nF 15 nF C8 10 k(3) 1 nF R8 3 k(3) R9
FM
AM
(1) AM Output impedance (50 adjustment) (2) Leakage current reduction (3) AM AGC threshold (4) AM AGC threshold
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AGCAMIN
10
1
2
3
4
5
6
7
8
9
ATR4251
Figure 9-2. Antenna Dummy for Test Purposes
OUTPUT 50 1 nF Gen 50
AGCIN
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10. Internal Circuitry
Table 10-1.
PIN SSO20
Equivalent Pin Circuits (ESD Protection Circuits Not Shown)
PIN QFN24 Symbol Equivalent Circuit
19
1 2 19
22 23 20
FMGAIN FMIN FMOUT
1 2
3
24
VREF1
3
4, 13, 20
2, 13, 21
GND
VS
5 6
3 4
AGC1 AGC2
5
1, 7, 12, 18
NC
7
5
VREF2
7
14
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ATR4251
Table 10-1.
PIN SSO20
Equivalent Pin Circuits (ESD Protection Circuits Not Shown) (Continued)
PIN QFN24 Symbol Equivalent Circuit
VS
8
6
AMIN1
8
9
8
CREG
9
10
10
9
AGCAMIN
11
10
AGCAM
11
15
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Table 10-1.
PIN SSO20
Equivalent Pin Circuits (ESD Protection Circuits Not Shown) (Continued)
PIN QFN24 Symbol Equivalent Circuit
12
11
TCONS
12
14
14
AMOUT1
14
15
15
15
VREF4
16
16
16
AGCCONST
17
17
VS
16
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Table 10-1.
PIN SSO20
Equivalent Pin Circuits (ESD Protection Circuits Not Shown) (Continued)
PIN QFN24 Symbol Equivalent Circuit
18
18
19
AGCIN
17
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11. Ordering Information
Extended Type Number ATR4251-TKSY ATR4251-TKQY ATR4251-PFSY ATR4251-PFQY Package SSO20 SSO20 QFN24, 4 mm x 4 mm QFN24, 4 mm x 4 mm Remarks Sticks Taped and reeled Sticks Taped and reeled
12. Package Information
Figure 12-1. SSO20
5.40.2 6.75-0.25 4.40.1
0.05+0.1
1.30.05
0.250.05 0.650.05 5.850.05
6.450.15
20
11
Package: SSO20 Dimensions in mm
technical drawings according to DIN specifications
1
10
Drawing-No.: 6.543-5056.01-4 Issue: 1; 10.03.04
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0.150.05
ATR4251
Figure 12-2. QFN24
Package: QFN 24 - 4 x 4 Exposed pad 2.15 x 2.15 (acc. JEDEC OUTLINE No. MO-220) Dimensions in mm 4 0.90.1 2.150.15
24 1 18
19
24 1
technical drawings according to DIN specifications
6 0.230.07 0.40.1
13 12 7
6
0.5 nom.
Drawing-No.: 6.543-5086.01-4 Issue: 2; 24.01.03
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13. Revision History
Please note that the following page numbers referred to in this section refer to the specific revision mentioned, not to this document. Revision No. History * * * * Figure 1-1 "Block Diagram QFN24 Package" on page 1 changed Figure 2-1 "Pinning QFN24" on page 3 changed Table 2-1 "Pin Description QFN24" on page 3 changed Table 10-1 "Equivalent Pin Circuits (ESD Protection Circuits Not Shown) on page 14 changed
4913I-AUDR-03/08
4913H-AUDR-10/07
* Section 7 "Electrical Characteristics" numbers 1.1, 1.2, 1.3, 1.4, 2.4, 3.5, 3.6, 4.3 and 5.1 on pages 8 to 9 changed * Section 7 "Electrical Characteristics" numbers 2.8 and 2.9 deleted * Figure 8-1 "Common Emitter Configuration" on page 11 changed * Figure 8-1 "Common Emitter Configuration" on page 11 changed * Figure 9-1 "Common Base Configuration" on page 12 changed * Put datasheet in a new template * Figure 8-1 "Common Emitter Configuration" on page 11 changed * Figure 8-1 "Common Base Configuration" on page 12 changed * * * * * * * * Put datasheet in a new template Figure 1-1 exchanged with figure 1-2 on pages 1 to 2 Figure 2-1 exchanged with figure 2-2 on pages 3 to 4 Table 2-1 exchanged with table 2-2 on pages 3 to 4 Section 3.1 "AM Amplifier" on page 5 changed Section 3.4 "FM AGC" on page 6 renamed in "FM/TV AGC" and changed Section 7 "Electrical Characteristics" on pages 8 to 10 changed Figure 9-1 "Common Base Configuration" on page 12 changed
4913G-AUDR-07/07
4913F-AUDR-06/07
4913E-AUDR-02/07
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Headquarters
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International
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Product Contact
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4913I-AUDR-03/08

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