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APLUS INTEGRATED CIRCUITS INC.
APR9301-V2
Single-Chip Voice Recording & Playback Device for Single 20 to 30 Second Message
Features
* Single-chip, high quality voice recording & playback solution
- No external ICs required - Minimum external components
* Non-volatile Flash memory technology
- No battery backup required - 100K record cycles (typical) - 100-year message retention (typical)
* Single message of 20 to 30 seconds, with external resistor selection
* User-friendly, easy-to-use operation - Programming & development systems not required - Level-activated recording & edge-activated playback switches * Low power consumption - Operating current: 25 mA (typical, no load) - Standby current: 1uA (typical, no load)
* Automatic power-down feature for longer battery life * Chip enable pin for simple message expansion * Single 5 V power supply 6
General Description
The APR9301 de vice offers true single-chip solid-state storage capability and requires no software or microcontroller support. It provides high-quality recording and playback with a single 20- to 30-second message. It is ideal for portable voice recorders, toys, and many other consumer and industrial applications. APLUS integrated analog/multi-level storage technology is implemented in advanced Flash non-volatile memory cells, each of which can typically store more than 256 voltage levels. The APR9301 -V2 stores and reproduces voice signals in their natural forms, eliminating the distortion that is often introduced by encoding and compression. The device combines a small size with low power consumption, nonvolatility, and ease-of-use for a cost effective solution to voice recording and playback. .
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APLUS
Functional Block Diagram
Figure 2 shows the functional block diagram for the APR9301-V2
APR9301-V2
VCCD VCCA VSSD VSSA
Figure 2 APR9301 -V2 Functional Block Diagram
Power Supplies OscR
Internal O scillator
AnaIn
Amp
S w itched C apacitor Filter
S am ple & H old C ircuit
AnaOut MicIn MicRef
A nalog W rite & R ead C ircuits
PreAmp
S w itched C apacitor Filter
N on-Volatile A nalog Storage M em ory A rray
AGC
Amp
SP+ SP-
A utom atic G ain C ontrol (A G C )
Device Control
/RecL /PlayE
/LED
Sample Application
Figure 3 shows the diagram for a single, 20-second message recording and playback application using theAPR9301 device. When pins are connected as shown in this example, the operating modes are as follows: Record Mode (Level-Activated) A single voice message of up to 20 seconds can be recorded. The /LED pin will go low during the actual recording process to provide a visual indication if an LED light is connected to this pin. The chip is in record mode as long as the /RecL pin stays low (level-activated). If the message lasts longer than 20 seconds, recording will terminate automatically after the last available memory cell is written. If the message is shorter than 20 seconds, the recording operation will stop when the the /RecL pin goes high. The speaker driver is automatically tristated during the recording operation. Messages of up to 30 seconds can be recorded by using different OscR resistor values (see Table 1).
Playback Mode (Edge-Activated) Playback always starts from the beginning of the message. The chip is in playback mode after the /PlayE pin pulses low (edge-activated). Playback will stop immediately when the /PlayE pin pulses low a second time. If the newly recorded message is shorter than the previously recorded message, the remaining portion of the previous message will not be played after the new message is played back. The input preamplifier, AGC, and main amplifier circuits are disabled during playback. Standby Mode (/CE = "0") The chip will automatically return to the standby state after recording or playback operation is completed. Power Down Mode (/CE = "1") The chip is always in standby state. No recording or playback is allowed. Current consumption is typically less than 1 uA.
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APLUS
Figure 3 Sample Application for the APR9301-V2
NC NC NC NC NC /C E O scR 52K NC NC NC NU1 V SS SP+ SP1 2 3 4 5 6 7 8 9 10 11 12 13 14 28 27 26 25 24 23 22 21 20 19 18 17 16 15 V CCD /RecL V SSD /LED NC /P layE NC A naO ut A naIn AGC M icRef M icIn VccA_R VccA_L 0.1uF 47u 1K
APR9301-V2
VC C(6VDC)
For low power applications use double pole switch.
V CC VCC 150K
0.1F
220K V CC
4.7 F
1K
22F 4.7K 0.1 F 8 Ohm Speaker E lectret M icrophone
0.1 F 4.7K Notes: NC = No Connect (must be floating). Pins 23 and 27 have internal pull-up resistors. The typical sampling frequency is 6.4 kHz with OscR = 52 kW.
Substrate should be connected to GND.
Table 1
Typical Dependence of Sampling Frequency and Total Voice Duration on OscR Resistor Value (VCCA = VCCD = 6V; VSSA = VSSD = 0V; TA = 25oC)
Typical Sampling Frequency 8 kHz 6.4 kHz 5.3 kHz 4.0 kHz Cutoff Frequency (3 dB Point) 3.4 kHz 2.7 kHz 2.3 kHz 1.7 kHz Typical Total Voice Duration 16 seconds 20 seconds 24 seconds 32 seconds
Pin 7 - OscR 38 kW 52 kW 67 kW 89 kW
g
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APLUS
Figure 4 shows the same application using external microphone biasing instead of the microphone amplifier on the APR9301 -V2 , thus bypassing the preamplifier portion of the chip function.
APR9301-V2
Figure 4 Sample Application Using External Microphone Biasing
V CC ( 6 V D C ) NC NC NC NC NC /CE O scR 52K NC NC NC NU1 V SS SP+ SP1 2 3 28 27 26 V CCD /R ecL V SSD /LED NC /P layE NC NC A naIn NC NC NC VccA_R VccA_L 0.1 F 47 F 0.1uF T1 Electret M icrophone 100K R2 22F 0.1 F 10 K 1K 2K VCC VCC V CC
APR9301-V2
4 5 6 7 8 9 10 11 12 13 14
25 24 23 22 21 20 19 18 17 16 15
8 Ohm Speaker
Notes: NC = No Connect (must be floating). Pins 23 and 27 have internal pull-up resistors. The typical sampling frequency is 6.4 kHz with OscR = 52 kW. NPN bipolar transistor, T1 model #MPS3904 or equivalent. R1 and R2 are recommended to be 30 kW and 10 kW, respectively, for typical applications.
Substrate should be connected to GND.
Electrical Characteristics
Tables 2 through 4 list Absolute Maximum Ratings, Recommended DC Characteristics, and recommended Analog Characteristics for the APR9301-V2 device.
Absolute Maximum Ratings
Stresses greater than those listed in Table 2 may cause permanent damage to the device. These specifications represent a stress rating only. Operation of the device at these or any other conditions above those specified in the recommended DC Characteristics or recommended Analog Characteristics of this specification is not implied. Operation of the device at maximum conditions for extended periods may affect reliability.
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APLUS
Table 2 Absolute Maximum Ratings.
Item
Power Supply Voltage Input Voltage Input Voltage Storage Temperature Temperature Under Bias Lead Temperature
APR9301-V2
Condition
TA = 25 C TA = 25 oC |IIN| < 20 mA <10s
o
Symbol
VCC VIN1 VIN2 TSTG TBS TLD
Min
4.5 -0.3 -1.0 -65 -65 -
Max
6.5 VCC +0.3 VCC +1.0 150 125 300
Unit
V V V
oC o
C
oC
Table 3
DC Characteristics Note 1
Item Symbol
V V
IH IL
Condition
IOH = -1.6mA IOL = 4.0mA VIH = VCC VIL = VSS
Note 2
Min
0.8 V CC 2.4 -1.0 -1.0
Typ
x -
Max
0.8 0.45 1.0 1.0
Unit
V V V V
Input High Voltage Input Low Voltage Output High Voltage Output Low Voltage Input Leakage Current Input Leakage Current Output Tristate Leakage Current
V OH V OL IIH IIL IOZ
uA uA uA
mA
VOUT = VCC or VOUT = VSS Internal Clock, No Load No Load
Operating Current Consumption Standby Current Consumption
ICC ICCS
-
25 1.0
-
uA
Table 4
Analog Characteristics Note 1
Item Symbol
V MI RMI GMI1 GMI2 VANI RANI GANI RAGC PSP VSP THD
Condition
AGC < 2.2V AGC > 3.0V AnaIn to SP+/RSP+/- = 16W RSP+/- > 16W @ 1kHz & 20mVp-p input
Min
-
Typ
10 24 -45 10 22 1 12.2 1.25 1
Max
20 -15 50 -
Unit
mVP-P kW dB dB mVP-P kW dB kW mW VP-P %
MicIn Input Voltage MicIn Input Resistance MicIn Amp Gain (1) MicIn Amp Gain (2) AnaIn Input Voltage AnaIn Input Resistance AnaIn Amp Gain AGC Output Resistance SP+/- Output Power Voltage Amplitude Across SP+/Total Harmonic Distrotion
Note 1: Typical Values: VCCD = VCCA = 6V; VSSD = VSSA = 0V; T A = 25oC Note 2: Except pins 23 and 27 which have internal pull-up resistors.
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APLUS
Figure 5 APR9301-V2 Die Bonding Pad Diagram
/C
APR9301-V2
Notes:
N
V
CC D CC
Bonding Pad Diagram & Description of Bonding Pad Coordinates
E
/R
L ec
2 NU
/L
ED
C
V
D
N
N
N C
N
N
OscR
C
N C
N
C
C
C
C
/P
la
yE
Die diagram is with respect to die center ( m). Die Dimensions: x = 214 + 1 mils y = 144 + 1 mils Die Thickness: 13.8 + 1.0 mils (350 + 25 m Pad Opening: 110 m 4.3 mils Connect substrate to ground.
APR9301-V2
AnaOut
C
NU
1 VS
SD
VS
SA
N
S VS
A
C
SP
+
SP
-
V
CC
V
A
AnaIn
A
N
CC
M
M ic In
ic
Re
AG f
C
Table 5 APR9301-V2 Bonding Pad Coordinates
Pin /CE OscR NU1 VSSD VSSA VSSA SP+ SPVCCA VCCA MicIn MicRef AGC AnaIn AnaOut /PlayE /LED NU2 /RecL VCCD VCCD Pin Name Chip Enable Oscillator Frequency-Setting Resistor Connect to Ground Digital Ground Supply Analog Ground Supply Analog Ground Supply Non-Inverting Speaker Output Inverting Speaker Output Analog Power Supply Analog Power Supply Microphone Input Microphone Reference Input Automatic Gain Control Analog Signal Input Analog Signal Output Edge-Activated Playback LED Output Connect to Ground Level-Activated Record Digital Power Supply Digital Power Supply X Axis(Note) -2496.20 -2459.55 -1808.45 -1564.05 -1384.05 -1204.35 -707.15 479.15 976.45 1190.40 1619.45 2035.45 2487.45 2487.45 2487.45 2493.65 1430.70 865.75 258.15 -229.40 -510.80 Y Axis(Note) 1565.80 729.80 -1496.10 -1572.00 -1548.70 -1477.10 -1390.00 -1389.90 -1492.00 -1523.70 -1551.40 -1551.40 -1551.40 -1049.90 -648.90 1371.10 1565.80 1565.80 1565.80 1579.05 1541.60
Note: With respect to die center ( m)
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N
C
APLUS
APR9301-V2

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