Aplus APR9301-V2 Single-chip voice recording & playback device for single 20 to 30 second message Datasheet

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
6 V power supply
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.
Page 1
APLUS
APR9301-V2
Functional Block Diagram
Figure 2 shows the functional block diagram for the APR9301-V2
Figure 2 APR9301 -V2 Functional Block Diagram
VCCD VCCA VSSD VSSA
Power Supplies
Internal
O scillator
OscR
AnaIn
S w itched
C apacitor Filter
Amp
AnaOut
MicIn
MicRef
S am ple & H old
C ircuit
A nalog W rite &
R ead C ircuits
S w itched
C apacitor Filter
PreAmp
N on-Volatile
A nalog Storage
M em ory A rray
AGC
A utom atic G ain
C ontrol (A G C )
Amp
Device Control
/RecL /PlayE
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).
Pag
ge 2
SP+
SP-
/LED
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.
APLUS
Figure 3
APR9301-V2
Sample Application for the APR9301-V2
VC C(6VDC)
NC
1
28
V CCD
NC
2
27
NC
3
26
/RecL
V SSD
NC
4
25
/LED
NC
5
24
NC
/C E
6
23
/P layE
O scR
7
22
NC
NC
8
21
A naO ut
NC
9
20
A naIn
52K
NC
10
19
AGC
NU1
11
18
M icRef
V SS
12
17
M icIn
SP+
13
16
VccA_R
SP-
14
15
VccA_L
For low power applications
use double pole switch.
V CC
VCC
1K
150K
0.1µF
220K
4.7µ F
V CC
0.1uF
1K
47u
22µF
4.7K
0.1µ F
8 Ohm Speaker
E lectret
M icrophone
0.1µ 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.
Table 1
Substrate should be connected to GND.
Typical Dependence of Sampling Frequency and Total Voice Duration on OscR Resistor Value
(VCCA = VCCD = 6V; VSSA = VSSD = 0V; TA = 25oC)
Pin 7 - OscR
Typical Sampling Frequency
Cutoff Frequency (3 dB Point)
Typical Total Voice Duration
38 kW
8 kHz
3.4 kHz
16 seconds
52 kW
6.4 kHz
2.7 kHz
20 seconds
67 kW
5.3 kHz
2.3 kHz
24 seconds
89 kW
4.0 kHz
1.7 kHz
32 seconds
g
Page 3
APLUS
APR9301-V2
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.
Figure 4 Sample Application Using External Microphone Biasing
V CC ( 6 V D C )
1
28
V CCD
NC
2
27
NC
3
26
/R ecL
V SSD
NC
4
NC
5
/CE
6
O scR
7
NC
8
NC
9
APR9301-V2
52K
NC
25
24
/LED
NC
23
/P layE
22
NC
21
NC
20
A naIn
2K
V CC
10 K
10
19
NC
11
18
NC
V SS
12
17
NC
SP+
13
16
VccA_R
14
15
VccA_L
SP-
VCC
1K
0.1µ F
NU1
NC
VCC
22µF
0.1 µ F
100K
R2
47µ F
0.1uF
T1
Electret
M icrophone
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.
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.
Page 4
Substrate should be connected to GND.
APLUS
Table 2
APR9301-V2
Absolute Maximum Ratings.
Item
Symbol
Condition
Min
Max
Unit
o
Power Supply Voltage
VCC
TA = 25 C
4.5
6.5
V
Input Voltage
VIN1
TA = 25 oC
-0.3
VCC +0.3
V
Input Voltage
VIN2
|IIN| < 20 mA
-1.0
VCC +1.0
V
Storage Temperature
TSTG
-
-65
150
oC
Temperature Under Bias
TBS
-
-65
125
o
Lead Temperature
TLD
300
oC
Table 3
<10s
-
C
DC Characteristics Note 1
Item
Symbol
Input High Voltage
V
Input Low Voltage
V
IH
Condition
Min
Typ
-
0.8 V CC
Max
x
-
Unit
V
-
-
-
0.8
V
Output High Voltage
V OH
IOH = -1.6mA
2.4
-
-
V
Output Low Voltage
V OL
IOL = 4.0mA
-
-
0.45
V
Input Leakage Current
IIH
VIH = VCC
-
-
1.0
uA
Input Leakage Current
IIL
-1.0
-
-
uA
Output Tristate Leakage Current
IOZ
VOUT = VCC
or
VOUT = VSS
-1.0
-
1.0
uA
Operating Current Consumption
Standby Current Consumption
ICC
ICCS
Internal Clock, No Load
No Load
-
25
1.0
-
mA
Typ
Max
Unit
Table 4
IL
VIL = VSS
Note 2
uA
Analog Characteristics Note 1
Item
Symbol
Condition
Min
MicIn Input Voltage
V MI
-
-
-
20
mVP-P
MicIn Input Resistance
RMI
-
-
10
-
kW
MicIn Amp Gain (1)
GMI1
AGC < 2.2V
-
24
-
dB
MicIn Amp Gain (2)
GMI2
AGC > 3.0V
-
-45
-15
dB
AnaIn Input Voltage
VANI
-
-
-
50
mVP-P
AnaIn Input Resistance
RANI
-
-
10
-
kW
AnaIn Amp Gain
GANI
AnaIn to SP+/-
22
-
dB
AGC Output Resistance
RAGC
-
1
-
kW
PSP
RSP+/- = 16W
-
12.2
-
mW
-
1.25
-
VP-P
SP+/- Output Power
Voltage Amplitude Across SP+/-
VSP
RSP+/- > 16W
Total Harmonic Distrotion
THD
@ 1kHz & 20mVp-p input
-
1
%
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.
Page 5
APLUS
APR9301-V2
Bonding Pad Diagram & Description of Bonding Pad Coordinates
Figure 5 APR9301-V2 Die Bonding Pad Diagram
V
CC
D
/R
L
ec
2
NU
/L
ED
N
CC
C
C
C
C
C
C
N
N
N
N
N
V
C
Notes:
E
N
/C
/P
D
yE
C
OscR
la
N
Die Dimensions:
x = 214 + 1 mils
y = 144 + 1 mils
APR9301-V2
C
AnaOut
SP
N
C
N
1
VS
SD
VS
SA
A
SP
+
-
V
CC
AnaIn
V
A
CC
A
M
M
ic
In
ic
Re
AG
f
C
NU
S
VS
Die diagram is with respect to die
center (µ m).
C
Die Thickness:
13.8 + 1.0 mils
(350 + 25 µ m
Pad Opening:
110 µ m
4.3 mils
N
Connect substrate to ground.
Table 5 APR9301-V2 Bonding Pad Coordinates
X Axis(Note)
Y Axis(Note)
Chip Enable
-2496.20
1565.80
OscR
Oscillator Frequency-Setting Resistor
-2459.55
729.80
NU1
Connect to Ground
-1808.45
-1496.10
VSSD
Digital Ground Supply
-1564.05
-1572.00
VSSA
Analog Ground Supply
-1384.05
-1548.70
VSSA
Analog Ground Supply
-1204.35
-1477.10
SP+
Non-Inverting Speaker Output
-707.15
-1390.00
SP-
Inverting Speaker Output
479.15
-1389.90
VCCA
Analog Power Supply
976.45
-1492.00
VCCA
Analog Power Supply
1190.40
-1523.70
MicIn
Microphone Input
1619.45
-1551.40
Microphone Reference Input
2035.45
-1551.40
AGC
Automatic Gain Control
2487.45
-1551.40
AnaIn
Analog Signal Input
2487.45
-1049.90
AnaOut
Analog Signal Output
2487.45
-648.90
/PlayE
Edge-Activated Playback
2493.65
1371.10
/LED
LED Output
1430.70
1565.80
NU2
Connect to Ground
865.75
1565.80
/RecL
Level-Activated Record
258.15
1565.80
VCCD
Digital Power Supply
-229.40
1579.05
VCCD
Digital Power Supply
-510.80
1541.60
Pin
/CE
MicRef
Pin Name
Note: With respect to die center (µ m)
Page 6
APLUS
APR9301-V2
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