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PDF ISD2532 Data sheet ( Hoja de datos )
| Número de pieza | ISD2532 | |
| Descripción | (ISD2500 Series) Single-Chip Voice Record/Playback Devices | |
| Fabricantes | ISD | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de ISD2532 (archivo pdf) en la parte inferior de esta página. Total 28 Páginas | ||
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®
ISD2500 Series
Single-Chip Voice Record/Playback Devices
32-*, 40-*, 48-*, 64-*, 60-, 75-,
90-, and 120-Second Durations
FEATURES
• Easy-to-use single-chip voice Record/
Playback solution
• High-quality, natural voice/audio
reproduction
• Manual switch or microcontroller compati-
ble Playback can be edge- or level-
activated
• Single-chip durations of 32*, 40*, 48*, 64*,
60, 75, 90, and 120 seconds
• Directly cascadable for longer durations
• Automatic Power-Down (Push-Button
Mode)
– Standby current 1 µA (typical)
• Zero-power message storage
– Eliminates battery backup circuits
• Fully addressable to handle multiple
messages
• 100-year message retention (typical)
• 100,000 record cycles (typical)
• On-chip clock source
• No algorithm development required
• Single +5 volt power supply
• Available in die form, DIP, SOIC, and
TSOP packaging
• Industrial temperature (-40°C to +85°C)
versions available
1
ISD2500 SERIES SUMMARY
Part
Number
Duration
(Seconds)
ISD2560
ISD2575
ISD2590
ISD25120
ISD2532*
ISD2540*
ISD2548*
ISD2564*
60
75
90
120
32
40
48
64
Input Sample
Rate (KHz)
8.0
6.4
5.3
4.0
8.0
6.4
5.3
4.0
Typical Filter
Pass Band (KHz)
3.4
2.7
2.3
1.7
3.4
2.7
2.3
1.7
Information Storage Devices, Inc.
* Advance information: ISD2532/40/48/64 devices.
1–79
1 page  
Product Data Sheets
ISD2532/40/48/64* DEVICE PINOUTS
OVF
CE
PD
EOM
XCLK
P/R
VCCD
NC
NC
A0/M0
A1/M1
A2/M2
A3/M3
A4/M4
A5/M5
A6/M6
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
ISD2532/40/48/64
TSOP
ISD2500 Series
32 ANA OUT
31 ANA IN
30 AGC
29 MIC REF
28 MIC
27 VCCA
26 SP–
25 NC
24 NC
23 SP+
22 VSSA
21 VSSD
20 AUX IN
19 A8
18 A7
17 NC
A0/M0
A1/M1
A2/M2
A3/M3
A4/M4
A5/M5
A6/M6
NC
A7
A8
AUX IN
VSSD
VSSA
SP+
1
2
3
4
5
6 ISD2532
7 ISD2540
8 ISD2548
9 ISD2564
10
11
12
13
14
28
27
26
25
24
23
22
21
20
19
18
17
16
15
DIP/SOIC
VCCD
P/R
XCLK
EOM
PD
CE
OVF
ANA OUT
ANA IN
AGC
MIC REF
MIC
VCCA
SP–
Microphone Input (MIC)
The microphone input transfers its signal to the on-
chip preamplifier. An on-chip Automatic Gain Con-
trol (AGC) circuit controls the gain of this
preamplifier from -15 to 24 dB. An external micro-
phone should be AC coupled to this pin via a series
capacitor. The capacitor value, together with the
internal 10 K ohm resistance on this pin, deter-
mines the low-frequency cutoff for the ISD2500
Series passband. See ISD's Application Notes and
Design Manual in this book for additional informa-
tion on low-frequency cutoff calculation.
Microphone Reference Input (MIC REF)
The MIC REF input is the inverting input to the
microphone preamplifier. This provides a noise-
canceling or common-mode rejection input to the
device when connected to a differential
microphone.
Automatic Gain Control Input (AGC)
The AGC dynamically adjusts the gain of the
preamplifier to compensate for the wide range of
microphone input levels. The AGC allows the full
range of whispers to loud sounds to be recorded
with minimal distortion. The “attack” time is deter-
mined by the time constant of a 5 KΩ internal
resistance and an external capacitor (C2 on the
schematic on page 1-100) connected from the
AGC pin to VSSA analog ground. The “release”
time is determined by the time constant of an
external resistor (R2) and an external capacitor
(C2) connected in parallel between the AGC Pin
and VSSA analog ground. Nominal values of
470 KΩ and 4.7 µF give satisfactory results in
most cases.
1
Analog Output (ANA OUT)
This pin provides the preamplifier output to the
user. The voltage gain of the preamplifier is deter-
mined by the voltage level at the AGC pin.
Analog Input (ANA IN)
The analog input pin transfers its signal to the chip
for recording. For microphone inputs, the ANA
OUT pin should be connected via an external
capacitor to the ANA IN pin. This capacitor value,
together with the 3.0 KΩ input impedance of ANA
IN, is selected to give additional cutoff at the low-
frequency end of the voice passband. If the
desired input is derived from a source other than a
microphone, the signal can be fed, capacitively
coupled, into the ANA IN pin directly.
External Clock Input (XCLK)
The external clock input for the ISD2500 devices
has an internal pull-down device. These devices
are configured at the factory with an internal sam-
pling clock frequency centered to ±1% of
* Advance information: ISD2532/40/48/64 devices.
1–83
5 Page 
Product Data Sheets
TIMING DIAGRAMS
Record
CE
TSET
P/R
PD Don't Care
A0-A9 Don't Care
MIC
ANA IN
OVF
TSET
TPUD
TCE
THOLD
Playback
CE
TSET
P/R
PD Don't Care
A0-A9 Don't Care
SP+/–
OVF
TSET
EOM
TPUD
TCE
THOLD
ISD2500 Series
Don't Care
T PDH
Don't Care
TOVF
TPDS TPDR
1
Don't Care
T PDH
TPDS
TPDP
Don't Care
TOVF
TEOM
* Advance information: ISD2532/40/48/64 devices.
1–89
11 Page | ||
| Páginas | Total 28 Páginas | |
| PDF Descargar | [ Datasheet ISD2532.PDF ] | |
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