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ISD1612BSI Datasheet(PDF) 8 Page - Winbond

Part # ISD1612BSI
Description  Single-Message Single-Chip 6.6- to 40-Second Voice Record & Playback Devices with vAlert Option
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Manufacturer  WINBOND [Winbond]
Direct Link  http://www.winbond.com
Logo WINBOND - Winbond

ISD1612BSI Datasheet(HTML) 8 Page - Winbond

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ISD1600B SERIES
- 8 -
SOIC / PDIP
PIN NAME
PIN NO.
FUNCTIONS
VCCA
10
Analog power supply
: It is important to have a separate
path for each power back to the power terminal to minimize
the noises. Decoupling capacitors to VSSA should be as
close to the device as possible.
VCCP
10
VCCP: Power supply for PWM speaker drivers. It is important
to have a separate path for each power back to the power
terminal to minimize noise. Decoupling capacitors to VSSP
should be as close to the device as possible.
SP+
11
Speaker Positive
: The SP+, Class D PWM output, provide
a differential output with SP- pin to drive an 8Ω speaker or
buzzer directly. During power down or recording, this pin is
tri-stated.
AGC
12
Automatic Gain Control
: The AGC dynamically adjusts the
gain of the preamplifier to compensate the wide range of
microphone input levels. The AGC allows the full range of
signal to be recorded with minimal distortion. Nominal
values of 4.7 µF give satisfactory results in most cases.
Connecting this pin to ground provides maximum gain to the
preamplifier circuitry. Conversely, connecting this pin to
power supply provides minimum gain to the preamplifier
circuitry.
AUD
13
AUD
: The AUD provides a single-ended current output to
drive an external amplifier. During standby or recording, this
pin is tri-stated.
ROSC
14
Oscillator Resistor
: This enables the user to vary the
record and/or playback duration of the device. A resistor
connected between the ROSC pin and VSSA determines the
sample frequency for the ISD1600B device. Please refer to
the Duration Section in Section 6.1.
VCCD
15
Digital power supply
: It is important to have a separate
path for each power back to the power terminal to minimize
noise. Decoupling capacitors should be as close to the
device as possible.
LED
16
LED output
: This pin is Low during a record cycle and
blinks during playback cycle. It can be used to drive an LED
to indicate either a record or playback cycle is in progress.
Note:
[1] 600kΩ (typical).


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