isd1900 Winbond Electronics Corp America, isd1900 Datasheet - Page 3

• Manufacturer Part Number: isd1900
• Description: Single-chip, Multiple-message Voice Record/playback Device 10.6- To 32-seconds Duration
• Manufacturer: Winbond Electronics Corp America

1.
Winbond’s ISD1916 ChipCorder
dual operating modes (address trigger and direct trigger) with wide operating voltage ranging from
2.4V to 5.5V. The sampling frequency can be selected from 4 to 12 kHz via an external resistor, which
also determines the duration from 10.6 to 32 seconds. The device is designed for mostly standalone
applications, and of course, it can be manipulated by a microcontroller, if necessary.
The two operating modes are address trigger and direct trigger. While in address trigger mode, both
record and playback operations are manipulated according to the start address and end address
specified through the start address and end address pins. However, in direct trigger mode, the device
can configure the memory up to as many as eight equal messages, pending upon the fixed message
configuration settings. With the record or playback feature being pre-selected, each message can be
randomly accessed via its message control pin.
The device has a selectable differential microphone input with AGC feature or single-ended analog
input, AnaIn, under feed-through mode. Its differential Class D PWM speaker driver can directly drive
a typical speaker or buzzer.
2. FEATURES
The ISD1916 is a multiple messages record/playback device with two operational modes: address
trigger (
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Temperature option: -40°C to +85°C (Industrial)
Packaging: available in SOIC only
Supply voltage: 2.4V to 5.5V.
External resistor, Rosc, selects sampling frequency and duration.
Mic+/Mic- : differential microphone inputs.
AGC : automatic gain control for microphone preamp circuit.
When both
signal output to speaker simultaneously.
SP+/SP- : Class-D PWM differential speaker drivers.
Automatically power down after each operation cycle.
Playback takes precedence over the recording operation.
FT
LED
GENERAL DESCRIPTION
NORM
Sampling Frequency
Rosc
: feed-through the AnaIn signal to the speaker outputs while AnaIn is converted from MIC+.
: during recording, LED is on.
) and direct trigger (
FT
and
recording are
®
MODE
is a new single-chip multiple-message record/playback series with
53.3 KΩ
12 kHz
active, device will record AnaIn signal into memory with AnaIn
). The analog inputs and the outputs are:
80 KΩ
8 kHz
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Publication Release Date: September 11, 2007
6.4 kHz
100 KΩ
5.3 kHz
120 KΩ
ISD1916
160 KΩ
4 kHz
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