ISD1700 SERIES
2 FEATURES
Integrated message management systems for single-chip, push-button applications
o
REC
:
level-trigger for recording
o
PLAY
:
edge-trigger for individual message or level-trigger for looping playback sequentially
o
ERASE
:
edge-triggered erase for first or last message or level-triggered erase for all messages
o
FWD
:
edge-trigger to advance to the next message or fast message scan during the playback
o
VOL
: 8 levels output volume control
o
RDY INT
: ready or busy status indication
o
RESET
: return to the default state
o
Automatic power-down after each operation cycle
Selectable sampling frequency controlled by an external oscillator resistor
Sampling Frequency
Rosc
12 kHz
53 kΩ
8 kHz
80 kΩ
6.4 kHz
100 kΩ
5.3 kHz
120 kΩ
4 kHz
160 kΩ
Selectable
message
duration
o
A wide range selection from 20 secs to 480 secs pending upon sampling frequency chosen
Sample Freq. ISD1730
20 secs
12 kHz
8 kHz
6.4 kHz
5.3 kHz
4 kHz
30 secs
37 secs
45 secs
60 secs
ISD1740
26 secs
40 secs
50 secs
60 secs
80 secs
ISD1750
33 secs
50 secs
62 secs
75 secs
100 secs
ISD1760
40 secs
60 secs
75 secs
90 secs
120 secs
ISD1790 ISD17120 ISD17150 ISD17180 ISD17210 ISD17240
60 secs
80 secs 100 secs 120 secs 140 secs 160 secs
90 secs
112 secs
135 secs
180 secs
120 secs
150 secs
181 secs
240 secs
150 secs
187 secs
226 secs
300 secs
180 secs
225 secs
271 secs
360 secs
210 secs
262 secs
317 secs
420 secs
240 secs
300 secs
362 secs
480 secs
Message and operation indicators
o
Four customizable Sound Effects (SEs) for audible indication
o
Optional vAlert (voiceAlert) to indicate the presence of new messages
o
LED: stay on during recording, blink during playback, forward and erase operations
Dual operating modes
o
Standalone mode:
Integrated message management techniques
Automatic power-down after each operation cycle
o
SPI mode:
Fully user selectable and controllable options via APC register and various SPI commands
Two individual input channels
o
MIC+/MIC-: differential microphone inputs with AGC (Automatic Gain Control)
o
AnaIn: single-ended auxiliary analog input for recording or feed-through
Dual output channels
o
Differential PWM Class D speaker outputs directly drives an 8
Ω
speaker or a typical buzzer
o
Configurable AUD (current) or AUX (voltage) single-ended output drives external audio amplifier
ChipCorder standard features
o
High-quality, natural voice and audio reproduction
o
2.4V to 5.5V operating voltage
o
100-year message retention (typical)
o
100,000 record cycles (typical)
-4-
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