The ISD1700 Series is a high quality, fully integrated, single-chip multi message voice record and playback device ideally suited to a variety of electronic systems. The message duration is user selectable in ranges from 26 seconds to 120 seconds, depending on the
specific device. The sampling frequency of each device can also be adjusted from 4 kHz to 12 kHz
with an external resistor, giving the user greater flexibility in duration versus recording quality for each application. Operating voltage spans a range from 2.4 V to 5.5 V to ensure that the ISD1700 devices are optimized for a wide range of battery or line-powered applications. The ISD1700 is designed for operation in either standalone or microcontroller (SPI) mode. The device incorporates a proprietary message management system that allows the chip to self-manage address locations for multiple messages. This unique feature provides sophisticated messaging flexibility in a simple push-button environment. The devices include an on-chip oscillator (with external resistor control), microphone pre-amplifier with Automatic Gain Control (AGC), an auxiliary analog input, anti-aliasing filter, Multi-Level Storage (MLS) array, smoothing filter, volume control, Pulse Width Modulation (PWM) Class D speaker driver, and current/voltage output.
Features/Specs:
- Integrated message management systems for single-chip, push-button applications
- REC : level-trigger for recording
- PLAY : edge-trigger for individual message or level-trigger for looping playback sequentially
- ERASE : edge-triggered erase for first or last message or level-triggered erase for all messages
- FWD : edge-trigger to advance to the next message or fast message scan during the playback
- VOL : 8 levels output volume control
- RDY INT : ready or busy status indication
- RESET : return to the default state
- Automatic power-down after each operation cycle
- Selectable sampling frequency controlled by an external oscillator resistor
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