1 Features

• ultra-small low-cost short-term single-stage voice recorders.
• to provide pulse width modulation (PWM) and current outputs (AUD) two kinds of speaker output mode for 2 to 3 battery equipment.
• Operating voltage 2.4 ~ 5.5V, are available from 6.6 to 40 seconds continuous recording / playback function.

2 ISD1600B Series

Nuvoto launched in 2005 The ISD1600B Series includes the following models:
• ISD1610B from 6.6 to 20 sec
• ISD1612B from 8 to 24 sec
• ISD1616B from 10.6 to 32 sec
• ISD1620B from 13.3 to 40 sec

3 sampling frequency corresponding to the table with storage time

Adjust the sampling frequency corresponding to the different resistance:

4 timing diagram

Record operation

Playback Operation

5 ISD15100 series application circuit