ISD1612BX

Overview

The ISD1612BX is a single-chip voice record and playback device from the Nuvoton ISD1600B series. It features a 16-lead SOP package with an operating voltage range of 2.4V to 5.5V. The sampling frequency is adjustable between 4 kHz and 12 kHz via an external resistor, determining a message duration of approximately 8 seconds at 12 kHz up to 24 seconds at 4 kHz. Key electrical parameters include a typical standby current of 1 µA, a maximum of 10 µA, and a speaker output power of 670 mW at 5.5V into an 8 Ω load. The device utilizes Multi-Level Storage (MLS) technology for zero-power flash storage.

Feature Summary

• Integrated push-button interface supporting level-triggered recording and edge/level-triggered playback
• Dual output channels comprising a PWM Class D amplifier for direct speaker driving and a current output for external amplifiers
• Automatic power-down mode that minimizes standby current consumption immediately after operation cycles
• On-chip microphone preamplifier with Automatic Gain Control (AGC) and differential input noise cancellation

Applications

• Electronic greeting cards and toys requiring simple voice prompts
• Industrial control systems needing audible status alerts or error messages
• Home appliances utilizing voice feedback for user interaction
• Security alarm systems providing recorded warnings or instructions

Procurement Notes

Verify the specific suffix 'BX' against the manufacturer's ordering information to confirm the die-level packaging and commercial temperature rating. Ensure the external oscillator resistor value matches the desired sampling frequency and duration requirements. Confirm compliance with RoHS and TSCA standards if required by the target market regulations.

Selection Notes

Select this component when a single-message application is sufficient and cost-effective standalone operation is preferred over multi-message controllers. Consider the ISD1616B or ISD1620B variants if longer recording durations are necessary. Evaluate the trade-off between audio quality and battery life by adjusting the sampling frequency through the external resistor selection.

Part Context

The ISD1612BX belongs to the ISD1600B ChipCorder series, which provides high-quality, uncompressed voice recording on a single chip. This series is designed for applications where simplicity and low power consumption are critical. The MLS technology allows for direct storage of audio data without digital compression artifacts, ensuring natural sound reproduction.

Replacement Considerations

The ISD1610B and ISD1616B are compatible members of the same family with similar pinouts but different default duration ranges. Verify that the memory capacity of the replacement part meets the specific timing requirements of the application design.