ISD4003-05MS

Overview

The ISD4003-05MS is a single-chip voice record/playback device from the ISD4003 series, manufactured by Nuvoton Technology Corporation. It provides 5 minutes of recording duration at a sampling frequency of 6.4 kHz with a filter pass band of 2.7 kHz. The component operates on a single 3-volt supply (2.7V to 3.3V) and features low-power consumption, including a standby current of 1 µA typical. It utilizes high-density multilevel Flash memory for non-volatile storage, supporting 100K record cycles and 100-year message retention. Control is managed via an SPI or Microwire serial interface, and it includes an AutoMute feature for noise attenuation.

Feature Summary

• Single-chip solution integrating analog transceivers, filters, audio amplifier, and multilevel Flash memory array.
• Direct analog storage of voice signals without digitization or compression for high-quality reproduction.
• AutoMute feature minimizes background noise during silence periods with 6 dB attenuation.
• Fully addressable multiple-message handling via microcontroller SPI or Microwire interface.

Applications

• Cellular phones
• Portable products requiring messaging capabilities
• Microprocessor or microcontroller-based systems

Procurement Notes

Verify the specific suffix 'MS' against the manufacturer's official datasheet to confirm package type and temperature grade. Ensure the ordering code matches the required 5-minute duration variant. Confirm RoHS compliance status and check for any product change notices (PCN) related to this part number before procurement.

Selection Notes

Select the ISD4003-05MS when a 5-minute recording duration at 6.4 kHz sampling rate is required. Compare against other series variants like ISD4003-04M or ISD4003-06M if different durations or sampling frequencies are needed. Ensure the system supports the required 3V supply voltage and SPI/Microwire interface protocols.

Part Context

The ISD4003-05MS belongs to the ISD4003 ChipCorder series, which offers 4-, 5-, 6-, and 8-minute duration options. This series is designed for portable applications using CMOS technology and patented multilevel storage. Other variants in the family include ISD4003-04M, ISD4003-06M, and ISD4003-08M, differing primarily in duration and sampling frequency.

Replacement Considerations

ISD4003-04MSY is listed as a manufacturer recommended substitute in distributor databases, though it offers 4 minutes of duration. Verify functional compatibility regarding duration and interface requirements before substitution.

FAQ

What is the maximum input signal level for optimal recording quality?

In single-ended mode, the maximum input signal should be 32 mVp-p. In differential-input mode, the maximum input signal at ANA IN+ and ANA IN- should be 16 mVp-p.

How does the AutoMute feature function?

The AutoMute feature attenuates background noise by 6 dB during periods of silence. It uses a peak detector circuit where a capacitor connected to the AM CAP pin helps determine the trip point based on signal amplitude.

What is the power-up delay time for the ISD4003-05MS?

The power-up delay (TPUD) for the ISD4003-05MS is typically 31.25 msec.