ISD2548S

Voice Record And Playback Overview

The ISD2548S is a single-chip, multiple-message voice record/playback device from the Winbond ISD2500 series. It provides 48 seconds of recording duration using direct analog storage in on-chip nonvolatile memory. The device operates on a single 5V supply and includes an on-chip oscillator, microphone preamplifier, automatic gain control, and speaker amplifier. It supports microcontroller interfaces for complex messaging and offers operational modes such as push-button control. The component is available in SOIC, PDIP, and TSOP packages with a commercial temperature range of 0°C to +70°C.

Voice Record And Playback Feature Summary

• Direct analog storage technology preserves natural voice quality without digitization or compression.
• Integrated on-chip components include microphone preamplifier, automatic gain control, and speaker driver.
• Supports multiple operational modes including message cueing, looping, and push-button control.
• Zero-power message storage eliminates the need for battery backup circuits.

Voice Record And Playback Applications

• Car stereo messaging systems
• Handset voice prompts
• Transformer-based voice devices

Voice Record And Playback Procurement Notes

Verify the manufacturer origin carefully, as the ISD2500 series was originally developed by Winbond. Confirm that the specific ISD2548S part number corresponds to the intended packaging type (SOIC, PDIP, or TSOP) and temperature grade. Ensure compatibility with existing microcontroller interfaces and power supply requirements before procurement.

Voice Record And Playback Selection Notes

Select the ISD2548S when 48 seconds of audio duration is required. Compare sampling rates against other series members like ISD2532 or ISD2564 if higher fidelity or longer duration is needed. Consider the push-button mode availability if minimizing external control circuitry is a priority. Verify package availability for the specific form factor required by the design.

Voice Record And Playback Part Context

The ISD2548S belongs to the ISD2500 ChipCorder series, which utilizes patented multilevel storage technology. This family includes variants with 32, 40, 48, and 64-second durations. The series is designed for high-quality, solid-state voice reproduction in consumer electronics applications requiring simple record/playback functionality.

Voice Record And Playback Replacement Considerations

ISD2532S, ISD2540S, and ISD2564S are compatible within the same series offering different durations. Cross-manufacturer equivalents may exist but require verification of pinout and electrical characteristics.