ISD91535ADI

Application Specific Microcontrollers Overview

The ISD91535ADI is an audio system-on-chip (SoC) from the ISD91500 series, integrating a 32-bit ARM Cortex-M0 core running up to 49 MHz. It features 64KB Flash and 20KB SRAM, optimized for low-power audio record and playback. Key electrical parameters include a wide operating voltage range of 1.7V to 3.6V, Deep Power Down current under 2uA, and stereo DAC output capability of 20mW per channel into a 32Ω load at 3.3V. The device supports sample rates from 8KHz to 48KHz with -75dB THD+N performance.

Application Specific Microcontrollers Feature Summary

• ARM Cortex-M0 core with 64KB Flash and 20KB SRAM
• Stereo DAC with headphone driver (Class-AB)
• Mono Sigma-Delta ADC with programmable gain amplifier
• USB 2.0 Full-Speed Device Controller

Application Specific Microcontrollers Applications

• USB headsets
• Gaming controllers
• Voice communication systems

Application Specific Microcontrollers Procurement Notes

Verify the specific ordering suffix against the manufacturer's official datasheet to confirm package type and temperature grade. Ensure that VCCD and VCCA are supplied with the same voltage level, as required by the device specifications. Confirm RoHS compliance status through the supplier documentation.

Application Specific Microcontrollers Selection Notes

Select this component for applications requiring integrated audio processing with USB connectivity. The LQFP64 package provides extensive GPIO availability. Consider power management requirements, specifically the Deep Power Down mode for battery-operated devices. Ensure external crystal frequencies match the supported 4~24.576 MHz range if precise timing is needed.

Application Specific Microcontrollers Part Context

The ISD91535ADI belongs to the ISD91500 series of multi-algorithm voice processors. It is designed as an audio SoC combining microcontroller capabilities with high-quality analog audio interfaces. The series targets embedded audio applications where low power consumption and compact integration are critical design factors.

Application Specific Microcontrollers Replacement Considerations

The I91535H02DI is a pin-compatible variant within the same series offering different IO power supply configurations. Verify functional equivalence regarding voltage levels and peripheral availability before substitution.