ML22Q665-NNNTBZ0BX

Audio Special Purpose Overview

The ML22Q665-NNNTBZ0BX is a 4-channel mixing speech synthesis LSI manufactured by ROHM Semiconductor. It features built-in flash memory for sound data storage and utilizes HQ-ADPCM compression for high-quality audio playback. The device includes an I²C interface (slave mode) for system control, a 16-bit D/A converter, and a low-pass filter. It is housed in a 32-TQFP (7x7 mm) package and operates within a supply voltage range of 2.7V to 5.5V.

Audio Special Purpose Feature Summary

• 4-channel mixing speech synthesis capability
• Built-in Flash Memory for sound data storage
• HQ-ADPCM audio compression algorithm
• I²C Interface (Slave Mode)
• 16-bit D/A Converter with Low-Pass Filter
• 32-TQFP (7x7 mm) Package
• Supply Voltage: 2.7V to 5.5V
• AEC-Q100 Qualified (Automotive Grade)

Audio Special Purpose Applications

• Automotive audio systems
• In-car voice guidance modules
• Infotainment system audio processing
• Vehicle notification and announcement systems

Audio Special Purpose Procurement Notes

Verify the specific ordering suffix NNNTBZ0BX against the manufacturer's datasheet to confirm package type and tape/reel specifications. Ensure the application environment remains within the specified -40°C to 70°C operating temperature range. Confirm that the I²C bus timing requirements align with the system controller. Check for any recent lifecycle status updates from ROHM Semiconductor before finalizing procurement plans.

Audio Special Purpose Selection Notes

Select this component when a dedicated multi-channel audio processor with integrated memory is required for automotive designs. The 32-TQFP package suits space-constrained PCB layouts. Verify that the 2.7V to 5.5V supply voltage matches the target system power rails. Consider the AEC-Q100 qualification if the application mandates automotive reliability standards over industrial or commercial grades.

Audio Special Purpose Part Context

This part belongs to the ML22Q series of speech synthesis LSIs from ROHM Semiconductor. These devices integrate audio processing functions to reduce reliance on main microcontrollers. The ML22Q665 variant specifically offers four channels, distinguishing it from single-channel or two-channel models in the same family. It is designed to simplify voice output system architecture in vehicles.