ML22530TBZ0BX

Audio Special Purpose Overview

The ML22530TBZ0BX is a speech synthesis LSI from ROHM Semiconductor designed for automotive applications. It features HQ-ADPCM compression technology, a 16-bit Digital-to-Analog Converter (DAC), and a low-pass filter to achieve high sound quality. The device integrates communication interfaces, logic, memory, and an amplifier to build a voice output system independent of the host MCU. It operates on a supply voltage of 2.7 V to 5.5 V and is qualified under AEC-Q100 standards.

Audio Special Purpose Feature Summary

• Built-in Flash Memory for standalone operation without external storage
• HQ-ADPCM compression technology for high sound quality and memory efficiency
• 16-bit DAC with low-pass filter
• Built-in playback sound abnormality detection function that sends error signals to the host MCU
• Supports I2C interface
• AEC-Q100 Automotive Grade qualification
• Operating Temperature Range: -40°C to +105°C

Audio Special Purpose Applications

• Advanced Driver Assistance Systems (ADAS) voice output
• Acoustic Vehicle Alerting Systems (AVAS)
• In-vehicle notification and warning systems requiring reliable voice output

Audio Special Purpose Procurement Notes

Note that related models in the ML2253x series may have different lifecycle statuses; verify current availability and ordering suffixes against official ROHM documentation. The part is supplied in a 48-TQFP package.

Audio Special Purpose Selection Notes

Select this component for designs requiring independent voice generation to reduce host MCU load. Ensure the design accommodates the 2.7 V to 5.5 V operating voltage range and the -40°C to +105°C temperature range. Verify PCB layout compatibility with the 48-TQFP (7x7 mm) package.

Audio Special Purpose Part Context

This part belongs to the ML2253x series of speech synthesis LSIs developed by ROHM Semiconductor (Bluesky Semiconductor). The series is characterized by built-in flash memory and integrated amplifiers, allowing for compact voice output solutions that reduce software development time for automotive manufacturers.