ML22Q284-NNNTDZ0ATL

Audio Special Purpose Overview

The ML22Q284-NNNTDZ0ATL is an automotive-grade speech synthesis LSI from ROHM Semiconductor, designed for high-quality audio playback in vehicle systems. It features built-in flash memory (692 Kbit) for storing voice code data and operates independently without requiring a host microcontroller. The device supports a wide operating voltage range of 2.0V to 5.5V and functions within a temperature range of -40°C to 105°C. It integrates a Class D speaker amplifier capable of 1.0W output, enabling a single-chip solution for voice reproduction. The component meets AEC-Q100 standards for automotive reliability.

Audio Special Purpose Feature Summary

• Built-in Flash Memory: Stores voice code data for standalone operation (692 Kbit capacity).
• Integrated Amplifier: Includes a 1.0W Class D speaker amplifier for direct drive.
• Automotive Grade: Complies with AEC-Q100 standards for harsh environments.
• Standalone Control: Can be controlled independently without external CPU intervention.
• Wide Voltage Range: Operates on 2.0V to 5.5V supply voltage.

Audio Special Purpose Applications

• Vehicle Access Control Systems
• In-Vehicle Infotainment Voice Guidance
• Advanced Driver Assistance Systems (ADAS) Audio Alerts

Audio Special Purpose Procurement Notes

Verify the specific ordering suffix against the manufacturer's datasheet to confirm package type and tape/reel specifications. Ensure the selected variant matches the required interface and memory capacity for the target application. Confirm RoHS compliance status if environmental regulations are a constraint for the final product assembly.

Audio Special Purpose Selection Notes

Select this model when standalone voice playback is required without MCU intervention. The integrated Class D amplifier simplifies design by reducing external components. Consider the 692Kbit flash capacity and approximately 30 phrases/28 seconds maximum playback time when planning audio content. Verify that the P-TSSOP20 package fits the PCB layout constraints.

Audio Special Purpose Part Context

This part belongs to the ML22Q series of speech synthesis LSIs. The ML22Q284 variant specifically offers independent control capabilities, distinguishing it from clock-synchronous or I2C-controlled siblings like the ML22Q274 and ML22Q294. It is engineered for applications demanding reliable, high-fidelity audio output in automotive contexts.