TDA7803A-8ZT

Overview

The STMicroelectronics TDA7803A-8ZT is a single-chip quad bridge amplifier in advanced BCD technology. It integrates a full D/A converter, digital input for direct connection to I2S or TDM, and powerful MOSFET output stages. The device supports an operating supply voltage from 6 V to 18.5 V and operates within a temperature range of -40°C to +105°C. It features AEC-Q100 qualification for automotive applications. The integrated D/A converter enables a signal-to-noise ratio of 115 dB and dynamic range exceeding 110 dB. It includes programmable PLL locking at 64*Fs and full diagnostics via the I2C bus.

Feature Summary

• Quad bridge amplifier with integrated D/A converter and MOSFET outputs
• Digital interface supporting I2S and TDM protocols
• High efficiency SB-I operation reducing dissipated power by up to 50%
• Full diagnostic array communicating speaker status via I2C bus

Applications

• Automotive audio systems
• Battery modulation compatible Class-G systems
• Start-stop vehicle profiles

Procurement Notes

Verify the specific suffix '8ZT' against official STMicroelectronics documentation to confirm package details and ordering information. Ensure compatibility with Flexiwatt-27 SMD mounting requirements. Confirm AEC-Q100 qualification status for the specific variant before integration into automotive designs.

Selection Notes

Select this component for applications requiring high-efficiency digital input amplification with integrated DAC functionality. Consider the 6 V to 18.5 V supply range for battery-compatible designs. Verify that the system supports I2S or TDM digital inputs and utilizes the I2C bus for configuration and diagnostics.

Part Context

The TDA7803A series represents STMicroelectronics' solution for high-performance automotive audio. It combines digital processing with analog output stages on a single chip. The series is designed to meet automotive reliability standards while providing high output power and low distortion characteristics.

Replacement Considerations

Check for pin-compatible alternatives within the TDA7803A family or related STMicroelectronics automotive amplifier lines. Verify electrical parameters and package dimensions match the design requirements before substitution.

FAQ

What is the maximum operating supply voltage?

The maximum operating supply voltage is 18.5 V.

Does the device support start-stop battery profiles?

Yes, it is compatible with start-stop battery profiles, operating down to 6 V.

What digital interfaces are supported?

The device supports I2S and TDM digital input interfaces.