TDA9875AH/V2,557

Overview

The TDA9875AH/V2,557 is a single-chip Digital TV Sound Processor (DTVSP) designed for analog and digital multi-channel sound systems in television sets and satellite receivers. It integrates demodulation, decoding, and digital signal processing capabilities. The device supports multiple standards including B/G, D/K, I, M, and L, along with NICAM and A2/A2+ stereo systems. It features an I2C interface for control and an I2S bus for expansion. Operating from a 4.75V to 5.5V supply, it is housed in a 64-lead QFP package.

Feature Summary

• Integrated SIF input switch, AGC, and 8-bit ADC for sound IF processing
• Supports FM/AM demodulation, NICAM decoding, and A2/A2+ satellite sound systems
• Digital signal processing with volume, balance, bass/treble, and spatial effects control
• I2C-bus control interface and I2S-bus interface for feature extension

Applications

• Analog TV sets with multi-standard sound support
• Satellite receivers requiring Astra specification compliance
• Consumer audio equipment utilizing SCART inputs/outputs

Procurement Notes

Verify the specific suffix V2,557 against the manufacturer's current ordering information to confirm availability and exact package variant. Check RoHS compliance status as manufacturing processes may update over time. Ensure the 64-QFP package dimensions match the target PCB footprint requirements.

Selection Notes

Select this component for applications requiring integrated handling of terrestrial and satellite sound signals. Ensure the design accommodates the required 24.576 MHz external crystal oscillator. Verify that the microcontroller system can manage the I2C-bus register definitions for proper initialization and control of the DSP functions.

Part Context

This part belongs to the TDA9875A family of digital TV sound processors. The AH suffix denotes the plastic quad flat package (QFP) variant with 64 leads. The V2,557 suffix typically indicates specific packaging or reel configuration details provided by NXP USA Inc., consistent with standard product naming conventions for this series.

Replacement Considerations

Direct replacements within the same family include the TDA9875A in SDIP64 package. Cross-model compatibility should be verified via official datasheets, as pinouts and electrical characteristics may differ between package types.