LC89075WA-H

Audio Special Purpose Overview

The LC89075WA-H is a digital audio interface receiver and analog-to-digital converter (ADC) integrated circuit manufactured by onsemi. It demodulates S/PDIF signals compliant with IEC60958/61937 standards, supporting sampling frequencies from 32kHz to 192kHz. The device includes a 24-bit stereo ADC with a built-in PGA, anti-aliasing filter, and soft mute, operating at up to 96kHz. An integrated audio selector manages multi-channel data routing. Powered by 3.0V–3.6V digital supplies and 4.5V–5.5V analog supply, it operates within -30°C to 85°C in a 64-pin SQFP package.

Audio Special Purpose Feature Summary

• S/PDIF Demodulation: Supports IEC60958/61937 and JEITA CPR-1205 formats with reception frequencies from 32kHz to 192kHz.
• Stereo ADC: Features a 24-bit delta-sigma converter with built-in PGA (-4.5dB to 6dB), anti-aliasing filter, and soft mute.
• Audio Selector: Configurable routing for up to 8 channels, supporting various input/output line configurations.
• SPI Interface: Includes an SPI microcontroller interface for register configuration and status monitoring.

Audio Special Purpose Applications

• AV receivers
• Digital TVs
• DVD recorders

Audio Special Purpose Procurement Notes

Verify the specific suffix 'H' against the official datasheet ordering information, as standard listings typically reference LC89075WA. Confirm package availability in 64-SQFP format and ensure voltage supply requirements (AVDD 4.5-5.5V, DVDD/PVDD 3.0-3.6V) match system design constraints.

Audio Special Purpose Selection Notes

Select this component for systems requiring simultaneous S/PDIF demodulation and analog audio digitization. Ensure the application supports the required clock frequencies (12.288MHz or 24.576MHz) and provides adequate power sequencing for AVDD, PVDD, and DVDD pins to prevent latch-up.

Audio Special Purpose Part Context

This component belongs to the digital audio interface receiver category. It integrates DIR, ADC, and audio switching functions into a single CMOS LSI, designed to serve as a complete front-end for consumer audio electronics. The device replaces discrete demodulator and ADC solutions by consolidating signal processing and routing capabilities.

Audio Special Purpose Replacement Considerations

Direct replacement requires matching the 64-SQFP package and pinout. Verify compatibility of the SPI interface and register map if substituting with other onsemi audio receivers. Cross-reference with similar models like LC89075A if electrical characteristics differ significantly.

Audio Special Purpose FAQ

What are the supported sampling frequencies for the DIR and ADC blocks?

The Digital Input Receiver (DIR) supports sampling frequencies from 32kHz to 192kHz. The Analog-to-Digital Converter (ADC) supports sampling frequencies from 8kHz to 96kHz.

How is the power-on reset function configured?

The device has a built-in power-on reset circuit. To use it, the XMODE pin must be fixed at logic high ('H') before power is turned on. If not using the internal reset, XMODE should be set to low during power-on.

What is the maximum input voltage tolerance for the S/PDIF input pins?

Pins RXIN1A, RXIN2A, and RXIN3A have 3.3V tolerance TTL-compatible inputs. Pins RXIN1 through RXIN8 have 5V tolerance TTL-compatible inputs.