STA120DJ13TR

Audio Special Purpose Overview

The STA120DJ13TR is a monolithic CMOS digital audio interface receiver designed to decode audio data according to AES/EBU, IEC 958, S/PDIF, and EIAJ CP-340/1201 standards. It recovers clock and synchronization signals from differential or single-ended inputs using an on-chip PLL with low-jitter characteristics. The device demultiplexes audio, channel status, user, and validity data directly to serial output pins. Operating on a 3.3V supply, it provides a 256xFS master clock output and supports sample frequencies up to 96 kHz. The part is housed in a 28-pin SO package.

Audio Special Purpose Feature Summary

• Supports AES/EBU, IEC 958, S/PDIF, and EIAJ CP-340/1201 professional and consumer formats
• Integrated RS422 line receiver for differential or single-ended input decoding
• Low-jitter on-chip PLL providing 256xFS master clock output
• Dedicated serial outputs for channel status (C), user bits (U), and validity/error flags (VERF)

Audio Special Purpose Applications

• Digital audio receivers for professional broadcast equipment
• Consumer audio interface decoders
• Systems requiring direct extraction of channel status and user data

Audio Special Purpose Procurement Notes

Verify the ordering suffix 'DJ13TR' against the manufacturer's current catalog, as datasheets may list the base part number as STA120D. Confirm that the specific tape-and-reel packaging configuration matches the required production specifications. Ensure compatibility with the 3.3V logic levels specified in the absolute maximum ratings.

Audio Special Purpose Selection Notes

Select this component when direct decoding of standard digital audio interfaces is required without external microprocessor intervention for basic data extraction. It is suitable for applications needing dedicated pins for channel status and error reporting. Ensure the design accommodates the external loop filter components (resistor and capacitors) required for the PLL connection at the FILT pin.

Audio Special Purpose Part Context

The STA120 is a specialized digital audio interface receiver within STMicroelectronics' audio subsystem portfolio. It functions as a bridge between digital transmission lines and downstream audio processing units by handling clock recovery and data demultiplexing. The device simplifies system design by integrating the RS422 receiver and PLL, reducing the need for multiple discrete components in audio interface circuits.

Audio Special Purpose Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Verify functional compatibility regarding serial port modes and channel status bit definitions if considering alternative devices.