SAA7327H/T/M2B,557

Encoders, Decoders, Converters Overview

The SAA7327H is a single-chip digital servo processor and Compact Disc decoder with an integrated bitstream DAC, designed for Video CD applications. It operates on a 3.3 V supply (range 3.0–3.6 V) within a commercial temperature range of -10 °C to +70 °C. The device supports decoding speeds up to 2 times the standard rate and utilizes an internal clock multiplier compatible with 8.4672, 16.9344, or 33.8688 MHz crystals. It features a t=2, e=4 error correction strategy and includes a FIFO overflow concealment mechanism. The onboard DAC delivers a typical signal-to-noise ratio of -95 dB at 96fs operation.

Encoders, Decoders, Converters Feature Summary

• Integrates a digital servo processor, CD decoder, and bitstream DAC in a single chip.
• Supports up to 2 times speed mode and lock-to-disc functionality for shock resistance.
• Includes a full error correction strategy with t=2 and e=4 capabilities.
• Features an integrated bitstream DAC with differential outputs and a 3rd order noise shaper.

Encoders, Decoders, Converters Applications

• Video CD (VCD) player systems
• Compact Disc digital audio playback devices
• Digital servo control circuits for optical disc drives

Encoders, Decoders, Converters Procurement Notes

Verify the specific ordering suffix against the manufacturer's current product specification to confirm package type and lead time requirements. Ensure compatibility with the required crystal frequency and microcontroller interface protocol before integration into the design.

Encoders, Decoders, Converters Selection Notes

Select this component when a combined decoder and servo solution is required for Video CD applications. Confirm that the system design accommodates the QFP64 package dimensions and that the power supply voltage remains within the specified 3.0 V to 3.6 V range for reliable operation.

Encoders, Decoders, Converters Part Context

The SAA7327H belongs to the Philips Semiconductors (now NXP) CD7 II family. It is software compatible with the earlier SAA737x (CD7) series but adds enhanced functions controlled by shadow registers. This lineage ensures familiarity for designers previously using the CD7 architecture while providing improved playability and servo performance.

Encoders, Decoders, Converters Replacement Considerations

The SAA7327H is functionally equivalent to the base SAA7327 model. Designers should verify pinout compatibility if substituting between different package variants within the same functional family.