Product Summary

The STAC9708T is a general purpose 18-bit, full duplex, audio codec that conforms to the analog component specification of AC97 (Audio Codec 97 Component Specification Rev. 2.1). The STAC9708T incorporates SigmaTel’s proprietary Sigma-Delta technology to achieve a DAC SNR in excess of 95dB. The DACs, ADCs, and mixer are integrated with analog I/Os, which include four analog line-level stereo inputs, two analog line-level mono inputs, two stereo outputs, and one mono output channel. Also included are two additional high quality DACs, with independent volume control, for multi-channel applications. With SigmaTel’s 3D stereo enhancement (SS3D), independently selectable on both LINE OUT and DAC OUT, the multi-channel mode immerses the user in a richer and livelier listening experience.

Parametrics

STAC9708T absolute maximum ratings: (1)Voltage on any pin relative to Ground: Vss - 0.3V to Vdd + 0.3V; (2)Operating Temperature: 0 to 70℃; (3)Storage Temperature: -55 to +125℃; (4)Soldering Temperature: 260℃ for 10 seconds; (5)Output Current per Pin: ± 4 mA except Vrefout = ± 5mA.

Features

STAC9708T features: (1)High performance ∑△ technology; (2)Two additional high quality DAC’s for multi-channel applications; (3)18-bit full duplex stereo ADC, DACs; (4)AC-Link protocol compliance; (5)Multiple power supply options; (6)Pin compatible with the STAC9704/07; (7)SigmaTel Surround (SS3D) Stereo Enhancement; (8)Energy saving power down modes; (9)Multi-Codec option (Intel AC’97 rev 2.1); (10)Six analog line-level inputs; (11)48-pin TQFP; (12)SNR > 95 dB through Mixer and DAC.

Diagrams

STAC9708T block diagram

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1-10: $49.50
10-100: $44.55
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1-10: $64.07
10-100: $59.80
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