STAC9721T

The STAC9721T is designed as a general-purpose 18-bit stereo, full duplex, audio codec that conforms to the analog component specification of AC'97 (Audio Codec 97 Component Specification Rev. 2.1).

STAC9721T has thirteen features. (1)High performance technology. (2)Energy saving power down modes. (3)18-bit full duplex stereo ADC, DACs. (4)AC-Link protocol compliance. (5)3.3V multiple power supply options. (6)Pin compatible with the STAC9700/44/45. (7)SigmaTel surround (SS3D) stereo enhancement. (8)EAPDexternal amplifier power down control. (9)Multi-codec option (intel AC'97 rev 2.1). (10)Six analog line-level inputs. (11)48-pin TQFP. (12)LINE-to-LINE SNR 102dB. (13)The STAC9723 is tested at +3.3V. Those are all the main features.

Some absolute maximum ratings of STAC9721T have been concluded into several points as follow. (1)Its voltage on any pin relative to ground would be from Vss-0.3V to Vdd+0.3V. (2)Its operating temperature range would be from 0°C to 70°C. (3)Its storage temperature range would be from -55°C to 125°C. (4)Its soldering temperature would be 260°C for 10 seconds. (5)Its output current per pin would be +/-4mA except Vrefout=+/-5mA. It should be noted that stresses above those listed in absolute maximum ratings may cause permanent damage to device.

Also some electrical STAC9721T characteristics are concluded as follow. (1)Its input voltage range would be min -0.3V and max DVdd+0.3V. (2)Its low level input range would be max 0.35xDVdd. (3)Its high level input voltage would be min 0.65xDVdd. (4)Its high level output voltage would be min 0.90xDVdd. (5)Its low level output voltage would be max 0.1xDVdd. (6)Its input leakage current would be min -10uA and max 10uA. (7)Its output leakage current would be min -10uA and max 10uA. (8)Its output buffer drive current would be typ 5mA. (9)Its full scale input voltage would be typ 1.0Vrms for line inputs and typ 0.1Vrms for mic inputs. And so on. If you have any question or suggestion or want to know more information about STAC9721T please contact us for details. Thank you!