IDTSTAC9753XXTAEB2XR IDT, Integrated Device Technology Inc, IDTSTAC9753XXTAEB2XR Datasheet - Page 21

• Manufacturer Part Number: IDTSTAC9753XXTAEB2XR
• Description: IC CODEC AC'97 MIC/JACK 48-QFP
• Manufacturer: IDT, Integrated Device Technology Inc
• Type: Audio Codec '97r

Specifications of IDTSTAC9753XXTAEB2XR

• Resolution (bits): 20 b
• Number Of Adcs / Dacs: 2 / 2
• Sigma Delta: Yes
• Voltage - Supply, Analog: 3.14 V ~ 3.47 V; 4.75 V ~ 5.25 V
• Voltage - Supply, Digital: 3.14 V ~ 3.47 V
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Surface Mount
• Package / Case: 48-QFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: STAC9753XXTAEB2XR

IDT™
TWO-CHANNEL, 20-BIT, AC’97 2.3 CODECS WITH HEADPHONE DRIVE, SPDIF OUTPUT MICROPHONE & JACK SENSING
STAC9752/9753
TWO-CHANNEL, 20-BIT, AC’97 2.3 CODECS WITH HEADPHONE DRIVE, SPDIF OUTPUT MICROPHONE & JACK SENSING
3.1.
Split Independent Power Supply Operation
In PC applications, one power supply input to the STAC9752/9753 may be derived from a supply
regulator and the other directly from the PCI power supply bus. When power is applied to the PC, the
regulated supply input to the IC will be applied some time delay after the PCI power supply. Without
proper on-chip partitioning of the analog and digital circuitry, some manufacturer's CODECs would
be subject to on-chip SCR type latch-up.
IDT’s STAC9752/9753 specifically allows power-up sequencing delays between the analog (AVddx)
and digital (VDddx) supply pins. These two power supplies can power-up independently and at dif-
ferent rates with no adverse effects to the CODEC. The IC is designed with independent analog and
digital circuitry that prevents on-chip SCR type latch-up.
However, the STAC9752/9753 is not designed to operate for extended periods with only the analog
supply active.
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STAC9752/9753
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