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Product Detailed Parameters
- Description：IC CODEC STEREO 6-DAC 20B 48LQFP
- Series：SoundMAX®
- Mfr：Analog Devices Inc.
- Package：Bag
- Type：Audio Codec '97
- Data Interface：Serial
- Resolution (Bits)：16, 20 b
- Sigma Delta：No
- S/N Ratio, ADCs / DACs (db) Typ：-
- Dynamic Range, ADCs / DACs (db) Typ：82 / 90
- Voltage - Supply, Analog：4.75V ~ 5.25V
- Voltage - Supply, Digital：3.15V ~ 3.45V
- Operating Temperature：0°C ~ 70°C
- Mounting Type：Surface Mount
- Package / Case：48-LQFP
- Supplier Device Package：48-LQFP (7x7)
- Grade：-
- Qualification：-
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Overview
The AD1980JST is an AC '97 SoundMAX codec manufactured by Analog Devices Inc. It features six DAC channels for 5.1 surround sound and a 20-bit PCM DAC with greater than 90 dB dynamic range. The device includes an integrated stereo headphone amplifier, variable rate audio up to 96 kHz, and S/PDIF output. It supports jack sense for auto topology switching and software-controlled VREF_OUT for MIC bias. The component operates within a temperature range of 0°C to 70°C and is housed in a 48-lead LQFP package.
Feature Summary
- Supports 5.1 surround sound via six dedicated DAC channels
- Integrates a parametric equalizer and stereo microphone preamp
- Includes an internal PLL for system clocking and jack sense functionality
Applications
- AC '97 compliant motherboard audio subsystems
- 5.1 channel surround sound systems
- S/PDIF digital audio output interfaces
Procurement Notes
Verify the specific ordering suffix JST against the manufacturer's current documentation to confirm the 48-lead LQFP package option and commercial temperature range. Ensure compatibility with the host system's AC '97 interface requirements before procurement.
Selection Notes
Select this component for applications requiring high-resolution 20-bit DACs and integrated headphone amplification. Consider the AC '97 interface constraints and verify that the required analog supply voltage of 5.0 V aligns with the system design specifications.
Part Context
This part belongs to the Analog Devices SoundMAX codec family designed for PC audio applications. It provides comprehensive audio processing capabilities including mixing, attenuation, and gain control through its extensive register set.
Replacement Considerations
Consult the official datasheet for cross-reference information. Verify pinout and register compatibility if substituting with other AC '97 codecs from the same manufacturer.
FAQ
What is the maximum sample rate supported by the AD1980?
The AD1980 supports double rate audio with a maximum sample rate (fS) of 96 kHz.
How does the AD1980 handle microphone input?
It features selectable MIC inputs with a preamp offering gain settings of 0 dB, 10 dB, 20 dB, or 30 dB, along with software-controlled VREF_OUT for biasing.
What is the resolution of the ADC in this codec?
The Analog-to-Digital Converter (ADC) resolution is 16 bits.
