AD1980JSTZ

Overview

The AD1980JSTZ is an AC '97 2.3 compatible SoundMAX codec manufactured by Analog Devices Inc., housed in a 48-lead LQFP package. It features six DAC channels for 5.1 surround sound, a 20-bit PCM DAC with 90 dB dynamic range, and integrated stereo headphone amplification. The device supports variable rate audio up to 96 kHz double rate, includes S/PDIF output, and provides multiple analog inputs such as line-level mono phone, high-quality CD, selectable MIC with preamp, and AUX/Line-In stereo inputs.

Feature Summary

• Supports AC '97 2.3 standard with 6-channel DAC for 5.1 surround sound
• Integrates parametric equalizer and stereo MIC preamp support
• Includes built-in PLL for system clocking and jack sense for auto topology switching
• Features software-controlled VREF_OUT for microphone bias and external amplifier power-down control

Applications

• AC '97 compliant motherboard audio subsystems
• 5.1 channel surround sound systems
• Desktop PC audio codecs
• Multimedia computer platforms requiring integrated headphone amplification

Procurement Notes

Verify the specific ordering suffix JSTZ corresponds to the 0°C to 70°C temperature range and 48-lead LQFP package option ST-48. Confirm that the component meets RoHS compliance requirements if applicable to your manufacturing process. Ensure proper ESD precautions are observed during handling due to the sensitivity of the CMOS circuitry.

Selection Notes

Select this component for designs requiring full AC '97 2.3 compatibility with integrated 5.1 channel decoding capabilities. It is suitable for applications needing a single-chip solution for analog mixing, digital-to-analog conversion, and analog-to-digital conversion without external DSP processing. Consider the 48-lead LQFP footprint constraints and thermal resistance characteristics when designing the PCB layout.

Part Context

The AD1980 belongs to Analog Devices' SoundMAX codec family, designed specifically for the AC '97 interface standard prevalent in early 2000s computing hardware. It serves as a bridge between digital audio data streams from the host chipset and analog audio signals for speakers and headphones. The JSTZ variant denotes the commercial temperature grade and lead-free LQFP packaging.

Replacement Considerations

Direct replacements within the same AC '97 family include the AD1980JST (non-lead-free) or other Analog Devices codecs like the AD1981 series if pin compatibility and feature sets align with the design requirements. Verify register compatibility and pinout before substitution.