AD1888JCP

Overview

The AD1888JCP is an AC '97 2.3 compatible SoundMAX codec manufactured by Analog Devices Inc., housed in a 48-lead LQFP package. It features six 20-bit sigma-delta DAC channels supporting 5.1 surround sound and two 16-bit ADCs. The device operates with a digital supply (DVDD) of 3.3 V and an analog supply (AVDD) of 5.0 V, consuming 563 mW at standard test conditions. Key electrical parameters include a 90 dB dynamic range for both ADC and DAC paths, a 1.5 dB volume step size, and support for sample rates up to 96 kHz. It integrates stereo headphone amplifiers, S/PDIF output, and jack sense logic.

Feature Summary

• Supports 5.1 channel audio processing with integrated stereo headphone amplifiers
• Features selectable front and rear microphone inputs with programmable preamplifier gain
• Includes integrated PLL for crystal-free system clocking operation
• Provides automatic topology switching via jack sense logic

Applications

• AC '97 compliant desktop and notebook computer audio subsystems
• Multimedia systems requiring 5.1 surround sound playback
• Telephony applications utilizing the dedicated mono output and phone-in interface

Procurement Notes

Verify the specific suffix JCP corresponds to the 48-lead LQFP package variant when sourcing. Confirm that the component meets the required AC '97 2.3 interface specifications for your host controller. Ensure proper decoupling capacitors are placed near the AVDD and DVDD pins to maintain signal integrity and power supply rejection ratios as defined in the datasheet.

Selection Notes

Select this component for designs requiring a single-chip solution for AC '97 audio interfaces with integrated headphone drivers. Consider the thermal resistance characteristics of the LQFP package if operating in enclosed chassis environments. Verify that the host system can provide the necessary 24.576 MHz or reference clock signals for the internal PLL functionality.

Part Context

The AD1888 belongs to Analog Devices' SoundMAX family of high-definition audio codecs designed for PC platforms. It replaces older discrete audio solutions by integrating multiple DACs, ADCs, and amplifiers into a single package. This integration reduces board space and simplifies the design of consumer electronics requiring multi-channel audio capabilities.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.