AD1839A

Features:

5 V stereo audio system with 3.3 V tolerant digital interface
Supports up to 96 kHz sample rates
192 kHz sample rate available on 1 DAC
Supports 16-/20-/24-bit word lengths
Multibit - modulators with perfect differential linearity restoration for reduced idle tones and noise floor
Data-directed scrambling DACs-least sensitive to jitter
Single-ended output
ADCs: −95 dB THD + N, 105 dB SNR and dynamic range
DACs: −92 dB THD + N, 108 dB SNR and dynamic range
On-chip volume controls per channel with 1024-step linear scale
DAC and ADC software controllable clickless mutes
Digital de-emphasis processing
Supports 256 * fS, 512 * fS, and 768 * fS master mode clocks
Power-down mode and soft power-down mode
Flexible serial data port with right-justified, left-justified, I2S compatible, and DSP serial modes
TDM interface mode supports 8-in/8-out operation using a single SHARC^® SPORT
52-lead MQFP plastic package




Application

DVD video and audio players
Home theater systems
Automotive audio systems
Audio/visual receivers
Digital audio effects process




Pinout








Specifications

Parameter	Rating
AVDD, DVDD, ODVDD to AGND, DGND AGND to DGND Digital I/O Voltage to DGND Analog I/O Voltage to AGND Operating Temperature Range Industrial (A Version)	−0.3 V to +6.0 V −0.3 V to +0.3 V −0.3 V to ODVDD + 0.3 V −0.3 V to AVDD + 0.3 V −40°C to +85°C

Description

The AD1839A is a high performance single-chip codec that features three stereo DACs and one stereo ADC. Each DAC comprises a high performance digital interpolation filter, a multibit - modulator featuring Analog Devices' patented technology, and a continuous-time voltage-out analog section. Each DAC has independent volume control and clickless mute functions. The ADC comprises two 24-bit conversion channels with multibit - modulators and decimation filters.

The AD1839A also contains an on-chip reference with a nominal value of 2.25 V.

The AD1839A contains a flexible serial interface that allows glueless connection to a variety of DSP chips, AES/EBU receivers, and sample rate converters. The AD1839A can be configured in left-justified, right-justified, I2S, or DSP compati-ble serial modes. Control of the AD1839A is achieved by means of an SPI® compatible serial port. While the AD1839A can be operated from a single 5 V supply, it also features a separate supply pin for its digital interface that allows the device to be interfaced to other devices using 3.3 V power supplies. The AD1839A is available in a 52-lead MQFP package and is specified for the −40°C to +85°C industrial temperature range.

The AD1839S is a high-performance single-chip CODEC featuring three stereo DACs and one stereo ADC.

Each DAC comprises a high-performance digital interpolation filter, a multi-bit