AD1835A: 2 ADC, 8 DAC, 96 kHz, 24-Bit Sigma Delta Codec

The AD1835A is a high-performance single-chip CODEC featuring four stereo DACs and one stereo ADC.

Each DAC comprises a high-performance digital interpolation filter, a multi-bit sigma-delta 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 multi-bit sigma-delta modulators and decimation filters.

The AD1835A also contains an on-chip reference with a nominal value of 2.25 V.

The AD1835A contains a flexible serial interface that allows for glueless connection to a variety of DSP chips, AES/EBU receivers and sample rate converters. The AD1835A can be configured in Left-Justified, Right-Justified, I2S or DSP compatible serial modes. Control of the AD1835 is achieved by means of an SPI compatible serial port. While the AD1835A can be operated from a single 5 V supply, it also features a separate supply pin for its digital interface, which allows the device to be interfaced to other devices using 3.3 V power supplies.

The AD1835A is available in a 52 Lead MQFP package and is specified for the industrial temperature range of -40oC to +85oC.

AD1835A 特点

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 one DAC
Supports 16-/20-/24-Bit Word Lengths
Multibit Sigma-Delta Modulators with "Perfect Differential Linearity Restoration"
Data Directed Scrambling DACs -Least Sensitive to Jitter
Differential Output for Optimum Performance
ADCs:-95 dB THD +N, 105 dB SNR and Dynamic Range
DACs:-95 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 x fS, 512 x fS, and 768 x fS Master Mode Clocks
Power-Down Mode Plus Soft Power-Down Mode

AD1835A 功能框图

AD1835A 芯片订购指南

产品型号	产品状态	封装	引脚	温度范围
AD1835AASZ	量产	52 ld MQFP (13.20mm width	52	工业
AD1835AASZ-REEL	量产	52 ld MQFP (13.20mm width)	52	商业