Datasheet AD1835A (Analog Devices)

2 ADC, 8 DAC, 96 kHz, 24-Bit - Codecs AD1835A FEATURES Supports 256 fS, 512 fS, and 768 fS Master 5 V Stereo Audio System with 3.3 V Tolerant Digital Mode Clocks Interface Power-Down Mode Plus Soft Power-Down Mode Supports up to 96 kHz Sample Rates Flexible Serial Data Port with Right-Justified, Left- 192 kHz Sample Rate Available on 1 DAC Justified, I2S Compatible, and DSP Serial Port Modes Supports 16-/20-/24-Bit Word Lengths TDM Interface Mode Supports 8-In/8-Out Using a Multibit - Modulators with Single SHARC® SPORT Perfect Differential Linearity Restoration for 52-Lead MQFP Plastic Package Reduced Idle Tones and Noise Floor APPLICATIONS Data Directed Scrambling DACs—Least DVD Video and Audio Players Sensitive to Jitter Home Theater Systems Differential Output for Optimum Performance Automotive Audio Systems ADCs: –95 dB THD + N, 105 dB SNR, and Audio/Visual Receivers Dynamic Range Digital Audio Effects Processors DACs: –95 dB THD + N, 108 dB SNR, and Dynamic Range PRODUCT OVERVIEW On-Chip Volume Controls per Channel with
The AD1835A is a high performance, single-chip codec fea-
1024-Step Linear Scale
turing four stereo DACs and one stereo ADC. Each DAC
DAC and ADC Software Controllable Clickless Mutes
comprises a high performance digital interpolation filter, a
Digital De-emphasis Processing
multibit ⌺-⌬ modulator featuring Analog Devices’ patented technology, and a continuous-time voltage out analog section. (continued on page 11)
FUNCTIONAL BLOCK DIAGRAM DVDD DVDD ODVDD ALRCLK ABCLK ASDATA CCLK CLATCH CIN COUT MCLK PD/RST M/S AVDD AVDD DLRCLK CONTROL PORT CLOCK DBCLK OUTLP1 DSDATA1 SERIAL DATA VOLUME OUTLN1 DIGITAL - I/O PORT FILTER DAC OUTRP1 DSDATA2 VOLUME OUTRN1 DSDATA3 OUTLP2 DSDATA4 VOLUME DIGITAL - OUTLN2 FILTER DAC OUTRP2 VOLUME OUTRN2 ADCLP - DIGITAL OUTLP3 VOLUME ADC FILTER - OUTLN3 ADCLN DIGITAL FILTER DAC VOLUME OUTRP3 OUTRN3 ADCRP - OUTLP4 DIGITAL VOLUME ADC FILTER DIGITAL - OUTLN4 ADCRN FILTER DAC VOLUME OUTRP4 OUTRN4 FILTD AD1835A V FILTR REF DGND DGND AGND AGND AGND AGND
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Document Outline FEATURES APPLICATIONS PRODUCT OVERVIEW FUNCTIONAL BLOCK DIAGRAM SPECIFICATIONS TIMING SPECIFICATIONS ABSOLUTE MAXIMUM RATINGS TEMPERATURE RANGE ORDERING GUIDE PIN CONFIGURATION PIN FUNCTION DESCRIPTIONS Typical Performance Characteristics DEFINITIONS Dynamic Range Signal-to-(Total Harmonic Distortion + Noise)[S/(THD + N)] Pass Band Pass-Band Ripple Stop Band Gain Error Interchannel Gain Mismatch Gain Drift Crosstalk (EIAJ Method) Power Supply Rejection Group Delay Group Delay Variation GLOSSARY FUNCTIONAL OVERVIEW ADCs DACs DAC and ADC Coding AD1835A CLOCKING SCHEME Selecting DAC Sampling Rate Selecting an ADC Sample Rate RESET and Power-Down Power Supply and Voltage Reference Serial Control Port Serial Data Ports—Data Format Packed Modes Auxiliary (TDM) Mode CONTROL/STATUS REGISTERS DAC Control Registers Sample Rate Power-Down/Reset DAC Data-Word Width DAC Data Format De-emphasis Mute DAC Stereo Replicate DAC Volume Control ADC Control Registers ADC Peak Level Sample Rate ADC Power-Down High-Pass Filter ADC Data-Word Width ADC Data Format Master/Slave Auxiliary Mode ADC Peak Readback CASCADE MODE Dual AD1835A Cascade OUTLINE DIMENSIONS Revision History