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Part Number: AD1837A
Description: The AD1837A is a high performance single-chip codec featuring four stereo DACs and one stereo ADC. Each DAC comprise...
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AD1837A
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General Description
AD1837A General Description
The AD1837A 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 multibit -modulator featuring Analog Devices' patented technology, and a continuous-time voltage out analog section. Each DAC has inde-pendent volume control and clickless mute functions. The ADC comprises two 24-bit conversion channels with multibit -modulators and decimation filters.
The AD1837A also contains an on-chip reference with a nominal value of 2.25 V.
The AD1837A contains a flexible serial interface that allows for glueless connection to a variety of DSP chips, AES/EBU receivers, and sample rate converters. The AD1837A can be configured in left-justified, right-justified, I2S, or DSP compatible serial modes.Control of the AD1837A is achieved by means of an SPI compat-ible serial port. While the AD1837A can be operated from a single 5 V supply, it also features a separate supply pin for its digital inter-face, which allows the device to be interfaced to other devices using 3.3 V power supplies.
The AD1837A is available in a 52-lead MQFP package and is speci-fied for the industrial temperature range of 40ºC to +85ºC.
AD1837A Maximum Ratings
(TA = 25, unless otherwise noted.)
AVDD, DVDD, ODVDD to AGND, DGND
...................................................................0.3 V to +6 V
AGND to DGND . . . . . . . . . . . . . . . . . . . . 0.3 V to +0.3 V
Digital I/O Voltage to DGND . . . 0.3 V to ODVDD + 0.3 V
Analog I/O Voltage to AGND . . . . 0.3 V to AVDD + 0.3 V
Operating Temperature Range
Industrial (A Version) . . . . . . . . . . . . . ... . 40 to +85
AVDD, DVDD, ODVDD to AGND, DGND
...................................................................0.3 V to +6 V
AGND to DGND . . . . . . . . . . . . . . . . . . . . 0.3 V to +0.3 V
Digital I/O Voltage to DGND . . . 0.3 V to ODVDD + 0.3 V
Analog I/O Voltage to AGND . . . . 0.3 V to AVDD + 0.3 V
Operating Temperature Range
Industrial (A Version) . . . . . . . . . . . . . ... . 40 to +85
AD1837A 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 Outputs
-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 Plus Soft Power-Down Mode
Flexible Serial Data Port with Right-Justified, Left-Justified, ISC ompatible, and DSP Serial Port Modes
TDM Interface Mode Supports 8 In/8 Out Using a Single SHARC® SPORT
52-Lead MQFP Plastic Package
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 Outputs
-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 Plus Soft Power-Down Mode
Flexible Serial Data Port with Right-Justified, Left-Justified, ISC ompatible, and DSP Serial Port Modes
TDM Interface Mode Supports 8 In/8 Out Using a Single SHARC® SPORT
52-Lead MQFP Plastic Package
AD1837A Typical Application
DVD Video and Audio Players
Home Theater Systems
Automotive Audio Systems
Audio/Visual Receivers
Digital Audio Effects Processors
Home Theater Systems
Automotive Audio Systems
Audio/Visual Receivers
Digital Audio Effects Processors
AD1837A Connection Diagram
AD1837A
PDF/DataSheet Download
- Datasheet: AD1837A
- File Size: 411559 KB
- Manufacturer: AD [Analog Devices]
- Click here to Download
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