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Part Number: AD1838A
Description: The AD1838A is a high performance single-chip codec featuring three stereo DACs and one stereo ADC. Each DAC comprises ...
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AD1838A
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General Description
AD1838A General Description
The AD1838A 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 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 AD1838A also contains an on-chip reference with a nominal value of 2.25 V.
The AD1838A contains a flexible serial interface that allows glueless connection to a variety of DSP chips, AES/EBU receivers, and sample rate converters. The AD1838A can be configured in left-justified, right-justified, I2S, or DSP compatible serial modes. Control of the AD1838A is achieved by means of an SPI® compatible serial port. While the AD1838A 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 AD1838A is available in a 52-lead MQFP package and is specified for the industrial temperature range of 40ºC to +85ºC.
AD1838A Maximum Ratings
(TA = 25°C, 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°C to +85°C
AD1838A 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°(TM)Leas Sensitive to Jitter
Differential Output for Optimum Performance ADCs: (R)C95 dB THD + N, 105 dB SNR an Dynamic Range DACs: (R)C95 dB THD + N, 108 dB SNR an 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 * f S , 512 * f S , and 768 * f S Master Mode Clocks
Power-Down Mode Plus Soft Power-Down Mode
Flexible Serial Data Port with Right-Justified, Left- Justified I2S Compatible, and DSP Serial Port Modes ,
TDM Interface Mode Supports 8 In/8 Out Using a Single SHARC® SPORT
52-Lead MQFP Plastic Package
AD1838A Typical Application
DVD Video and Audio Players
Home Theater Systems
Automotive Audio Systems
Audio/Visual Receivers
Digital Audio Effects Processors
AD1838A Connection Diagram
AD1838A
PDF/DataSheet Download
- Datasheet: AD1838A
- File Size: 544177 KB
- Manufacturer: AD [Analog Devices]
- Click here to Download
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