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AD1837A:  2 ADC, 8 DAC, 96 kHz, 24-Bit Sigma Delta CODEC

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 multi-bit sigma-delta modulator featuring Analog Devices patented technology and a continuous-time voltage out analog section with single-ended outputs. Each DAC has independent volume control and clickless mute ...More

AD1837A:  2 ADC, 8 DAC, 96 kHz, 24-Bit Sigma Delta CODEC

Product 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 multi-bit sigma-delta modulator featuring Analog Devices patented technology and a continuous-time voltage out analog section with single-ended outputs. 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 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 compatible serial port. While the AD1837A 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 AD1837A is available in a 52 Lead MQFP package and is specified for the industrial temperature range of -40ºC to +85ºC.

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TRAINING, TUTORIALS & SEMINARS

  • 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" 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
  • 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 Single SHARC® SPORT
  • 52-Lead MQFP Plastic Package
  • # ADC: 2
  • # DAC: 8
  • ADC Dynamic Range (dB): 105dB
  • ADC SNR (dB): 105dB
  • DAC Dynamic Range (dB): 108dB
  • DAC SNR (dB): 108dB
  • THD+N (dB): ADC: -95,DAC: -95
  • Product Description: 96 kHz, 24-bit Sigma-Delta CODEC

Functional Block Diagram for AD1837A

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* The pricing listed here is provided only for budgetary purposes as recommended list price in U.S. Dollars in the United States ex factor per unit for the stated volume. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.
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