AD1871 Stereo Audio, 24-bit, 96kHz, Multi-bit Sigma Delta ADC

The AD1871 is a stereo audio ADC intended for digital audio applications requiring high performance analog-to-digital conversion. It features two 24-bit conversion channels each with programmable gain amplifier (PGA), multi-bit sigma-delta modulator and decimation filters. Each channel provides 97 dB of THD+N and 107 db of Dynamic Range making the AD1871 suitable for applications such as Digital Audio Recorders and Mixing Consoles.

Features and Benefits
  • 5.0 V Stereo Audio ADC with 3.3 V Tolerant Digial Interface
  • Supports 96 kHz Sample Rates
  • Supports 16-/20-/24-bit Word Lengths
  • Multibit Sigma-Delta Modulators with "Perfect Differential Linearity Restoration" for Reduced Idle Tones and Noise Floor
  • 105 dB (Typ) Dynamic Range
  • Supports 256/512 and 768 x fS Master Clocks
  • Device Control via SPI Compatible Serial Port or Optional Control Pins
  • Flexible Serial Data Port allows 
    Right-Justified, Left-Justified, I2S
    Compatible and DSP Serial Port 
    Modes Cascadable (up to Four 
    Devices) from a Single DSP 
    SPORT
  • On-Chip Reference
  • 28-Lead SSOP Package
Audio & Video Products
Software & Systems Requirements
Data Sheets
Documentnote
AD1871: Stereo Audio, 24-bit, 96 kHz, Multi-bit Sigma Delta ADC Data Sheet (Rev. 0)PDF 1384 kB
Application Notes
Documentnote
AN-1006: Using the EVAL-ADUSB2EBZ (Rev. A)PDF 349 kB
AN-327: DAC ICs: How Many Bits Is Enough?PDF 345 kB
AN-211: The Alexander Current-Feedback Audio Power AmplifierPDF 1154 kB
Order Information
Part NumberPackagePacking QtyTemp RangePrice 100-499Price 1000+RoHS
AD1871YRSZ Production28 ld SSOPOTH 47-40 to 105C00Y
AD1871YRSZ-REEL Production28 ld SSOPREEL 1500-40 to 105C00Y
Evaluation Boards
Part NumberDescriptionPriceRoHS
EVAL-AD1871EBZEvaluation Board166.67Y
EVAL-ADUSB2EBZUSB Interface80Y
AD1871: Stereo Audio, 24-bit, 96 kHz, Multi-bit Sigma Delta ADC Data Sheet (Rev. 0) ad1871
AN-1006: Using the EVAL-ADUSB2EBZ (Rev. A) ad1938
AN-327: DAC ICs: How Many Bits Is Enough? ad73311
AN-211: The Alexander Current-Feedback Audio Power Amplifier ad73311