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AD1870:  Single-Supply 16-Bit Sigma Delta Stereo ADC

The input section of the AD1870 uses autocalibration to correct any dc offset voltage present in the circuit, provided that the inputs are ac-coupled. The single-ended dc input voltage can swing The AD1870 is a stereo, 16-bit oversampling ADC based on sigma-delta technology intended primarily for digital audio bandwidth applications requiring a single 5 V power supply. Each single-ended ...More

AD1870:  Single-Supply 16-Bit Sigma Delta Stereo ADC

Product Description

The input section of the AD1870 uses autocalibration to correct any dc offset voltage present in the circuit, provided that the inputs are ac-coupled. The single-ended dc input voltage can swing The AD1870 is a stereo, 16-bit oversampling ADC based on sigma-delta technology intended primarily for digital audio bandwidth applications requiring a single 5 V power supply. Each single-ended channel consists of a fourth-order one-bit noise shaping modulator and a digital decimation filter. An on-chip voltage reference, stable over temperature and time, defines the full-scale range for both channels. Digital output data from both channels are time-multiplexed to a single, flexible serial interface. The AD1870 accepts a 256 x fS or a 384 x fS input clock (fS is the sampling frequency) and operates in both serial port "master" and "slave" modes. In slave mode, all clocks must be externally derived from a common source.

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  • Single 5 V Power Supply
  • Single-Ended Dual-Channel Analog Inputs
  • 92 dB (Typ) Dynamic Range
  • 90 dB (Typ) S/(THD + N)
  • 0.006 dB Decimator Pass-Band Ripple
  • Fourth Order, 64X Oversampling Σ-Δ Modulator
  • Three-Stage, Linear-Phase Decimator
  • 256 x fS or 384 x fS Input Clock
  • Less than 100 µW (Typ)
    Power-Down Mode
  • Input Overrange Indication,
    On-Chip Voltage Reference
  • Flexible Serial Output Interface
  • 28-Lead SOIC Package
  • DNR (dB): 92dB
  • THD+N @ 1kHz (-dB): 90dB
  • Product Description: Single-Supply, 16-Bit (Sigma-Delta) Stereo ADC

Functional Block Diagram for AD1870

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AD1877 94 - 90 Single-Supply, 16-Bit (Sigma-Delta) Stereo ADC $7.59
AD1870 92 - 90 Single-Supply, 16-Bit (Sigma-Delta) Stereo ADC -
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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.
** Pricing is currently unavailable. Click on the product number to see the Product Page for additional information.