Analog Devices AD1870
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. The AD1870 accepts a 256 × fS or a 384 × fS input clock (fS is the sampling frequency) and operates in both serial port Master and Slave Modes.| Part No. | AD1870 |
|---|---|
| Datasheet | AD1870 Download |
| Manufacturer |  Analog Devices |
| Description | Single-Supply 16-Bit Stereo ADC |
| Buy | Stock & Price |
FEATURES
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, 64؋ Oversampling ⌺-⌬ Modulator Three-Stage, Linear-Phase Decimator 256 ؋ fS or 384 ؋ fS Input Clock Less than 100●W (Typ) Power-Down Mode Input Overrange Indication On-Chip Voltage Reference Flexible Serial Output Interface 28-Lead SOIC Package
APPLICATIONS
Consumer Digital Audio Receivers Digital Audio Recorders, Including Portables CD-R, DCC, MD, and DAT Multimedia and Consumer Electronics Equipment Sampling Music Synthesizers PRODUCT OVERVIEW 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. In Slave Mode, all clocks must be externally derived from a common source. Input signals are sampled at 64 × fS onto internally buffered switched capacitors, eliminating external sample-and-hold amplifiers and minimizing the requirements for antialias filtering at the input.
