AD7678

18位， 2.5 LSB INL ， 570 kSPS的SAR ADC 18-Bit, 2.5 LSB INL, 570 kSPS SAR ADC

GENERAL DESCRIPTION

The AD7665 is a 16-bit, 570 kSPS, charge redistribution SAR, analog-to-digital converter that operates from a single 5 V power supply. It contains a high speed 16-bit sampling ADC, a resistor input scaler that allows various input ranges, an internal conversion clock, error correction circuits, and both serial and parallel system interface ports.

FEATURES

  Throughput

     570 kSPS Warp Mode

     500 kSPS Normal Mode

  INL: ±2.5 LSB Max ±0.0038% of Full Scale

  16-Bit Resolution with No Missing Codes

  S/N+D: 90 dB Typ @ 180 kHz

  THD: –100 dB Typ @ 180 kHz

  Analog Input Voltage Ranges

     Bipolar: ±10 V, ±5 V, ±2.5 V

     Unipolar: 0 V to 10 V, 0 V to 5 V, 0 V to 2.5 V

  Both AC and DC Specifications

  No Pipeline Delay

  Parallel 8/16 Bits and Serial 5 V/3 V Interface

  SPI®/QSPI™/MICROWIRE™/DSP Compatible

  Single 5 V Supply Operation

  Power Dissipation

     64 mW Typical

     15 μW @ 100 SPS

  Power-Down Mode: 7 μW Max

  Package: 48-Lead Quad Flatpack LQFP

  Package: 48-Lead Chip Scale LFCSP

  Pin-to-Pin Compatible Upgrade of the AD7664/AD7663

APPLICATIONS

  Data Acquisition

  Communication

  Instrumentation

  Spectrum Analysis

  Medical Instruments

  Process Control