GENERAL DESCRIPTION
The AD7663 is a 16-bit, 250 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.
The AD7663 is hardware factory-calibrated and is comprehensively tested to ensure such ac parameters as signal-to-noise ratio (SNR) and total harmonic distortion (THD), in addition to the more traditional dc parameters of gain, offset, and linearity.
It is fabricated using Analog Devices’ high performance, 0.6 micron CMOS process and is available in a 48-lead LQFP and a tiny 48-lead LFCSP with operation specified from –40°C to +85°C.

FEATURES
   Throughput: 250 kSPS
   INL: ±3 LSB Max (±0.0046% of Full Scale)
   16-Bit Resolution with No Missing Codes
   S/(N+D): 90 dB Typ @ 100 kHz
   THD: –100 dB Typ @ 100 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
      35 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 with the AD7660/AD7664/AD7665
  
APPLICATIONS
   Data Acquisition
   Motor Control
   Communication
   Instrumentation
   Spectrum Analysis
   Medical Instruments
   Process Control