GENERAL DESCRIPTION
The AD7952 is a 14-bit, charge redistribution, successive approximation register (SAR) architecture analog-to-digital converter (ADC) fabricated on Analog Devices, Inc.’s iCMOS high voltage process. The device is configured through hardware or via a dedicated write-only serial configuration port for input range and operating mode. The AD7952 contains a high speed 14-bit sampling ADC, an internal conversion clock, an internal reference (and buffer), error correction circuits, and both serial and parallel system interface ports. A falling edge on CNVST samples the fully differential analog inputs on IN+ and IN−.
The AD7952 features four different analog input ranges and three different sampling modes: warp mode for the fastest throughput, normal mode for the fastest asynchronous throughput, and impulse mode where power is scaled with throughput. Operation is specified from −40°C to +85°C.

FEATURES
   Multiple pins/software-programmable input ranges
      +5 V (10 V p-p), +10 V (20 V p-p), ±5 V (20 V p-p),
      ±10 V (40 V p-p)
   Pins or serial SPI®-compatible input ranges/mode selection
   Throughput
      1 MSPS (warp mode)
      800 kSPS (normal mode)
      670 kSPS (impulse mode)
   14-bit resolution with no missing codes
   INL: ±0.3 LSB typical, ±1 LSB maximum (±61 ppm of FSR)
   SNR: 85 dB @ 2 kHz
   iCMOS® process technology
   5 V internal reference: typical drift 3 ppm/°C; TEMP output
   No pipeline delay (SAR architecture)
   Parallel (14- or 8-bit bus) and serial 5 V/3.3 V interface
   SPI-/QSPI™-/MICROWIRE™-/DSP-compatible
   Power dissipation
      235 mW @ 1 MSPS
      10 mW @ 1 kSPS
   48-lead LQFP and 48-lead LFCSP (7 mm × 7 mm)

APPLICATIONS
   Process controls
   Medical instruments
   High speed data acquisition
   Digital signal processing
   Instrumentation
   Spectrum analysis
   ATE