14-Bit, 1 MSPS, Differential, Programmable Input PulSAR ADC

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.

APPLICATIONS

* Process controls Medical instruments

* High speed data acquisition

* Digital signal processing

* Instrumentation

* Spectrum analysis

* ATE

* Multiple pins/software-programmable input ranges

+5 V (10 VP-P), +10 V (20 VP-P),

±5 V (20 VP-P), ±10 V (40 VP-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)