AD7951 Datasheet – Programmable Input PulSAR ADC

Part Number : AD7951

Function : 14-Bit, 1 MSPS, Unipolar/Bipolar Programmable Input PulSAR ADC

Package : 48-lead LQFP and LFCSP (7 mm × 7 mm) Type

Manufacturers : Analog Devices

Pinouts :

AD7951 datasheet

Description :

The AD7951 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 AD7951 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 analog input on IN+ with respect to a ground sense, IN−. The AD7951 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.


1. Multiple pins/software programmable input ranges : 2.5 V, 10 V, ±5 V, ±10 V
2. Pins or serial SPI® compatible input ranges/mode selection
3. 14-bit resolution with no missing codes
4. INL: ±0.3 LSB typ, ±1 LSB max (±61 ppm of FSR) SNR: 85 dB @ 2 kHz
5. iCMOS® process technology
6. 5 V internal reference: typical drift 3 ppm/°C; TEMP output
7. No pipeline delay (SAR architecture)
8. Parallel (14- or 8-bit bus) and serial 5 V/3.3 V interface


1. Process control
2. Medical instruments
3. High speed data acquisition
4. Digital signal processing
5. Instrumentation
6. Spectrum analysis
7. ATE

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AD7951 Datasheet PDF Download

AD7951 pdf