AD7952

14位， 1 MSPS ，差分可编程输入的PulSAR ADC 14-Bit, 1 MSPS, Differential, Programmable Input PulSAR ADC

Product Details

The 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**

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Process controls Medical instruments

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High speed data acquisition

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Digital signal processing

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Instrumentation

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Spectrum analysis

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ATE

### Features and Benefits

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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

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Pins or serial SPI®-compatible input ranges/mode selection

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Throughput

1 MSPS warp mode

800 kSPS normal mode

670 kSPS impulse mode

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14-bit resolution with no missing codes

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INL: ±0.3 LSB typical, ±1 LSB maximum ±61 ppm of FSR

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_SNR: 85 dB @ 2 kHz_

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_i_CMOS® process technology

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5 V internal reference: typical drift 3 ppm/°C; TEMP output

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No pipeline delay SAR architecture

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Parallel 14- or 8-bit bus and serial 5 V/3.3 V interface

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SPI-/QSPI™-/MICROWIRE™-/DSP-compatible

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Power dissipation

235 mW @ 1 MSPS

10 mW @ 1 kSPS