AD7942 - ADI

The pictures are for reference only, and the specific specifications can be found in the product manual.

Part No

AD7942
Manufacturer

ADI
ChipWorker Part#

CW622308906
Description

14Bit, 250KSPS PulSAR®, Pseudo Differential ADC in MSOP/LFCSP
Documentation

Datasheet

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AD7942 Specifications

Attribute	Attribute Value

Part Number	AD7942
Manufacturer	ADI
ChipWorker Part#	CW622308906
Documentation	Datasheet
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Product Lifecycle Status	Active

Product Description

Product Details
The AD7942 is a 14-bit, charge redistribution, successive approximation PulSAR® ADC that operates from a single power supply, VDD, between 2.3 V to 5.5 V. It contains a low power, high speed, 14-bit sampling ADC with no missing codes, an internal conversion clock, and a versatile serial interface port. The part also contains a low noise, wide bandwidth, short aperture delay track-and-hold circuit. On the CNV rising edge, it samples an analog input, IN+, between 0 V to VREF with respect to a ground sense, IN−. The reference voltage, VREF, is applied externally and is set up to be the supply voltage. Its power scales linearly with the throughput.
The SPI-compatible serial interface also features the ability, using the SDI input, to daisy-chain several ADCs on a single 3-wire bus and provides an optional busy indicator. It is compatible with 1.8 V, 2.5 V, 3 V, or 5 V logic using a separate supply (VIO).
The AD7942 is housed in a 10-lead MSOP or a 10-lead LFCSP package yet fits in the same size footprint as the 8-lead MSOP or SOT-23. Operation for the AD7942 is specified from −40°C to +85°C.
**Applications**
Battery-powered equipment
Data acquisition
Instrumentation
Medical instruments
Process controls
### Features and Benefits
14-bit resolution with no missing codes
Throughput: 250 kSPS
INL: ±0.4 LSB typical, ±1 LSB maximum (±0.0061% of FSR)
SINAD: 85 dB @ 20 kHz
THD: −100 dB @ 20 kHz
Pseudo differential analog input range
0 V to VREF with VREF up to VDD
No pipeline delay
See Data Sheet for Additional Information

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