AD7942BRMZ
Active14-BIT, 250 KSPS PULSAR®, PSEUDO DIFFERENTIAL ADC IN MSOP/LFCSP
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AD7942BRMZ
Active14-BIT, 250 KSPS PULSAR®, PSEUDO DIFFERENTIAL ADC IN MSOP/LFCSP
Technical Specifications
Parameters and characteristics for this part
| Specification | AD7942BRMZ |
|---|---|
| Architecture | SAR |
| Configuration | S/H-ADC |
| Data Interface | DSP, SPI |
| Input Type | Pseudo-Differential |
| Mounting Type | Surface Mount |
| Number of A/D Converters | 1 |
| Number of Bits | 14 |
| Number of Inputs | 1 |
| Operating Temperature [Max] | 85 °C |
| Operating Temperature [Min] | -40 °C |
| Package / Case | 10-MSOP, 10-TFSOP |
| Package / Case [x] | 3 mm |
| Package / Case [x] | 0.118 in |
| Ratio - S/H:ADC | 1:1 |
| Reference Type | External |
| Sampling Rate (Per Second) | 250 k |
| Supplier Device Package | 10-MSOP |
| Voltage - Supply, Analog [Max] | 5.5 V |
| Voltage - Supply, Analog [Min] | 2.3 V |
| Voltage - Supply, Digital [Max] | 5.5 V |
| Voltage - Supply, Digital [Min] | 2.3 V |
Pricing
Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly
| Distributor | Package | Quantity | $ | |
|---|---|---|---|---|
| Digikey | Tube | 1 | $ 18.85 | |
| 10 | $ 13.65 | |||
| 25 | $ 12.31 | |||
| 50 | $ 10.21 | |||
| 100 | $ 10.82 | |||
| 250 | $ 10.10 | |||
| 500 | $ 9.71 | |||
Description
General part information
AD7942 Series
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 VREFwith 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.APPLICATIONSBattery-powered equipmentData acquisitionInstrumentationMedical instrumentsProcess controls
Documents
Technical documentation and resources
