AD7902BRQZ
ActiveDUAL PSEUDO DIFFERENTIAL 16-BIT, 1 MSPS PULSAR ADC 12.0MW IN QSOP
AD7902BRQZ
ActiveDUAL PSEUDO DIFFERENTIAL 16-BIT, 1 MSPS PULSAR ADC 12.0MW IN QSOP
Description
General part information
AD7902 Series
The AD7902 is a dual 16-bit, successive approximation, analog-to-digital converter (ADC) that operates from a single power supply, VDDx, per ADC. It contains two low power, high speed, 16-bit sampling ADCs and a versatile serial port interface (SPI). On the CNVx rising edge, the AD7902 samples an analog input, IN+ in the range of 0 V to VREFwith respect to a ground sense, IN−. The externally applied reference voltage of the REFx pins (VREF) can be set independently from the supply voltage pins, VDDx. The power of the device scales linearly with throughput.Using the SDIx inputs, the SPI-compatible serial interface can also daisy-chain multiple ADCs on a single 3-wire bus and provide an optional busy indicator. It is compatible with 1.8 V, 2.5 V, 3 V, or 5 V logic, using the separate VIOx supplies.The AD7902 is available in a 20-lead QSOP package with operation specified from −40°C to +125°C.APPLICATIONSBattery-powered equipmentCommunicationsAutomated test equipment (ATE)Data acquisitionMedical instrumentationRedundant measurementSimultaneous sampling
Technical Specifications
Parameters and characteristics for this part
| Specification | AD7902BRQZ |
|---|---|
| Architecture | SAR |
| Configuration | S/H-ADC |
| Data Interface | DSP, SPI |
| Features | Simultaneous Sampling |
| Input Type | Pseudo-Differential |
| Mounting Type | Surface Mount |
| Number of A/D Converters | 2 count |
| Number of Bits | 16 bits |
| Number of Inputs | 2 |
| Operating Temperature (Max) | 125 °C |
| Operating Temperature (Min) | -40 °C |
| Package Length | 0.154 in |
| Package Name | 20-SSOP, 20-QSOP |
| Package Width | 3.9 mm |
| Ratio - ADC | 1 |
| Ratio - S/H | 1 |
| Reference Type | External |
| Sampling Rate (Per Second) | 1 MHz |
| Voltage - Supply, Analog (Max) | 2.625 V |
| Voltage - Supply, Analog (Min) | 2.375 V |
| Voltage - Supply, Digital (Max) | 2.625 V |
| Voltage - Supply, Digital (Min) | 2.375 V |
Pricing
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