EVAL-AD7903SDZ Simultaneous Sampling A/D Converters by Analog Devices

Simultaneous Sampling A/D Converters
Status: Production
Series: AD7903
RoHS: Compliant
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The AD7903 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 interface port. On the CNVx rising edge, the AD7903 samples the voltage difference between the INx+ and INx− pins. The voltages on these pins usually swing in opposite phases between 0 V and VREF. 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 AD7903 is available in a 20-lead QSOP package with operation specified from −40°C to +125°C.

Where to Buy

Prices starting from US$106.00

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Features

16-bit resolution with no missing codes
Throughput: 1 MSPS
Low power dissipation
7.0 mW at 1 MSPS (VDD1 and VDD2 only)
12.0 mW at 1 MSPS (total)
140 µW at 10 kSPS
INL: ±0.5 LSB typical, ±2.0 LSB maximum
True differential analog input range: ±VREF
0 V to VREF with VREF between 2.4 V to 5.1 V
Allows use of any input range
Easy to drive with the ADA4941-1
SINAD: 93.5 dB at 1 kHz
THD: −112 dB at 1 kHz
No pipeline delay
Single-supply 2.5 V operation with 1.8 V/2.5 V/3 V/5 V logic interface
Serial interface SPI/QSPI/MICROWIRE/DSP compatible
20-lead QSOP package
Wide operating temperature range: −40°C to +125°C

Frequently Asked Questions

Where can I find additional details, specifications and documents for a EVAL-AD7903SDZ?

Additional datasheets, footprints and schematics for EVAL-AD7903SDZ are listed on our Part Details page. You can also find images and similar parts to EVAL-AD7903SDZ on this page.

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What category does EVAL-AD7903SDZ fall under?

The EVAL-AD7903SDZ is listed under Simultaneous Sampling A/D Converters.

Can I view similar or alternative parts?

You can view similar parts to EVAL-AD7903SDZ when available in the Simultaneous Sampling A/D Converters range under the specifications section at the bottom of the details page.

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Is the EVAL-AD7903SDZ RoHS compliant?

Yes. This part has been flagged as RoHS Compliant by Analog Devices.

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