AD7902

PRODUCTION

Dual Pseudo Differential 16-Bit, 1 MSPS P ul SAR ADC 12.0 m W in QSOP

Analog Devices AD7902 Product Info

10 February 2026 7

Features

16-bit resolution with no missing codes
Throughput: 1 MSPS
Lowpower dissipation
7.0 mW at 1 MSPS (V_DD1 and V_DD2 only)
12.0 mW at 1 MSPS (total)
140 µW at 10 kSPS
INL: ±1.0 LSB typical, ±2.5 LSB maximum
Pseudodifferential analog input range
0 V to V_REF with V_REF between
2.4 V to 5.1 V
Allows use of any input range
Easy to drive with the ADA4841-1/ADA4841-2

SINAD: 91 dB at 1 kHz
THD: −105 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 port interface (SPI) QSPI/MICROWIRE/DSP compatible
20-lead QSOP package
Wide operating temperature range: −40°C to +125°C

Part details & applications

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 V_REF with respect to a ground sense, IN−. The externally applied reference voltage of the REFx pins (V_REF) 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.

APPLICATIONS

Battery-powered equipment
Communications
Automated test equipment (ATE)
Data acquisition
Medical instrumentation
Redundant measurement
Simultaneous sampling

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