AD7651

PRODUCTION

16-Bit 100 kSPS PulSAR® Unipolar ADC with Reference

Analog Devices AD7651 Product Info

10 February 2026 5

Features

2.5 V Internal Reference:
Typical Drift 3 ppm/°C
Throughput: 100 kSPS
16-Bit Resolution
Analog Input Voltage Range: 0 V to 2.5 V
No Pipeline Delay
Parallel and Serial 5 V/3 V Interface
SPI^®/QSPI^™/MICROWIRE^™/DSP Compatible
Single 5 V Supply Operation

Power Dissipation:
15 mW Typ without REF, 25 µW
@ 100 SPS
25 mW Typ with REF
Power-Down Mode: 7 µW Max
Package:
48-Lead Quad Flat Pack (LQFP)
48-Lead Chip Scale Package (LFCSP)
Pin-to-Pin Compatible with PulSAR^™ ADCs

Part details & applications

The AD7651 is a 16-bit, 100 kSPS, charge redistribution SAR, analog-to-digital converter that operates from a single 5 V power supply. The part contains a high-speed 16-bit sampling ADC, an internal conversion clock, internal reference, error correction circuits, and both serial and parallel system interface ports.

It is fabricated using Analog Devices' high-performance, 0.6 micron CMOS process, with correspondingly low cost and is available in a 48-lead LQFP and a tiny 48-lead LFCSP with operation specified from -40°C to +85°C.

APPLICATIONS

Data acquisition
Instrumentation
Digital signal processing
Spectrum analysis
Medical instruments
Battery-powered systems
Process control

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