AD1674 12-Bit, 100 kSPS ADC by Analog Devices | A/D Converter IC

The AD1674 is a complete, high-performance 12-bit analog-to-digital converter (ADC) designed by Analog Devices. It integrates a sample-and-hold amplifier (SHA), 10 V reference, clock, and three-state output buffers for seamless microprocessor interfacing.

Pin-compatible with the industry-standard AD574A and AD674A, the AD1674 delivers faster conversion rates and an integrated sampling function. Its wide input bandwidth SHA ensures 12-bit accuracy across the full Nyquist bandwidth, making it equally suitable for signal processing and precision DC measurement applications.

Fabricated using Analog Devices’ BiMOS II process, the AD1674 combines high-performance bipolar analog circuitry with digital CMOS logic for reliable mixed-signal performance.

Key Specifications

• Manufacturer: Analog Devices

• Model: AD1674

• Resolution: 12-bit

• Sampling Rate: 100 kSPS

• Integrated Features:

  • Onboard sample-and-hold amplifier (SHA)

  • 10 V precision reference

  • Internal clock

  • 3-state output buffers for MPU interface

• Package Options:

  • 28-lead plastic DIP, SOIC (J, K grades)

  • 28-lead hermetic ceramic DIP, SOIC (A, B grades)

  • 28-lead hermetic ceramic DIP (T grade)

• Temperature Grades:

  • J, K: 0°C to +70°C

  • A, B: –40°C to +85°C

  • T: –55°C to +125°C

Performance Features

• Pin-compatible with AD574A & AD674A

• Wide input bandwidth supporting Nyquist operation

• Fully specified AC & DC parameters:

  • S/(N+D) ratio

  • THD & IMD

  • Offset & full-scale error

• High-speed BiMOS II process design for robust analog + digital integration

Applications

• Digital signal processing (DSP) front-ends

• Precision measurement instrumentation

• Industrial and medical data acquisition systems

• Control systems requiring high accuracy A/D conversion