Analog Devices Inc. AD7672BQ10

Overview

AD7672BQ10 from Analog Devices is a 16-bit, 100 kSPS successive approximation register (SAR) analog-to-digital converter (ADC) in a 28-lead CERDIP package, featuring ±0.5 LSB integral nonlinearity, 86 dB SNR, and on-chip reference buffer, used in precision data acquisition for industrial process control systems.

For engineers reviewing the AD7672BQ10 datasheet, AD7672BQ10 pinout, AD7672BQ10 application, or AD7672BQ10 equivalent, key selection factors include sampling rate, INL performance, reference buffer integration, single-supply operation, and CERDIP packaging for high-reliability environments.

Technical Context

The AD7672BQ10 implements a SAR architecture with internal clock generation and supports unipolar/bipolar input ranges via external configuration. It uses a 5 V analog supply and 3 V to 5 V digital supply, with conversion initiated by a CNVST pulse and data read via parallel 16-bit bus.

It includes an internal 2.5 V reference with ±10 ppm/°C drift and programmable reference output buffer gain (1× or 2×), enabling direct interface to transducer signal chains without external amplification or reference conditioning.

Key Specifications

Pinout & Package

AD7672BQ10 is housed in a hermetically sealed 28-lead CERDIP (ceramic dual in-line package) with 0.6-inch body width, rated for –40°C to +85°C operation and suitable for military and aerospace applications requiring long-term reliability.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar precision SAR ADC applications.

Compared with AD7672BQ10, AD7671BQ increases design complexity through external reference buffering, while ADS8588SIPM trades parallel simplicity for SPI integration and reduced footprint-neither offers drop-in replacement capability due to interface and packaging differences.

Availability

AD7672BQ10 is available at Aetrix Electronics and suitable for precision instrumentation, aerospace data recording, and industrial calibration equipment requiring stable component supply and long-lifecycle support.

Supply support for AD7672BQ10 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Analog Devices is a global semiconductor company specializing in high-performance analog, mixed-signal, and digital signal processing technologies.

The AD767x family was designed for high-accuracy, medium-speed data acquisition in environments demanding low drift, hermetic packaging, and minimal external component dependency.

FAQ

What is the maximum sampling rate supported by the AD7672BQ10?

The AD7672BQ10 supports a maximum sampling rate of 100 kSPS under specified operating conditions. This rate is guaranteed across its full temperature range (–40°C to +85°C) and with proper power supply decoupling. The conversion time is fixed at 10 µs per sample, and the CNVST pulse width must meet minimum timing requirements to ensure reliable capture. AD7672BQ10 maintains this rate without performance degradation in typical industrial configurations.

Does the AD7672BQ10 include an internal voltage reference?

Yes, the AD7672BQ10 integrates a 2.5 V bandgap voltage reference with ±10 ppm/°C temperature coefficient and on-chip buffer amplifier. This reference can be used directly as the ADC's conversion reference or configured as a buffered output for external circuitry. The AD7672BQ10 does not require an external reference for basic operation, reducing system-level component count and layout sensitivity.

What package type is used for the AD7672BQ10?

The AD7672BQ10 is packaged in a 28-lead CERDIP (ceramic dual in-line package) with 0.6-inch body width and flat leads. This hermetically sealed package provides high reliability, low moisture ingress, and extended operational life in harsh environments. The AD7672BQ10's CERDIP construction meets MIL-STD-883 requirements for screening and is commonly used in aerospace and defense applications where long-term stability is critical.

Can the AD7672BQ10 operate with a 3.3 V digital supply?

Yes, the AD7672BQ10 supports a digital supply voltage (DVDD) ranging from 3 V to 5 V, making it compatible with 3.3 V logic families. Its parallel data bus (DB0–DB15) and control signals (RD, CNVST) are fully functional at 3.3 V, provided AVDD remains at 5 V. This dual-supply flexibility allows the AD7672BQ10 to interface directly with modern low-voltage microcontrollers without level-shifting circuitry.

Is the AD7672BQ10 pin-compatible with other devices in the AD767x family?

No, the AD7672BQ10 is not pin-compatible with other AD767x variants such as AD7671BQ or AD7673BQ. Differences in reference pin configuration, power supply pin assignments, and internal buffer routing prevent direct substitution. Each AD767x variant has a unique pinout optimized for its specific feature set, and the AD7672BQ10's CERDIP layout reflects its integrated reference buffer implementation.