Analog Devices Inc. AD8672TRZ-EP

Overview

AD8672TRZ-EP from Analog Devices is a dual, precision rail-to-rail output operational amplifier optimized for high-stability, low-noise signal conditioning in harsh environments. It delivers 2.8 nV/√Hz voltage noise density, 75 μV max offset voltage, 10 MHz gain bandwidth, and operates across −55°C to +125°C with ±5 V to ±15 V dual supplies - used in GPS filter networks and aerospace instrumentation.

For engineers reviewing the AD8672TRZ-EP datasheet, AD8672TRZ-EP pinout, AD8672TRZ-EP application, or AD8672TRZ-EP equivalent, key selection criteria include extended temperature performance, ultralow noise in PLL loop filters, input bias current stability over temperature, and SOIC_N package compatibility with legacy analog signal chains.

Technical Context

The AD8672TRZ-EP implements a precision bipolar input stage with 3.5 GΩ common-mode input resistance and 15 MΩ differential input resistance, enabling high-impedance sensor interfacing without significant loading. Its unity-gain stable architecture supports capacitive loads up to 1000 pF while maintaining phase margin >45°.

Designed for defense/aerospace use per AQEC standards, it features controlled manufacturing baseline, single-fab/single-test-site traceability, and enhanced product change notification - critical for long-lifecycle embedded systems requiring qualification data on request.

Key Specifications

Pinout & Package

AD8672TRZ-EP is housed in an 8-lead SOIC narrow (R-8) package per JEDEC MS-012-AA, with 1.27 mm lead pitch and 5.00 mm × 4.00 mm body dimensions. Thermal resistance θ_JA = 120°C/W on 4-layer board.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar precision op amp applications.

Compared with OP27GSY and LT1012ACN8#PBF, AD8672TRZ-EP uniquely balances ultralow noise (2.8 nV/√Hz), extended temperature operation (−55°C to +125°C), and AQEC qualification - making it irreplaceable in GPS timing modules and flight-critical sensor signal chains where both noise floor and lifecycle assurance are mandatory.

Availability

AD8672TRZ-EP is available at Aetrix Electronics and suitable for aerospace avionics, defense-grade GPS receivers, and medical diagnostic equipment requiring stable component supply across extended temperature and long production lifecycles.

Supply support for AD8672TRZ-EP 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 leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving precision instrumentation, communications, and industrial markets since 1965.

The AD8672-EP product line targets defense, aerospace, and high-reliability industrial applications requiring extended temperature operation, controlled manufacturing baselines, and AQEC-compliant qualification - delivering precision amplification where standard commercial parts fail.

FAQ

What is the maximum operating temperature range for the AD8672TRZ-EP?

The AD8672TRZ-EP is specified for continuous operation from −55°C to +125°C, validated per AQEC standards for defense and aerospace applications. This extended range is confirmed in Table 3 (Absolute Maximum Ratings) and General Description section of the Rev. 0 datasheet, with thermal performance characterized across the full span in Figures 2–12. The AD8672TRZ-EP maintains all key specifications - including offset voltage, noise, and gain bandwidth - within this range.

Does the AD8672TRZ-EP support single-supply operation?

The AD8672TRZ-EP is designed for dual-supply operation (±5 V to ±15 V) and does not support true single-supply operation. Its input voltage range is specified as VS− to VS+, and its output swing is rail-to-rail but referenced to dual rails. While it can operate with asymmetric supplies (e.g., +15 V and −5 V), it lacks internal level-shifting circuitry for ground-referenced inputs or outputs - so AD8672TRZ-EP requires both positive and negative supplies for specified performance.

Is the AD8672TRZ-EP pin-compatible with the commercial AD8672ARZ?

Yes, the AD8672TRZ-EP is pin-compatible with the commercial AD8672ARZ, sharing identical 8-lead SOIC_N (R-8) package footprint and pinout (Figure 1). Both devices use the same terminal assignments: OUT A, –IN A, +IN A, V–, +IN B, –IN B, OUT B, V+. However, AD8672TRZ-EP adds AQEC qualification, extended temperature validation, and controlled manufacturing - with no electrical or mechanical changes to the pin layout.

What is the typical supply current consumption of the AD8672TRZ-EP per amplifier?

The AD8672TRZ-EP draws 3 mA typical supply current per amplifier at 25°C with ±5 V supplies (Table 1), rising to 3.5 mA maximum under those conditions. At extended temperature (−55°C to +125°C), supply current increases to 4.2 mA maximum per amplifier (Table 1). Total device current is therefore ≤8.4 mA across both amplifiers under worst-case thermal and supply conditions - verified in Figure 2 (Supply Current vs. Temperature).

Can the AD8672TRZ-EP drive capacitive loads up to 1000 pF without instability?

Yes, the AD8672TRZ-EP is explicitly characterized for stable operation with capacitive loads exceeding 1000 pF, as stated in the General Description: "Outputs are stable with capacitive loads of over 1000 pF." This is enabled by internal compensation and verified across temperature and supply conditions. No external isolation resistor is required, simplifying ADC driver or cable interface designs where AD8672TRZ-EP serves as a low-noise buffer.