Analog Devices Inc. LT6014AIDD#PBF

Overview

LT6014AIDD#PBF from Analog Devices (formerly Linear Technology) is a dual precision rail-to-rail output operational amplifier optimized for low-noise, micro-power sensor signal conditioning in battery-powered and low-voltage systems. It delivers 9.5nV/√Hz input voltage noise at 1kHz, ≤160µV max input offset voltage over –40°C to 85°C, 145µA per amplifier supply current, and stable operation at gain ≥5 - enabling high-accuracy thermocouple and photodiode amplification.

For engineers reviewing the LT6014AIDD#PBF datasheet, LT6014AIDD#PBF pinout, LT6014AIDD#PBF application, or LT6014AIDD#PBF equivalent, key selection criteria include its guaranteed A-grade offset drift (≤1.2µV/°C in DFN), 500pF capacitive load drive capability at AV ≥5, matched dual-channel performance (≤320µV offset match), and compatibility with 2.7V single-supply or ±18V split-supply operation.

Technical Context

The LT6014AIDD#PBF employs a decompensated internal architecture requiring minimum closed-loop gain of 5 for stability - unlike unity-gain stable op amps - enabling lower noise and higher bandwidth (1.4MHz GBW) within its 145µA per-amplifier quiescent current budget. Its input stage uses on-chip bias current cancellation, yielding ±250pA max input bias current (TA = 0°C to 70°C) while maintaining uncorrelated IB+ and IB– paths.

It features rail-to-rail output swing (within 40mV of rails at no load), 120dB min open-loop gain, and enhanced PSRR (≥112dB) and CMRR (≥107dB) versus frequency - critical for precision DC-coupled measurement front-ends where power supply ripple or common-mode interference must be rejected across operating temperature.

Key Specifications

Pinout & Package

LT6014AIDD#PBF is housed in an 8-lead 3mm × 3mm plastic DFN package (DD) with exposed pad connected to V–. The underside metal pad is optional for PCB connection and improves thermal performance (θJA = 160°C/W).

Key Features

Applications

Equivalent & Alternatives

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

Compared with LT6014CS8#PBF, LT6014AIDD#PBF offers tighter offset matching and superior thermal resistance in a smaller footprint; versus LT6011AIS8#PBF, it trades unity-gain stability for lower noise and lower power - making it optimal for fixed-gain, battery-sensitive precision analog front-ends.

Availability

LT6014AIDD#PBF is available at Aetrix Electronics and suitable for thermocouple amplifiers, precision photodiode interfaces, instrumentation amplifier cores, and battery-powered precision systems requiring stable component supply across extended temperature ranges.

Supply support for LT6014AIDD#PBF 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 acquired Linear Technology in 2017 and maintains its precision analog portfolio, renowned for low-noise, rail-to-rail, and micropower op amps used in test equipment, medical devices, and industrial sensing.

The LT6013/LT6014 product line was designed specifically for high-accuracy, low-power sensor interface applications where offset, drift, noise, and supply current must be simultaneously minimized - targeting portable instrumentation and harsh-environment measurement systems.

FAQ

What is the maximum allowable supply voltage for LT6014AIDD#PBF?

The LT6014AIDD#PBF supports a total supply voltage (V+ to V–) of up to 40V. It operates across a wide supply range: 2.7V single supply (V+ = 2.7V, V– = 0V) or ±18V split supply (V+ = +18V, V– = –18V). Operation outside these limits risks permanent damage per Absolute Maximum Ratings.

Can LT6014AIDD#PBF be used in unity-gain configurations?

No - the LT6014AIDD#PBF is intentionally decompensated for stability only at closed-loop gains ≥5. Using it in unity-gain or gain-of-2 configurations will cause oscillation. For unity-gain stable alternatives, consider the LT6011AIS8#PBF, which shares the same A-grade temperature range but has higher 14nV/√Hz noise.

What is the input common-mode voltage range for LT6014AIDD#PBF?

The LT6014AIDD#PBF input stage operates within V– + 1V to V+ – 1.2V. For example, on a 5V single supply (V+ = 5V, V– = 0V), valid input common-mode range is 1V to 3.8V. Exceeding this range causes gain collapse but no phase reversal - a safe failure mode for fault-tolerant designs.

How does LT6014AIDD#PBF handle capacitive loads?

The LT6014AIDD#PBF drives up to 500pF capacitively loaded at AV ≥5 without instability. At higher gains, capacitive load tolerance increases. For loads >500pF or gains <5, add a small series resistor (e.g., 10–50Ω) between output and load to isolate capacitance and preserve phase margin - verified in Figure 1 of the LT6013/LT6014 datasheet.

Is LT6014AIDD#PBF pin-compatible with other LT6014 variants?

Yes - all LT6014 variants (e.g., LT6014CS8#PBF, LT6014AIDD#PBF, LT6014IS8#PBF) share identical 8-pin SO-8 and 8-lead DFN (3mm × 3mm) pinouts. Pin functions (OUT A, –IN A, +IN A, V–, V+, OUT B, –IN B, +IN B) are consistent across packages and grades, enabling drop-in replacement when thermal and layout constraints permit.