Analog Devices Inc. LT6013ACDD#PBF

Overview

LT6013ACDD#PBF from Analog Devices (formerly Linear Technology) is a single-channel, rail-to-rail output precision operational amplifier optimized for low-noise, micro-power sensor interface applications. It delivers 9.5nV/√Hz input voltage noise at 1kHz, ≤110µV max input offset voltage over –40°C to 85°C, 145µA supply current per amplifier, and stable operation at gain ≥5. It is widely used in thermocouple amplifiers and battery-powered precision instrumentation.

For engineers reviewing the LT6013ACDD#PBF datasheet, LT6013ACDD#PBF pinout, LT6013ACDD#PBF application, or LT6013ACDD#PBF equivalent, key selection criteria include guaranteed AV ≥5 stability, DFN-8 package thermal performance (θJA = 160°C/W), ±250pA max input bias current at 0°C–70°C, and 0.2V/µs slew rate with 1.4MHz GBW - all validated for industrial temperature range operation.

Technical Context

The LT6013ACDD#PBF employs a decompensated internal architecture requiring minimum closed-loop gain of 5 for stability, enabling lower noise and higher bandwidth than unity-gain-stable alternatives. Its input stage uses on-chip bias current cancellation, resulting in uncorrelated IB+ and IB– and making input resistor balancing counterproductive.

It features rail-to-rail output swing (within 40mV of rails at no load), operates from 2.7V single supply or ±18V dual supply, and maintains 120dB min open-loop voltage gain and 112dB min PSRR across frequency - critical for precision DC-coupled signal conditioning in noisy environments.

Key Specifications

Pinout & Package

LT6013ACDD#PBF is housed in an 8-lead 3mm × 3mm plastic DFN package (DD) with exposed metal pad connected to V–. Thermal resistance θJA = 160°C/W enables operation at full rated junction temperature (125°C) with minimal PCB copper area.

Key Features

Applications

Equivalent & Alternatives

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

Compared with LT6013ACS8#PBF, LT6013ACDD#PBF provides 21% lower thermal resistance and 44% smaller PCB area; versus LT6011IDC#TRPBF, it delivers 32% lower input voltage noise and 23% lower quiescent current - making it optimal for fixed-gain, space-constrained, battery-operated precision analog stages.

Availability

LT6013ACDD#PBF is available at Aetrix Electronics and suitable for thermocouple amplifiers, precision photodiode amplifiers, and battery-powered instrumentation requiring stable component supply, long-term lifecycle support, and traceable sourcing.

Supply support for LT6013ACDD#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 with rigorous qualification and long-term manufacturing commitment.

The LT6013 series belongs to Linear's low-noise, micro-power precision op amp product line, designed specifically for high-accuracy DC-coupled sensor signal conditioning in space- and energy-constrained industrial and portable equipment.

FAQ

What is the minimum stable gain for LT6013ACDD#PBF?

The LT6013ACDD#PBF is decompensated and guaranteed stable only at closed-loop gains of 5 or greater. Using it at unity gain or gain-of-2 risks oscillation due to insufficient phase margin. Stability is maintained up to 500pF capacitive load at AV = 5, and improves further at higher gains. Always verify loop stability with actual PCB parasitics in final design.

Does LT6013ACDD#PBF support single-supply operation?

Yes, LT6013ACDD#PBF operates from a single 2.7V supply up to 36V total supply (V+ to V–). Its rail-to-rail output swings within 40mV of both rails, and input common-mode range extends from V– + 0.7V to V+ – 1.2V - enabling direct interfacing with 3.3V or 5V microcontrollers and ADCs without level-shifting circuitry.

What is the maximum input differential voltage for LT6013ACDD#PBF?

The absolute maximum differential input voltage for LT6013ACDD#PBF is 10V, enforced by internal back-to-back diodes and 500Ω series resistors. Exceeding this risks damage or parametric shift. For applications with >10V expected differential inputs (e.g., fault detection), external series resistors must limit current to ≤10mA - for example, 1kΩ per input protects against 30V differential transients.

How does the DFN package of LT6013ACDD#PBF affect thermal performance?

The LT6013ACDD#PBF's 3mm × 3mm DFN package has θJA = 160°C/W (vs. 190°C/W for SO-8), reducing junction-to-ambient temperature rise by 30°C at identical power dissipation. The exposed V– pad enhances heat conduction to PCB ground plane; connecting it improves thermal performance by up to 25%, critical for sustained operation near 125°C junction limit.

Is LT6013ACDD#PBF pin-compatible with other LT6013 variants?

Yes, all LT6013 variants - including LT6013ACDD#PBF, LT6013ACS8#PBF, LT6013CDD#PBF, and LT6013IS8#PBF - share identical 8-pin functional pinouts and electrical behavior within grade specifications. The DFN (DD) and SO-8 (S8) packages are mechanically incompatible but electrically interchangeable in schematic design, requiring only footprint adaptation.