Analog Devices Inc. LT6011CDD#PBF

Overview

LT6011CDD#PBF from Analog Devices (formerly Linear Technology) is a dual precision rail-to-rail output operational amplifier optimized for low-noise, low-power, high-accuracy signal conditioning. It delivers 14nV/√Hz input voltage noise, <60µV max input offset voltage (0°C to 70°C), and 135µA supply current per amplifier on 5V supply, operating from 2.7V to 36V. It is widely used in thermocouple amplifiers and battery-powered precision systems where output swing within 40mV of rails is critical.

For engineers reviewing the LT6011CDD#PBF datasheet, LT6011CDD#PBF pinout, LT6011CDD#PBF application, or LT6011CDD#PBF equivalent, key selection criteria include guaranteed 0°C to 70°C performance, 3mm × 3mm DFN package with exposed V– pad, input bias current ≤300pA, rail-to-rail output swing, and compatibility with single-supply low-voltage sensor front-ends requiring sub-1µV/°C drift.

Technical Context

The LT6011CDD#PBF integrates a precision bipolar input stage with on-chip input offset trimming and bias current cancellation circuitry, enabling stable DC accuracy across temperature. Its rail-to-rail output stage uses complementary common-emitter followers to achieve 40mV saturation voltage at 1mA load while maintaining 120dB minimum open-loop gain at ±15V supply.

It operates over 2.7V to 36V total supply range with no phase reversal beyond input common-mode limits (V– +1V to V+ –1.2V), and features internal 500Ω series input resistors plus back-to-back diodes for ±10V differential input protection-critical for industrial sensor interfaces subject to transient overvoltage.

Key Specifications

Pinout & Package

LT6011CDD#PBF is housed in an 8-lead 3mm × 3mm plastic DFN package with underside metal pad connected to V–. The exposed thermal pad improves power dissipation and must be soldered to PCB ground plane for optimal thermal performance and noise immunity.

Key Features

Applications

Equivalent & Alternatives

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

Compared with OP2177ARZ-REEL7 and MCP6V81-E/SN, the LT6011CDD#PBF offers the best balance of ultra-low power (135µA), low broadband noise (14nV/√Hz), and robust rail-to-rail output swing - making it uniquely suited for portable, single-supply, high-fidelity sensor interfaces where thermal and supply constraints prohibit zero-drift or high-current alternatives.

Availability

LT6011CDD#PBF is available at Aetrix Electronics and suitable for thermocouple amplifiers, precision photo diode amplifiers, instrumentation amplifiers, battery-powered precision systems, and low-voltage precision systems requiring stable component supply across extended production cycles.

Supply support for LT6011CDD#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, Inc. (ADI) is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, formed through the acquisition of Linear Technology in 2017.

The LT6011CDD#PBF belongs to ADI's legacy Linear Technology precision op amp product line, engineered specifically for high-accuracy, low-power industrial and instrumentation applications where rail-to-rail output, low noise, and guaranteed temperature performance are mandatory.

FAQ

What is the maximum operating temperature range for the LT6011CDD#PBF?

The LT6011CDD#PBF is specified and guaranteed over 0°C to 70°C. While characterized for functionality from –40°C to 85°C, only the I-grade (e.g., LT6011IDD#PBF) is fully tested and warranted across that extended range. For designs requiring full industrial temperature coverage, the LT6011CDD#PBF should be validated per application conditions.

Does the LT6011CDD#PBF support rail-to-rail input operation?

No, the LT6011CDD#PBF does not support rail-to-rail input operation. Its input common-mode range is limited to V– + 1V to V+ – 1.2V. However, its rail-to-rail output swing remains fully functional, making it ideal for non-inverting or inverting configurations where inputs remain within this valid range - such as buffered voltage references or gain stages with proper DC biasing.

How is the exposed thermal pad on the LT6011CDD#PBF package intended to be connected?

The underside metal pad on the LT6011CDD#PBF DFN package is internally connected to the V– pin. It must be soldered to a PCB copper pour tied to the system ground or negative supply plane. This connection provides critical thermal conduction and reduces thermal resistance (θJA = 43°C/W), preventing junction overheating during sustained output loading or high ambient temperatures.

Can the LT6011CDD#PBF drive capacitive loads, and if so, up to what value?

Yes, the LT6011CDD#PBF can drive capacitive loads up to 500pF in unity-gain configuration. Stability improves with higher closed-loop gains. For loads exceeding 500pF, adding a small series resistor (e.g., 10Ω–50Ω) between the output and the capacitor restores phase margin and prevents peaking or oscillation - a common requirement when driving ADC input filters or long PCB traces.

What is the typical input bias current mismatch (∆IB) between the two amplifiers in the LT6011CDD#PBF?

The typical input bias current mismatch (∆IB) for the LT6011CDD#PBF is ≤600pA over 0°C to 70°C, as specified in the Electrical Characteristics table for the C-grade DFN variant. This tight matching ensures consistent common-mode rejection in dual-amplifier configurations such as instrumentation amplifiers or differential receivers, minimizing gain error due to unequal source impedance effects.