Analog Devices Inc. LTC6078AHMS8#PBF

Overview

LTC6078AHMS8#PBF from Analog Devices (formerly Linear Technology) is a dual-channel, micropower precision CMOS operational amplifier with rail-to-rail input/output swing, 25µV max offset voltage at 25°C, 0.7µV/°C max offset drift, and 54µA per amplifier supply current at 3V - designed for high-impedance sensor signal conditioning in battery-powered instrumentation.

For engineers reviewing the LTC6078AHMS8#PBF datasheet, LTC6078AHMS8#PBF pinout, LTC6078AHMS8#PBF application, or LTC6078AHMS8#PBF equivalent, key selection criteria include guaranteed performance over –40°C to 125°C, 95dB min CMRR, 100dB min PSRR, 16nV/√Hz input noise density, and MS8 package compatibility with space-constrained PCB layouts.

Technical Context

The LTC6078AHMS8#PBF integrates two independent precision amplifiers sharing a common 2.7V–5.5V supply. Its input stage combines PMOS and NMOS differential pairs to achieve true rail-to-rail common-mode range (V– to V+), while internal trimming ensures ≤25µV offset at 25°C and ≤0.7µV/°C drift across the full operating temperature range.

Each amplifier features active shutdown control (not implemented in MS8 package), 115dB large-signal voltage gain, 420kHz gain-bandwidth product, and 0.05V/µs slew rate - optimized for low-frequency, high-accuracy DC-coupled applications where power efficiency and thermal stability are critical.

Key Specifications

Pinout & Package

Package: 8-lead plastic MSOP (MS8), 3.00mm × 3.00mm body, 0.65mm pitch, exposed pad connected to V–.

Key Features

Applications

Equivalent & Alternatives

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

Compared with LTC2051HS8#PBF and LT6011IMS8#PBF, the LTC6078AHMS8#PBF uniquely balances sub-25µV offset, sub-1pA bias, and 54µA supply current - making it optimal for long-life, high-impedance DC measurement systems where thermal drift and power co-constrain design.

Availability

LTC6078AHMS8#PBF is available at Aetrix Electronics and suitable for portable instrumentation, industrial sensor nodes, and medical diagnostics equipment requiring stable component supply across extended temperature ranges.

Supply support for LTC6078AHMS8#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 LTC6078 series belongs to Linear's micropower precision op amp family, engineered specifically for high-accuracy, low-power signal conditioning in battery-operated and thermally demanding environments.

FAQ

What is the maximum operating temperature range for the LTC6078AHMS8#PBF?

The LTC6078AHMS8#PBF is rated for continuous operation from –40°C to 125°C, with guaranteed specifications over this full range. This H-grade variant uses the MS8 package, which has a 150°C maximum junction temperature rating - enabling reliable deployment in automotive under-hood or industrial control cabinet applications where ambient temperatures exceed 85°C.

Does the LTC6078AHMS8#PBF include shutdown functionality?

No, the LTC6078AHMS8#PBF does not implement shutdown pins. Shutdown capability is only available in the 10-lead DFN (DD) package variants (e.g., LTC6078AHDD#PBF), which feature dedicated SHDN_A and SHDN_B pins. The MS8 package used by LTC6078AHMS8#PBF omits these pins entirely - all amplifiers remain active whenever powered.

What is the typical input bias current of the LTC6078AHMS8#PBF at 125°C?

The LTC6078AHMS8#PBF guarantees ≤50pA input bias current at temperatures ≤85°C, and ≤350pA at 125°C (per Electrical Characteristics table, H-suffix column). At 25°C, typical input bias is 0.2pA - meaning the device maintains femtoamp-level performance across most of its operating range, critical for guarding high-impedance sensor interfaces.

Can the LTC6078AHMS8#PBF drive capacitive loads, and if so, how much?

Yes, the LTC6078AHMS8#PBF can drive up to 200pF in unity-gain configuration without instability. For higher gains, capacitive load tolerance increases. Adding a small series resistor (e.g., 10–50Ω) between the output and load further improves phase margin - a technique validated in the datasheet's "Capacitive Load" section and demonstrated in typical application circuits like the 60Hz notch filter (TA15).

How does the LTC6078AHMS8#PBF achieve rail-to-rail input operation?

The LTC6078AHMS8#PBF achieves rail-to-rail input using a complementary input stage: parallel PMOS and NMOS differential pairs that activate based on common-mode voltage. When VCM is near V+, the NMOS pair operates; near V–, the PMOS pair takes over. This seamless transition extends the usable input range from V– to V+, eliminating dead zones and enabling accurate signal capture in single-supply systems down to 2.7V.