Analog Devices Inc. LTC6084HMS8#PBF

Overview

LTC6084HMS8#PBF from Analog Devices (formerly Linear Technology) is a dual, rail-to-rail input/output, unity-gain stable CMOS operational amplifier optimized for low-power, precision signal conditioning. It delivers 1.5MHz gain bandwidth, 0.5V/μs slew rate, 750μV max offset voltage, 1pA typical input bias current at 25°C, and operates from 2.5V to 5.5V supply across –40°C to 125°C - making it suitable for portable medical sensors and battery-powered data acquisition systems.

For engineers reviewing the LTC6084HMS8#PBF datasheet, LTC6084HMS8#PBF pinout, LTC6084HMS8#PBF application, or LTC6084HMS8#PBF equivalent, key selection criteria include guaranteed high-temperature performance (–40°C to 125°C), ultra-low input bias current stability over temperature, rail-to-rail output swing within 5mV of rails, shutdown mode with 1.1μA per amplifier, and MS8 package compatibility with space-constrained PCB layouts.

Technical Context

The LTC6084HMS8#PBF employs complementary PMOS/NMOS input stages to achieve rail-to-rail common-mode input range (V– to V+), with seamless transition between transistor pairs near 0.9V–1.3V below V+. Its class AB output stage enables 7.7mA short-circuit current while maintaining 5mV rail saturation under no-load conditions.

Internal shutdown logic is active-low on dedicated pins in DFN variants, but the LTC6084HMS8#PBF (MSOP-8) lacks SHDN pins - operation is always enabled. The device is unity-gain stable with capacitive load drive capability up to 300pF at AV = 1, and exhibits 45° phase margin into 10kΩ//150pF.

Key Specifications

Pinout & Package

Package: 8-Lead Plastic MSOP (MS8), 3.0mm × 3.0mm body, 0.65mm pitch, exposed pad connected to V– (not electrically isolated).

Key Features

Applications

Equivalent & Alternatives

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

Compared with LTC6084CMS8#PBF, the LTC6084HMS8#PBF guarantees operation to 125°C and relaxes VOS spec for robustness in harsh environments; versus LTC6082HMS8#PBF, it trades 40μA lower supply current for higher initial offset - optimizing for battery life over microvolt-level calibration.

Availability

LTC6084HMS8#PBF is available at Aetrix Electronics and suitable for portable medical sensors, industrial data acquisition modules, and battery-powered test equipment requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for LTC6084HMS8#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 high-performance op-amps, references, and signal conditioning ICs used in demanding industrial and aerospace applications.

The LTC6084HMS8#PBF belongs to Linear's rail-to-rail CMOS op-amp family designed specifically for low-power, high-accuracy sensor interfacing where input bias current, offset stability, and supply voltage flexibility are critical.

FAQ

What is the maximum operating temperature for the LTC6084HMS8#PBF?

The LTC6084HMS8#PBF is specified and guaranteed to operate from –40°C to 125°C. This H-grade qualification includes full electrical testing across the entire range, enabling deployment in under-hood automotive, industrial motor drives, and downhole oilfield equipment where ambient temperatures exceed 100°C.

Does the LTC6084HMS8#PBF have shutdown functionality?

No, the LTC6084HMS8#PBF in the 8-lead MSOP package does not include shutdown pins. Shutdown capability (SHDNA/SHDNB) is only available on the 10-lead DFN variant (LTC6084HDD#PBF). The LTC6084HMS8#PBF operates continuously when powered; design must accommodate its 110μA per amplifier quiescent current in low-power states.

What is the input common-mode voltage range of the LTC6084HMS8#PBF?

The LTC6084HMS8#PBF features true rail-to-rail input operation, with an input common-mode voltage range extending from V– to V+. This is achieved via complementary PMOS/NMOS input pairs that seamlessly transition near 0.9V–1.3V below V+, allowing direct interfacing with sensors referenced to either supply rail without external level shifting.

Can the LTC6084HMS8#PBF drive capacitive loads?

Yes, the LTC6084HMS8#PBF is unity-gain stable and can directly drive up to 300pF capacitive load at AV = 1. Performance curves show <10% overshoot with 300pF; for larger loads or higher gains, adding a small series resistor (e.g., 10Ω–50Ω) between output and capacitance improves stability without degrading bandwidth significantly.

How does the LTC6084HMS8#PBF compare to the LTC6082HMS8#PBF in precision applications?

The LTC6084HMS8#PBF offers lower supply current (110μA vs 170μA) and higher max offset (750μV vs 70μV), while sharing the same 1.5MHz GBW and 1pA input bias. Use LTC6084HMS8#PBF when battery life or thermal dissipation dominates; choose LTC6082HMS8#PBF when microvolt-level DC accuracy and low drift (0.8μV/°C) are mandatory for calibrated instrumentation.