Analog Devices Inc. LTC6241HS8#PBF

Overview

LTC6241HS8#PBF from Analog Devices (formerly Linear Technology) is a dual, rail-to-rail output, low-noise CMOS operational amplifier optimized for high-impedance, precision signal conditioning in harsh thermal environments. It delivers 18MHz gain bandwidth, 10V/μs slew rate, 550nV_P-P 0.1Hz–10Hz noise, 125μV max input offset voltage, and operates across –40°C to 125°C on 2.8V to 6V single-supply or ±2.5V dual-supply - ideal for industrial sensor front-ends and medical instrumentation.

For engineers reviewing the LTC6241HS8#PBF datasheet, LTC6241HS8#PBF pinout, LTC6241HS8#PBF application, or LTC6241HS8#PBF equivalent, key selection criteria include guaranteed 1pA max input bias current at H-grade temperature, rail-to-rail output swing within 30mV of rails, channel-to-channel V_OS match ≤160μV, and SO-8 package compatibility with guard-ring PCB layouts.

Technical Context

The LTC6241HS8#PBF employs a complementary CMOS input stage enabling ultra-low input bias current (≤1pA max) and high input resistance (>10¹² Ω), critical for photodiode and piezoelectric transducer amplification. Its unity-gain-stable architecture supports wide-bandwidth closed-loop configurations without external compensation.

It features a Class AB output stage delivering rail-to-rail swing (≤30mV from rails at 5mA load) and robust common-mode rejection (≥78dB over full temperature range), with matched channel performance validated for differential signal processing in dual-amplifier topologies.

Key Specifications

Pinout & Package

Package: 8-lead plastic SO (SO-8), RoHS-compliant, lead-free finish, 150°C max junction temperature, θ_JA = 190°C/W.

Key Features

Applications

Equivalent & Alternatives

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

Compared with OPA2189IDR and ADA4625-2ACPZ-R7, the LTC6241HS8#PBF offers optimal balance of ultra-low input bias current, low 1/f noise, and 18MHz bandwidth in an industry-standard SO-8 package rated for extended temperature operation - making it preferred for high-impedance, wideband, thermally demanding sensor interfaces.

Availability

LTC6241HS8#PBF is available at Aetrix Electronics and suitable for industrial sensor front-ends, medical instrumentation, and automotive subsystems requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for LTC6241HS8#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 LTC6241 belongs to ADI's precision op amp product line, engineered for applications demanding ultra-low input bias current, low noise, and guaranteed performance across extreme temperatures - particularly in scientific instrumentation, aerospace, and industrial process control.

FAQ

What is the maximum input bias current specification for LTC6241HS8#PBF over its full operating temperature range?

The LTC6241HS8#PBF guarantees a maximum input bias current of 1pA over the full –40°C to 125°C operating temperature range, as specified in the H-grade electrical characteristics table. This value applies to both amplifier channels and is critical for preserving accuracy in high-impedance sensor circuits where bias current-induced errors dominate. The LTC6241HS8#PBF achieves this via a precision complementary CMOS input stage with tight process control.

Does LTC6241HS8#PBF support true rail-to-rail output swing, and what is the worst-case voltage drop at full load?

Yes, the LTC6241HS8#PBF provides true rail-to-rail output swing, delivering output voltages within 30mV of either supply rail under 5mA load conditions across –40°C to 125°C. At no load, the swing is within 11mV of the rails. This capability is confirmed in the "Output Voltage Swing High/Low" specifications and enables maximum signal dynamic range in low-voltage systems such as 3.3V data loggers and portable medical devices using the LTC6241HS8#PBF.

What is the guaranteed gain bandwidth product for LTC6241HS8#PBF at elevated temperature?

The LTC6241HS8#PBF guarantees a minimum gain bandwidth product of 12MHz over the full –40°C to 125°C operating temperature range, as documented in the H-grade electrical characteristics section. At 25°C, the typical value is 18MHz. This specification ensures predictable closed-loop bandwidth in thermally demanding environments like motor drive feedback loops or under-hood automotive sensors where the LTC6241HS8#PBF maintains stable frequency response.

Can LTC6241HS8#PBF operate from a single 3.3V supply, and what is its minimum supply voltage?

Yes, the LTC6241HS8#PBF is fully specified for single-supply operation from 3.3V and guarantees functionality down to a minimum total supply voltage of 2.8V, as stated in the Absolute Maximum Ratings and Electrical Characteristics tables. It maintains rail-to-rail output swing, 125μV max input offset, and 18MHz bandwidth at 3.3V - making the LTC6241HS8#PBF suitable for battery-powered IoT edge nodes and energy-harvesting sensor systems.

How does the channel-to-channel input offset voltage matching of LTC6241HS8#PBF benefit differential amplifier designs?

The LTC6241HS8#PBF guarantees a maximum channel-to-channel input offset voltage match of 160μV over –40°C to 125°C, enabling precise differential gain stages with minimal common-mode error. In instrumentation amplifier configurations using two LTC6241HS8#PBF channels, this matching directly reduces output offset drift and improves CMRR - critical for high-resolution weigh scales and bridge-based pressure sensors where the LTC6241HS8#PBF delivers consistent dual-channel performance without trimming.