Analog Devices Inc. LTC6244HVIMS8#TRPBF

Overview

LTC6244HVIMS8#TRPBF from Analog Devices (acquired Linear Technology) is a dual, high-speed, rail-to-rail output CMOS operational amplifier optimized for low-noise, high-precision signal conditioning in ±5V supply systems. It delivers 50MHz gain bandwidth, 40V/μs slew rate, 1.5μV_P-P 0.1Hz–10Hz noise, 1pA input bias current, and 100μV max input offset voltage - enabling photodiode amplification, active filtering, and medical sensor front-ends where dynamic range and DC accuracy are critical.

For engineers reviewing the LTC6244HVIMS8#TRPBF datasheet, LTC6244HVIMS8#TRPBF pinout, LTC6244HVIMS8#TRPBF application, or LTC6244HVIMS8#TRPBF equivalent, key selection criteria include its HV-rated ±5V operation, MS8 package thermal performance (θ_JA = 250°C/W), guaranteed 2.5μV/°C offset drift, and compatibility with high-impedance transducers requiring sub-picoampere bias and rail-to-rail swing within 35mV of supplies.

Technical Context

The LTC6244HVIMS8#TRPBF employs a folded-cascode input stage with laser-trimmed MOSFETs to achieve ultra-low input bias current and low 1/f noise. Its differential drive generator enables true rail-to-rail output swing while maintaining stability at unity gain across its full 50MHz bandwidth.

Designed for ±5V operation (total supply up to 12V), it extends input common mode to V– and supports high-impedance sources via 2.1pF input capacitance and >1TΩ input resistance. The HV variant guarantees specified performance over –40°C to +85°C with matched channel characteristics including <325μV V_OS match and >78dB CMRR over –5V to +3.5V V_CM.

Key Specifications

Pinout & Package

Package: 8-Lead Plastic MSOP (MS8), 3mm × 3mm footprint, exposed pad optional connection to V–, θ_JA = 250°C/W.

Key Features

Applications

Equivalent & Alternatives

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

Compared with ADA4898-2ARMZ and OPA2189IDR, the LTC6244HVIMS8#TRPBF uniquely balances 50MHz bandwidth, 1.5μV_P-P low-frequency noise, and ±5V operation - making it optimal for photodiode amplifiers and medical front-ends needing both speed and precision.

Availability

LTC6244HVIMS8#TRPBF is available at Aetrix Electronics and suitable for photodiode amplification, active filter design, and medical instrumentation requiring stable component supply across industrial temperature ranges.

Supply support for LTC6244HVIMS8#TRPBF 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 technologies, serving industrial, automotive, communications, and healthcare markets.

The LTC6244HV series belongs to ADI's precision high-speed op amp product line, engineered specifically for low-noise, rail-to-rail signal conditioning in bipolar supply environments such as optical sensing and portable medical devices.

FAQ

What is the maximum total supply voltage for LTC6244HVIMS8#TRPBF?

The LTC6244HVIMS8#TRPBF supports a maximum total supply voltage of 12V, enabling operation on ±5V rails (10V total) with 2V headroom. This HV rating distinguishes it from the standard LTC6244 (7V max), allowing robust use in industrial ±5V systems where supply transients may occur. Absolute maximum ratings specify V+ to V– ≤12V; exceeding this risks permanent damage.

Does LTC6244HVIMS8#TRPBF support rail-to-rail input common mode?

No - the LTC6244HVIMS8#TRPBF supports rail-to-rail *output* swing but has an input common mode range extending from V– to V+ – 1.5V. At ±5V supplies, this means inputs must stay within –5V to +3.5V. Exceeding +3.5V may cause instability or phase inversion; the datasheet explicitly warns against applying signals within 1V of V+ in unity-gain follower configurations.

What is the thermal performance of the MS8 package for LTC6244HVIMS8#TRPBF?

The LTC6244HVIMS8#TRPBF in the 8-lead MSOP (MS8) package has a junction-to-ambient thermal resistance (θ_JA) of 250°C/W under standard JEDEC conditions. This value assumes no PCB copper pour; adding thermal vias to an internal ground plane can reduce effective θ_JA by ~30%. The exposed pad is optional but recommended for high-current or high-ambient-temperature applications.

How does the input bias current of LTC6244HVIMS8#TRPBF vary with temperature?

The LTC6244HVIMS8#TRPBF exhibits input bias current of 1pA typical at 25°C, rising to ≤75pA over –40°C to +85°C. This increase follows exponential leakage behavior of its CMOS input stage and ESD diodes. For designs using >1GΩ feedback resistors, this drift contributes ≤75μV error at 85°C - a factor that must be included in total error budgeting for precision transimpedance amplifiers.

Is LTC6244HVIMS8#TRPBF suitable for driving ADC inputs directly?

Yes - the LTC6244HVIMS8#TRPBF is well-suited for driving SAR and delta-sigma ADCs. Its rail-to-rail output swing (within 35mV of V+/V–), low 12nV/√Hz noise at 1kHz, and 50MHz GBW allow clean settling of 16-bit+ conversions. When driving switched-capacitor inputs, a series resistor (e.g., 10–50Ω) is recommended to isolate the op-amp from capacitive loading and prevent peaking, as shown in Figure G30–G32 of the datasheet.