Texas Instruments LMC6482AIMX

Overview

LMC6482AIMX from Texas Instruments is a dual-channel CMOS rail-to-rail input and output operational amplifier optimized for precision, low-power, single-supply operation. It delivers ±0.75 mV max input offset voltage (25°C), 82 dB CMRR/PSRR, ultra-low 20 fA input bias current, and rail-to-rail output swing within 20 mV of supply rails into 100 kΩ - enabling high-accuracy signal conditioning in data acquisition systems and battery-powered medical sensors.

For engineers reviewing the LMC6482AIMX datasheet, LMC6482AIMX pinout, LMC6482AIMX application, or LMC6482AIMX equivalent, key selection criteria include its guaranteed rail-to-rail input common-mode range extending beyond both supply rails, specified performance at 3 V/5 V/15 V, compatibility with 600 Ω loads, and direct upgrade path from TLC272/TLC277 in legacy designs requiring improved linearity and dynamic range.

Technical Context

The LMC6482AIMX employs a proprietary CMOS input stage that extends the common-mode voltage range to (V−) − 0.3 V and (V+) + 0.25 V while avoiding phase inversion - a critical advantage over Bi-FET amplifiers. Its output stage sustains rail-to-rail swing into 600 Ω loads without degradation, supporting true single-supply operation across 3 V to 15.5 V supply ranges.

Designed for high-precision analog front-ends, it achieves 82 dB CMRR and PSRR across temperature (−40°C to +85°C), 1.5 MHz gain-bandwidth product, and 1.3 V/µs slew rate (15 V supply), making it suitable for buffered ADC interfaces, instrumentation amplifiers, and sensor signal chains where input headroom and output fidelity are constrained by low-voltage rails.

Key Specifications

Pinout & Package

LMC6482AIMX is packaged in an 8-pin SOIC (D package), with industry-standard pinout compatible with TLC272 and other dual op-amps. Thermal resistance R_θJA = 128.9 °C/W enables reliable operation at ambient temperatures up to +85°C without forced airflow.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TLC272CDR, LMC6482AIMX provides 100× lower input bias current and 32 dB higher CMRR - directly improving sensor accuracy and noise immunity. Against OPA2333AIDR, it offers wider supply flexibility and 2× lower supply current, trading zero-drift for cost-effective rail-to-rail performance in non-ultra-stable DC applications.

Availability

LMC6482AIMX is available at Aetrix Electronics and suitable for data acquisition, medical monitoring, industrial sensing, and test equipment requiring stable component supply, long-term lifecycle support, and consistent parametric performance across production batches.

Supply support for LMC6482AIMX 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

Texas Instruments is a global semiconductor leader specializing in analog and embedded processing technologies, with decades of expertise in precision op-amps and signal chain solutions.

The LMC6482AIMX belongs to TI's LMC648x rail-to-rail CMOS op-amp family, engineered for high-accuracy, low-power analog front-ends in battery-operated and industrial measurement systems where input/output headroom and DC precision are critical.

FAQ

What is the maximum supply voltage for LMC6482AIMX?

The absolute maximum supply voltage (V_S = V₊ − V₋) for LMC6482AIMX is 16 V, with recommended operating range from 3 V to 15.5 V. Operation above 15.5 V risks exceeding junction temperature limits and reducing reliability - especially under sustained output loading or elevated ambient conditions.

Does LMC6482AIMX support true rail-to-rail input operation?

Yes, LMC6482AIMX supports true rail-to-rail input operation with a common-mode voltage range extending to (V₋) − 0.3 V and (V₊) + 0.25 V at room temperature. This allows input signals to exceed supply rails without phase inversion - a key differentiator from Bi-FET amplifiers and essential for robust sensor interfacing.

Can LMC6482AIMX drive a 600 Ω load while maintaining rail-to-rail output swing?

Yes, LMC6482AIMX is explicitly specified for 600 Ω loads: at 5 V supply, output swing is 4.24 V (high) and 0.65 V (low) over temperature (−40°C to +85°C). This capability enables direct interface with low-impedance ADC drivers, active filters, and transmission lines without external buffers.

Is LMC6482AIMX pin-compatible with TLC272?

Yes, LMC6482AIMX uses the same 8-pin SOIC (D) package and identical pinout as TLC272CDR and TLC272CP - enabling drop-in replacement in existing designs. No PCB layout changes are required, though performance improvements (e.g., 100× lower input bias current) may necessitate minor system-level recalibration.

What is the input bias current specification for LMC6482AIMX?

The input bias current for LMC6482AIMX is ±0.02 pA typical (20 fA), with ±4 pA maximum over temperature (−40°C to +85°C). This ultra-low value minimizes voltage errors across high-impedance sources such as pH electrodes, photodiodes, and piezoelectric sensors - critical for precision measurement accuracy.