Texas Instruments LMC6082IMX

Overview

LMC6082IMX from Texas Instruments is a precision dual CMOS operational amplifier optimized for low-offset, ultra-low-input-bias-current, rail-to-rail output applications in single-supply systems (4.5 V to 15 V). It delivers 150 μV typical input offset voltage, 10 fA typical input bias current, 130 dB voltage gain, and output swing within 20 mV of supply rails into 100 kΩ - enabling high-accuracy signal conditioning in medical instrumentation and transducer interfaces.

For engineers reviewing the LMC6082IMX datasheet, LMC6082IMX pinout, LMC6082IMX application, or LMC6082IMX equivalent, key selection considerations include its guaranteed −40°C to +85°C operating temperature range, SOIC-8 packaging with RoHS-compliant lead finish, rail-to-rail output capability under load, ultra-high input resistance (>10 TΩ), and compatibility with photodiode, piezoelectric, and high-impedance sensor front-ends requiring minimal leakage and drift.

Technical Context

The LMC6082IMX employs a proprietary CMOS input stage with double-poly silicon-gate process to achieve sub-10 fA input bias current and rail-inclusive common-mode range (down to V−). Its output stage bypasses traditional push-pull buffers, sourcing/sinking up to 30 mA while maintaining 20 mV rail-to-rail swing at 15 V supply and 2 kΩ load.

It features feed-forward compensation for stable operation with capacitive loads and large feedback resistors, supports single-supply operation without level-shifting circuitry, and integrates improved latchup immunity for robustness in noisy industrial environments - all while consuming only 1.1 mA per amplifier at 15 V.

Key Specifications

Pinout & Package

LMC6082IMX is housed in an 8-pin SOIC package (Package Drawing D, JEDEC MS-012 AA), 3.91 mm × 4.90 mm footprint, 1.75 mm max height, RoHS-compliant matte tin (SN) lead finish, MSL Level-1.

Key Features

Applications

Equivalent & Alternatives

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

Compared with LMC6062IMX/NOPB and OPA2188AIDR, the LMC6082IMX uniquely balances ultra-low bias current, rail-to-rail output, and moderate speed in a single-supply-optimized package - making it optimal for high-impedance sensor interfaces where leakage and dynamic range are primary constraints.

Availability

LMC6082IMX is available at Aetrix Electronics and suitable for medical instrumentation, transducer signal conditioning, and precision analog front-ends requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for LMC6082IMX 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 company specializing in analog and embedded processing technologies, with leadership in precision analog ICs and industrial-grade reliability.

The LMC6082IMX belongs to TI's LMC precision CMOS op-amp family, designed specifically for single-supply, high-impedance sensor interface applications demanding ultra-low input bias current and rail-to-rail output performance.

FAQ

What is the operating temperature range for the LMC6082IMX?

The LMC6082IMX is rated for operation from −40°C to +85°C (Industrial grade). This range is confirmed in the Operating Ratings table of the official SNOS630D datasheet and applies specifically to the LMC6082IMX/NOPB variant in SOIC-8 packaging. It is not qualified for extended military or automotive temperature grades.

Does the LMC6082IMX support true rail-to-rail input?

No, the LMC6082IMX does not support rail-to-rail input. Its input common-mode voltage range extends to V− (including ground) but only up to V+ − 1.9 V (min) at 25°C - meaning the maximum allowable input voltage is typically ~13.1 V when V+ = 15 V. The device does provide rail-to-rail *output* swing, confirmed at ≤20 mV from either rail under specified loads.

Can the LMC6082IMX drive capacitive loads directly?

The LMC6082IMX is not inherently stable with direct capacitive loads >100 pF. As documented in the Applications Hints section, capacitive loading introduces phase lag that degrades pulse response. Stable operation requires external compensation - such as a series resistor + capacitor network (Figure 26) or a pull-up resistor to V+ (Figure 27) - especially when driving ADC input capacitance or long PCB traces.

What is the maximum output current capability of the LMC6082IMX?

The LMC6082IMX can source up to 30 mA and sink up to 34 mA (at V+ = 15 V, TJ = 25°C), per the Absolute Maximum Ratings and Electrical Characteristics tables. However, sustained output currents >15 mA require thermal derating to avoid exceeding the 150°C junction limit, particularly in SOIC-8 packages with θJA = 193°C/W.

Is the LMC6082IMX pin-compatible with other dual op-amps in SOIC-8?

The LMC6082IMX uses the industry-standard 8-pin SOIC pinout (dual op-amp configuration: Pins 1–3/Amp A, 4/V−, 5–7/Amp B, 8/V+), matching generic dual op-amp layouts like LM358 and TL072. However, functional compatibility depends on electrical specs - e.g., input stage type (CMOS vs. bipolar), supply range, and output architecture - so direct substitution requires validation of bias current, common-mode range, and output swing requirements in the target circuit.