Texas Instruments LMC6082IN/NOPB

Overview

LMC6082IN/NOPB from Texas Instruments is a precision dual CMOS operational amplifier optimized for single-supply operation (4.5 V to 15 V), featuring 150 μV typical input offset voltage, 10 fA ultra-low input bias current, rail-to-rail output swing within 20 mV of supply rails (at 100 kΩ load), and 130 dB high open-loop voltage gain - enabling high-accuracy signal conditioning in battery-powered medical sensors and photodiode preamplifiers.

For engineers reviewing the LMC6082IN/NOPB datasheet, LMC6082IN/NOPB pinout, LMC6082IN/NOPB application, or LMC6082IN/NOPB equivalent, key selection criteria include guaranteed input common-mode range extending to V− (ground), low-noise performance (22 nV/√Hz at 1 kHz), thermal stability across −40°C to +85°C, and compatibility with high-impedance transducer interfaces requiring sub-picoampere leakage control.

Technical Context

The LMC6082IN/NOPB employs a direct-integrator output stage-bypassing conventional push-pull buffers-to achieve rail-to-rail swing while maintaining low output impedance and high large-signal gain (≥300 V/mV at 2 kΩ). Its internal feed-forward compensation ensures stable operation across wide capacitive load and supply voltage ranges (4.5 V–15.5 V).

This architecture delivers 1.5 V/μs slew rate and 1.3 MHz gain-bandwidth product under 5 V single-supply conditions, with phase margin ≥50° and amp-to-amp isolation >140 dB - supporting precision instrumentation amplifier topologies and low-distortion (<0.01% THD) signal paths without external compensation in most configurations.

Key Specifications

Pinout & Package

LMC6082IN/NOPB is housed in an 8-pin plastic dual in-line package (PDIP) with standard SOIC-compatible footprint (0.300" body width, 0.100" lead pitch). The package is RoHS-compliant, lead-free, and rated for −40°C to +85°C operation.

Key Features

Applications

Equivalent & Alternatives

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

Compared with LMC6062IM/NOPB and OPA2182IDR, the LMC6082IN/NOPB uniquely balances ultra-low bias current, rail-to-rail input common-mode range including ground, and 1.3 MHz bandwidth - making it the only option among the three that supports both high-impedance transducer interfacing and moderate-speed precision signal conditioning in single-supply systems.

Availability

LMC6082IN/NOPB is available at Aetrix Electronics and suitable for medical instrumentation, portable gas detectors, and industrial transducer signal conditioning requiring stable component supply, long-term lifecycle continuity, and RoHS-compliant through-hole assembly.

Supply support for LMC6082IN/NOPB 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 delivering analog, embedded processing, and connectivity solutions with deep expertise in precision analog design and high-reliability manufacturing.

The LMC6082IN/NOPB belongs to TI's LMC precision CMOS op-amp family, engineered specifically for single-supply, high-input-impedance applications in portable instrumentation, medical devices, and sensor signal conditioning where femtoampere-level leakage and rail-to-rail operation are essential.

FAQ

What is the maximum operating temperature range for the LMC6082IN/NOPB?

The LMC6082IN/NOPB is specified for operation from −40°C to +85°C (industrial grade). This range is confirmed in the Operating Ratings table of the official datasheet (SNOS630D, Rev. March 2013), and applies to the LMC6082I and LMC6082AI variants - including the LMC6082IN/NOPB in PDIP packaging. Junction temperature must not exceed 150°C under any condition.

Does the LMC6082IN/NOPB support true rail-to-rail input common-mode voltage?

No - the LMC6082IN/NOPB supports rail-to-rail *output* swing and an input common-mode range that *includes V−* (ground), but does not extend to V+. Per the datasheet, the input common-mode voltage range is specified as −0.1 V to (V+ − 2.3 V) at 25°C. This makes it ideal for single-supply grounded-sensor interfaces but unsuitable for inputs near V+ without attenuation.

Can the LMC6082IN/NOPB drive capacitive loads directly?

The LMC6082IN/NOPB exhibits reduced phase margin with direct capacitive loading and may oscillate. As documented in the Applications Hints section, stable operation requires either a resistive load in parallel with the capacitor (e.g., 1–10 kΩ pull-up to V+) or external compensation (e.g., series resistor + feedback capacitor). Figure 26 and Figure 27 in the datasheet provide validated circuit configurations for driving >100 pF loads.

Is the LMC6082IN/NOPB pin-compatible with other dual op-amps in PDIP-8 packages?

The LMC6082IN/NOPB follows the industry-standard dual op-amp pinout (Pin 1: A-invert, Pin 2: A-noninv, Pin 3: A-out, Pin 4: V−, Pin 5: B-invert, Pin 6: B-noninv, Pin 7: B-out, Pin 8: V+), matching LM358, TL072, and OP27 families. However, functional compatibility depends on specifications - e.g., LM358 has higher bias current (45 nA) and no rail-to-rail output, so substitution requires validation of offset, speed, and supply constraints.

What PCB layout practices are required to preserve the 10 fA input bias current of the LMC6082IN/NOPB?

To maintain sub-100 fA leakage, the LMC6082IN/NOPB requires guard rings surrounding both inputs and connected nodes, routed on top and bottom layers and tied to the same potential as the input (e.g., reference voltage or virtual ground). Surface contamination, humidity, and board material (FR-4 leakage >10¹² Ω) must be controlled; the datasheet recommends air-wiring inputs when ultimate leakage performance is needed - a technique validated in Figure 30.