Texas Instruments LMC6024IM/NOPB

Overview

LMC6024IM/NOPB from Texas Instruments is a low-power CMOS quad operational amplifier designed for high-impedance signal conditioning in single-supply (4.75–15.5 V) or dual-supply systems. It delivers 120 dB voltage gain into 100 kΩ, ultra-low 40 fA input bias current, and rail-to-rail output swing down to V−, enabling precision buffering and integration in medical instrumentation and industrial controls.

For engineers reviewing the LMC6024IM/NOPB datasheet, LMC6024IM/NOPB pinout, LMC6024IM/NOPB application, or LMC6024IM/NOPB equivalent, key selection criteria include input bias current stability over temperature, common-mode range extending to V−, micropower operation at 160 μA per amplifier, and verified performance into 5 kΩ loads without instability.

Technical Context

The LMC6024IM/NOPB uses a compound integrator-based topology with dual feed-forward compensation (Cf and Cff), eliminating the traditional unity-gain buffer to achieve rail-to-rail output swing while maintaining stability into 500 Ω resistive loads. Its output stage employs a push-pull configuration optimized for both sourcing and sinking current.

DC performance is characterized by 2.5 μV/°C offset drift, >1 TΩ input resistance, and 83 dB CMRR at V+ = 5 V. AC behavior includes 0.11 V/μs slew rate, 0.35 MHz gain-bandwidth product, and 130 dB amp-to-amp isolation-enabling accurate multi-channel signal processing without crosstalk degradation.

Key Specifications

Pinout & Package

LMC6024IM/NOPB is housed in a 14-pin SOIC (D0014A) package with 1.27 mm pitch, 8.75 mm × 3.9 mm body, and 1.75 mm max height. RoHS-compliant matte tin lead finish, MSL Level-1, and tube packaging (55 units) support automated assembly and long-term storage.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TLV2464IDR and OPA4340UA, the LMC6024IM/NOPB uniquely balances femtoampere input bias, rail-to-rail output, and sub-milliwatt power in a single 14-pin SOIC-making it irreplaceable for ultra-high-impedance, battery-constrained measurement systems where leakage and quiescent power dominate design trade-offs.

Availability

LMC6024IM/NOPB is available at Aetrix Electronics and suitable for medical instrumentation, industrial sensor interfaces, and portable data loggers requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for LMC6024IM/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 specializing in analog and embedded processing technologies, with over 90 years of innovation in precision analog ICs and power management solutions.

The LMC6024IM/NOPB belongs to TI's LMC6000 series of micropower CMOS op-amps, engineered specifically for ultra-low-input-bias, rail-to-rail, single-supply operation in high-impedance sensor signal conditioning and portable medical electronics.

FAQ

What is the maximum capacitive load the LMC6024IM/NOPB can drive without oscillation?

The LMC6024IM/NOPB can drive up to 100 pF capacitive loads stably in unity-gain follower configuration without external compensation. For loads exceeding 100 pF, a 50–100 Ω series resistor at the output combined with a 5–10 pF feedback capacitor from inverting input to output restores phase margin. This configuration is validated in Figure 26 of the official datasheet and maintains stability even with 1 nF loads when properly implemented.

Does the LMC6024IM/NOPB support true rail-to-rail input operation?

No, the LMC6024IM/NOPB does not support rail-to-rail input operation. Its input common-mode voltage range extends to V− but only up to V+ − 2.3 V at 15 V supply (or V+ − 1.9 V at 5 V supply). This means the non-inverting input must remain ≥0.1 V above V− and ≤12.7 V below V+ for guaranteed CMRR ≥50 dB. The rail-to-rail capability applies exclusively to the output stage.

Can the LMC6024IM/NOPB be used in a single-supply 3.3 V system?

No, the LMC6024IM/NOPB is not specified for 3.3 V operation. Its minimum supply voltage is 4.75 V per the Operating Ratings table, and electrical characteristics are guaranteed only from 4.75 V to 15.5 V. Attempting 3.3 V operation results in undefined output swing, degraded gain, and potential failure to meet input bias or offset specifications. Use TI's TLV2464 or OPA340 for 3.3 V-compatible quad op-amps.

How does the LMC6024IM/NOPB achieve 130 dB amp-to-amp isolation?

The LMC6024IM/NOPB achieves 130 dB amp-to-amp isolation through complete physical separation of input stages and dedicated output drivers per channel, combined with low-capacitance inter-die routing and shared but heavily decoupled power rails. This isolation is measured with 1 kHz excitation and 100 kΩ load (Figure 9), ensuring minimal crosstalk in multi-channel integrators or simultaneous-sampling sensor arrays where channel independence is critical.

Is the LMC6024IM/NOPB suitable for long-term integrator circuits?

Yes, the LMC6024IM/NOPB is explicitly qualified for long-term integrator applications due to its 0.01 pA typical input offset current, 2.5 μV/°C offset drift, and ability to maintain stability with large hold capacitors. Figure 38 shows a validated low-leakage sample-and-hold implementation using the LMC6024IM/NOPB, and the datasheet lists "Long-term Integrator" as a primary application. Guard-ring PCB layout is mandatory to preserve femtoampere-level performance.