Texas Instruments LMV301MG/NOPB

Overview

LMV301MG/NOPB from Texas Instruments is a CMOS rail-to-rail output operational amplifier optimized for single-supply, low-voltage operation (1.8 V to 5 V), featuring 0.182 pA typical input bias current, 1 MHz gain bandwidth product, and 40 nV/√Hz input voltage noise at 1 kHz - enabling high-precision electrometer-grade signal conditioning in photodetection and sensor front-ends.

For engineers reviewing the LMV301MG/NOPB datasheet, LMV301MG/NOPB pinout, LMV301MG/NOPB application, or LMV301MG/NOPB equivalent, this device delivers ultra-low input leakage critical for transimpedance amplifiers, thermocouple interfaces, and sample-and-hold circuits operating from 1.8 V rails with stable performance across −40°C to +85°C.

Technical Context

The LMV301MG/NOPB employs a CMOS input stage enabling sub-picoampere input bias current and rail-to-rail output swing down to 24 mV above ground and within 130 mV of V+ at 1.8 V supply. Its unity-gain-stable architecture achieves 1 MHz GBW with only 150 µA quiescent current, supporting low-power portable systems including two-cell alkaline and single-cell Li-ion battery applications.

It operates over an extended input common-mode range (−0.3 V to +1.2 V referenced to V−) inclusive of ground, and drives 600 Ω resistive loads and up to 1000 pF capacitive loads in unity-gain configurations - validated by phase margin ≥60° and gain margin ≥10 dB across 1.8 V–5 V supplies.

Key Specifications

Pinout & Package

LMV301MG/NOPB is housed in a 5-pin SC70 (DCK) package measuring 2.0 mm × 2.1 mm × 1.0 mm, optimized for space-constrained portable and wearable electronics. The package is RoHS-compliant, lead-finished with matte tin, and rated MSL Level-1 (unlimited floor life at ≤30°C/60% RH).

Key Features

Applications

Equivalent & Alternatives

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

Compared with TLV2461IDBVR and OPA316IDBVR, LMV301MG/NOPB uniquely balances femtoampere-class input bias, 1.8 V operation, and 1 MHz bandwidth - making it irreplaceable in battery-powered electrometer circuits where input leakage directly degrades resolution.

Availability

LMV301MG/NOPB is available at Aetrix Electronics and suitable for thermocouple amplifiers, photo current amplifiers, transducer amplifiers, sample-and-hold circuits, and low-frequency active filters requiring stable component supply across industrial, medical, and portable electronics programs.

Supply support for LMV301MG/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 and embedded processing solutions, with over 50 years of innovation in precision amplifiers and low-power signal chain components.

The LMV301MG/NOPB belongs to TI's LMV low-voltage op amp family, engineered specifically for single-supply, battery-operated instrumentation where ultra-low input bias current and rail-to-rail output are mandatory for sensor interface fidelity.

FAQ

What is the minimum supply voltage for reliable operation of the LMV301MG/NOPB?

The LMV301MG/NOPB is fully specified and guaranteed to operate from 1.8 V to 5.0 V. At 1.8 V, it maintains rail-to-rail output swing (0.024 V to 1.77 V), 1 MHz gain bandwidth, and 0.182 pA input bias current - enabling direct use in single-cell Li-ion and two-cell alkaline systems without voltage regulation. Operation below 1.8 V is not characterized or recommended.

Does the LMV301MG/NOPB support rail-to-rail input common-mode voltage?

No - the LMV301MG/NOPB features rail-to-rail *output* swing but has an input common-mode voltage range of −0.3 V to +1.2 V (relative to V−). This includes ground, making it suitable for single-supply applications, but does not extend to the positive rail. For true rail-to-rail input, consider alternatives like the OPA316, though they trade off ultra-low input bias current.

Can the LMV301MG/NOPB drive a 1000 pF capacitive load stably?

Yes - the LMV301MG/NOPB is explicitly characterized to drive up to 1000 pF in unity-gain follower configuration while maintaining ≥60° phase margin and stability. For optimal transient response, TI recommends adding a small series resistor (50–100 Ω) between output and load, or using a feedback capacitor if layout-induced parasitics exceed expectations.

What PCB layout techniques are essential to preserve the 0.182 pA input bias current of the LMV301MG/NOPB?

To preserve the LMV301MG/NOPB's ultra-low input bias current, implement guard rings surrounding both inputs and connected passive components, tied to the same potential as the inputs (e.g., non-inverting input voltage). Use clean, conformal-coated FR-4 with >10¹² Ω surface resistance, avoid solder mask over high-impedance traces, and minimize contamination. TI's Application Hints (Figures 38–43) detail proven guard ring topologies for inverting, non-inverting, and follower configurations.

Is the LMV301MG/NOPB pin-compatible with the LMV321?

No - while the LMV301MG/NOPB and LMV321 share the same SC70-5 (DCK) package and pinout, they differ fundamentally in input stage architecture: the LMV301MG/NOPB uses CMOS inputs for 0.182 pA bias current, whereas the LMV321 uses bipolar inputs with ~100 nA bias current. They are not functionally interchangeable in low-leakage applications, despite identical pin mapping.