Texas Instruments LMV721M5X/NOPB

Overview

LMV721M5X/NOPB from Texas Instruments is a single-channel, rail-to-rail output, low-noise (9 nV/√Hz), low-voltage (2.2 V to 5.5 V), and low-power (930 µA at 2.2 V) operational amplifier in a 5-pin SOT-23 package. It delivers 10 MHz unity-gain bandwidth and 5 V/µs slew rate, optimized for battery-powered microphone preamplifiers, active filters, and portable instrumentation.

For engineers reviewing the LMV721M5X/NOPB datasheet, LMV721M5X/NOPB pinout, LMV721M5X/NOPB application, or LMV721M5X/NOPB equivalent, key selection criteria include input common-mode range including ground, rail-to-rail output swing into 600 Ω (120 mV from rails at 2.2 V), 3.5 mV max input offset voltage over temperature, and verified capacitive load drive capability up to 4700 pF in unity-gain configuration.

Technical Context

The LMV721M5X/NOPB employs a bipolar input stage with BiCMOS process technology, enabling low input bias current (260 nA typical) while maintaining high speed and low noise. Its input common-mode voltage range extends to ground, supporting true single-supply operation without level-shifting circuitry.

It features stable unity-gain operation with ≥67° phase margin and supports heavy capacitive loads directly-up to 4700 pF-without external compensation. The device operates across −40°C to +85°C and is characterized for guaranteed performance at both 2.2 V and 5.0 V supply rails.

Key Specifications

Pinout & Package

LMV721M5X/NOPB is housed in a 5-pin SOT-23 (DBV) package, 2.9 mm × 1.6 mm × 1.1 mm, with moisture sensitivity level 1 (260°C reflow compatible). Pin 1 is located at the index corner (Q3 quadrant in tape).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar low-noise, low-voltage op amp applications.

Compared with TLV271IDBVR and OPA333AIDBVR, LMV721M5X/NOPB uniquely balances 10 MHz bandwidth, 9 nV/√Hz noise, and 930 µA supply current in SOT-23-5-making it optimal for battery-powered analog signal chains requiring both speed and fidelity.

Availability

LMV721M5X/NOPB is available at Aetrix Electronics and suitable for battery-powered microphones, active filters, and portable instrumentation requiring stable component supply, consistent tape-and-reel packaging (3000 pcs/reel), and long-term lifecycle support.

Supply support for LMV721M5X/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 op amp innovation and manufacturing excellence.

The LMV721-N series was designed specifically for low-voltage, low-noise, and low-power signal conditioning in portable and battery-operated systems-prioritizing rail-to-rail output, ground-sensing inputs, and robust capacitive load drive.

FAQ

What is the maximum capacitive load the LMV721M5X/NOPB can drive without oscillation?

The LMV721M5X/NOPB is specified to drive up to 4700 pF in unity-gain configuration without external compensation. This capability is validated per TI's application notes and eliminates the need for isolation resistors when interfacing with ADC input capacitors or long PCB traces. For loads exceeding 4700 pF, TI recommends using the resistive-isolation circuit shown in Figure 23 of the LMV721-N datasheet. The LMV721M5X/NOPB maintains stability due to its internal compensation and phase margin ≥67° at 2.2 V.

Does the LMV721M5X/NOPB support true single-supply operation with input signals at ground potential?

Yes, the LMV721M5X/NOPB features an input common-mode voltage range that includes ground (−0.3 V to V_CC − 0.3 V), enabling direct connection of grounded-output sensors or AC-coupled signals referenced to GND. This eliminates level-shifting circuitry in single-supply designs. However, input voltages must not fall below −0.3 V to prevent forward-biasing internal ESD diodes. The LMV721M5X/NOPB achieves this while maintaining 88 dB CMRR at 2.2 V supply.

What is the typical input offset voltage and drift of the LMV721M5X/NOPB over temperature?

The LMV721M5X/NOPB has a maximum input offset voltage of 3.5 mV over the full operating temperature range (−40°C to +85°C), with typical value of ±0.02 mV at 25°C. Its average input offset voltage drift is 0.6 µV/°C, measured across temperature. These specifications are verified per TI's production test flow and ensure predictable DC error in precision gain stages. The LMV721M5X/NOPB does not use auto-zero or chopper techniques, so drift remains linear and bounded.

How does the LMV721M5X/NOPB perform at 2.2 V supply compared to 5 V?

At 2.2 V, the LMV721M5X/NOPB delivers 930 µA quiescent current, 10 MHz GBW, 4.9 V/µs slew rate, and rail-to-rail output swing within 120 mV of each rail into 600 Ω. At 5 V, quiescent current rises to 1.03 mA, slew rate improves to 5.25 V/µs, and output swing tightens to 134 mV from rails. All key AC/DC specs-including CMRR (88 dB), PSRR (90 dB), and noise (9 nV/√Hz)-are ensured at both voltages per TI's characterization. The LMV721M5X/NOPB is explicitly tested and guaranteed for 2.2 V operation.

Is the LMV721M5X/NOPB pin-compatible with other SOT-23-5 op amps like the TLV271 or OPA333?

The LMV721M5X/NOPB uses standard SOT-23-5 pinout (V+, In−, In+, Output, V−), matching industry convention and enabling mechanical compatibility with TLV271IDBVR and OPA333AIDBVR. However, electrical behavior differs significantly: LMV721M5X/NOPB offers 10 MHz GBW vs. 3 MHz (TLV271) or 350 kHz (OPA333), and higher noise (9 nV/√Hz) than OPA333 (0.6 µV_PP). No PCB changes are required for footprint replacement, but circuit revalidation is essential due to bandwidth, noise, and offset differences. The LMV721M5X/NOPB is not a drop-in functional replacement.