Texas Instruments LMV721M5X

Overview

LMV721M5X from Texas Instruments is a single-channel, rail-to-rail output operational amplifier optimized for low-voltage, low-noise, and low-power applications. It delivers 10 MHz unity-gain bandwidth, 5.25 V/µs slew rate at 5 V supply, 930 µA quiescent current at 2.2 V, and input voltage noise of 8.5 nV/√Hz at 1 kHz - enabling high-fidelity signal conditioning in battery-powered microphone preamplifiers and portable instrumentation.

For engineers reviewing the LMV721M5X datasheet, LMV721M5X pinout, LMV721M5X application, or LMV721M5X equivalent, this page provides verified technical context, package-validated pin functions, real-world application mappings, and two confirmed alternative parts with documented functional and parametric differences for design-in decisions.

Technical Context

The LMV721M5X employs a bipolar input stage with BiCMOS process technology, supporting operation from 2.2 V to 5.5 V while maintaining rail-to-rail output swing into 600 Ω (within 120 mV of either rail at 2.2 V) and an input common-mode range that includes ground. Its 10 MHz gain-bandwidth product and 72° phase margin at 5 V ensure stable unity-gain operation with capacitive loads up to 4700 pF.

It achieves 3.5 mV max input offset voltage over temperature and 0.6 µV/°C typical drift, with input bias current of 260 nA - requiring matched resistors for bias cancellation in precision DC-coupled circuits. The device is specified across −40°C to +85°C junction temperature and features ESD tolerance of 2000 V (HBM).

Key Specifications

Pinout & Package

LMV721M5X is packaged in a 5-pin SOT-23 (DBV) package measuring 2.9 mm × 1.6 mm × 1.1 mm, with moisture sensitivity level (MSL) 1 and lead finish Sn (RoHS compliant). Pin 1 is located at the index corner (Q3 quadrant per tape orientation), and the package is compatible with standard reflow profiles (peak 260°C).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar operational amplifier applications.

Compared with LMV721M7X/NOPB, LMV721M5X offers identical analog performance in a more widely supported SOT-23 footprint; compared with MCP6001T-I/OT, it trades 9× higher quiescent current for 10× greater bandwidth and 3× lower input noise - making it appropriate for signal integrity–critical rather than energy–critical roles.

Availability

LMV721M5X is available at Aetrix Electronics and suitable for battery-powered microphones, portable instrumentation front-ends, and active filters requiring stable component supply with guaranteed long-term manufacturability and TI's production-grade quality control.

Supply support for LMV721M5X 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 50 years of op amp innovation and manufacturing excellence.

The LMV721-N series was designed specifically for low-voltage, low-noise portable electronics - targeting applications where rail-to-rail output, 2.2 V operation, and sub-1 mA quiescent current are mandatory system requirements.

FAQ

What is the maximum capacitive load the LMV721M5X can drive without external compensation?

The LMV721M5X can directly drive up to 4700 pF in unity-gain configuration without oscillation or instability, as verified in TI's SNOS414I datasheet Figure 23. This eliminates the need for isolation resistors in many sensor interface and filter applications. For loads exceeding 4700 pF, TI recommends using the resistive-isolation circuit shown in Figure 23 or the feed-forward stability network in Figure 25. The LMV721M5X's phase margin remains ≥67° at 2.2 V and ≥72° at 5 V, ensuring robust stability margins under varying supply and load conditions.

Does the LMV721M5X support true single-supply operation with input signals near ground?

Yes, the LMV721M5X supports true single-supply operation with input common-mode voltage range extending to −0.3 V (at 25°C) and up to V_CC − 0.3 V - explicitly including ground. This allows direct interfacing with ground-referenced sensors such as thermistors, bridge transducers, or electret microphones without level-shifting circuitry. However, input voltages must not fall below −0.3 V to prevent forward-biasing internal ESD protection diodes; external clamping may be required in noisy environments. The LMV721M5X's bipolar input stage ensures consistent bias current behavior across this range.

What is the thermal resistance (θ_JA) of the LMV721M5X in its SOT-23 package?

The LMV721M5X in the SOT-23 (DBV) package has a thermal resistance θ_JA of 265°C/W, as specified in the "Operating Ratings" table of the SNOS414I datasheet. This value assumes the device is soldered directly onto a standard FR-4 PCB with no additional copper pour or thermal vias. With typical PCB layout practices - including 1-inch² copper pad connected to pin 4 (GND) via ≥4 thermal vias - actual θ_JA can improve to ~120°C/W. At maximum rated junction temperature (150°C) and ambient of 85°C, the absolute maximum continuous power dissipation is 245 mW - well above the 2.2 V × 0.93 mA = 2.05 mW typical operating power.

How does the LMV721M5X compare to the LMV722 dual op amp in terms of supply current and noise?

The LMV721M5X draws 0.93 mA typical supply current at 2.2 V, while the LMV722 dual draws 1.81 mA - confirming per-amplifier current matching (905 µA/amplifier). Input voltage noise is identical at 8.5 nV/√Hz (5 V) and 9 nV/√Hz (2.2 V) for both parts. Both share the same BiCMOS process, rail-to-rail output architecture, and 10 MHz GBW. The LMV721M5X is not a derivative but the single-channel member of the same validated family - meaning all DC/AC specs, ESD ratings, and application circuits from the LMV722 datasheet apply directly to the LMV721M5X, simplifying design reuse across channel-count variants.

Is the LMV721M5X RoHS compliant and what is its MSL rating?

Yes, the LMV721M5X is RoHS compliant (lead finish Sn, "Yes" in TI's Package Option Addendum) and rated MSL Level 1 (260°C peak reflow, unlimited floor life). This means it can be stored indefinitely at ambient conditions without baking prior to assembly and withstands standard lead-free reflow profiles without moisture-related failure. The "NOPB.A" suffix confirms TI's standard green packaging - fully compliant with JEDEC J-STD-020D and EU Directive 2011/65/EU. Traceability documentation, including material declarations and CoC, is available through TI's Quality Portal upon request.