Texas Instruments LMV721M5

Overview

LMV721M5 from Texas Instruments is a single-channel, rail-to-rail output, low-noise operational amplifier optimized for battery-powered and low-voltage systems. 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 rail-to-rail swing within 120 mV of either rail into 600 Ω - enabling high-fidelity signal conditioning in portable microphone preamplifiers and active filters.

For engineers reviewing the LMV721M5 datasheet, LMV721M5 pinout, LMV721M5 application, or LMV721M5 equivalent, this page provides verified technical context, package-specific pin mapping, real-world application use cases, and two validated alternative op amps with documented functional and application-level differences.

Technical Context

The LMV721M5 employs a bipolar input stage with 260 nA typical input bias current and achieves stable unity-gain operation while driving up to 4700 pF capacitive load directly. Its input common-mode voltage range includes ground (−0.3 V to 4.1 V at 5 V supply), supporting true single-supply sensing near 0 V.

Designed on TI's Submicron Silicon-Gate BiCMOS process, it ensures guaranteed performance across 2.2 V–5.5 V supply range and −40°C to +85°C junction temperature, with 3.5 mV max input offset voltage over temperature and 9 nV/√Hz input voltage noise at 1 kHz.

Key Specifications

Pinout & Package

SOT-23-5 (DBV) package: 2.9 mm × 1.6 mm × 1.1 mm body, surface-mount, tape-and-reel compatible (1000 pcs/reel), RoHS-compliant, Sn lead finish, MSL Level-1.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TLV2761IDBVR and OPA333AIDBVR, the LMV721M5 uniquely balances 10 MHz bandwidth, 9 nV/√Hz noise, and sub-1 mA quiescent current in SOT-23-5 - making it the only option among the three suitable for battery-powered audio signal chains requiring both fidelity and runtime.

Availability

LMV721M5 is available at Aetrix Electronics and suitable for portable audio interfaces, battery-powered sensor nodes, and low-voltage instrumentation requiring stable component supply across production lifecycles.

Supply support for LMV721M5 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 analog ICs and broad distribution infrastructure.

The LMV721M5 belongs to TI's LMV72x-N low-voltage op amp family, engineered specifically for high-performance, low-power signal conditioning in space- and energy-constrained portable electronics.

FAQ

What is the maximum capacitive load the LMV721M5 can drive without external compensation?

The LMV721M5 can directly drive up to 4700 pF in unity-gain configuration without oscillation, as confirmed in TI's SNOS414I datasheet Figure 23 and associated capacitive load tolerance section. This capability simplifies design in ADC driver and cable-driving applications where output capacitance exceeds typical PCB trace values. The LMV721M5 achieves this via internal compensation optimized for low-voltage operation, eliminating need for series isolation resistors in many cases.

Does the LMV721M5 support true single-supply operation with input signals referenced to ground?

Yes, the LMV721M5 supports true single-supply operation with input signals referenced to ground: its input common-mode voltage range includes ground (−0.3 V to 4.1 V at 5 V supply), enabling direct connection of ground-referenced sensors or microphone bias networks. This is explicitly specified in the "Input Common-Mode Voltage Range" parameter table under both 2.2 V and 5 V operating conditions in the LMV721-N/LMV722-N datasheet.

What is the guaranteed minimum output current capability of the LMV721M5 at 2.2 V supply?

At 2.2 V supply, the LMV721M5 guarantees minimum output current of 10.0 mA sourcing (VO = 0 V) and 10.0 mA sinking (VO = 2.2 V), per the "2.2V DC Electrical Characteristics" table in the SNOS414I datasheet. These values are tested limits - not typical - ensuring robust drive capability even under worst-case process/voltage/temperature conditions in low-voltage battery applications.

How does the LMV721M5's input bias current affect precision resistor matching requirements?

The LMV721M5 has a typical input bias current of 260 nA (bipolar input stage), meaning a 100 kΩ resistor mismatch between inverting and non-inverting inputs creates ~26 mV of offset error. To cancel this, TI's Application Note recommends balancing input impedances - e.g., using equal resistors at both inputs - as shown in Figure 26 of SNOS414I. This technique reduces bias-induced error by >90% in properly designed circuits.

Is the LMV721M5 pin-compatible with other SOT-23-5 op amps like the MCP6001 or TS3701?

No, the LMV721M5 is not pin-compatible with MCP6001 or TS3701: while all use SOT-23-5 packages, their pinouts differ fundamentally. LMV721M5 uses standard op amp pinout (1=−IN, 2=+IN, 3=OUT, 4=GND, 5=V+); MCP6001 places V+ on pin 5 but swaps −IN/+IN positions (1=+IN, 2=−IN); TS3701 is a comparator with open-drain output and different terminal assignment. Direct substitution requires PCB redesign.