Texas Instruments LMV721M5-TI

Overview

LMV721M5-TI 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 (0.93 mA typical at 2.2 V) operational amplifier in a 5-pin SOT-23 package. It delivers 10 MHz unity-gain bandwidth, 5 V/µs slew rate, and operates across −40°C to +85°C - optimized for battery-powered microphone preamplifiers, active filters, and portable instrumentation.

For engineers reviewing the LMV721M5-TI datasheet, LMV721M5-TI pinout, LMV721M5-TI application, or LMV721M5-TI equivalent, this page provides verified specifications, validated SC70/SOT-23 pin mapping, real-world use cases in low-voltage audio and sensing, and two confirmed alternative op amps with documented functional trade-offs.

Technical Context

The LMV721M5-TI uses a bipolar input stage with BiCMOS process technology, enabling 260 nA input bias current and 3.5 mV max input offset voltage over temperature. Its rail-to-rail output swing delivers 120 mV from either rail into 600 Ω at 2.2 V supply, supporting high dynamic range in single-supply systems.

It achieves stable unity-gain operation with up to 4700 pF capacitive load without external compensation and maintains ≥67° phase margin across 2.2 V–5 V supplies. Input common-mode range includes ground, allowing direct DC-coupled sensing near 0 V in single-ended configurations.

Key Specifications

Pinout & Package

LMV721M5-TI is packaged in a 5-pin SOT-23 (DBV) footprint measuring 2.9 mm × 1.6 mm × 1.45 mm, compatible with standard pick-and-place and reflow processes. The package features gull-wing leads and exposed pad not connected internally.

Key Features

Applications

Equivalent & Alternatives

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

Compared with LMV721M5-TI, TLV2761IDBVR trades bandwidth and noise for extreme power savings, while OPA333AIDBVR sacrifices speed and noise performance to achieve near-zero drift - neither matches the balanced 10 MHz/9 nV/0.93 mA profile of LMV721M5-TI for general-purpose low-voltage analog signal chains.

Availability

LMV721M5-TI is available at Aetrix Electronics and suitable for battery-powered microphones, portable instrumentation, and active filter designs requiring stable component supply, RoHS-compliant packaging, and guaranteed -40°C to +85°C operation.

Supply support for LMV721M5-TI 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 decades of expertise in precision op amps and low-power signal conditioning.

The LMV721M5-TI belongs to TI's LMV72x-N low-voltage op amp family, engineered specifically for space-constrained, battery-operated systems demanding rail-to-rail output, low noise, and guaranteed 2.2 V operation - targeting portable audio, medical wearables, and industrial handhelds.

FAQ

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

The LMV721M5-TI is specified to remain stable with up to 4700 pF of capacitive load in unity-gain configuration, per TI's application notes. This capability eliminates the need for series isolation resistors in many sensor and DAC output buffering applications. For loads exceeding 4700 pF, TI recommends using the resistive-isolation circuit shown in Figure 23 of the LMV721-N datasheet. Always verify stability under actual board parasitics and layout conditions.

Does the LMV721M5-TI support true single-supply operation with input signals at ground potential?

Yes, the LMV721M5-TI features an input common-mode voltage range that includes ground (−0.3 V to 1.3 V at 2.2 V supply), enabling direct DC-coupled interfacing with 0 V-referenced sensors like thermistors or bridge elements. However, input voltages must not fall below −0.3 V relative to V− to avoid forward-biasing internal ESD diodes. External clamping may be needed in overvoltage-prone environments.

What is the typical input offset voltage of the LMV721M5-TI, and how does it vary with temperature?

The LMV721M5-TI has a typical input offset voltage of 0.02 mV at 25°C and 2.2 V supply, with a maximum of 3.5 mV over the full −40°C to +85°C junction temperature range. Its average drift is 0.6 µV/°C, meaning offset changes by less than 1 µV across a 25°C ambient shift. This performance makes it suitable for moderate-precision DC amplification where chopper-stabilized op amps are unnecessary.

Can the LMV721M5-TI be used in a 3.3 V system with a 600 Ω load while maintaining rail-to-rail output swing?

Yes - at 3.3 V supply, the LMV721M5-TI delivers rail-to-rail output swing within 120 mV of each rail into 600 Ω, per interpolation of 2.2 V and 5 V test data. Measured output high is ≥3.18 V and output low is ≤0.12 V under those conditions. This ensures >95% of the 3.3 V supply is usable for signal swing, critical for maximizing SNR in low-voltage audio and sensor interfaces.

Is the LMV721M5-TI pin-compatible with other SOT-23 op amps like the LMV321 or MCP6001?

No - while all are 5-pin SOT-23 op amps, the LMV721M5-TI pinout (IN+, IN−, V−, OUT, V+) differs from LMV321 (V−, IN+, IN−, V+, OUT) and MCP6001 (V−, IN+, IN−, V+, OUT). Using LMV721M5-TI as a drop-in replacement would cause incorrect biasing or no output. Always verify pin mapping against the specific device's datasheet before PCB layout or redesign.