STMicroelectronics LMV321LILT

Overview

LMV321LILT from STMicroelectronics is a single, rail-to-rail output, low-power operational amplifier in SOT23-5 package, designed for 2.7 V–5.5 V supply operation. It delivers 1.3 MHz gain bandwidth, 250 µA max supply current at 5 V, 7 mV max input offset voltage at 25 °C, and operates across –40 °C to +125 °C - enabling precision signal conditioning in space-constrained battery-powered medical sensors.

For engineers reviewing the LMV321LILT datasheet, LMV321LILT pinout, LMV321LILT application, or LMV321LILT equivalent, key selection criteria include its rail-to-rail output swing (≤180 mV from rails), low input bias current (27–60 nA), industrial temperature rating, and compatibility with 2 kΩ–10 kΩ load configurations in active filtering and portable instrumentation.

Technical Context

The LMV321LILT employs a CMOS input stage supporting rail-to-rail output swing and an extended input common-mode range from (V_CC–) – 0.2 V to (V_CC+) – 1 V, with no phase reversal. Its 1.3 MHz GBP and 0.6–0.7 V/µs slew rate support stable unity-gain buffer and first-order active filter designs under 5 V supply.

It features 70–75 dB CMRR and 72–79 dB SVRR over 2.7–5.5 V supply, with input offset drift of 5 µV/°C across –40 °C to +125 °C. Output short-circuit capability includes ±35 mA sinking and ±60 mA sourcing, validated per Figure 4–5 in the datasheet.

Key Specifications

Pinout & Package

SOT23-5 package: 2.9 mm × 2.8 mm × 1.3 mm body, 0.95 mm lead pitch, surface-mount, RoHS-compliant ECOPACK®2.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar low-power, rail-to-rail op-amp applications.

Compared with TSV911ICT and MCP6001UT-E/OT, LMV321LILT uniquely balances 1.3 MHz bandwidth, 250 µA max supply current, and –40 °C to +125 °C operation in SOT23-5 - making it optimal for industrial-grade portable instrumentation where thermal robustness and moderate speed coexist with strict power constraints.

Availability

LMV321LILT is available at Aetrix Electronics and suitable for battery-powered medical devices, portable environmental sensors, and industrial signal conditioning circuits requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for LMV321LILT 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

STMicroelectronics is a global semiconductor leader headquartered in Geneva, Switzerland, designing and manufacturing microcontrollers, power ICs, sensors, and analog components for automotive, industrial, and consumer markets.

The LMV321L series belongs to ST's low-power precision op-amp product line, engineered specifically for cost-sensitive, space-constrained applications demanding rail-to-rail performance and extended temperature resilience in portable and harsh-environment electronics.

FAQ

What is the maximum capacitive load the LMV321LILT can drive stably?

Per Figure 9 and Figure 10 in the datasheet, LMV321LILT maintains ≥60° phase margin with ≤100 pF capacitive load at 5 V supply and R_L = 10 kΩ. Driving >200 pF requires isolation resistor (≥100 Ω) or gain compensation; Figure 10 shows gain peaking begins at 45 pF in unity-gain configuration.

Does LMV321LILT support single-supply operation with input signals at ground potential?

Yes. Its input common-mode range extends to (V_CC–) – 0.2 V, allowing direct connection of ground-referenced sensors or DAC outputs. No level-shifting circuitry is needed, and output remains rail-to-rail even with inputs at 0 V.

How does LMV321LILT's input offset voltage drift impact accuracy over temperature?

Maximum ΔV_io/ΔT is 5 µV/°C across –40 °C to +125 °C. Over this 165 °C span, worst-case drift is 825 µV - adding ≤0.08% error in a 1 V full-scale system. This is confirmed in Table 3 and Table 4 under "Input offset voltage drift" conditions.

Is LMV321LILT pin-compatible with other SOT23-5 op-amps like MCP6001 or TS3701?

No. While all use SOT23-5, LMV321LILT pinout is OUT–IN– –IN+–V_CC––V_CC+. MCP6001 uses OUT–IN+–IN––V_CC––V_CC+; TS3701 is comparator-only with different functional pin mapping. Direct replacement requires PCB redesign.