Texas Instruments LPV511MGX

Overview

LPV511MGX from Texas Instruments is a micropower rail-to-rail input and output operational amplifier designed for ultra-low-power signal conditioning in battery- and energy-harvesting systems. It operates from 2.7 V to 12 V, draws only 880 nA supply current at 3 V, delivers 27 kHz gain bandwidth, and swings within 100 mV of both rails - enabling high dynamic range in 3-V sensor front-ends and high-side current sensing circuits.

For engineers reviewing the LPV511MGX datasheet, LPV511MGX pinout, LPV511MGX application, or LPV511MGX equivalent, key selection criteria include its guaranteed 880 nA supply current at 3 V, rail-to-rail I/O capability across –40°C to 85°C, 27 kHz bandwidth with 53° phase margin (CL = 50 pF), input offset voltage ≤ ±3 mV over temperature, and SC70-5 package compatibility with space-constrained portable PCBs.

Technical Context

The LPV511MGX uses a dual-input-stage architecture - parallel PNP and NPN differential pairs - to achieve true rail-to-rail input operation across the full common-mode range (–0.1 V to V+ + 0.1 V). Its input offset voltage exhibits a crossover point ~1 V below V+, requiring careful signal placement in precision applications.

The output stage is optimized for low-voltage swing: at 3 V supply, it sources/sinks up to 650 µA while maintaining 100 mV rail clearance; at 12 V, short-circuit current reaches ±1.35 mA. Internal unity-gain compensation ensures stability with 1 MΩ load and 50 pF capacitance, though >100 pF loads require series isolation resistance.

Key Specifications

Pinout & Package

LPV511MGX is housed in a 5-pin SC70 package (2.00 mm × 1.25 mm body size), optimized for area-constrained portable electronics and wearable devices.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MAX40007AUT+T and TLV8801DBVR, LPV511MGX uniquely balances 27 kHz bandwidth, 2.7–12 V operation, and sub-1-µA quiescent current - making it the only option supporting high-side 12-V current sensing while maintaining multi-year battery life in portable instrumentation.

Availability

LPV511MGX is available at Aetrix Electronics and suitable for battery-powered systems, remote sensor amplifiers, and micropower filters requiring stable component supply across industrial temperature ranges and long-lifecycle deployments.

Supply support for LPV511MGX 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 low-power op amps and precision signal chains.

The LPV511MGX belongs to TI's micropower operational amplifier product line, engineered specifically for ultra-long-life, low-voltage sensor interface and battery monitoring applications where nanoscale current efficiency cannot be compromised.

FAQ

What is the maximum operating temperature range for LPV511MGX?

The LPV511MGX is specified for continuous operation from –40°C to +85°C ambient temperature. Electrical characteristics including input offset voltage (±3.8 mV max), supply current (≤1.5 µA), and output swing (≤200 mV from rails) are guaranteed across this full industrial temperature range - critical for outdoor sensor nodes and automotive cabin modules.

Does LPV511MGX support true rail-to-rail input at 12-V supply?

Yes, LPV511MGX supports rail-to-rail input operation at 12 V: its input common-mode voltage range extends from –0.1 V to 12.1 V (V+ + 0.1 V) at 25°C, and from 0 V to 12 V over –40°C to 85°C. This enables direct high-side current sensing in 12-V battery systems without external level-shifting circuitry.

Can LPV511MGX drive a 1000-pF capacitive load directly?

No, LPV511MGX is not stable with direct 1000-pF loads. It is unity-gain stable with ≤50 pF capacitive load (RL = 1 MΩ). For 1000-pF loads, a series isolation resistor (RISO) of 10–100 Ω must be placed between VOUT and the capacitor to restore phase margin - per Figure 27 in the LPV511MGX datasheet.

What is the output short-circuit current capability of LPV511MGX at 5 V?

At 5 V supply, LPV511MGX delivers ±1.35 mA short-circuit output current (sinking to V+ and sourcing to V–) under momentary test conditions. Continuous short-circuit operation is not recommended; the device limits current to protect itself, but thermal derating applies above 6 V supply.

Is LPV511MGX pin-compatible with other SC70-5 op amps like TLV8801?

No, LPV511MGX is not pin-compatible with TLV8801DBVR. While both use SC70-5 packages, their pinouts differ: LPV511MGX assigns Pin 1 to VOUT, Pin 2 to V–, Pin 3 to VIN+, Pin 4 to VIN–, and Pin 5 to V+; TLV8801DBVR uses Pin 1 = V+, Pin 2 = VIN–, Pin 3 = VIN+, Pin 4 = V–, Pin 5 = VOUT - requiring PCB redesign for substitution.