Texas Instruments PLPV811DBVT

Overview

PLPV811DBVT from Texas Instruments is a single-channel nanopower precision operational amplifier designed for ultra-low-power, battery-critical sensing applications. It delivers 425 nA typical supply current, 370 µV maximum offset voltage, 1 µV/°C offset drift, 8 kHz gain-bandwidth, and rail-to-rail output swing within 3.5 mV of the rails at 1.8 V - enabling high-precision signal conditioning in CO gas detectors, IoT remote sensors, and portable medical equipment.

For engineers reviewing the PLPV811DBVT datasheet, PLPV811DBVT pinout, PLPV811DBVT application, or PLPV811DBVT equivalent, key selection criteria include its femtoamp-level input bias current (±100 fA), –40°C to 125°C operating range, EMI-hardened architecture, and compatibility with 1.6 V to 5.5 V single-supply operation in space-constrained SOT-23 packages.

Technical Context

The PLPV811DBVT employs a CMOS input stage with negative-rail sensing capability, supporting common-mode input down to V–, and features an internally compensated rail-to-rail output stage optimized for low-voltage dynamic range preservation. Its 8 kHz unity-gain stable bandwidth is achieved with only 425 nA quiescent current per channel.

EMI protection is integrated at the die level to suppress interference from mobile phones, WiFi, and RFID readers. The device maintains ≥77 dB CMRR across its full common-mode range and exhibits ±100 fA input bias current - critical for high-impedance sensor interfaces such as electrochemical gas cells and thermistor networks.

Key Specifications

Pinout & Package

PLPV811DBVT is packaged in a 5-pin SOT-23 (DBV) with body dimensions 2.90 mm × 1.60 mm, optimized for high-density PCB layouts in portable and wearable electronics.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar nanopower op-amp applications.

Compared with LPV801DBVR and OPA316IDBVR, PLPV811DBVT uniquely balances sub-µV offset, femtoamp bias, and EMI resilience at nanopower levels - making it irreplaceable in certified safety-critical gas detection and energy-harvested IoT endpoints where both precision and longevity are non-negotiable.

Availability

PLPV811DBVT is available at Aetrix Electronics and suitable for CO gas detectors, PIR motion sensors, and portable medical equipment requiring stable component supply across extended production lifecycles.

Supply support for PLPV811DBVT 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 for industrial, automotive, and personal electronics markets.

The LPV81x family was engineered specifically for "always ON" battery-powered sensing - prioritizing ultra-low quiescent current, precision DC performance, and robustness in electrically noisy, thermally variable environments.

FAQ

What is the maximum supply voltage for PLPV811DBVT?

The absolute maximum supply voltage for PLPV811DBVT is 6 V, but the recommended operating range is 1.6 V to 5.5 V. Operating beyond 5.5 V risks permanent damage, while operation below 1.6 V may cause loss of rail-to-rail output swing and increased offset drift. PLPV811DBVT is commonly deployed at 3.3 V or 1.8 V in low-power sensor nodes.

Does PLPV811DBVT support rail-to-rail input?

No, PLPV811DBVT does not support rail-to-rail input. Its input common-mode voltage range extends from V– to (V+) – 0.9 V, enabling true negative-rail sensing but limiting positive-side headroom. This design prioritizes low offset and EMI immunity over full rail-to-rail input - a trade-off validated in gas sensor and thermistor applications where V– referenced signals dominate.

Can PLPV811DBVT drive capacitive loads directly?

PLPV811DBVT is unity-gain stable but becomes unstable with capacitive loads >50 pF directly on the output. For reliable operation, a series isolation resistor (R_ISO = 30–50 kΩ) must be placed between the output and the load capacitance. This preserves phase margin without degrading DC accuracy - a requirement confirmed in TIDA-0756 CO sensor reference designs using PLPV811DBVT.

What is the ESD rating of PLPV811DBVT?

PLPV811DBVT has a Human-Body Model (HBM) ESD rating of ±1000 V and a Charged-Device Model (CDM) rating of ±250 V, per JEDEC JS-001 and JESD22-C101 standards. These ratings reflect robust on-die protection sufficient for standard automated assembly environments but do not eliminate the need for proper ESD handling during PCB rework or prototyping.

Is PLPV811DBVT pin-compatible with other SOT-23 op-amps?

PLPV811DBVT uses the industry-standard 5-pin SOT-23 (DBV) footprint with pin 1 = OUT, pin 2 = V–, pin 3 = +IN, pin 4 = –IN, pin 5 = V+. While physically compatible with many SOT-23 op-amps, electrical behavior differs significantly - especially in supply current, offset, and EMI response - so direct substitution without circuit validation is not recommended.