STMicroelectronics LMV822IDT

Overview

LMV822IDT from STMicroelectronics is a dual, rail-to-rail output, low-power operational amplifier with shutdown functionality, designed for precision signal conditioning in space-constrained, battery-powered systems. It delivers 5.5 MHz gain bandwidth, 0.8 mV max input offset voltage (at 25°C), 400 µA max supply current per channel at 5 V, and operates across –40°C to +125°C - enabling use in automotive sensor front-ends and portable medical devices.

For engineers reviewing the LMV822IDT datasheet, LMV822IDT pinout, LMV822IDT application, or LMV822IDT equivalent, key selection criteria include its shutdown-enabled ultra-low quiescent current (50 nA), rail-to-rail output swing into 2 kΩ loads (±150 mV from rails), enhanced DC accuracy over temperature (2 mV max Vio across full range), and SO-8 package compatibility with legacy LMV358 layouts.

Technical Context

The LMV822IDT integrates two independent op-amps sharing a common shutdown control (SHDN) pin that places both amplifiers into high-impedance output state while reducing total supply current to ≤50 nA. Its input stage supports common-mode voltages from V_CC– – 0.2 V to V_CC+ – 1 V, enabling ground-sensing capability without phase reversal.

AC performance is stabilized for capacitive loads up to 200 pF in unity-gain follower configuration, with ≥60° phase margin and 1.4–1.9 V/µs slew rate (at 5 V). The device achieves 72–90 dB CMRR and 70–75 dB PSRR across 2.5–5.5 V supply range, supporting accurate amplification in noisy automotive or industrial environments.

Key Specifications

Pinout & Package

LMV822IDT is housed in an SO-8 (Small Outline) package with standard dual op-amp pinout and integrated shutdown control. The exposed pad is not present in SO-8; thermal resistance is 125 °C/W (junction-to-ambient).

Key Features

Applications

Equivalent & Alternatives

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

Compared with LMV358IDR, LMV822IDT provides 5.5× higher bandwidth and 8.75× lower offset voltage - critical for fast, accurate sensor digitization; versus TSV852IST, it adds shutdown control at only +220 µA/channel I_Q penalty, enabling aggressive power-state management.

Availability

LMV822IDT is available at Aetrix Electronics and suitable for automotive signal conditioning, portable medical instrumentation, and industrial battery-powered data loggers requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for LMV822IDT 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 analog, microcontroller, power, and sensor solutions for industrial, automotive, and consumer markets.

The LMV82x series belongs to ST's precision analog portfolio, engineered specifically for high-accuracy, low-voltage signal conditioning in harsh-environment applications - emphasizing automotive-grade reliability, rail-to-rail performance, and shutdown-enabled energy efficiency.

FAQ

What is the maximum capacitive load the LMV822IDT can drive stably in unity-gain buffer configuration?

The LMV822IDT maintains ≥60° phase margin with up to 200 pF capacitive load in unity-gain follower configuration at 5 V supply and 25°C, as verified in Figure 13 of the datasheet. For loads >100 pF, ST recommends using the recommended PCB layout with 10 nF local decoupling and minimizing trace inductance to preserve stability.

Can the SHDN pin be driven directly by a 3.3 V GPIO from an MCU operating at 3.3 V supply?

Yes - the SHDN pin logic thresholds are V_IL ≤ 0.5 V and V_IH ≥ V_CC – 0.5 V. When V_CC = 5 V, V_IH ≥ 4.5 V, so a 3.3 V GPIO cannot reliably assert 'high'. However, with V_CC = 3.3 V, V_IH ≥ 2.8 V, making direct 3.3 V GPIO control fully compatible and electrically safe.

Does the LMV822IDT support true rail-to-rail input operation?

No - the LMV822IDT features rail-to-rail *output* swing but has a limited input common-mode range of V_CC– – 0.2 V to V_CC+ – 1 V. It does *not* accept inputs at the positive rail (V_CC+) or beyond, unlike true RRI op-amps. This design enables robust operation with ground-referenced sensors while maintaining low input bias current.

How does the input offset voltage drift behave over temperature, and is it compensated internally?

The LMV822IDT exhibits a maximum input offset voltage drift of 1 µV/°C over –40°C to +125°C (Table 6), achieved through laser-trimmed input transistor matching - no external compensation required. This drift contributes ≤120 µV additional error across the full temperature range, preserving accuracy in uncalibrated systems.