Texas Instruments LMV821M7-TI

Overview

LMV821M7-TI from Texas Instruments is a single-channel, rail-to-rail output operational amplifier optimized for low-voltage (2.5 V to 5.5 V), low-power systems. It delivers 5 MHz gain-bandwidth, 1.4 V/µs minimum slew rate, and 220 µA quiescent current per amplifier at 2.7 V, with guaranteed 3.5 mV input offset voltage and rail-to-rail swing into 600 Ω loads - enabling precision signal conditioning in space-constrained portable electronics.

For engineers reviewing the LMV821M7-TI datasheet, LMV821M7-TI pinout, LMV821M7-TI application, or LMV821M7-TI equivalent, this page provides verified electrical specifications, SC70-5 package details, real-world use cases in battery-powered communication interfaces, and validated alternative op amps with documented functional trade-offs.

Technical Context

The LMV821M7-TI employs a CMOS input stage with ground-sensing common-mode range (−0.3 V to 4.3 V at 5 V supply) and a robust output stage capable of sourcing 12 mA and sinking 12 mA while maintaining rail-to-rail swing within 160 mV of either rail into 600 Ω. Its 61° phase margin at 2.7 V ensures stable unity-gain operation even with capacitive loads up to 220 pF when paired with external stabilization techniques like pull-up resistors.

Designed for single-supply operation, it achieves 90 dB CMRR and 85 dB PSRR across its full operating temperature range (−40 °C to +85 °C), with input offset drift of only 1 µV/°C - making it suitable for DC-coupled sensor front-ends where thermal stability and supply rejection are critical.

Key Specifications

Pinout & Package

The LMV821M7-TI is housed in an ultra-small SC70-5 surface-mount package (2.0 mm × 2.0 mm × 1.0 mm), optimized for high-density portable PCB layouts.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TLV2461IDBVR and OPA316IDBVR, the LMV821M7-TI offers the lowest quiescent current in SC70-5 while maintaining adequate bandwidth and offset for cost-sensitive portable electronics - making it optimal for battery runtime-critical designs where 5 MHz GBW suffices.

Availability

LMV821M7-TI is available at Aetrix Electronics and suitable for portable audio interfaces, PCMCIA modem transceivers, laptop touchpad controllers, and low-power voltage monitoring circuits requiring stable component supply and long-term manufacturability.

Supply support for LMV821M7-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 amplifiers and low-power signal conditioning solutions.

The LMV821M7-TI belongs to TI's legacy low-voltage op amp portfolio, originally developed by National Semiconductor to address space- and power-constrained portable electronics - emphasizing rail-to-rail output, microamp quiescent current, and SC70 packaging for next-generation mobile devices.

FAQ

What is the maximum capacitive load the LMV821M7-TI can drive without external compensation?

The LMV821M7-TI is stable with capacitive loads up to 220 pF when used in unity-gain configuration, as confirmed in TI's application note AN-397. For heavier loads (e.g., 10 nF), a 20 Ω isolation resistor or 600 Ω pull-up resistor is recommended to maintain phase margin above 60°. This behavior is validated across 2.7 V and 5 V supplies and is documented in the Gain and Phase Margin vs. Frequency plots of the LMV821M7-TI datasheet.

Does the LMV821M7-TI support true rail-to-rail input operation?

No, the LMV821M7-TI features rail-to-rail *output* swing but only ground-sensing input common-mode range (−0.3 V to 4.3 V at 5 V supply). Its inputs do not swing to the positive rail - the upper limit is V+ − 0.7 V. This design enables robust ESD protection and low input bias current (≤100 nA), making it ideal for single-supply sensor interfaces where the signal stays near ground, but unsuitable for applications requiring full input rail coverage.

What is the thermal resistance (θ_JA) of the LMV821M7-TI in SC70-5 package?

The LMV821M7-TI in SC70-5 package has a junction-to-ambient thermal resistance (θ_JA) of 440 °C/W under standard JEDEC conditions (single-layer board, no copper pour). This value assumes minimal PCB copper; adding 1 in² of 2-oz copper on the backside reduces θ_JA to ~220 °C/W. At 220 µA quiescent current and 5 V supply, power dissipation is just 1.1 mW - resulting in negligible temperature rise (<0.5 °C) even in the worst-case θ_JA condition.

Can the LMV821M7-TI operate from a 1.8 V supply?

No, the LMV821M7-TI has a minimum specified supply voltage of 2.5 V per its Absolute Maximum Ratings and Operating Ratings tables. Operation below 2.5 V is not characterized or guaranteed - parameters such as GBW, slew rate, and output swing degrade significantly, and the device may fail to bias correctly. For 1.8 V systems, consider TI's TLV8801 or OPA313 families, which are explicitly rated down to 1.4 V.

Is the LMV821M7-TI pin-compatible with other members of the LMV82x family?

Yes, the LMV821M7-TI (single) shares identical pinout with the LMV822 (dual) in SO-8 and MSOP-8 packages and the LMV824 (quad) in SO-14 and TSSOP-14 packages *only for corresponding channel subsets*. However, the SC70-5 package used by LMV821M7-TI is unique to the single-channel variant - dual and quad versions use larger footprints and cannot be substituted without PCB redesign.