Texas Instruments LMV712MM

Overview

LMV712MM from Texas Instruments is a dual rail-to-rail input/output operational amplifier with independent shutdown control per channel, designed for low-voltage portable and RF power amplifier control applications. It delivers 5 MHz gain-bandwidth, 5 V/µs slew rate, 20 nV/√Hz input voltage noise, 1.22 mA/channel supply current, and operates from 2.7 V to 5.5 V.

For engineers reviewing the LMV712MM datasheet, LMV712MM pinout, LMV712MM application, or LMV712MM equivalent, this device is selected for precision analog signal conditioning in space-constrained, battery-powered systems requiring fast turnon (2.2 µs), low-noise amplification, and glitch-free output recovery from shutdown.

Technical Context

The LMV712MM employs parallel NMOS and PMOS input differential pairs to achieve rail-to-rail input operation across the full common-mode range, with internal logic dynamically allocating bias current between stages based on V_CM. Its offset voltage exhibits a crossover point at 1.4 V above V−, requiring careful signal placement in high-accuracy designs.

Each channel features an independent shutdown pin that reduces supply current to ≤1.5 µA and forces output to V−; turnon is glitch-free with smooth ramping, critical for GSM PA control loops. The output stage uses a PMOS/NPN configuration enabling rail-to-rail swing into loads up to 200 pF without oscillation in unity-gain configuration.

Key Specifications

Pinout & Package

The LMV712MM is packaged in a 10-pin VSSOP (DGS) package measuring 3.0 mm × 3.0 mm, optimized for high-density PCB layouts in portable RF modules.

Key Features

Applications

Equivalent & Alternatives

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

Compared with LMV712MM, LMV722MM offers identical AC performance without shutdown control, while TLV272IDGKR trades bandwidth and precision for lower cost and smaller size - making LMV712MM uniquely suited for RF PA control where glitch-free enable timing and per-channel power gating are mandatory.

Availability

LMV712MM is available at Aetrix Electronics and suitable for cellular phone front-ends, wireless LAN transceivers, and portable radio systems requiring stable component supply with guaranteed long-term manufacturability.

Supply support for LMV712MM 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, with deep expertise in precision amplifiers and RF infrastructure components.

The LMV712MM belongs to TI's low-power, rail-to-rail op-amp product line engineered specifically for battery-operated portable electronics and RF power control applications demanding speed, noise performance, and intelligent power management.

FAQ

What is the maximum capacitive load the LMV712MM can drive without external compensation?

The LMV712MM can drive up to 200 pF in unity-gain configuration without oscillation, as verified in TI's characterization data. This capability eliminates the need for isolation resistors when interfacing directly with power amplifier gate nodes or filter capacitors in RF front-end designs. Exceeding 200 pF requires external R_ISO compensation per Figure 32 in the LMV712MM datasheet to maintain phase margin above 60°.

Does the LMV712MM support true single-supply operation from 2.7 V?

Yes, the LMV712MM is fully specified for 2.7 V to 5.5 V operation with rail-to-rail input and output swing. At 2.7 V, it delivers ≥2.62 V output high and ≤0.15 V output low into 10 kΩ, and maintains 5 MHz GBW and 5 V/µs slew rate. Input common-mode range extends from V− −0.2 V to V+ +0.3 V, enabling direct connection to sensors or DACs operating near ground or supply rails.

How does the LMV712MM's shutdown feature behave during power-up sequences?

During power-up, the LMV712MM outputs remain in high-impedance state until both supply rails stabilize and shutdown pins exceed their enable threshold (2.4 V min at 2.7 V supply). Once enabled, outputs ramp smoothly with no overshoot or glitch - a key requirement for GSM PA control. If SDA/SDB are held low during power-up, outputs stay at V− until pins are actively pulled high, preventing uncontrolled PA activation.

Is the LMV712MM pin-compatible with other TI dual op-amps in VSSOP-10 packages?

No - the LMV712MM has a unique pinout optimized for independent shutdown control (pins 5 and 6), differing from standard dual op-amp VSSOP-10 layouts like the TLV272 or OPA2340. Substitution requires PCB redesign. Pin mapping is fixed per TI's DGS package drawing: OUTA, –INA, +INA, V−, SDA, SDB, +INB, –INB, OUTB, V+.

What is the typical input offset voltage drift over temperature for the LMV712MM?

The LMV712MM exhibits a maximum input offset voltage of 3.2 mV across –40°C to 85°C, implying a worst-case drift of approximately 0.035 mV/°C relative to its 25°C value (0.4–3 mV). This drift is dominated by process variation rather than linear thermal coefficient; actual units typically show <1.5 mV total excursion. For precision PA bias control, system-level calibration at end-of-line compensates for unit-to-unit variation.