Texas Instruments LMV934MTX

Overview

LMV934MTX from Texas Instruments is a quad rail-to-rail input/output operational amplifier optimized for 1.8-V single-supply operation, delivering 1.4-MHz gain bandwidth, 100-μA per-channel supply current, and output swing within 105 mV of rails under 600-Ω load - enabling precision signal conditioning in space-constrained battery-powered systems such as wearable health monitors.

For engineers reviewing the LMV934MTX datasheet, LMV934MTX pinout, LMV934MTX application, or LMV934MTX equivalent, key selection criteria include its −40°C to +125°C operating range, 200-mV beyond-rail input common-mode capability, ultra-low power consumption at 1.8 V, and compatibility with TSSOP-14 packaging for high-density portable PCB layouts.

Technical Context

The LMV934MTX implements a CMOS input stage with rail-to-rail input common-mode range extending 200 mV beyond V− and V+, supporting true single-supply operation down to 1.8 V. Its output stage uses complementary push-pull architecture to achieve rail-to-rail swing with 600-Ω load while maintaining stability driving up to 1000-pF capacitive loads.

Designed for low-voltage precision amplification, it features 101-dB DC open-loop gain, 77–90-dB CMRR across temperature, and 75–100-dB PSRR - ensuring robust performance in noisy portable environments where supply rejection and input offset stability are critical for sensor front-ends and battery monitoring circuits.

Key Specifications

Pinout & Package

TSSOP-14 package (5.00 mm × 4.40 mm body size), thermally enhanced for compact portable PCBs; pin-compatible with SOIC-14 but with 60% smaller footprint and improved thermal resistance (R_θJA = 94.4°C/W).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar quad rail-to-rail op-amp applications.

Compared with MCP6004-E/ST and TSV914IDT, the LMV934MTX uniquely balances 1.4-MHz bandwidth, 100-μA/channel quiescent current, and 125°C qualification - making it optimal for thermally demanding, battery-limited medical and industrial edge sensors where both precision and endurance matter.

Availability

LMV934MTX is available at Aetrix Electronics and suitable for wearable health monitors, portable diagnostic devices, and industrial battery management systems requiring stable component supply across extended temperature ranges and multi-year production cycles.

Supply support for LMV934MTX 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 chain solutions.

The LMV93x-N family was designed specifically for battery-powered portable electronics - emphasizing ultra-low voltage operation (1.8 V), rail-to-rail functionality, and miniature packaging to enable next-generation wearables and handheld medical devices.

FAQ

What is the maximum operating temperature for the LMV934MTX?

The LMV934MTX is rated for continuous operation from −40°C to +125°C, with full electrical specifications guaranteed across this range. This makes it suitable for applications exposed to elevated ambient temperatures, such as automotive cabin modules or sterilized medical devices. The device's thermal metrics - including R_θJA = 94.4°C/W in TSSOP-14 - ensure reliable junction temperature control even under sustained load. LMV934MTX maintains specified gain, offset, and output swing performance throughout this full industrial temperature range.

Does the LMV934MTX support true single-supply operation below 2.0 V?

Yes, the LMV934MTX is fully specified and characterized for operation at 1.8 V, with all key parameters - including gain bandwidth (1.4 MHz), input offset voltage (≤7.5 mV), and output swing (within 105 mV of rails) - guaranteed at this minimum supply. Its rail-to-rail input stage accepts common-mode voltages 200 mV beyond V− and V+, enabling direct interfacing with unipolar sensors and references. LMV934MTX does not require dual supplies or level-shifting circuitry when used with 1.8-V microcontrollers or ADCs.

Can the LMV934MTX drive a 1000-pF capacitive load without compensation?

Yes, the LMV934MTX is explicitly characterized to drive up to 1000-pF capacitive loads with minimal ringing or instability, as confirmed in TI's datasheet Figure 21–26 and AC Electrical Characteristics section. This capability eliminates the need for series isolation resistors when buffering ADC inputs, long PCB traces, or LCD drivers. For optimal stability, TI recommends using local 0.1-μF ceramic + 2.2-μF bulk decoupling at the V+ pin. LMV934MTX maintains ≥67° phase margin under these conditions.

What is the typical input bias current of the LMV934MTX at room temperature?

The LMV934MTX exhibits a typical input bias current of 15–35 nA at 25°C, with a maximum of 50 nA across the full −40°C to +125°C temperature range. This low bias current minimizes voltage errors in high-impedance sensor interfaces, such as photodiode transimpedance amplifiers or pH electrode buffers. The input stage uses CMOS technology to achieve this performance, and bias current remains stable across supply voltages from 1.8 V to 5.5 V. LMV934MTX's input offset current is similarly low (max 40 nA), reducing net error in differential configurations.

Is the LMV934MTX pin-compatible with other packages in the LMV93x-N family?

No - the LMV934MTX is offered exclusively in the TSSOP-14 package (5.00 mm × 4.40 mm). While electrically identical to the SOIC-14 variant (LMV934MX), the TSSOP-14 has different pad layout, thermal vias, and mechanical dimensions; direct PCB replacement requires layout revision. The LMV934MTX shares pin functions with LMV934MX (e.g., Pin 1 = OUT A, Pin 4 = V−), but solder mask and footprint geometry differ. LMV934MTX is not pin-compatible with dual-channel LMV932 or single-channel LMV931 packages.