Texas Instruments LMV342MAX

Overview

LMV342MAX from Texas Instruments is a dual rail-to-rail output CMOS operational amplifier optimized for low-voltage portable applications. It delivers 1 MHz gain bandwidth, 1 V/µs slew rate, 100 µA per amplifier supply current, 29 nV/√Hz input voltage noise at 10 kHz, and operates from 2.7 V to 5.5 V - enabling precision signal conditioning in battery-powered audio, sensing, and monitoring circuits.

For engineers reviewing the LMV342MAX datasheet, LMV342MAX pinout, LMV342MAX application, or LMV342MAX equivalent, key selection considerations include its dual-channel architecture, VSSOP-8 package footprint, rail-to-rail output swing (within 24 mV of rails at 2.7 V), ultra-low 20 fA input bias current, and −40°C to +125°C industrial-plus temperature range.

Technical Context

The LMV342MAX implements a patented Class AB turnaround stage that reduces input offset voltage, high-frequency noise, and quiescent power while preserving slew rate and open-loop gain. Its PMOS input stage enables femtoampere-level input bias current and high input impedance, critical for high-impedance sensor interfaces and precision integrators.

It supports single-supply operation with rail-to-rail output swing and specified performance across 2.7 V–5.5 V, including guaranteed DC parameters (e.g., 0.55 mV typical V_OS at 25°C) and AC characteristics (e.g., 72° phase margin at 100 kΩ load) over the full temperature range.

Key Specifications

Pinout & Package

LMV342MAX is packaged in an 8-pin VSSOP (DGK) with nominal body size 3.00 mm × 3.00 mm, optimized for space-constrained PCB layouts in portable electronics.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MCP6022-E/SN and TSV912IDT, LMV342MAX uniquely balances femtoampere input bias, 125°C operation, and sub-100 µA quiescent current - making it optimal for long-life, high-precision, wide-temperature portable instrumentation where leakage and thermal drift dominate error budgets.

Availability

LMV342MAX is available at Aetrix Electronics and suitable for battery monitoring, portable audio line driving, industrial sensor signal conditioning, and PCMCIA analog interface applications requiring stable component supply and long-term manufacturability.

Supply support for LMV342MAX 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, embedded processing, and connectivity solutions for industrial, automotive, and personal electronics markets.

The LMV34x-N family was designed specifically for low-voltage portable applications demanding ultra-low power, rail-to-rail output, and high-precision performance across extended temperature ranges.

FAQ

What is the maximum operating supply voltage for LMV342MAX?

The LMV342MAX is rated for a maximum supply voltage of 5.5 V across the V+ to V− terminals. Operation above this voltage risks permanent damage per Absolute Maximum Ratings. At 5.5 V, it maintains full rail-to-rail output swing and specified AC performance including 1 MHz GBW and 1 V/µs slew rate - consistent with its design for 3.3 V and Li-ion battery systems.

Does LMV342MAX include a shutdown feature like LMV341-N?

No, LMV342MAX does not include a shutdown pin or function. The shutdown capability is exclusive to the LMV341-N (single-channel) variant. LMV342MAX is a dual-channel device with fixed enable; its supply current remains at 100 µA per amplifier under all operating conditions. This simplifies design for always-on applications but excludes power-gating use cases.

What is the input common-mode voltage range for LMV342MAX?

The LMV342MAX supports an input common-mode voltage range from V− − 0.2 V to V+ − 0.2 V at 2.7 V supply, and from V− − 0.2 V to V+ − 0.2 V at 5 V supply - meeting rail-to-rail input capability only in the sense of extending slightly beyond the rails. However, CMRR ≥50 dB is guaranteed only within 0 V to 1.7 V (2.7 V supply) or 0 V to 4 V (5 V supply), limiting true rail-to-rail input performance.

Can LMV342MAX drive a 600 Ω load in audio applications?

Yes, LMV342MAX can drive a 600 Ω load with measured THD+N of 0.017% at 1 kHz and 1 V_PP output (2.7 V supply). Its output short-circuit current is 20–32 mA sourcing, enabling ±1.2 V swing into 600 Ω. For sustained line-driving, thermal derating should be verified using R_θJA = 235°C/W (VSSOP), especially at elevated ambient temperatures.

Is LMV342MAX pin-compatible with other dual op-amps in VSSOP-8 packages?

LMV342MAX follows standard VSSOP-8 pinout for dual op-amps (OUT A, IN A−, IN A+, V−, IN B+, IN B−, OUT B, V+), matching industry conventions used by TLV2462, MCP6022, and TSV912. However, electrical behavior (e.g., bias current, noise, shutdown) differs - so functional compatibility requires verification against circuit requirements, not just pin alignment.