Texas Instruments LMV842MAX/NOPB

Overview

LMV842MAX/NOPB from Texas Instruments is a dual-channel, CMOS-input, rail-to-rail input/output operational amplifier optimized for high-impedance sensor interface and battery-powered instrumentation. It operates from 2.7 V to 12 V, delivers 4.5 MHz unity-gain bandwidth, draws only 1 mA per channel, and features 500 µV max input offset voltage and 0.3 pA typical input bias current - enabling precision signal conditioning in space-constrained, low-power systems.

For engineers reviewing the LMV842MAX/NOPB datasheet, LMV842MAX/NOPB pinout, LMV842MAX/NOPB application, or LMV842MAX/NOPB equivalent, key selection criteria include its RRIO capability at 3.3 V/5 V supply, ultra-low input bias current for photodiode or pH sensor front-ends, thermal stability across −40°C to +125°C, and compatibility with SC70 (LMV841), VSSOP/SOIC (LMV842), and TSSOP/SOIC (LMV844) package variants.

Technical Context

The LMV842MAX/NOPB implements a CMOS input stage with anti-parallel ESD diodes limiting differential input voltage to ±300 mV, and supports single-supply operation down to 2.7 V with rail-to-rail output swing within 32 mV of rails (at 10 kΩ load, 5 V supply). Its 133 dB open-loop gain and 112 dB CMRR ensure high DC accuracy in closed-loop configurations such as instrumentation amplifiers and active filters.

Designed for low-noise, low-drift analog signal chains, it achieves 20 nV/√Hz input voltage noise at 1 kHz and maintains phase margin ≥67° with 20 pF capacitive load - enabling stable operation driving DAC buffers, anti-aliasing filters, and high-gain transimpedance stages without external compensation.

Key Specifications

Pinout & Package

LMV842MAX/NOPB is packaged in an 8-pin VSSOP (DGK) with body size 3.00 mm × 3.00 mm - suitable for high-density PCB layouts in handheld test equipment and wearable health monitors.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TLV9062IDGKR and OPA2333AIDR, LMV842MAX/NOPB offers wider supply flexibility (2.7–12 V), proven robustness in high-temperature industrial environments, and optimal balance of speed, precision, and power for dual-channel sensor interface - making it preferred for cost-sensitive, wide-voltage, and extended-temperature designs where zero-drift isn't mandatory.

Availability

LMV842MAX/NOPB is available at Aetrix Electronics and suitable for medical diagnostics, portable instrumentation, and industrial sensor modules requiring stable component supply across automotive and industrial temperature grades.

Supply support for LMV842MAX/NOPB 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 for industrial, automotive, and personal electronics markets.

The LMV84x product line was designed specifically for precision, low-power, rail-to-rail op amp applications in battery-operated and high-impedance sensor systems - emphasizing CMOS input performance, wide supply range, and extended temperature reliability.

FAQ

What is the maximum capacitive load drive capability of LMV842MAX/NOPB without external compensation?

The LMV842MAX/NOPB maintains stability with up to 20 pF capacitive load while preserving ≥67° phase margin, as verified in TI's SNOSAT1I datasheet Figure 20. Driving larger loads (e.g., ADC input capacitance >25 pF) requires isolation resistor or feedback capacitor compensation to prevent peaking or oscillation. This behavior is consistent across all LMV84x variants and applies directly to LMV842MAX/NOPB in VSSOP packaging.

Does LMV842MAX/NOPB support true rail-to-rail input common-mode range including the negative rail?

Yes - LMV842MAX/NOPB accepts input voltages from V− – 0.1 V to V+ + 0.1 V, confirmed in Electrical Characteristics tables for 3.3 V, 5 V, and ±5 V supplies. At 5 V supply, this yields –0.2 V to 5.2 V input range, enabling direct interfacing with sensors referenced to ground or slightly negative bias points. This specification is guaranteed for LMV842MAX/NOPB across its full –40°C to +125°C operating range.

Can LMV842MAX/NOPB be used in single-supply 3.3 V systems with 12-bit ADCs?

Yes - LMV842MAX/NOPB delivers rail-to-rail output swing within 32 mV of V+ and 38 mV of V− at 10 kΩ load under 3.3 V supply, providing >3.2 V effective output range. Combined with its 500 µV max input offset, it resolves <0.1% of full-scale ADC input, supporting accurate 12-bit conversion without trimming. This performance is explicitly characterized in LMV842MAX/NOPB's 3.3 V electrical table and validated in typical application circuits.

What is the ESD tolerance of LMV842MAX/NOPB, and how does it impact board-level protection design?

LMV842MAX/NOPB has HBM ESD rating of ±2000 V and CDM rating of ±250 V per JEDEC JESD22-A114 and JESD22-C101. These values indicate robustness during automated handling but do not eliminate need for external TVS diodes in field-deployed systems exposed to >8 kV contact discharge. Board-level protection should follow TI's layout guidelines in SNOSAT1I Section 10, especially for high-impedance sensor inputs connected to LMV842MAX/NOPB.

How does the input bias current of LMV842MAX/NOPB vary with common-mode voltage and temperature?

LMV842MAX/NOPB exhibits <10 pA input bias current across –5 V to +5 V common-mode range at 25°C (Figure 7), rising to <300 pA at 125°C per datasheet Table 6.5–6.7. This variation is CMOS-input intrinsic and remains symmetric between +IN and –IN pins. For pH electrode interfaces requiring <1 pA error, LMV842MAX/NOPB must operate below 85°C and with VCM centered - a constraint explicitly documented for LMV842MAX/NOPB in TI's characterization data.