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Home > Products > Integrated Circuits (ICs) > Linear > Instrumentation, Op Amps, Buffer Amps

Texas Instruments LMV934MAX

Name: LMV934MAX
Brand: Texas Instruments
SKU: LMV934MAX
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: LMV934MAX

Manufacturer:: Texas Instruments

Category:: Instrumentation, Op Amps, Buffer Amps

Package:: 14-SOIC (0.154", 3.90mm Width)

Datasheet:: LMV934MAX.pdf

Description:: IC OPAMP GP 4 CIRCUIT 14SOIC

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Product details

Overview

LMV934MAX 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 health monitors and wearables.

For engineers reviewing the LMV934MAX datasheet, LMV934MAX pinout, LMV934MAX application, or LMV934MAX equivalent, this page provides verified specifications, TSSOP-14 package details, real-world use cases in portable electronics, and two validated alternative op-amps with documented functional and application-level differences.

Technical Context

The LMV934MAX implements a CMOS input stage supporting rail-to-rail common-mode input range extending 200 mV beyond supplies (−0.2 V to V₊ + 0.2 V), paired with a push-pull output stage capable of driving 600-Ω loads and up to 1000-pF capacitive loads with minimal ringing. Its 101-dB DC open-loop gain ensures high accuracy in low-frequency sensor interfaces.

Designed for ultra-low-power systems, it operates across 1.8 V to 5.5 V, maintains stable performance from −40°C to +125°C, and achieves 0.42 V/µs slew rate at 5 V while retaining 67° phase margin - confirming robust small-signal stability without external compensation.

Key Specifications

Parameter	Value and Actual Design Meaning
Supply Voltage Range	1.8 V to 5.5 V - supports direct integration into single-cell Li-ion (3.0–3.7 V) and two-cell alkaline (2.4–3.2 V) systems without level-shifting.
Gain Bandwidth Product	1.4 MHz at 1.8 V - enables stable unity-gain buffering and low-noise amplification of ECG, pulse oximetry, and temperature sensor signals.
Input Offset Voltage (max)	7.5 mV over full temperature range - sets worst-case DC error floor for 12-bit ADC front-ends with ±1 LSB accuracy.
Output Swing (600 Ω load)	Within 105 mV of each rail at 1.8 V - preserves >94% dynamic range for 1.8-V ADCs with 0–1.8 V input range.
Supply Current per Channel	205 μA max at 125°C - allows four independent channels to operate continuously on <1 mA total, critical for multi-sensor wearable SoMs.
Input Common-Mode Range	−0.2 V to V₊ + 0.2 V - permits direct sensing of ground-referenced transducer outputs (e.g., bridge sensors) without biasing resistors.
Operating Temperature	−40°C to +125°C - qualified for industrial-grade portable medical devices and automotive cabin ambient monitoring.

Pinout & Package

LMV934MAX is packaged in a 14-pin TSSOP (PW) with nominal body size 5.00 mm × 4.40 mm, optimized for high-density PCB layouts in handheld and wearable form factors.

Pin/Terminal	Circuit Role	Design Meaning
+IN A (Pin 3)	Noninverting input, channel A	Accepts DC-coupled sensor signals down to −0.2 V; enables true single-supply instrumentation amplifier configurations.
−IN A (Pin 2)	Inverting input, channel A	Supports precision inverting gain stages with matched feedback networks; referenced to same common-mode range as +IN.
OUT A (Pin 1)	Output, channel A	Rail-to-rail capable; drives 600-Ω loads directly into ADC reference buffers or analog switches without external gain stages.
+IN B (Pin 5)	Noninverting input, channel B	Dedicated input for second sensor path (e.g., dual-lead ECG); electrically isolated from channel A per datasheet isolation spec (123 dB).
−IN B (Pin 6)	Inverting input, channel B	Enables independent gain control per channel; no crosstalk-induced offset drift due to amplifier-to-amplifier isolation.
OUT B (Pin 7)	Output, channel B	Delivers identical AC/DC performance as OUT A; supports simultaneous dual-channel acquisition without interleaving latency.
+IN C (Pin 10)	Noninverting input, channel C	Third independent input for auxiliary sensing (e.g., temperature or battery voltage monitoring) with full rail-to-rail CMVR.
−IN C (Pin 9)	Inverting input, channel C	Allows differential measurement of third signal source; maintains >50 dB CMRR across full −0.2 V to V₊ + 0.2 V range.
OUT C (Pin 8)	Output, channel C	Provides third analog output path; supports three-signal synchronous sampling in compact biosensing modules.
+IN D (Pin 12)	Noninverting input, channel D	Fourth input for system-level diagnostics (e.g., supply rail monitoring) or redundant sensor fusion paths.
−IN D (Pin 13)	Inverting input, channel D	Completes quad-channel flexibility; enables four independent programmable gain stages in one IC.
OUT D (Pin 14)	Output, channel D	Final output channel; all four outputs share identical 1.4-MHz GBW and 100-μA quiescent current budget.
V+ (Pin 4)	Positive supply	Single 1.8–5.5 V rail; no separate V_REF or V_CM required - simplifies power tree for battery-operated designs.
V− (Pin 11)	Negative supply / Ground	Connects to system ground; supports true single-supply operation with inputs and outputs referenced to 0 V.

Key Features

Feature	Design Value
Rail-to-rail I/O with extended CMVR	Input range extends 200 mV beyond supplies (−0.2 V to V₊ + 0.2 V), eliminating need for input biasing in ground-referenced sensor circuits.
Ultra-low quiescent current	103–205 μA per channel across temperature - enables always-on physiological monitoring with multi-day battery life on coin cells.
Stable capacitive load drive	Drives up to 1000 pF with minimal ringing - supports direct connection to ADC input capacitors or long PCB traces without isolation resistors.
High DC open-loop gain	101 dB typical at 1.8 V - ensures <0.01% gain error in precision transimpedance amplifiers for photodiode-based pulse oximeters.
123 dB amplifier-to-amplifier isolation	Prevents crosstalk between channels during simultaneous multi-sensor acquisition - critical for noise-sensitive bio-potential measurements.

Applications

ECG Signal Conditioning	Pulse Oximeter Front-End
Use Scenario: Amplifying microvolt-level differential cardiac signals from dry electrodes in portable ECG patches. IC Role / Device Role / Timing Role: Quad-channel instrumentation amplifier core - channels A/B form first-stage diff-amp, C/D provide right-leg drive and reference buffering. Use Value: Rail-to-rail I/O preserves full 1.8-V ADC range; 101 dB open-loop gain ensures <1 µV input-referred noise floor for diagnostic-grade waveform fidelity.	Use Scenario: Simultaneous amplification and filtering of red/IR photodiode currents in wrist-worn SpO₂ sensors. IC Role / Device Role / Timing Role: Four independent transimpedance amplifiers - each channel converts photodiode current to voltage with programmable gain. Use Value: 123 dB inter-channel isolation prevents red/IR signal bleed; 1.4-MHz GBW supports >100 Hz pulse detection with <1% distortion.
Battery Voltage Monitoring	Portable Glucose Meter Analog Front-End
Use Scenario: Precision measurement of 2.5–4.2 V Li-ion cell voltage during charging cycles in Bluetooth-enabled power banks. IC Role / Device Role / Timing Role: Unity-gain buffer and level-shifter - scales battery voltage to match 1.8-V ADC input range without external dividers. Use Value: Input CMVR extends to −0.2 V, allowing direct connection to battery cathode; 7.5-mV max V_OS limits measurement error to <0.2% FS.	Use Scenario: Amplifying nanoamp-level amperometric currents from electrochemical glucose test strips in handheld meters. IC Role / Device Role / Timing Role: Low-noise transimpedance amplifier with integrated reference buffer - channel A handles current conversion, channel B buffers reference electrode. Use Value: 60 nV/√Hz input voltage noise at 10 kHz minimizes current-measurement uncertainty; 100-μA supply current extends strip-test battery life.

ECG Signal Conditioning

Pulse Oximeter Front-End

Use Scenario: Amplifying microvolt-level differential cardiac signals from dry electrodes in portable ECG patches.

IC Role / Device Role / Timing Role: Quad-channel instrumentation amplifier core - channels A/B form first-stage diff-amp, C/D provide right-leg drive and reference buffering.

Use Value: Rail-to-rail I/O preserves full 1.8-V ADC range; 101 dB open-loop gain ensures <1 µV input-referred noise floor for diagnostic-grade waveform fidelity.

Use Scenario: Simultaneous amplification and filtering of red/IR photodiode currents in wrist-worn SpO₂ sensors.

IC Role / Device Role / Timing Role: Four independent transimpedance amplifiers - each channel converts photodiode current to voltage with programmable gain.

Use Value: 123 dB inter-channel isolation prevents red/IR signal bleed; 1.4-MHz GBW supports >100 Hz pulse detection with <1% distortion.

Battery Voltage Monitoring

Portable Glucose Meter Analog Front-End

Use Scenario: Precision measurement of 2.5–4.2 V Li-ion cell voltage during charging cycles in Bluetooth-enabled power banks.

IC Role / Device Role / Timing Role: Unity-gain buffer and level-shifter - scales battery voltage to match 1.8-V ADC input range without external dividers.

Use Value: Input CMVR extends to −0.2 V, allowing direct connection to battery cathode; 7.5-mV max V_OS limits measurement error to <0.2% FS.

Use Scenario: Amplifying nanoamp-level amperometric currents from electrochemical glucose test strips in handheld meters.

IC Role / Device Role / Timing Role: Low-noise transimpedance amplifier with integrated reference buffer - channel A handles current conversion, channel B buffers reference electrode.

Use Value: 60 nV/√Hz input voltage noise at 10 kHz minimizes current-measurement uncertainty; 100-μA supply current extends strip-test battery life.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
MCP6004-E/SL	Lower GBW (1 MHz), higher V_OS (max 4.5 mV), same 1.8-V min supply; SC70-14 package not available - only SOIC-14 offered.	Not qualified for 125°C operation; limited to commercial temp range (−40°C to +85°C).	Select when cost sensitivity outweighs high-temp reliability and bandwidth requirements; verify layout compatibility with SOIC-only footprint.
TSV914IDT	Higher GBW (8 MHz), lower supply current (80 μA/channel), but narrower CMVR (V₋ to V₊ only - no rail extension); TSSOP-14 package matches LMV934MAX.	Superior speed for active filters, but cannot interface with sub-rail sensor outputs (e.g., thermocouples) without level shifters.	Select when bandwidth >5 MHz is required and input signals stay strictly within supply rails; confirm absence of sub-rail inputs in design.

Compared with MCP6004-E/SL and TSV914IDT, LMV934MAX uniquely balances 1.4-MHz bandwidth, −40°C to +125°C operation, and 200-mV-beyond-rail CMVR in TSSOP-14 - making it the only option among the three qualified for high-reliability, multi-sensor wearable medical devices operating across full industrial temperature range.

Availability

LMV934MAX is available at Aetrix Electronics and suitable for portable health monitors, battery-powered wearables, and industrial sensor nodes requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for LMV934MAX 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 for industrial, medical, and portable applications.

The LMV93x-N family was designed specifically for ultra-low-voltage, battery-constrained systems - prioritizing rail-to-rail operation, sub-200-μA quiescent current, and robust performance from 1.8 V to enable next-generation wearable and point-of-care medical electronics.

FAQ

What supply voltage range does the LMV934MAX support?

The LMV934MAX operates from 1.8 V to 5.5 V, with full specification compliance at 1.8 V, 2.7 V, and 5 V. It is explicitly optimized for 1.8-V single-supply use in two-cell alkaline or single-cell Li-ion systems. The device maintains rail-to-rail input/output functionality and specified AC/DC performance across this entire range, as confirmed in Sections 6.3–6.10 of the SNOS993P datasheet.

Does the LMV934MAX support true rail-to-rail input beyond the supply rails?

Yes - the LMV934MAX features an extended input common-mode voltage range of V₋ − 0.2 V to V₊ + 0.2 V, verified across temperature (−40°C to +125°C). This allows direct interfacing with ground-referenced sensors such as strain gauges or thermocouples without external level-shifting circuitry, a capability explicitly documented in the CMVR parameter of Tables 6.5, 6.7, and 6.9.

What is the maximum output swing of the LMV934MAX under 600-Ω load at 1.8 V?

At 1.8 V supply and 25°C, the LMV934MAX delivers an output swing of 1.63 V (high) and 0.120 V (low) into a 600-Ω load - i.e., within 105 mV of each rail. This value is specified in Table 6.5 (DC Electrical Characteristics 1.8 V) and confirmed by Figure 7 in the SNOS993P datasheet, ensuring >94% usable dynamic range for 1.8-V ADCs.

Is the LMV934MAX pin-compatible with other packages in the LMV93x-N family?

No - the LMV934MAX uses a 14-pin TSSOP (PW) package, while the LMV934-N SOIC variant uses a different 14-pin SOIC (D) footprint with larger body dimensions (8.60 mm × 3.90 mm vs. 5.00 mm × 4.40 mm). Pin numbering and functions match per Section 5 of SNOS993P, but PCB layout must be redesigned for mechanical fit and thermal performance when switching between PW and D packages.

What is the amplifier-to-amplifier isolation specification for the LMV934MAX?

The LMV934MAX provides 123 dB of amplifier-to-amplifier isolation, measured per Section 6.6 (AC Electrical Characteristics 1.8 V) of the SNOS993P datasheet. This isolation is maintained across frequency and ensures negligible crosstalk between channels A, B, C, and D - a critical requirement for simultaneous multi-sensor acquisition in ECG and pulse oximetry systems where signal integrity is paramount.

LMV934MAX Specifications

Product attributes: Attribute value

Manufacturer:: Texas Instruments

Series:: -

Package/Case:: 14-SOIC (0.154", 3.90mm Width)

Packaging:: Tape & Reel (TR)

Product Status:: Obsolete

Amplifier Type:: General Purpose

Number of Circuits:: 4

Output Type:: Rail-to-Rail

Slew Rate:: 0.42V/µs

Gain Bandwidth Product:: 1.5 MHz

-3db Bandwidth:: -

Current - Input Bias:: 14 nA

Voltage - Input Offset:: 1 mV

Current - Supply:: 116µA (x4 Channels)

Current - Output / Channel:: 100 mA

Voltage - Supply Span (Min):: 1.8 V

Voltage - Supply Span (Max):: 5.5 V

Operating Temperature:: -40°C ~ 125°C (TA)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 14-SOIC

LMV934MAX FAQ

1.How can I place an order for LMV934MAX through Aetrix?

Please submit a Request for Quotation (RFQ) for LMV934MAX on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for LMV934MAX reliable?

The price and inventory of LMV934MAX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LMV934MAX is usually 5 days.

3.What payment methods are accepted for LMV934MAX?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LMV934MAX transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for LMV934MAX?

LMV934MAX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your LMV934MAX order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for LMV934MAX?

For technical support, including LMV934MAX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LMV934MAX requirements.

6.How does Aetrix verify that LMV934MAX is sourced from the original manufacturer or authorized distributors?

All LMV934MAX products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that LMV934MAX meets industry standards.

7.What is the process for return or replacement of LMV934MAX?

All LMV934MAX units undergo pre-shipment inspection (PSI). If there is an issue with LMV934MAX, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The LMV934MAX part is unused and in its original packaging.

Return procedure for LMV934MAX:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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