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

Texas Instruments LMV934IDRG4

Name: LMV934IDRG4
Brand: Texas Instruments
SKU: LMV934IDRG4
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: LMV934IDRG4

Manufacturer:: Texas Instruments

Category:: Instrumentation, Op Amps, Buffer Amps

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

Datasheet:: LMV934IDRG4.pdf

Description:: IC OPAMP GP 4 CIRCUIT 14SOIC

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Product details

Overview

LMV934IDRG4 from Texas Instruments is a quad rail-to-rail input/output operational amplifier optimized for 1.8-V to 5-V single-supply operation. It delivers 1.4 MHz gain bandwidth, 100 μA per amplifier supply current, 4 mV max input offset voltage, and rail-to-rail output swing (80 mV from rails at 600 Ω load), enabling precision signal conditioning in battery-powered industrial and automotive sensor interfaces.

For engineers reviewing the LMV934IDRG4 datasheet, LMV934IDRG4 pinout, LMV934IDRG4 application, or LMV934IDRG4 equivalent, key selection criteria include its –40°C to 125°C operating range, SOIC-14 package compatibility, low-voltage rail-to-rail performance, and suitability for low-power analog front-ends in energy metering and portable audio systems.

Technical Context

The LMV934IDRG4 employs a CMOS input stage with Class AB output stage, supporting rail-to-rail input common-mode range extending 200 mV beyond supply rails and rail-to-rail output swing under load. Its internal architecture enables stable operation with capacitive loads up to 1000 pF while maintaining ≥67° phase margin.

It operates across 1.8 V to 5 V supply range with specified performance at all voltages: input offset voltage ≤7.5 mV (full temperature range), CMRR ≥55 dB over wide common-mode range, and open-loop gain ≥75 dB driving 2 kΩ. Quiescent current remains tightly controlled at 103–230 μA per channel depending on supply voltage.

Key Specifications

Parameter	Value and Actual Design Meaning
Supply Voltage Range	1.8 V to 5 V - supports single-cell Li-ion and two-cell alkaline/battery systems without level shifting.
Gain Bandwidth Product	1.4 MHz - enables stable unity-gain buffering and low-frequency filtering up to ~100 kHz with adequate phase margin.
Input Offset Voltage (max)	7.5 mV - ensures <±0.5% error in 12-bit ADC reference buffers or sensor amplification at 1 V full-scale.
Supply Current per Channel	103 μA @ 1.8 V - allows four-channel operation at <420 μA total, critical for always-on battery monitoring circuits.
Output Swing (600 Ω load)	80 mV from rails - preserves >90% dynamic range in 1.8-V systems, maximizing SNR in low-voltage data acquisition.
Common-Mode Input Range	VCC− −0.2 V to VCC+ +0.2 V - accepts inputs beyond supply rails, simplifying level translation in mixed-supply systems.
Operating Temperature	–40°C to 125°C - qualified for under-hood automotive and industrial utility metering environments.

Pinout & Package

LMV934IDRG4 is housed in a 14-pin SOIC (D) package with standard 1.27-mm pitch, compatible with automated assembly and legacy PCB footprints. Thermal resistance θ_JA = 86°C/W enables operation at full rating without forced airflow in compact enclosures.

Pin/Terminal	Circuit Role	Design Meaning
1	1OUT	Amplifier A output - drives external load directly; rail-to-rail swing supports full 1.8-V headroom.
2	1IN−	Inverting input of Amp A - high-impedance CMOS node; bias current <75 nA minimizes resistor-induced errors.
3	1IN+	Non-inverting input of Amp A - matched to Pin 2; common-mode range extends beyond rails for flexible referencing.
4	VCC+	Positive supply rail - connects to main system VDD (1.8–5 V); decoupling capacitor required at pin.
5	2IN+	Non-inverting input of Amp B - electrically isolated from other channels; amplifier-to-amplifier isolation >123 dB.
6	2IN−	Inverting input of Amp B - identical electrical characteristics to Pins 2 and 3; supports differential or single-ended configs.
7	2OUT	Amplifier B output - independent output stage; no crosstalk impact on Amp A performance per datasheet test.
8	VCC−	Negative supply rail (GND in single-supply use) - return path for all four amplifiers; low-impedance ground plane essential.
9	3IN+	Non-inverting input of Amp C - shares same process and layout as Pins 3/5; matched offset and drift across channels.
10	3IN−	Inverting input of Amp C - supports instrumentation-grade configurations when paired with external resistors.
11	3OUT	Amplifier C output - capable of sourcing/sinking >15 mA at 2.7 V, sufficient for driving LEDs or small MOSFET gates.
12	4IN−	Inverting input of Amp D - fully characterized for AC/DC performance; THD <0.023% at 1 kHz, 1 V_p-p.
13	4IN+	Non-inverting input of Amp D - enables simultaneous multi-channel sensing (e.g., 4-phase motor current monitoring).
14	4OUT	Amplifier D output - completes quad configuration; all outputs specified for rail-to-rail swing into 600 Ω or 2 kΩ.

Key Features

Feature	Design Value
Rail-to-rail I/O	Enables full utilization of 1.8-V supply range - eliminates need for dual supplies in portable sensor nodes.
100 μA/channel quiescent current	Supports always-on battery monitoring with <1 μA standby when combined with enable logic (via external circuitry).
1.4-MHz GBW at 1.8 V	Permits stable active filtering (e.g., anti-aliasing) for 100-kSPS SAR ADCs without phase lag degradation.
200-mV beyond-rail VICR	Allows direct connection to DAC outputs or transducer bridges biased outside supply rails without clamping diodes.
–40°C to 125°C operation	Qualified for automotive engine control modules and smart grid metering where ambient extremes exceed commercial grade.
SOIC-14 footprint	Provides drop-in replacement path for legacy op-amps (e.g., TL074, LM324) in existing industrial PCB layouts.

Applications

Industrial Sensor Interface	Automotive Cabin Monitoring
Use Scenario: Amplifying low-level signals from RTD, thermistor, or strain gauge sensors in utility meters and PLC analog input modules. IC Role / Device Role / Timing Role: Precision DC-coupled signal conditioner with rail-to-rail output driving 12-bit SAR ADC reference input. Use Value: 7.5-mV max V_IO and 55-dB CMRR ensure <0.1% measurement error across –25°C to 85°C ambient without calibration.	Use Scenario: Signal conditioning for CO₂, humidity, and occupancy sensors in HVAC control units inside vehicle cabins. IC Role / Device Role / Timing Role: Quad-channel buffer and level shifter interfacing MEMS sensors to 3.3-V microcontroller ADCs. Use Value: 103-μA/channel current and 125°C rating allow continuous operation in sealed, non-ventilated dashboard enclosures.
Portable Audio Line Driver	Battery Voltage Monitor
Use Scenario: Driving stereo headphone outputs or line-level signals in PDAs, Bluetooth speakers, and USB-C audio adapters. IC Role / Device Role / Timing Role: Low-noise (60 nV/√Hz), low-THD (<0.023%) output driver stage with rail-to-rail swing. Use Value: 80-mV rail margin at 1.8 V preserves >95% dynamic range for 16-bit audio playback without clipping artifacts.	Use Scenario: Real-time monitoring of Li-ion cell voltage during charge/discharge cycles in power banks and medical devices. IC Role / Device Role / Timing Role: High-impedance voltage follower feeding precision voltage reference to microcontroller ADC. Use Value: 75-nA max input bias current prevents loading of high-resistance voltage divider networks used in multi-cell packs.

Industrial Sensor Interface

Automotive Cabin Monitoring

Use Scenario: Amplifying low-level signals from RTD, thermistor, or strain gauge sensors in utility meters and PLC analog input modules.

IC Role / Device Role / Timing Role: Precision DC-coupled signal conditioner with rail-to-rail output driving 12-bit SAR ADC reference input.

Use Value: 7.5-mV max V_IO and 55-dB CMRR ensure <0.1% measurement error across –25°C to 85°C ambient without calibration.

Use Scenario: Signal conditioning for CO₂, humidity, and occupancy sensors in HVAC control units inside vehicle cabins.

IC Role / Device Role / Timing Role: Quad-channel buffer and level shifter interfacing MEMS sensors to 3.3-V microcontroller ADCs.

Use Value: 103-μA/channel current and 125°C rating allow continuous operation in sealed, non-ventilated dashboard enclosures.

Portable Audio Line Driver

Battery Voltage Monitor

Use Scenario: Driving stereo headphone outputs or line-level signals in PDAs, Bluetooth speakers, and USB-C audio adapters.

IC Role / Device Role / Timing Role: Low-noise (60 nV/√Hz), low-THD (<0.023%) output driver stage with rail-to-rail swing.

Use Value: 80-mV rail margin at 1.8 V preserves >95% dynamic range for 16-bit audio playback without clipping artifacts.

Use Scenario: Real-time monitoring of Li-ion cell voltage during charge/discharge cycles in power banks and medical devices.

IC Role / Device Role / Timing Role: High-impedance voltage follower feeding precision voltage reference to microcontroller ADC.

Use Value: 75-nA max input bias current prevents loading of high-resistance voltage divider networks used in multi-cell packs.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
LMV934IDR	Same silicon die, identical electrical specs, SOIC-14 package; differs only in tape-and-reel packaging (2500 pcs vs. 2500 pcs) and RoHS compliance marking (G4 suffix denotes green/RoHS-compliant finish).	No functional difference; both rated –40°C to 125°C and pin-compatible.	Select LMV934IDR if RoHS exemption documentation is not required; otherwise LMV934IDRG4 meets strict Pb-free requirements.
TLV2464CDR	Higher supply current (550 μA/channel), wider GBW (6.4 MHz), but higher V_IO (2 mV typ, 6 mV max) and limited 2.7–6 V supply range - not usable at 1.8 V.	Suitable for higher-speed, higher-power applications (e.g., active filters >100 kHz) but incompatible with 1.8-V battery systems.	Choose TLV2464CDR only when speed outweighs power constraints; LMV934IDRG4 remains optimal for ultra-low-power 1.8-V designs.

Compared with LMV934IDR, LMV934IDRG4 offers identical performance with certified RoHS/Green compliance; versus TLV2464CDR, it trades bandwidth and drive strength for 4.5× lower quiescent current and true 1.8-V operability - making it the sole choice for energy-constrained, low-voltage quad-amplifier roles.

Availability

LMV934IDRG4 is available at Aetrix Electronics and suitable for industrial sensor interface, automotive cabin monitoring, and portable audio line driver applications requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for LMV934IDRG4 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 consumer markets.

The LMV93x product line was designed specifically for low-voltage, low-power operational amplifier applications - targeting battery-powered and energy-efficient systems operating from 1.8 V to 5 V with rail-to-rail input/output capability.

FAQ

What is the maximum operating temperature for LMV934IDRG4?

The LMV934IDRG4 is characterized for continuous operation from –40°C to 125°C ambient temperature. This full industrial/automotive grade rating is confirmed in the Recommended Operating Conditions table of the SLOS441G datasheet, and thermal design must account for θ_JA = 86°C/W in SOIC-14 package to avoid exceeding 150°C junction limit.

Does LMV934IDRG4 support true 1.8-V operation with rail-to-rail output?

Yes, LMV934IDRG4 is fully specified at 1.8 V: output swings to within 80 mV of each rail into 600 Ω, input common-mode range extends 200 mV beyond rails, and gain bandwidth remains 1.4 MHz. All key parameters - including supply current (103 μA/channel), V_IO (≤7.5 mV), and CMRR (≥55 dB) - are guaranteed across the full –40°C to 125°C range at 1.8 V.

Is LMV934IDRG4 pin-compatible with standard quad op-amps like LM324?

No, LMV934IDRG4 uses a different pinout than LM324: Pin 1 is 1OUT (not V_CC), Pin 4 is V_CC+, Pin 8 is V_CC− (GND), and Pin 14 is 4OUT. While both are SOIC-14, direct substitution requires PCB layout modification. LMV934IDRG4 matches the pinout of other LMV93x family members (e.g., LMV934IDR) but not legacy bipolar op-amps.

What is the typical input bias current of LMV934IDRG4?

The typical input bias current of LMV934IDRG4 is 15 nA at 25°C and rises to 75 nA across the full –40°C to 125°C temperature range, as specified in the Electrical Characteristics tables for V_CC = 1.8 V, 2.7 V, and 5 V. This low bias current minimizes voltage errors in high-impedance sensor interfaces using MΩ-range feedback networks.

Why is LMV934IDRG4 marked 'Not Recommended for New Designs'?

TI classifies LMV934IDRG4 as 'Not Recommended for New Designs' (NRND) due to newer alternatives like TLV9004 offering improved specs (lower noise, higher GBW, smaller packages) - not because of reliability or obsolescence. LMV934IDRG4 remains in active production per TI's packaging addendum and is fully supported for existing designs requiring its specific 1.8-V rail-to-rail performance and SOIC-14 footprint.

LMV934IDRG4 Specifications

Product attributes: Attribute value

Manufacturer:: Texas Instruments

Series:: LMV®

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:: 15 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 V

Operating Temperature:: -40°C ~ 125°C

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 14-SOIC

LMV934IDRG4 FAQ

1.How can I place an order for LMV934IDRG4 through Aetrix?

Please submit a Request for Quotation (RFQ) for LMV934IDRG4 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 LMV934IDRG4 reliable?

The price and inventory of LMV934IDRG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LMV934IDRG4 is usually 5 days.

3.What payment methods are accepted for LMV934IDRG4?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LMV934IDRG4 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for LMV934IDRG4?

LMV934IDRG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your LMV934IDRG4 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 LMV934IDRG4?

For technical support, including LMV934IDRG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LMV934IDRG4 requirements.

6.How does Aetrix verify that LMV934IDRG4 is sourced from the original manufacturer or authorized distributors?

All LMV934IDRG4 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 LMV934IDRG4 meets industry standards.

7.What is the process for return or replacement of LMV934IDRG4?

All LMV934IDRG4 units undergo pre-shipment inspection (PSI). If there is an issue with LMV934IDRG4, 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 LMV934IDRG4 part is unused and in its original packaging.

Return procedure for LMV934IDRG4:

1.Submit a request within 90 days.

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

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