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Texas Instruments LMV841QMG/NOPB
- Part No.:
- LMV841QMG/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 5-TSSOP, SC-70-5, SOT-353
- Datasheet:
-
LMV841QMG/NOPB.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT SC70-5
- Quantity:
- Payment:
- Shipping:
Inventory:4,952
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Product details
Overview
LMV841QMG/NOPB from Texas Instruments is a single-channel, CMOS-input, rail-to-rail input/output (RRIO) 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 supply current per channel, and features 500 µV max input offset voltage and 0.3 pA typical input bias current.
For engineers reviewing the LMV841QMG/NOPB datasheet, LMV841QMG/NOPB pinout, LMV841QMG/NOPB application, or LMV841QMG/NOPB equivalent, this device is selected for precision analog front-ends where low power, wide supply range, and high DC accuracy at temperature extremes (−40°C to +125°C) are critical - especially in space-constrained SC70-packaged systems.
Technical Context
The LMV841QMG/NOPB implements a CMOS input stage with anti-parallel ESD diodes limiting differential input voltage to ±300 mV, enabling robust interfacing with high-impedance sources like piezoresistive sensors and pH electrodes. Its RRIO architecture supports full-swing signal conditioning across the entire supply rail, including near-zero-volt operation at 3.3 V and ±5 V dual-supply configurations.
It achieves 133 dB open-loop gain and 112 dB CMRR at 25°C, with 20 nV/√Hz input voltage noise and 2.5 V/µs slew rate - characteristics validated across 3.3 V, 5 V, and ±5 V operating conditions. The device maintains stable phase margin (67°) with capacitive loads up to 100 pF, supporting active filter and DAC buffer implementations without external compensation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2.7 V to 12 V - enables direct integration into 3.3 V microcontroller systems and 12 V industrial rails without level-shifting. |
| Unity-Gain Bandwidth | 4.5 MHz - supports audio-band filtering, fast-settling sensor signal conditioning, and multi-pole active filter design. |
| Input Bias Current | 0.3 pA typical - preserves signal integrity when amplifying nanoamp-level currents from photodiodes or ion-selective electrodes. |
| Input Offset Voltage | ±500 µV maximum - ensures <1 LSB error in 12-bit ADC interfaces with gain ≥10, reducing calibration overhead. |
| Rail-to-Rail I/O | Input common-mode range extends to V− −0.1 V and V+ +0.2 V; output swings within 32 mV of rails (RL = 10 kΩ) - maximizes dynamic range in low-voltage systems. |
| Operating Temperature | −40°C to +125°C - qualified for under-hood automotive, industrial control, and outdoor IoT sensor nodes. |
| Supply Current | 1.03 mA typical at ±5 V - allows 10+ channels on a 10 mA budget in portable data loggers. |
Pinout & Package
LMV841QMG/NOPB is housed in a 5-pin SC70 package (2.00 mm × 1.25 mm × 0.95 mm), optimized for ultra-dense PCB layouts in portable and wearable electronics.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| +IN | Noninverting Input | High-impedance CMOS node accepting signals from sensors or DAC outputs; differential input voltage must be limited to ±300 mV. |
| −IN | Inverting Input | High-impedance CMOS node used for feedback configuration; internal 130 Ω series resistors limit fault current during slewing. |
| OUT | Amplifier Output | Capable of sourcing/sinking ≥20 mA; rail-to-rail swing supports direct driving of SAR ADC reference inputs or low-side current sense buffers. |
| V+ | Positive Supply | Accepts 2.7–12 V single supply or positive rail of ±5 V dual supply; decoupling capacitor required within 1 cm for stability. |
| V− | Negative Supply | Ground reference for single supply or negative rail (−5 V) in dual supply; connects to system ground or split-rail generator. |
Key Features
| Feature | Design Value |
|---|---|
| CMOS Input Stage | 0.3 pA input bias current enables direct connection to >1 GΩ source impedances without significant DC error. |
| Rail-to-Rail Input/Output | Supports full-scale signal acquisition from 0 V to V+ in single-supply systems, eliminating need for level-shifting circuitry. |
| Low Power Operation | 1 mA supply current per channel allows integration of multiple amplifiers in energy-constrained battery-powered designs. |
| Wide Temperature Range | Specified performance over −40°C to +125°C ensures reliability in automotive engine control units and industrial motor drives. |
| High DC Precision | 500 µV max input offset voltage and 0.25 µV/°C drift (at ±5 V) reduce thermal calibration requirements in precision instrumentation. |
Applications
| High-Impedance Sensor Interface | Battery-Powered Instrumentation |
|---|---|
|
Use Scenario: Amplifying weak signals from pH electrodes, piezoresistive pressure sensors, or thermopiles in handheld diagnostic tools. IC Role / Device Role / Timing Role: Front-end transimpedance or noninverting amplifier providing gain, buffering, and rail-to-rail signal conditioning before ADC sampling. Use Value: 0.3 pA input bias current prevents loading of high-Z sensors; 500 µV offset ensures sub-mV measurement accuracy without trimming. |
Use Scenario: Signal conditioning in portable multimeters, environmental data loggers, and wireless sensor nodes powered by coin-cell batteries. IC Role / Device Role / Timing Role: Low-power op amp for sensor excitation, filter stages, and DAC output buffering in 3.3 V MCU-based systems. Use Value: 1 mA supply current enables >100 hours of continuous operation on a CR2032; SC70 footprint saves >60% board area vs SOIC-8 alternatives. |
| High-Gain Instrumentation Amplifier | DAC Buffers and Active Filters |
|
Use Scenario: Building 3-op-amp instrumentation amplifiers for medical ECG front-ends requiring >100 dB CMRR and low noise. IC Role / Device Role / Timing Role: Precision gain-stage amplifier in the second stage of an IA, leveraging 133 dB open-loop gain and 112 dB CMRR. Use Value: 20 nV/√Hz input noise and 112 dB CMRR maintain SNR >80 dB at 1 kHz; rail-to-rail output drives ADC reference directly. |
Use Scenario: Second-order Sallen-Key low-pass filter and DAC output buffer in programmable logic controller (PLC) analog output modules. IC Role / Device Role / Timing Role: Unity-gain stable amplifier implementing active filtering and isolating DAC from load variations. Use Value: 4.5 MHz GBW supports cutoff frequencies up to 100 kHz; 67° phase margin ensures monotonic step response with 50 pF load capacitance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV9061IDCKR | Higher 10 MHz GBW and 6.5 V/µs slew rate; 0.5 pA input bias current; same SC70-5 package. | Better suited for higher-speed active filters and faster-settling DAC buffers; less optimal for ultra-low-current sensor interfaces. | Select TLV9061IDCKR when bandwidth >4.5 MHz or slew rate >2.5 V/µs is required; verify input protection limits remain compatible. |
| OPA333AIDBVR | Zero-drift architecture; 10 µV max offset, 0.02 µV/°C drift; 17 µA supply current; SC70-5 package. | Superior DC accuracy for long-term drift-critical applications (e.g., precision weight scales); higher quiescent current reduces battery life. | Choose OPA333AIDBVR when offset drift <0.1 µV/°C is mandatory; accept 17× higher supply current versus LMV841QMG/NOPB. |
Compared with TLV9061IDCKR and OPA333AIDBVR, LMV841QMG/NOPB delivers the optimal balance of low input bias current (0.3 pA), moderate bandwidth (4.5 MHz), and ultra-low power (1 mA) in the SC70 package - making it uniquely suitable for high-impedance, battery-operated sensor nodes where both precision and energy efficiency are constrained.
Availability
LMV841QMG/NOPB is available at Aetrix Electronics and suitable for high-impedance sensor interface, battery-powered instrumentation, and DAC buffer applications requiring stable component supply across automotive, industrial, and medical product lifecycles.
Supply support for LMV841QMG/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 company specializing in analog and embedded processing technologies, with leadership in precision amplifiers, power management, and signal chain solutions.
The LMV84x family was designed to address portable and space-constrained applications needing rail-to-rail operation, low power, and high DC accuracy - specifically targeting sensor signal conditioning in battery-powered and automotive-grade systems.
FAQ
What is the maximum differential input voltage allowed for LMV841QMG/NOPB?
The LMV841QMG/NOPB has internal anti-parallel ESD diodes between its inputs, limiting the maximum allowable differential input voltage to ±300 mV. Exceeding this value risks forward-biasing the diodes and causing excessive input current. For applications with larger differential signals, external series resistors (e.g., 500 Ω) are recommended to limit current to ≤10 mA, as specified in the absolute maximum ratings.
Does LMV841QMG/NOPB support true rail-to-rail input at 3.3 V supply?
Yes, LMV841QMG/NOPB supports rail-to-rail input operation at 3.3 V supply, with a common-mode input voltage range extending from V− −0.1 V to V+ +0.2 V. At 3.3 V single supply (V− = 0 V), this means the input can accept signals from −0.1 V to 3.5 V - covering the full 0–3.3 V range and allowing safe overvoltage tolerance on the positive side.
What is the typical supply current of LMV841QMG/NOPB at 5 V operation?
The typical supply current of LMV841QMG/NOPB at 5 V operation is 0.96 mA per channel, with a maximum of 2 mA over the full temperature range (−40°C to +125°C). This low quiescent current makes LMV841QMG/NOPB well-suited for always-on sensor monitoring circuits in battery-powered devices where average current draw must remain below 1.5 mA.
Can LMV841QMG/NOPB drive a 10 kΩ load rail-to-rail at 125°C?
Yes, LMV841QMG/NOPB maintains rail-to-rail output swing capability at 125°C: with RL = 10 kΩ, the output swings within 50 mV of V+ and 65 mV of V− at 5 V supply, and within 75 mV of each rail at ±5 V supply. These specifications are guaranteed over temperature, ensuring reliable full-scale signal delivery in high-temperature environments such as automotive engine control units.
Is LMV841QMG/NOPB pin-compatible with other members of the LMV84x family?
No, LMV841QMG/NOPB is not pin-compatible with LMV842 or LMV844. It uses a 5-pin SC70 package, while LMV842 uses 8-pin VSSOP/SOIC and LMV844 uses 14-pin TSSOP/SOIC. Each variant has distinct pin counts and layouts; PCB redesign is required when substituting between LMV841QMG/NOPB and other LMV84x devices.
LMV841QMG/NOPB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 5-TSSOP, SC-70-5, SOT-353
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 1
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 2.5V/µs
- Gain Bandwidth Product:
- 4.5 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 0.3 pA
- Voltage - Input Offset:
- 50 µV
- Current - Supply:
- 1.03mA
- Current - Output / Channel:
- 37 mA
- Voltage - Supply Span (Min):
- 2.7 V
- Voltage - Supply Span (Max):
- 12 V
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-70-5
LMV841QMG/NOPB FAQ
1.How can I place an order for LMV841QMG/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LMV841QMG/NOPB 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 LMV841QMG/NOPB reliable?
The price and inventory of LMV841QMG/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LMV841QMG/NOPB is usually 5 days.
3.What payment methods are accepted for LMV841QMG/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LMV841QMG/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LMV841QMG/NOPB?
LMV841QMG/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LMV841QMG/NOPB 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 LMV841QMG/NOPB?
For technical support, including LMV841QMG/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LMV841QMG/NOPB requirements.
6.How does Aetrix verify that LMV841QMG/NOPB is sourced from the original manufacturer or authorized distributors?
All LMV841QMG/NOPB 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 LMV841QMG/NOPB meets industry standards.
7.What is the process for return or replacement of LMV841QMG/NOPB?
All LMV841QMG/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LMV841QMG/NOPB, 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 LMV841QMG/NOPB part is unused and in its original packaging.
Return procedure for LMV841QMG/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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