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Texas Instruments LMV841QMGX/NOPB
- Part No.:
- LMV841QMGX/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 5-TSSOP, SC-70-5, SOT-353
- Datasheet:
-
LMV841QMGX/NOPB.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT SC70-5
- Quantity:
- Payment:
- Shipping:
Inventory:4,201
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Product details
Overview
LMV841QMGX/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 0.3 pA input bias current and 500 µV max input offset voltage - enabling precision signal conditioning in space-constrained, low-power systems.
For engineers reviewing the LMV841QMGX/NOPB datasheet, LMV841QMGX/NOPB pinout, LMV841QMGX/NOPB application, or LMV841QMGX/NOPB equivalent, key selection criteria include its SC70-5 package footprint, −40°C to +125°C operating temperature range, rail-to-rail swing at 3.3 V/5 V/±5 V supplies, and verified performance in active filter and DAC buffer topologies.
Technical Context
The LMV841QMGX/NOPB implements a CMOS input stage with anti-parallel ESD diodes limiting differential input voltage to ±300 mV, and supports dual- and split-supply operation (2.7 V to 12 V or ±5 V). Its RRIO architecture enables full dynamic range utilization across supply rails, critical for low-voltage sensor front-ends where headroom is constrained.
Designed for stability with capacitive loads up to 100 pF, it maintains 67° phase margin and exhibits 20 nV/√Hz input voltage noise at 1 kHz - making it suitable for low-frequency, high-resolution measurement paths without external filtering overhead.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2.7 V to 12 V - supports direct connection to Li-ion, 3.3 V logic, and industrial 12 V rails without regulation |
| Unity-Gain Bandwidth | 4.5 MHz - enables stable closed-loop gain ≥10 up to ~450 kHz for anti-aliasing or active filter use |
| Input Bias Current | 0.3 pA typical - preserves signal integrity from high-Z sources like pH electrodes or piezoelectric sensors |
| Input Offset Voltage | ±500 µV max - ensures ≤0.5 mV error in 1 V full-scale sensor outputs without trimming |
| Rail-to-Rail I/O | Input common-mode range extends 100 mV beyond rails; output swings within 32–130 mV of rails - maximizes usable dynamic range at low supply |
| Quiescent Current | 1.5 mA max per channel - allows continuous operation in battery-powered devices for >1 year on a 200 mAh cell |
| Operating Temperature | −40°C to +125°C - qualified for under-hood automotive and industrial control environments |
Pinout & Package
LMV841QMGX/NOPB is housed in a 5-pin SC70 package (2.00 mm × 1.25 mm × 0.95 mm), optimized for area-constrained PCBs in portable and embedded systems.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| +IN | Noninverting Input | High-impedance CMOS node; accepts signals up to V− − 0.1 V and V+ + 0.3 V |
| −IN | Inverting Input | High-impedance CMOS node; differential input limited to ±300 mV to avoid protection diode conduction |
| OUT | Amplifier Output | Capable of sourcing/sinking ≥20 mA; rail-to-rail swing depends on load and supply |
| V+ | Positive Supply | Accepts 2.7–12 V or +5 V in split-supply mode; decoupling required within 1 cm |
| V− | Negative Supply | Ground in single-supply mode; −5 V in split-supply mode; must be referenced to system ground |
Key Features
| Feature | Design Value |
|---|---|
| CMOS Input Stage | 0.3 pA input bias current enables direct interfacing with >1 GΩ sensor impedances without signal attenuation |
| Rail-to-Rail Input/Output | Full input common-mode range (−0.2 V to V+ + 0.2 V) and output swing within 32 mV of rails at 10 kΩ load preserve resolution in 3.3 V systems |
| Low Input Voltage Noise | 20 nV/√Hz at 1 kHz minimizes added noise in precision DC-coupled amplification chains |
| Wide Supply Range | Operates from 2.7 V (single-cell LiFePO₄) to 12 V (industrial bus), eliminating need for dedicated LDOs in multi-rail designs |
| High PSRR/CMRR | 108 dB PSRR and 112 dB CMRR suppress power rail ripple and common-mode interference in noisy environments |
Applications
| High-Impedance Sensor Interface | Battery-Powered Instrumentation |
|---|---|
Use Scenario: Amplifying microamp-level currents from electrochemical gas sensors or pH electrodes with minimal loading error. IC Role / Device Role / Timing Role: Precision transimpedance amplifier with ultra-low input bias current and rail-to-rail output swing. Use Value: Enables direct sensor connection without guard rings or bootstrapping, reducing BOM count and layout complexity. | Use Scenario: Signal conditioning in handheld multimeters or portable environmental monitors powered by coin-cell or Li-ion batteries. IC Role / Device Role / Timing Role: Low-noise, low-quiescent-current op amp for analog front-end gain stages and reference buffers. Use Value: Extends battery life beyond 12 months while maintaining 16-bit-equivalent effective resolution. |
| DAC Output Buffer | Active Filter Stage |
Use Scenario: Driving 12–16-bit DAC outputs into varying loads (e.g., ADC input, transmission line, or actuator) without gain error or settling distortion. IC Role / Device Role / Timing Role: Unity-gain stable buffer with 4.5 MHz bandwidth and 2.5 V/µs slew rate. Use Value: Maintains monotonicity and settles within 1 µs to 0.1% for 4 V step, supporting update rates >500 kSPS. | Use Scenario: Implementing second-order Sallen-Key or multiple-feedback band-pass filters for ECG, audio pre-processing, or vibration analysis. IC Role / Device Role / Timing Role: Active gain block with low noise, low distortion (0.003% THD+N), and stable phase response. Use Value: Achieves <1% passband ripple and sharp roll-off without external trimming components. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV9001IDCKR | Lower 0.65 mA supply current but reduced 1 MHz GBW and 1.5 V/µs slew rate; 0.2 pA input bias current | Better suited for ultra-low-power, sub-100 kHz signal paths; less capable in active filter or fast DAC buffering | Select TLV9001IDCKR when quiescent current is primary constraint and bandwidth <1 MHz suffices |
| OPA333AIDBVR | Zero-drift architecture; 10 µV max VOS and 0.05 µV/°C drift vs. LMV841QMGX/NOPB's 500 µV/0.35 µV/°C; 1.8 MHz GBW | Superior DC accuracy for precision weigh scales or thermopile amplification; lower bandwidth limits AC performance | Select OPA333AIDBVR when offset/drift dominate error budget and signal bandwidth ≤200 kHz |
Compared with TLV9001IDCKR and OPA333AIDBVR, LMV841QMGX/NOPB offers the best balance of bandwidth (4.5 MHz), rail-to-rail operation, and low input bias current (0.3 pA) in the SC70-5 package - making it optimal for high-Z sensor interfaces requiring both speed and precision at 3.3 V/5 V.
Availability
LMV841QMGX/NOPB is available at Aetrix Electronics and suitable for high-impedance sensor interface, battery-powered instrumentation, and active filter design requiring stable component supply across automotive, industrial, and medical end equipment.
Supply support for LMV841QMGX/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, with over 90 years of innovation in precision analog ICs and broad portfolio coverage.
The LMV84x family was designed specifically for low-voltage, low-power, high-accuracy signal conditioning in portable and harsh-environment applications - emphasizing rail-to-rail operation, CMOS input fidelity, and extended temperature reliability.
FAQ
What is the maximum differential input voltage allowed for LMV841QMGX/NOPB?
The LMV841QMGX/NOPB specifies an absolute maximum differential input voltage of ±300 mV, enforced by internal anti-parallel ESD diodes. Exceeding this limit risks forward-biasing the diodes and drawing excessive current from the source. For safe operation, ensure input differential voltage remains within ±300 mV or add series resistance to limit current to <10 mA. This specification is explicitly defined in Section 6.1 of the LMV841QMGX/NOPB datasheet.
Does LMV841QMGX/NOPB support true rail-to-rail input common-mode range?
Yes, LMV841QMGX/NOPB supports rail-to-rail input common-mode range: it operates with inputs extending to V− − 0.1 V and V+ + 0.3 V under recommended conditions. At 5 V supply, this yields a −0.2 V to 5.2 V input range; at ±5 V, it covers −5.2 V to +5.2 V. This capability is confirmed in Section 6.5–6.7 Electrical Characteristics tables and enables direct interfacing with sensors whose output spans the full supply rails.
What is the typical output swing capability of LMV841QMGX/NOPB at 3.3 V supply?
At 3.3 V single supply and 10 kΩ load, LMV841QMGX/NOPB delivers typical output swing within 32 mV of V+ (high-side) and 33 mV of V− (low-side), per Section 6.5 of the datasheet. This rail-to-rail output behavior ensures >3.2 V peak-to-peak dynamic range - critical for maximizing SNR in 3.3 V microcontroller-based data acquisition systems without level-shifting circuitry.
Can LMV841QMGX/NOPB drive capacitive loads reliably?
Yes, LMV841QMGX/NOPB is characterized for stability with capacitive loads up to 100 pF, maintaining ≥67° phase margin per Figure 20 in the datasheet. For loads >100 pF, external isolation resistance (e.g., 10–50 Ω in series with output) is recommended. This capability makes LMV841QMGX/NOPB suitable for driving ADC inputs, long traces, or piezo actuators without oscillation risk.
Is LMV841QMGX/NOPB qualified for automotive applications?
LMV841QMGX/NOPB is specified for operation from −40°C to +125°C and carries the "Q" suffix denoting automotive-grade qualification per AEC-Q100. It is manufactured in TI's IATF 16949-certified facilities and meets stress testing requirements for temperature cycling, HTOL, and ESD - confirming suitability for engine control, body electronics, and ADAS sensor signal conditioning where reliability is critical.
LMV841QMGX/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
LMV841QMGX/NOPB FAQ
1.How can I place an order for LMV841QMGX/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LMV841QMGX/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 LMV841QMGX/NOPB reliable?
The price and inventory of LMV841QMGX/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LMV841QMGX/NOPB is usually 5 days.
3.What payment methods are accepted for LMV841QMGX/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LMV841QMGX/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LMV841QMGX/NOPB?
LMV841QMGX/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LMV841QMGX/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 LMV841QMGX/NOPB?
For technical support, including LMV841QMGX/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LMV841QMGX/NOPB requirements.
6.How does Aetrix verify that LMV841QMGX/NOPB is sourced from the original manufacturer or authorized distributors?
All LMV841QMGX/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 LMV841QMGX/NOPB meets industry standards.
7.What is the process for return or replacement of LMV841QMGX/NOPB?
All LMV841QMGX/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LMV841QMGX/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 LMV841QMGX/NOPB part is unused and in its original packaging.
Return procedure for LMV841QMGX/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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