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Texas Instruments LMV641MA/NOPB
- Part No.:
- LMV641MA/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LMV641MA/NOPB.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,907
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Product details
Overview
LMV641MA/NOPB from Texas Instruments is a low-power, rail-to-rail output operational amplifier optimized for battery-powered and portable systems. It delivers 10 MHz unity-gain bandwidth at just 138 µA supply current, features 500 µV max input offset voltage, 120 dB CMRR, and operates from 2.7 V to 12 V single or ±5 V dual supplies - enabling precision signal conditioning in sensor front-ends and handheld instrumentation.
For engineers reviewing the LMV641MA/NOPB datasheet, LMV641MA/NOPB pinout, LMV641MA/NOPB application, or LMV641MA/NOPB equivalent, key selection criteria include its ultra-low quiescent current versus bandwidth trade-off, rail-to-rail output swing within 40 mV of rails (at 2 kΩ), 14 nV/√Hz input voltage noise, and guaranteed operation across −40°C to +125°C.
Technical Context
The LMV641MA/NOPB employs a unity-gain stable internal compensation architecture delivering 10 MHz gain-bandwidth product with only 138 µA typical supply current. Its input stage supports common-mode voltage down to the negative rail, enabling ground-sensing in single-supply configurations.
It achieves 0.002% THD+N at 1 kHz with 2 kΩ load and exhibits a low 1/f noise corner at 4 Hz - critical for DC-coupled, low-frequency sensor amplification. Stability is maintained up to 100 pF capacitive load; external compensation (e.g., series RISO or in-loop RC) is required beyond that threshold.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2.7 V to 12 V single supply or ±5 V dual supply - supports wide input range without level-shifting in portable and industrial sensors. |
| Unity-Gain Bandwidth | 10 MHz - enables high-fidelity amplification of audio and ultrasonic signals while maintaining low power consumption. |
| Supply Current | 138 µA typical - allows multi-channel designs in space-constrained, battery-operated devices with >1-year runtime. |
| Input Offset Voltage | Max 500 µV - ensures <1 mV error in 12-bit ADC interfaces without trimming, suitable for precision transducer signal chains. |
| CMRR / PSRR | 120 dB / 105 dB - rejects power rail noise and common-mode interference in noisy embedded environments. |
| Output Swing | Within 40 mV of rails (2 kΩ load) - maximizes dynamic range in low-voltage systems, preserving signal headroom. |
| Voltage Noise Density | 14 nV/√Hz at 1 kHz - outperforms typical low-power op amps, supporting low-noise amplification of microvolt-level sensor outputs. |
Pinout & Package
LMV641MA/NOPB is packaged in a 5-pin SC70 (2.00 mm × 1.25 mm) surface-mount package - optimized for board space savings in compact portable electronics.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN+ | Noninverting Input | High-impedance node for reference or sensor signal input; supports rail-to-rail common-mode range including V−. |
| VIN− | Inverting Input | Feedback node for closed-loop configurations; matched input bias current minimizes offset drift in precision integrators. |
| VOUT | Amplifier Output | Rail-to-rail output capable of sourcing/sinking ≥22 mA; requires external isolation for >100 pF capacitive loads. |
| V+ | Positive Supply | Accepts 2.7–12 V single or positive rail of ±5 V dual supply; decoupling capacitor essential for PSRR performance. |
| V− | Negative Supply | Connects to ground (single supply) or −5 V (dual supply); input common-mode extends to this rail for true ground sensing. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail output stage | Delivers full dynamic range in low-voltage systems - e.g., 0–2.7 V output swing on 2.7 V supply - maximizing ADC utilization. |
| 1/f noise corner at 4 Hz | Enables stable DC-coupled amplification of slow-moving sensor signals (e.g., thermopiles, strain gauges) without 1/f drift corruption. |
| 10 MHz GBW at 138 µA | Provides best-in-class bandwidth-per-power ratio - 72.5 kHz/µA - critical for multi-channel, real-time portable data acquisition. |
| Guaranteed operation to +125°C | Validates use in under-hood automotive sensors and industrial motor control feedback loops without derating. |
| ±2000 V HBM ESD rating | Reduces need for external protection in handheld test equipment and field-deployable sensor nodes. |
Applications
| Portable Medical Sensors | Industrial Temperature Monitoring |
|---|---|
Use Scenario: Amplifying microvolt-level output from thermistor or RTD bridges in handheld glucose meters or pulse oximeters. IC Role / Device Role / Timing Role: Precision DC-coupled instrumentation amplifier front-end with ground-referenced input and rail-to-rail output driving 12-bit SAR ADC. Use Value: 500 µV max VOS and 14 nV/√Hz noise ensure sub-0.1°C resolution without calibration; 138 µA IQ extends battery life. |
Use Scenario: Signal conditioning for 4–20 mA loop-powered temperature transmitters in factory automation. IC Role / Device Role / Timing Role: Low-drift, high-PSRR buffer for bridge sensor excitation and output scaling before current loop driver. Use Value: 105 dB PSRR suppresses supply ripple from noisy 24 V industrial rails; −40°C to +125°C rating ensures reliability in uncontrolled enclosures. |
| Audio Line Drivers | Portable Data Acquisition Front-End |
Use Scenario: Driving low-impedance headphones or line inputs in Bluetooth earbuds and voice recorders. IC Role / Device Role / Timing Role: Single-supply, rail-to-rail output buffer with 0.002% THD+N at 1 kHz for clean analog audio path. Use Value: 10 MHz bandwidth preserves harmonic content up to 20 kHz; 40 mV rail margin prevents clipping on 3.3 V supply. |
Use Scenario: Multi-channel sensor hub in IoT environmental monitors measuring humidity, pressure, and gas concentration. IC Role / Device Role / Timing Role: Low-power, space-efficient signal conditioner for simultaneous analog sensor inputs feeding multiplexed ADC. Use Value: SC70 footprint saves PCB area; 138 µA per channel enables 8-channel design on coin-cell battery for >6 months. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP6001T-E/OT | Lower bandwidth (1 MHz), higher VOS (1.5 mV max), same SC70-5 package and 1 µA IQ. | Better for ultra-low-power (<1 µA) but non-critical bandwidth apps (e.g., battery voltage monitoring); not suitable for audio or fast sensors. | Select when power is more critical than speed/noise; verify VOS impact on system accuracy. |
| TLV9001IDBVR | Higher bandwidth (1 MHz → 1 MHz), lower noise (18 nV/√Hz), same 138 µA IQ, but 125°C rating limited to 105°C. | Preferred for cost-sensitive consumer audio where extended temperature is unnecessary; lacks automotive/industrial qualification. | Choose for commercial-grade portable audio if 125°C operation is not required; confirm thermal derating in enclosure. |
Compared with MCP6001T-E/OT and TLV9001IDBVR, LMV641MA/NOPB uniquely balances 10 MHz bandwidth, 14 nV/√Hz noise, and 125°C operation in SC70 - making it the only option among the three qualified for precision, high-temp, battery-powered instrumentation.
Availability
LMV641MA/NOPB is available at Aetrix Electronics and suitable for portable medical sensors, industrial temperature monitoring, audio line drivers, and portable data acquisition front-ends requiring stable component supply across long production lifecycles.
Supply support for LMV641MA/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 designing analog ICs, embedded processors, and digital signal solutions for industrial, automotive, and consumer markets.
The LMV641MA/NOPB belongs to TI's precision low-power op amp portfolio, engineered specifically for battery-constrained, high-accuracy signal conditioning in portable and harsh-environment applications.
FAQ
What is the maximum capacitive load the LMV641MA/NOPB can drive without external compensation?
The LMV641MA/NOPB remains stable with capacitive loads up to 100 pF when properly decoupled and laid out. Beyond 100 pF, external compensation (e.g., series RISO or in-loop RC network) is required to maintain phase margin. The datasheet confirms stable operation up to 1 nF with appropriate compensation, though bandwidth is reduced accordingly. Always verify stability via simulation or bench testing for your specific layout and load.
Does the LMV641MA/NOPB support true single-supply operation with input referenced to ground?
Yes. The LMV641MA/NOPB features a common-mode input voltage range that includes the negative supply rail (V−), allowing direct ground-referenced input in single-supply configurations (e.g., V− = 0 V, V+ = 2.7–12 V). This eliminates the need for input biasing networks in sensor interfaces like thermistor bridges or current-sense amplifiers - simplifying design and reducing component count in the LMV641MA/NOPB signal path.
What is the typical supply current of the LMV641MA/NOPB at 2.7 V and 10 V supply voltages?
At 2.7 V supply, the LMV641MA/NOPB draws 138 µA typical supply current; at 10 V, it draws 158 µA typical. Both values fall well within the 138–240 µA specified range across temperature and supply voltage. This near-constant low IQ makes the LMV641MA/NOPB highly predictable for battery-life calculations in energy-sensitive applications such as wearable health monitors.
Can the LMV641MA/NOPB be used in a dual-supply ±5 V configuration?
Yes. The LMV641MA/NOPB is fully specified for ±5 V operation, with DC electrical characteristics (e.g., VOS, CMRR, PSRR) validated at ±5 V. Its rail-to-rail output and input common-mode range extending to V− enable symmetric signal handling - ideal for legacy industrial analog modules or audio preamps requiring bipolar supplies. The LMV641MA/NOPB maintains 10 MHz bandwidth and 0.002% THD+N under these conditions.
Is the LMV641MA/NOPB RoHS-compliant and lead-free?
Yes. The LMV641MA/NOPB carries the "/NOPB" suffix, indicating lead-free (Pb-free) packaging and RoHS compliance per EU Directive 2011/65/EU. It uses matte tin (Sn) lead finish and meets JEDEC J-STD-020 moisture sensitivity level 1 (MSL-1), eliminating bake requirements prior to reflow. This ensures compatibility with modern lead-free assembly processes without compromising reliability of the LMV641MA/NOPB in production.
LMV641MA/NOPB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 1
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 2.6V/µs
- Gain Bandwidth Product:
- 10 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 70 nA
- Voltage - Input Offset:
- 30 µV
- Current - Supply:
- 158µA
- Current - Output / Channel:
- 112 mA
- Voltage - Supply Span (Min):
- 2.7 V
- Voltage - Supply Span (Max):
- 12 V
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
LMV641MA/NOPB FAQ
1.How can I place an order for LMV641MA/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LMV641MA/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 LMV641MA/NOPB reliable?
The price and inventory of LMV641MA/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LMV641MA/NOPB is usually 5 days.
3.What payment methods are accepted for LMV641MA/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LMV641MA/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LMV641MA/NOPB?
LMV641MA/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LMV641MA/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 LMV641MA/NOPB?
For technical support, including LMV641MA/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LMV641MA/NOPB requirements.
6.How does Aetrix verify that LMV641MA/NOPB is sourced from the original manufacturer or authorized distributors?
All LMV641MA/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 LMV641MA/NOPB meets industry standards.
7.What is the process for return or replacement of LMV641MA/NOPB?
All LMV641MA/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LMV641MA/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 LMV641MA/NOPB part is unused and in its original packaging.
Return procedure for LMV641MA/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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