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Texas Instruments LMV861MGX/NOPB
- Part No.:
- LMV861MGX/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 5-TSSOP, SC-70-5, SOT-353
- Datasheet:
-
LMV861MGX/NOPB.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT SC70-5
- Quantity:
- Payment:
- Shipping:
Inventory:736
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Product details
Overview
LMV861MGX/NOPB from Texas Instruments is a single-channel, CMOS-input, rail-to-rail output operational amplifier optimized for EMI-sensitive signal conditioning in precision sensor interfaces. It delivers 30 MHz gain-bandwidth, 18 V/µs slew rate, 1 mV max input offset voltage, and 105 dB EMI rejection ratio at 1.8 GHz - enabling robust photodiode preamplification and medical diagnosis equipment operation across −40°C to +125°C.
For engineers reviewing the LMV861MGX/NOPB datasheet, LMV861MGX/NOPB pinout, LMV861MGX/NOPB application, or LMV861MGX/NOPB equivalent, key selection criteria include its 2.25 mA supply current at 3.3 V, 0.1 pA input bias current, SC70-5 package footprint, and verified stability with 200 pF capacitive loads - critical for low-noise, space-constrained, high-reliability analog front-ends.
Technical Context
The LMV861MGX/NOPB employs a unity-gain-stable CMOS input stage with input common-mode range extending to ground and rail-to-rail output swing, supporting single-supply operation from 2.7 V to 5.5 V. Its architecture maintains 93 dB PSRR and 93 dB CMRR over full temperature range while rejecting RF interference via on-die EMI hardening.
This op amp features a 70° phase margin and is characterized for stable operation with capacitive loads up to 200 pF without external compensation. Its 8 nV/√Hz input voltage noise at 1 kHz and 0.015 pA/√Hz input current noise support high-fidelity amplification of low-level transducer signals such as those from pressure sensors and photodiodes.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 2.7 V to 5.5 V - enables direct interface with 3.3 V and 5 V microcontroller I/O rails and ADC references. |
| GBW Product | 30 MHz - supports closed-loop bandwidths >10 MHz in gain-of-2 configurations for fast sensor response. |
| Input Offset Voltage | ≤1 mV max - ensures ≤0.03% error in 33 mV full-scale bridge sensor outputs without trimming. |
| EMI Rejection Ratio | 105 dB at 1.8 GHz - suppresses cellular band interference to sub-μV level in unshielded PCB layouts. |
| Slew Rate | 18 V/µs - sustains 1 VPP signals up to ~2.8 MHz without distortion in unity-gain buffer applications. |
| Input Bias Current | 0.1 pA typical - prevents >100 MΩ source impedance degradation in piezoresistive or MEMS pressure sensor interfaces. |
| Operating Temperature | −40°C to +125°C - qualified for under-hood automotive and industrial process monitoring environments. |
Pinout & Package
LMV861MGX/NOPB is housed in a 5-pin SC70 package (2.0 mm × 1.25 mm, 0.65 mm pitch), optimized for high-density PCB layouts in portable and medical devices.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OUT) | Output | Rail-to-rail voltage source capable of sourcing/sinking ≥67 mA; swing within 3–5 mV of rails at 10 kΩ load. |
| 2 (−IN) | Inverting Input | High-impedance CMOS node; accepts common-mode voltages from −0.1 V to V+ − 1.2 V. |
| 3 (GND) | Ground Reference | Power and signal reference plane; must be low-inductance connection to minimize EMI coupling. |
| 4 (+IN) | Non-inverting Input | High-impedance CMOS node; identical common-mode range and bias current spec as −IN. |
| 5 (V+) | Positive Supply | Accepts 2.7–5.5 V; internal regulation ensures stable biasing across supply variation and temperature. |
Key Features
| Feature | Design Value |
|---|---|
| EMI Hardening | Validated 105 dB rejection at 1.8 GHz reduces need for external RF filtering in wireless-adjacent systems. |
| Rail-to-Rail Output | Swings within 3 mV of supply rails at 10 kΩ load, maximizing dynamic range for 12-bit+ ADC interfacing. |
| Capacitive Load Drive | Stable with up to 200 pF directly at output - eliminates isolation resistor in most sensor buffer designs. |
| Low Input Bias Current | 0.1 pA typical enables use with >1 GΩ sensor sources (e.g., pH electrodes, pyroelectric detectors) without drift. |
| Wide Temp Range | Specified performance maintained from −40°C to +125°C - suitable for automotive cabin and industrial motor control. |
Applications
| Photodiode Preamp | Weight Scale Systems |
|---|---|
Use Scenario: Amplifying weak current from silicon photodiodes in pulse oximetry or smoke detection modules. IC Role / Device Role / Timing Role: Transimpedance amplifier with ultra-low input bias current and low 1/f noise to preserve SNR. Use Value: 0.1 pA input bias avoids dark-current-induced offset drift; 8 nV/√Hz noise enables detection of <100 nA photocurrents. | Use Scenario: Conditioning mV-level output from strain-gauge load cells in commercial kitchen scales and warehouse platforms. IC Role / Device Role / Timing Role: Precision DC-coupled gain stage before 24-bit sigma-delta ADC, operating at 10–100 Hz bandwidth. Use Value: 1 mV max VOS contributes <0.01% error in 100 mV full-scale bridge output; rail-to-rail swing maximizes ADC utilization. |
| Medical Diagnosis Equipment | EMI-Hardened Sensor Interface |
Use Scenario: Signal conditioning in portable ECG or EEG front-ends exposed to hospital-grade RF emitters (Wi-Fi, MRI peripherals). IC Role / Device Role / Timing Role: Low-noise, high-CMRR buffer isolating electrode inputs from noisy digital subsystems. Use Value: 105 dB EMIRR at 1.8 GHz prevents RF rectification artifacts in baseband bio-signals; 93 dB CMRR rejects power-line interference. | Use Scenario: Front-end amplification for pressure sensors in automotive brake-by-wire or HVAC refrigerant monitoring. IC Role / Device Role / Timing Role: Single-supply, high-PSRR amplifier immune to ignition noise and AM radio band coupling. Use Value: 93 dB PSRR suppresses supply ripple from switching regulators; −40°C to +125°C rating ensures reliability in engine bay mounting. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LMV841MGX/NOPB | Lower GBW (10 MHz), lower supply current (1.25 mA), no EMI hardening spec | Not suitable for RF-noisy environments; limited bandwidth for fast transient sensing | Select only when EMI immunity is not required and power budget is tighter than performance needs |
| OPA333AIDBVR | Zero-drift architecture, 12 μV max VOS, higher cost, 350 kHz GBW | Better DC accuracy but insufficient bandwidth for >10 kHz sensor signals | Prefer for ultra-low-drift DC applications (e.g., precision weigh scales); avoid for dynamic medical waveforms |
Compared with LMV861MGX/NOPB, LMV841MGX/NOPB trades EMI resilience and bandwidth for lower quiescent current, while OPA333AIDBVR offers superior DC precision at the expense of speed - making LMV861MGX/NOPB the optimal balance for high-fidelity, high-speed, EMI-hardened analog sensing.
Availability
LMV861MGX/NOPB is available at Aetrix Electronics and suitable for photodiode preamplification, weight scale systems, and medical diagnosis equipment requiring stable component supply across automotive, industrial, and portable healthcare markets.
Supply support for LMV861MGX/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, embedded processing, and connectivity solutions with deep expertise in high-reliability signal chain design.
The LMV861MGX/NOPB belongs to TI's EMI-hardened precision op amp product line, engineered specifically for sensor signal conditioning in electrically noisy environments where RF immunity, low noise, and rail-to-rail operation are simultaneously required.
FAQ
What is the maximum capacitive load the LMV861MGX/NOPB can drive without external compensation?
The LMV861MGX/NOPB is specified to remain stable with capacitive loads up to 200 pF when configured as a unity-gain buffer. This capability eliminates the need for series isolation resistors in many sensor interface designs, preserving signal integrity and simplifying layout. Stability is verified per TI's characterization across temperature and supply voltage ranges; loads exceeding 200 pF require an RISO network per Figure 46 in the LMV861/LMV862 datasheet.
Does the LMV861MGX/NOPB support true rail-to-rail input common-mode range?
No - the LMV861MGX/NOPB features rail-to-rail *output* swing but its input common-mode voltage range extends to ground and up to V+ − 1.2 V (e.g., 2.1 V at 3.3 V supply). This allows sensing below ground and compatibility with single-supply configurations where the non-inverting input may be biased near 0 V, but does not support full rail-to-rail input differential pairs like some newer CMOS op amps.
What is the significance of the 105 dB EMIRR specification at 1.8 GHz for the LMV861MGX/NOPB?
The 105 dB EMI Rejection Ratio at 1.8 GHz quantifies how effectively the LMV861MGX/NOPB suppresses GSM/DCS cellular band interference from manifesting as input-offset voltage shifts. At this frequency, a 100 mVP RF signal induces only ~3.2 nV of input-referred offset - orders of magnitude below typical sensor signal levels - enabling reliable operation in smartphones, wearables, and IoT gateways without added shielding or ferrites.
Can the LMV861MGX/NOPB operate from a 2.7 V supply while maintaining full AC performance?
Yes - the LMV861MGX/NOPB is fully specified from 2.7 V to 5.5 V. At 2.7 V, it retains 30 MHz GBW, 18 V/µs slew rate, and rail-to-rail output swing (within 5 mV of rails at 10 kΩ), though output current drive reduces slightly versus 5 V operation. The 2.25 mA supply current at 3.3 V scales predictably downward at 2.7 V, supporting battery-powered instrumentation with multi-year runtime.
Is the LMV861MGX/NOPB pin-compatible with other SC70-5 op amps such as the TLV2461 or OPA348?
No - while all three are SC70-5 packaged single op amps, their pinouts differ: LMV861MGX/NOPB uses OUT/−IN/GND/+IN/V+ (pin 1–5), whereas TLV2461 and OPA348 assign V+ to pin 5 but place GND at pin 3 and +IN at pin 3 or pin 2 respectively. PCB layout must follow the LMV861MGX/NOPB-specific pin mapping shown in Figure 2 of the datasheet to avoid functional failure.
LMV861MGX/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:
- 20V/µs
- Gain Bandwidth Product:
- 31 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 0.1 pA
- Voltage - Input Offset:
- 273 µV
- Current - Supply:
- 2.47mA
- Current - Output / Channel:
- 150 mA
- Voltage - Supply Span (Min):
- 2.7 V
- Voltage - Supply Span (Max):
- 5.5 V
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-70-5
LMV861MGX/NOPB FAQ
1.How can I place an order for LMV861MGX/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LMV861MGX/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 LMV861MGX/NOPB reliable?
The price and inventory of LMV861MGX/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LMV861MGX/NOPB is usually 5 days.
3.What payment methods are accepted for LMV861MGX/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LMV861MGX/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LMV861MGX/NOPB?
LMV861MGX/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LMV861MGX/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 LMV861MGX/NOPB?
For technical support, including LMV861MGX/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LMV861MGX/NOPB requirements.
6.How does Aetrix verify that LMV861MGX/NOPB is sourced from the original manufacturer or authorized distributors?
All LMV861MGX/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 LMV861MGX/NOPB meets industry standards.
7.What is the process for return or replacement of LMV861MGX/NOPB?
All LMV861MGX/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LMV861MGX/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 LMV861MGX/NOPB part is unused and in its original packaging.
Return procedure for LMV861MGX/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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