My Inquiry
My Account
Texas Instruments LMV831MGX/NOPB
- Part No.:
- LMV831MGX/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 5-TSSOP, SC-70-5, SOT-353
- Datasheet:
-
LMV831MGX/NOPB.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT SC70-5
- Quantity:
- Payment:
- Shipping:
Inventory:47,032
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
LMV831MGX/NOPB from Texas Instruments is a single-channel, rail-to-rail output, low-power CMOS operational amplifier optimized for EMI-sensitive signal conditioning in precision sensor interfaces. It delivers 3.3-MHz gain-bandwidth, 240-µA supply current per channel, 1-mV max input offset voltage, 12 nV/√Hz input voltage noise at 1 kHz, and 120-dB EMI rejection ratio at 1.8 GHz - enabling robust photodiode preamplification and piezoelectric sensor front-ends in portable medical and industrial equipment.
For engineers reviewing the LMV831MGX/NOPB datasheet, LMV831MGX/NOPB pinout, LMV831MGX/NOPB application, or LMV831MGX/NOPB equivalent, key selection criteria include its EMI-hardened architecture, −40°C to +125°C operating range, SC70-5 package footprint, and verified performance under RF interference up to 2.4 GHz without external filtering.
Technical Context
The LMV831MGX/NOPB employs a CMOS input stage with 0.1-pA typical input bias current and rail-to-rail output swing, supporting ground-sensing operation across a 2.7-V to 5.5-V supply. Its unity-gain stable architecture maintains phase margin ≥65° with capacitive loads up to 200 pF, and achieves 91-dB CMRR and 93-dB PSRR at 25°C.
EMI hardening is implemented via on-chip RF rejection circuitry that suppresses induced offset shifts from interfering RF sources - quantified as EMIRR = 20·log(VRF_PEAK/ΔVOS) - delivering 120 dB rejection at 1.8 GHz and 110 dB at 900 MHz, directly reducing system-level shielding requirements in wireless-adjacent designs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 2.7 V to 5.5 V - supports direct integration into 3.3-V and 5-V systems without level-shifting. |
| Supply Current | 240 µA per channel - enables multi-channel battery-powered instrumentation with >1-year runtime on coin cells. |
| Input Offset Voltage | ±1 mV maximum - ensures ≤0.02% gain error in 100-mV full-scale sensor signal chains. |
| Gain Bandwidth | 3.3 MHz - supports closed-loop bandwidths up to ~300 kHz with gain of 10, suitable for anti-aliasing filters. |
| EMI Rejection Ratio | 120 dB at 1.8 GHz - attenuates mobile phone RF bursts by 1 million×, eliminating need for external ferrite beads. |
| Operating Temperature | −40°C to +125°C - qualified for under-hood automotive, industrial motor control, and outdoor IoT sensor nodes. |
| Output Drive | 30 mA sourcing/sinking - drives 10-kΩ loads to rails with <10-mV headroom, enabling direct ADC interface. |
Pinout & Package
The LMV831MGX/NOPB is housed in a 5-pin SC70 package (1.25 mm × 2.00 mm), optimized for space-constrained PCB layouts in portable electronics and sensor modules.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - IN+ | Noninverting Input | High-impedance CMOS node (0.1 pA bias) for precision differential sensing; includes EMI-hardened input filtering. |
| 2 - V− | Negative Supply | Ground reference terminal; supports single-supply operation with input common-mode range extending to V−. |
| 3 - IN− | Inverting Input | Differential input paired with IN+; matched layout critical for CMRR >91 dB over temperature. |
| 4 - OUTPUT | Amplifier Output | Rail-to-rail output stage capable of sourcing/sinking 30 mA; stable driving 200-pF capacitive loads. |
| 5 - V+ | Positive Supply | Primary power rail; PSRR of 93 dB minimizes supply ripple coupling into output signal. |
Key Features
| Feature | Design Value |
|---|---|
| EMI-Hardened Architecture | On-die RF rejection circuitry reduces offset shift from 400 MHz–2.4 GHz interference, validated per JEDEC JESD22-C101-C. |
| Rail-to-Rail Output | Swings within 6 mV of rails at 10-kΩ load, preserving dynamic range when interfacing with 12-bit+ SAR ADCs. |
| Ultra-Low Input Bias Current | 0.1 pA typical enables high-Z sensor interfaces (e.g., piezoelectric, pH electrodes) without signal degradation. |
| Wide Supply Range | 2.7 V to 5.5 V operation allows drop-in use across legacy 3.3-V and modern 5-V industrial control platforms. |
| High Temp Performance | Specified offset drift ≤1.5 µV/°C and supply current ≤310 µA at 125°C ensures reliability in thermally aggressive environments. |
Applications
| Photodiode Preamp | Piezoelectric Sensor Interface |
|---|---|
Use Scenario: Amplifying weak current signals from ambient light sensors in wearable health monitors. IC Role / Device Role / Timing Role: Transimpedance amplifier converting photodiode current to voltage with minimal noise and EMI-induced baseline drift. Use Value: 12 nV/√Hz input noise and 120-dB EMIRR at 1.8 GHz enable sub-100-nA detection thresholds without metal shielding. | Use Scenario: Conditioning high-impedance charge output from vibration sensors in predictive maintenance edge nodes. IC Role / Device Role / Timing Role: Low-bias-current voltage follower buffering piezoelectric element output before analog filtering. Use Value: 0.1-pA input bias prevents signal decay during low-frequency (<1 Hz) acceleration measurements. |
| Portable Medical Instrumentation | Industrial Process Monitoring |
Use Scenario: Signal conditioning in handheld blood glucose meters powered by CR2032 batteries. IC Role / Device Role / Timing Role: Precision buffer and filter driver ensuring stable 16-bit ADC reference integrity amid RF-rich clinical environments. Use Value: 240-µA quiescent current extends battery life beyond 2 years; EMI hardening eliminates false readings near Wi-Fi routers. | Use Scenario: Analog front-end for pressure transducers in factory-floor PLC I/O modules exposed to VFD noise. IC Role / Device Role / Timing Role: Low-drift amplifier rejecting common-mode noise from 4–20 mA loop wiring and nearby switching transients. Use Value: 91-dB CMRR and −40°C to +125°C rating ensure accuracy across uncontrolled ambient conditions. |
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 0.3-mV max offset but higher 550-µA supply current; no published EMIRR spec above 1 GHz. | Better DC precision in low-speed data loggers; unsuitable for RF-noisy wireless gateways. | Select TLV9001IDCKR only if EMI immunity is not required and lower offset dominates design priority. |
| OPA333AIDBVR | Zero-drift architecture achieves 2-µV max offset and 0.02-µV/°C drift, but 17-µA supply current and no EMI hardening. | Ideal for ultra-stable DC-coupled strain gauge bridges; cannot replace LMV831MGX/NOPB in RF-exposed sensor nodes. | Choose OPA333AIDBVR for microvolt-level stability where RF is absent; avoid in cellular/Wi-Fi proximity. |
Compared with TLV9001IDCKR and OPA333AIDBVR, the LMV831MGX/NOPB uniquely balances ultra-low power, industry-leading EMI rejection, and wide temperature operation - making it the only option among the three qualified for battery-powered, RF-immune sensor front-ends in harsh environments.
Availability
LMV831MGX/NOPB is available at Aetrix Electronics and suitable for photodiode preamplifiers, piezoelectric sensor interfaces, and portable medical instrumentation requiring stable component supply across extended product lifecycles.
Supply support for LMV831MGX/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 connectivity solutions for industrial, automotive, and consumer markets.
The LMV83x family was engineered specifically for EMI-resilient signal conditioning in sensor front-ends - prioritizing RF immunity, rail-to-rail output, and low quiescent current without sacrificing AC performance.
FAQ
What is the maximum capacitive load the LMV831MGX/NOPB can drive while maintaining stability?
The LMV831MGX/NOPB is unity-gain stable and maintains phase margin ≥65° with capacitive loads up to 200 pF, as confirmed in the datasheet's Typical Characteristics (Figure 25). This allows direct driving of ADC input capacitance or long PCB traces without external isolation resistors - a key advantage over many general-purpose op-amps requiring compensation networks.
Does the LMV831MGX/NOPB support true single-supply operation with input signals down to ground?
Yes, the LMV831MGX/NOPB features an input common-mode voltage range that includes the negative rail (V−), enabling true single-supply operation with inputs referenced to ground. At 3.3-V supply, the specified CMVR is −0.1 V to 2.1 V, and at 5-V supply it extends to −0.1 V to 3.8 V - critical for interfacing with grounded sensors like thermistors or bridge circuits.
How does the EMI rejection ratio of the LMV831MGX/NOPB compare at different RF frequencies?
The LMV831MGX/NOPB achieves 120 dB EMIRR at 1.8 GHz and 2.4 GHz, 110 dB at 900 MHz, and 90 dB at 400 MHz - all measured with 100-mVPEAK RF injection. This frequency-dependent roll-off reflects its optimized on-die filtering, making it especially effective against LTE/5G and Wi-Fi 2.4-GHz band interference commonly found in modern IoT deployments.
What is the output voltage swing capability of the LMV831MGX/NOPB into a 10-kΩ load?
At 3.3-V supply and 25°C, the LMV831MGX/NOPB delivers rail-to-rail output swing within 6–8 mV of each rail into a 10-kΩ load (per Electrical Characteristics Table 6.5). At 125°C, this degrades to ≤10 mV from rails - sufficient to preserve >99.5% of full-scale dynamic range when driving 12-bit or higher-resolution ADCs.
Is the LMV831MGX/NOPB pin-compatible with other members of the LMV83x family?
No - the LMV831MGX/NOPB uses a 5-pin SC70 package, while the LMV832 (dual) uses an 8-pin VSSOP and the LMV834 (quad) uses a 14-pin TSSOP. Pin counts, footprints, and pin functions differ across the family; only the LMV831 variants (e.g., LMV831MFX/NOPB in SOT-23-5) share identical pinout and package dimensions with LMV831MGX/NOPB.
LMV831MGX/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:
- -
- Slew Rate:
- 2V/µs
- Gain Bandwidth Product:
- 3.3 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 0.1 pA
- Voltage - Input Offset:
- 250 µV
- Current - Supply:
- 250µA
- Current - Output / Channel:
- 66 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
LMV831MGX/NOPB FAQ
1.How can I place an order for LMV831MGX/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LMV831MGX/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 LMV831MGX/NOPB reliable?
The price and inventory of LMV831MGX/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LMV831MGX/NOPB is usually 5 days.
3.What payment methods are accepted for LMV831MGX/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LMV831MGX/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LMV831MGX/NOPB?
LMV831MGX/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LMV831MGX/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 LMV831MGX/NOPB?
For technical support, including LMV831MGX/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LMV831MGX/NOPB requirements.
6.How does Aetrix verify that LMV831MGX/NOPB is sourced from the original manufacturer or authorized distributors?
All LMV831MGX/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 LMV831MGX/NOPB meets industry standards.
7.What is the process for return or replacement of LMV831MGX/NOPB?
All LMV831MGX/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LMV831MGX/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 LMV831MGX/NOPB part is unused and in its original packaging.
Return procedure for LMV831MGX/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LMV831MGX/NOPB Tags
-
LM358DT
STMicroelectronics
-
LM358DR
Texas Instruments
-
LM2904DR
Texas Instruments
-
LM358ADR
Texas Instruments
-
LM2904DGKR
Texas Instruments
-
LM324DR
Texas Instruments
-
MCP6006T-E/OT
Microchip Technology
-
MCP6006UT-E/OT
Microchip Technology
-
LM324PWR
Texas Instruments
-
LM2902PWR
Texas Instruments
-
LM2902DR
Texas Instruments
-
LM358P
Texas Instruments
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
