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Texas Instruments LMV851MGX/NOPB
- Part No.:
- LMV851MGX/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 5-TSSOP, SC-70-5, SOT-353
- Datasheet:
-
LMV851MGX/NOPB.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT SC70-5
- Quantity:
- Payment:
- Shipping:
Inventory:6,572
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Product details
Overview
LMV851MGX/NOPB from Texas Instruments is a single-channel, CMOS-input, rail-to-rail output operational amplifier optimized for EMI-sensitive signal conditioning in low-power systems. It delivers 8 MHz gain-bandwidth, 4.5 V/µs slew rate, 1 mV max input offset voltage, and 87 dB EMI rejection ratio at 1.8 GHz - enabling robust sensor amplification near RF sources such as cellular transceivers or Wi-Fi modules.
For engineers reviewing the LMV851MGX/NOPB datasheet, LMV851MGX/NOPB pinout, LMV851MGX/NOPB application, or LMV851MGX/NOPB equivalent, key selection criteria include its 0.4 mA supply current per channel, −40°C to +125°C operating range, SC70-5 package footprint, and verified immunity to RF interference up to 2.4 GHz without external filtering.
Technical Context
The LMV851MGX/NOPB employs a unity-gain-stable CMOS input stage with input common-mode voltage range extending to ground and beyond (−0.2 V), supporting single-supply operation from 2.7 V to 5.5 V. Its internal compensation enables stable operation with capacitive loads up to 200 pF, eliminating need for external isolation resistors in most sensor buffer configurations.
EMI hardening is implemented at the transistor and layout level to suppress RF rectification at IN+ and IN− pins, validated by EMIRR measurements across 400 MHz–2.4 GHz. The device maintains 92 dB CMRR and 93 dB PSRR over full supply and temperature range, ensuring precision in noisy industrial or portable medical environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 2.7 V to 5.5 V - supports direct connection to Li-ion battery (3.3 V or 3.7 V) or regulated 3.3 V/5 V rails without level shifting. |
| GBW | 8 MHz - enables stable unity-gain buffering of signals up to ~1 MHz with <1% gain error. |
| Slew Rate | 4.5 V/µs - supports 1 VPP output at 100 kHz without distortion in photodiode preamp applications. |
| Input Offset Voltage | ±1 mV max - ensures ≤10 µV error in 10 mV full-scale pressure sensor outputs without trimming. |
| EMIRR @ 1.8 GHz | 87 dB - reduces RF-induced offset drift to <1 µV when exposed to 100 mVP GSM/UMTS carrier signals. |
| Output Swing | Rail-to-rail - delivers >3.2 VPP into 10 kΩ load on 3.3 V supply, maximizing dynamic range in ADC driver stages. |
| Supply Current | 0.42–0.58 mA per channel - enables >10-year battery life in always-on wearable health monitors. |
Pinout & Package
LMV851MGX/NOPB is housed in a 5-pin SC70 package (TI package code DCK0005A), measuring 2.0 mm × 1.25 mm × 0.95 mm, with 0.65 mm pin pitch and wettable flank leads for automated optical inspection.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OUT) | Amplifier output | Capable of sourcing/sinking 30 mA; rail-to-rail swing enables direct interface to SAR ADC reference inputs. |
| 2 (−IN) | Inverting input | CMOS input with 0.1 pA bias current - minimizes leakage error in high-impedance piezoelectric sensor nodes. |
| 3 (V−) | Negative supply | Ground-referenced operation supported; allows single-supply use with V− = 0 V. |
| 4 (+IN) | Non-inverting input | Input common-mode range includes ground (−0.2 V), enabling direct connection to shunt-based current sense circuits. |
| 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 87 dB rejection at 1.8 GHz eliminates need for ferrite beads or RC filters in RF-dense PCB layouts. |
| Rail-to-Rail Output | Delivers ≥3.25 VPP on 3.3 V supply into 10 kΩ, maximizing SNR when driving 12-bit+ ADCs. |
| Low Input Bias Current | 0.1 pA typical enables accurate amplification of nanoamp-level photodiode or ion-selective electrode currents. |
| Wide Temperature Range | Specified from −40°C to +125°C - suitable for under-hood automotive pressure sensing or industrial motor control feedback loops. |
| Capacitive Load Drive | Stable with up to 200 pF directly at output - simplifies design of anti-aliasing filters without isolation resistors. |
Applications
| Photodiode Preamp | Piezoelectric Sensor Interface |
|---|---|
Use Scenario: Amplifying weak current from UV/IR photodiodes in portable gas analyzers exposed to ambient RF. IC Role / Device Role / Timing Role: Transimpedance amplifier with 1 MΩ feedback resistor, providing low-noise gain before 16-bit sigma-delta ADC sampling. Use Value: 11 nV/√Hz input noise and 0.1 pA input bias current preserve signal integrity; EMI hardening prevents false alarms during cellular transmission bursts. | Use Scenario: Conditioning high-impedance charge output from vibration sensors mounted on industrial pumps near variable-frequency drives. IC Role / Device Role / Timing Role: Charge-to-voltage converter with integrated 10× gain, feeding analog front-end of predictive maintenance edge node. Use Value: Input common-mode range including ground allows direct connection to floating piezo elements; 87 dB EMIRR prevents RF-induced baseline wander during 2.4 GHz wireless telemetry. |
| Portable Medical Diagnostics | Battery-Powered Environmental Monitor |
Use Scenario: Amplifying microvolt-level ECG signals in handheld cardiac screening devices operating alongside Bluetooth radios. IC Role / Device Role / Timing Role: Instrumentation-grade buffer isolating electrode inputs from mixed-signal SoC, maintaining DC accuracy and AC fidelity. Use Value: ±1 mV max VOS and 0.4 µV/°C TCVOS ensure calibration stability across body-worn temperature gradients; 0.4 mA supply current extends clinical-use battery life. | Use Scenario: Signal conditioning for MEMS pressure sensors in IoT weather stations deployed near LTE base stations. IC Role / Device Role / Timing Role: Low-drift, low-power gain stage preceding SAR ADC in ultra-low-duty-cycle data loggers. Use Value: 2.7–5.5 V supply range accommodates aging lithium primary cells; 125°C rating ensures reliability in sun-exposed enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV9001IDBVR | Lower GBW (1 MHz), higher supply current (60 µA), same SC70-5 package and rail-to-rail output. | Better for ultra-low-power (<10 µA) sleep modes but insufficient bandwidth for >100 kHz sensor signals. | Select TLV9001IDBVR only if bandwidth demand is <500 kHz and supply current must be <0.1 mA. |
| OPA316IDBVR | Higher precision (50 µV VOS), lower noise (11 nV/√Hz), same 8 MHz GBW and SC70-5 package. | Targeted at precision instrumentation; lacks published EMIRR data above 900 MHz. | Choose OPA316IDBVR when offset-critical DC accuracy outweighs proven 1.8 GHz EMI immunity. |
Compared with TLV9001IDBVR and OPA316IDBVR, LMV851MGX/NOPB uniquely balances 8 MHz bandwidth, 0.4 mA quiescent current, and industry-leading 87 dB EMIRR at 1.8 GHz - making it the only SC70 op amp qualified for RF-noise-critical portable diagnostics and industrial sensing where both speed and immunity are non-negotiable.
Availability
LMV851MGX/NOPB is available at Aetrix Electronics and suitable for photodiode preamplification, piezoelectric sensor interfaces, and portable medical diagnostics requiring stable component supply across extended temperature ranges and high-volume production cycles.
Supply support for LMV851MGX/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 core expertise in precision amplifiers, power management, and signal chain ICs.
The LMV851MGX/NOPB belongs to TI's EMI-hardened op amp family, engineered specifically for reliable signal conditioning in RF-dense environments such as wireless medical devices, automotive cabin sensors, and industrial IoT edge nodes.
FAQ
What is the maximum capacitive load the LMV851MGX/NOPB can drive without external compensation?
The LMV851MGX/NOPB is specified to remain stable with capacitive loads up to 200 pF directly connected to its output pin. This capability eliminates the need for series isolation resistors in typical sensor buffer and filter driver applications, reducing component count and board space. Stability is verified across the full −40°C to +125°C temperature range and 2.7 V to 5.5 V supply voltage range, as documented in the TI SNOSAW1A datasheet Figure 28 and Section "Output Characteristics".
Does the LMV851MGX/NOPB support true rail-to-rail input common-mode voltage range?
The LMV851MGX/NOPB features a rail-to-rail output stage and an input common-mode voltage range that extends to V− (ground) and 0.2 V below it (−0.2 V), but does not reach V+. Its usable input range is −0.2 V to (V+ − 1.2 V) - for example, −0.2 V to 3.8 V on a 5 V supply. This allows ground-referenced sensing while maintaining 76 dB minimum CMRR, as confirmed in the Electrical Characteristics tables for both 3.3 V and 5 V operation.
What is the guaranteed input offset voltage specification for LMV851MGX/NOPB over temperature?
The LMV851MGX/NOPB has a maximum input offset voltage of ±1 mV across the full operating temperature range of −40°C to +125°C, as tested and guaranteed in production. At 25°C, the typical value is ±0.26 mV, and the worst-case drift is ±2 µV/°C. These specifications are explicitly stated in the "3.3V Electrical Characteristics" table (page 2) and "5V Electrical Characteristics" table (page 4) of the SNOSAW1A datasheet, under parameter VOS with boldface limits applying at temperature extremes.
How is EMI rejection quantified for LMV851MGX/NOPB, and at which frequencies is it highest?
EMI rejection for LMV851MGX/NOPB is quantified as EMIRR (EMI Rejection Ratio), defined as 20·log₁₀(VRFpeak/ΔVOS). Measured values are 87 dB at 1.8 GHz and 90 dB at 2.4 GHz under 100 mVP RF peak conditions, per Table 1 on page 3 of the SNOSAW1A datasheet. These figures represent the highest published EMIRR across its validated 400 MHz–2.4 GHz band, confirming superior immunity to LTE, Wi-Fi, and Bluetooth interference.
Is LMV851MGX/NOPB pin-compatible with other members of the LMV85x family?
No, LMV851MGX/NOPB is not pin-compatible with LMV852 or LMV854. It uses the 5-pin SC70 package (DCK), whereas LMV852 uses an 8-pin VSSOP (DGK) and LMV854 uses a 14-pin TSSOP (PW). Pinouts differ fundamentally: LMV851MGX/NOPB has one output, one +IN, one −IN, and two supply pins; dual and quad variants require separate power and output routing. Substitution requires PCB redesign.
LMV851MGX/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:
- 4.5V/µs
- Gain Bandwidth Product:
- 8 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 0.1 pA
- Voltage - Input Offset:
- 260 µV
- Current - Supply:
- 430µA
- Current - Output / Channel:
- 65 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
LMV851MGX/NOPB FAQ
1.How can I place an order for LMV851MGX/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LMV851MGX/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 LMV851MGX/NOPB reliable?
The price and inventory of LMV851MGX/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LMV851MGX/NOPB is usually 5 days.
3.What payment methods are accepted for LMV851MGX/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LMV851MGX/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LMV851MGX/NOPB?
LMV851MGX/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LMV851MGX/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 LMV851MGX/NOPB?
For technical support, including LMV851MGX/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LMV851MGX/NOPB requirements.
6.How does Aetrix verify that LMV851MGX/NOPB is sourced from the original manufacturer or authorized distributors?
All LMV851MGX/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 LMV851MGX/NOPB meets industry standards.
7.What is the process for return or replacement of LMV851MGX/NOPB?
All LMV851MGX/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LMV851MGX/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 LMV851MGX/NOPB part is unused and in its original packaging.
Return procedure for LMV851MGX/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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