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Texas Instruments LMV851MG/NOPB
- Part No.:
- LMV851MG/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 5-TSSOP, SC-70-5, SOT-353
- Datasheet:
-
LMV851MG/NOPB.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT SC70-5
- Quantity:
- Payment:
- Shipping:
Inventory:2,704
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Product details
Overview
LMV851MG/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 front-ends near RF sources such as cellular transceivers or Wi-Fi modules.
For engineers reviewing the LMV851MG/NOPB datasheet, LMV851MG/NOPB pinout, LMV851MG/NOPB application, or LMV851MG/NOPB equivalent, this page provides verified specifications, SC70-5 package details, EMI-hardened design context, and validated alternatives for medical diagnostics, portable instrumentation, and piezoelectric sensor interfaces.
Technical Context
The LMV851MG/NOPB employs a CMOS input stage with 0.1 pA typical input bias current and an input common-mode range extending to ground, supporting single-supply operation from 2.7 V to 5.5 V. Its unity-gain stable architecture maintains ≥62° phase margin with capacitive loads up to 200 pF.
EMI hardening is implemented at the transistor and layout level to suppress RF rectification effects at IN+ and IN− pins, delivering 87 dB EMIRR at 1.8 GHz - a measured parameter defined as 20·log(VRFpeak/ΔVOS) under 100 mVP RF injection. This enables direct placement near antennas without external filtering.
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 battery-powered systems without LDO overhead. |
| GBW | 8 MHz - enables stable amplification of kHz-range sensor signals (e.g., piezoelectric, pressure) with ≤1% gain error at 100 kHz. |
| Slew Rate | 4.5 V/µs - ensures faithful reproduction of fast transient signals (e.g., pulse oximetry, ultrasonic echo bursts) without slew-induced distortion. |
| Input Offset Voltage | ±1 mV max - minimizes DC error in precision DC-coupled sensor paths (e.g., bridge-based pressure transducers). |
| EMI Rejection Ratio | 87 dB at 1.8 GHz - reduces RF-induced offset drift to <1 µV under 100 mVP GSM/UMTS band interference. |
| Output Swing | Rail-to-rail - delivers full dynamic range into high-impedance ADC inputs (e.g., SAR or sigma-delta) with no headroom loss. |
| Supply Current | 0.42–0.58 mA per channel - enables >10-year battery life in always-on wearable health monitors using coin cells. |
Pinout & Package
LMV851MG/NOPB is housed in a 5-pin SC70 package (TI package code DCK), measuring 2.0 mm × 1.25 mm × 0.9 mm, with 0.65 mm lead pitch and moisture sensitivity level 1 (MSL-1). The package supports reflow soldering per JEDEC J-STD-020.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Inverting Input (IN−) | Differential input node; accepts signals referenced to ground or virtual ground; EMI-hardened path with matched layout to IN+. |
| 2 | Non-Inverting Input (IN+) | Differential input node; symmetric layout to IN− ensures balanced RF immunity; supports common-mode range down to −0.2 V. |
| 3 | Ground (GND) | Power return reference; must be connected to low-impedance PCB ground plane to maintain EMI performance and PSRR >93 dB. |
| 4 | Output (OUT) | Rail-to-rail voltage source; drives 10 kΩ loads within 7 mV of rails at 3.3 V; stable with ≤200 pF capacitive load. |
| 5 | Positive Supply (V+) | Single-supply input; accepts 2.7–5.5 V; internal regulation ensures consistent biasing across supply range and temperature (−40°C to +125°C). |
Key Features
| Feature | Design Value |
|---|---|
| EMI Hardening | 87 dB rejection at 1.8 GHz eliminates need for external RF filters or shielded enclosures in portable medical devices. |
| Rail-to-Rail Output | Swings within 7 mV of V+ and GND at 3.3 V/10 kΩ - maximizes ADC utilization and avoids signal clipping in low-voltage systems. |
| Ultra-Low Input Bias Current | 0.1 pA typical - prevents loading errors in high-impedance sensor nodes (e.g., photodiode preamps, pH electrodes). |
| Wide Temperature Range | Specified from −40°C to +125°C - enables deployment in automotive cabin sensors and industrial process controllers. |
| Capacitive Load Drive | Stable with up to 200 pF - allows direct connection to long PCB traces or ADC input capacitance without isolation resistors. |
Applications
| Photodiode Preamp | Piezoelectric Sensor Interface |
|---|---|
Use Scenario: Amplifying weak current from silicon photodiodes in pulse oximeters or environmental light sensors. IC Role / Device Role / Timing Role: Transimpedance amplifier with low-noise (11 nV/√Hz), low-bias-current input stage and rail-to-rail output driving 12-bit SAR ADC. Use Value: 0.1 pA input bias current prevents signal loss across MΩ feedback resistors; 87 dB EMIRR rejects ambient RF from nearby Bluetooth radios. |
Use Scenario: Conditioning high-impedance, AC-coupled outputs from vibration or knock sensors in engine control units. IC Role / Device Role / Timing Role: AC-coupled non-inverting amplifier with wide input common-mode range (−0.2 V to 3.8 V at 5 V) and 4.5 V/µs slew rate. Use Value: Input CMVR including ground enables single-supply biasing; 8 MHz GBW preserves resonance peaks up to 100 kHz without phase lag. |
| Portable Medical Diagnostics | Battery-Powered Environmental Monitor |
Use Scenario: Signal conditioning for handheld ECG or glucose meter analog front-ends operating on coin-cell batteries. IC Role / Device Role / Timing Role: Low-power, precision op amp buffering sensor outputs before multiplexing and ADC sampling. Use Value: 0.42 mA supply current extends battery life; 1 mV max VOS ensures accurate baseline measurement without calibration drift. |
Use Scenario: Amplifying microvolt-level outputs from MEMS pressure or gas sensors in wireless IoT nodes. IC Role / Device Role / Timing Role: Single-supply amplifier with 2.7 V minimum operation, driving low-power ADCs in duty-cycled sleep/wake cycles. Use Value: 2.7 V operation enables direct use of partially discharged Li-ion cells; SC70-5 footprint saves board space in compact sensor housings. |
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 I/O. | Better suited for ultra-low-power (<10 µA) sleep modes but insufficient for >100 kHz sensor bandwidths. | Select TLV9001IDBVR only when bandwidth demand is <200 kHz and supply current must be minimized below 0.1 mA. |
| OPA333AIDBVR | Zero-drift architecture, 12 µV max VOS, 350 kHz GBW, 17 µA supply current, same SC70-5 package. | Superior DC precision for thermocouple or strain gauge bridges, but inadequate for dynamic piezoelectric or photodiode signals. | Choose OPA333AIDBVR for DC-stable, low-drift applications where 8 MHz bandwidth is unnecessary and sub-µV offset drift is critical. |
Compared with TLV9001IDBVR and OPA333AIDBVR, LMV851MG/NOPB uniquely balances 8 MHz bandwidth, 0.4 mA supply current, and 87 dB EMI rejection - making it the only option among the three qualified for RF-noisy, battery-powered, medium-bandwidth sensor front-ends.
Availability
LMV851MG/NOPB is available at Aetrix Electronics and suitable for photodiode preamplification, piezoelectric sensor interfacing, and portable medical diagnostics requiring stable component supply across extended temperature ranges and EMI-prone environments.
Supply support for LMV851MG/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 company headquartered in Dallas, Texas, designing and manufacturing analog and embedded processing solutions for industrial, automotive, and personal electronics markets.
The LMV851MG/NOPB belongs to TI's EMI-hardened precision op amp product line, engineered specifically for signal integrity in RF-dense environments such as portable medical devices, automotive cabin sensors, and wireless IoT endpoints.
FAQ
What is the maximum capacitive load the LMV851MG/NOPB can drive without instability?
The LMV851MG/NOPB is unity-gain stable with capacitive loads up to 200 pF, as confirmed in the TI datasheet SNOSAW1A Figure 28 and Section "Output Characteristics". This allows direct connection to ADC input capacitance or long PCB traces without requiring an isolation resistor. For loads exceeding 200 pF, a series resistor (RISO) between the LMV851MG/NOPB output and the load restores stability by isolating the pole.
Does the LMV851MG/NOPB support true rail-to-rail input common-mode voltage range?
No - the LMV851MG/NOPB features rail-to-rail *output*, but its input common-mode voltage range extends from −0.2 V to (V+ − 1.2 V), as specified in the Electrical Characteristics table. At 3.3 V supply, this means the input operates from −0.2 V to 2.1 V; at 5 V, from −0.2 V to 3.8 V. Ground is included, enabling single-supply sensor biasing, but the positive limit is supply-dependent and not rail-to-rail.
What does "EMI hardened" mean for the LMV851MG/NOPB, and how is it quantified?
"EMI hardened" denotes integrated circuit-level design techniques (transistor sizing, layout symmetry, internal filtering) that suppress RF rectification at the input stage. For the LMV851MG/NOPB, this is quantified by the EMI Rejection Ratio (EMIRR): 87 dB at 1.8 GHz, defined as 20·log(VRFpeak/ΔVOS) under 100 mVP RF injection. This value is measured per TI Application Note AN-1698 and ensures minimal offset shift in cellular-band environments.
Is the LMV851MG/NOPB suitable for use with 2.7 V lithium coin cell batteries?
Yes - the LMV851MG/NOPB has a guaranteed minimum supply voltage of 2.7 V and draws only 0.42–0.58 mA at that voltage (per Electrical Characteristics Table). Its rail-to-rail output and input common-mode range including ground allow full signal swing even as the battery discharges from 3.0 V to 2.7 V, making it ideal for long-life coin-cell applications like wearable biosensors or environmental loggers.
How does the LMV851MG/NOPB compare to the LMV821 in terms of EMI performance and bandwidth?
The LMV851MG/NOPB offers significantly superior EMI performance (87 dB EMIRR at 1.8 GHz) versus the LMV821 (unspecified EMIRR, no EMI-hardened designation) and higher bandwidth (8 MHz GBW vs. 2.8 MHz). Both are SC70-5 op amps, but only the LMV851MG/NOPB is characterized and guaranteed for operation in RF-intensive settings such as near cellular antennas or Bluetooth modules - a key differentiator confirmed in TI's LMV85x family documentation.
LMV851MG/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
LMV851MG/NOPB FAQ
1.How can I place an order for LMV851MG/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LMV851MG/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 LMV851MG/NOPB reliable?
The price and inventory of LMV851MG/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LMV851MG/NOPB is usually 5 days.
3.What payment methods are accepted for LMV851MG/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LMV851MG/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LMV851MG/NOPB?
LMV851MG/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LMV851MG/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 LMV851MG/NOPB?
For technical support, including LMV851MG/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LMV851MG/NOPB requirements.
6.How does Aetrix verify that LMV851MG/NOPB is sourced from the original manufacturer or authorized distributors?
All LMV851MG/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 LMV851MG/NOPB meets industry standards.
7.What is the process for return or replacement of LMV851MG/NOPB?
All LMV851MG/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LMV851MG/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 LMV851MG/NOPB part is unused and in its original packaging.
Return procedure for LMV851MG/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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