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Texas Instruments LMV551MF/NOPB
- Part No.:
- LMV551MF/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- SC-74A, SOT-753
- Datasheet:
-
LMV551MF/NOPB.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:1,728
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Product details
Overview
LMV551MF/NOPB from Texas Instruments is a single-channel, rail-to-rail output, micropower operational amplifier in a 5-pin SOT-23 package. It delivers 3 MHz unity-gain bandwidth with only 37 µA supply current per amplifier, supports 2.7 V to 5.5 V operation, and features 93 dB CMRR and 1 V/µs slew rate - enabling precision signal conditioning in ultra-low-power battery-powered sensor front-ends.
For engineers reviewing the LMV551MF/NOPB datasheet, LMV551MF/NOPB pinout, LMV551MF/NOPB application, or LMV551MF/NOPB equivalent, key selection considerations include its verified rail-to-rail output swing (70 mV from rail at 5 V, 100 kΩ), −40°C to +125°C automotive-grade temperature range, and low 70 nV/√Hz input voltage noise - critical for portable instrumentation and high-accuracy analog sensing.
Technical Context
The LMV551MF/NOPB employs TI's VIP50 process to achieve exceptional bandwidth-to-power efficiency (3 MHz / 37 µA). Its input stage extends below ground, supporting true single-supply operation with common-mode range from V− to (V+ − 1.2 V) at 5 V. The amplifier is unity-gain stable but requires external compensation when driving >100 pF capacitive loads.
It exhibits flatband input voltage noise of 70 nV/√Hz and a low 1/f corner at 4 Hz - optimized for low-frequency sensor amplification. Output swing is specified down to 70 mV from either rail under 100 kΩ load at 5 V, and large-signal transient response shows minimal overshoot with proper layout and bypassing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Current | 37 µA per amplifier - enables multi-year battery life in always-on sensor nodes |
| Unity-Gain Bandwidth | 3 MHz - supports audio-band filtering and fast step-response in portable medical devices |
| Input Offset Voltage | 3 mV max at 25°C - suitable for DC-coupled sensor interfaces without trimming |
| CMRR | 93 dB - rejects common-mode noise in noisy industrial or automotive environments |
| Output Swing (100 kΩ) | 70 mV from rail at 5 V - maximizes dynamic range in single-supply 3.3 V or 5 V systems |
| Input Voltage Noise | 70 nV/√Hz at 1 kHz - outperforms typical micropower op amps for low-frequency precision |
| Operating Temp Range | −40°C to +125°C - qualified for under-hood automotive and industrial control applications |
Pinout & Package
LMV551MF/NOPB is packaged in a 5-pin SOT-23 (DBV) with body size 2.90 mm × 1.60 mm, optimized for space-constrained PCB layouts and high-density sensor modules.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | +IN | Noninverting input - accepts ground-referenced or single-ended sensor signals |
| 2 | V− | Negative supply terminal - connects to GND in single-supply configurations |
| 3 | −IN | Inverting input - used for feedback network connection in standard gain configurations |
| 4 | OUT | Amplified output - rail-to-rail capable, drives 100 kΩ loads within 70 mV of supply rails |
| 5 | V+ | Positive supply terminal - operates from 2.7 V to 5.5 V; decoupling capacitor required |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail output | Swings within 70 mV of V+ and V− at 5 V/100 kΩ - preserves full ADC input range in 3.3 V systems |
| Ground-sensing input | Common-mode range includes V− - enables direct interfacing with 0 V-referenced sensors |
| Low 1/f noise corner | 4 Hz - ensures stable DC accuracy in slow-sampling applications like environmental monitoring |
| Unity-gain stable | No external compensation needed for gains ≥1 - simplifies design of buffer and gain stages |
| Ultra-small footprint | SOT-23 (2.9 × 1.6 mm) - reduces board area by >50% vs SOIC-8 alternatives |
Applications
| Portable Medical Sensors | Automotive Cabin Sensors |
|---|---|
Use Scenario: Amplifying low-level thermistor or ECG electrode signals in wearable health monitors. IC Role / Device Role / Timing Role: Precision DC-coupled signal conditioner with rail-to-rail output driving 12-bit SAR ADC inputs. Use Value: 37 µA quiescent current extends coin-cell battery life beyond 3 years; 70 nV/√Hz noise ensures <1 µV RMS input-referred noise over 0.1–10 Hz band. |
Use Scenario: Signal conditioning for cabin temperature, humidity, and CO₂ sensors in automotive HVAC modules. IC Role / Device Role / Timing Role: Single-supply front-end amplifier operating from 5 V vehicle bus with −40°C to +125°C ambient tolerance. Use Value: Verified operation across full automotive temperature range eliminates need for thermal derating; 93 dB CMRR rejects ignition noise coupling. |
| Industrial Battery-Powered IoT Nodes | Low-Power Active Filters |
Use Scenario: Analog front-end for wireless vibration or pressure sensors deployed in remote industrial assets. IC Role / Device Role / Timing Role: Micropower transducer interface amplifier with sleep-mode compatible shutdown capability. Use Value: 3 MHz bandwidth supports anti-aliasing filter design up to 100 kHz; 2.7 V minimum supply enables operation directly from Li-SOCl₂ primary cells. |
Use Scenario: Second-order Sallen-Key low-pass filter in portable audio or data acquisition systems. IC Role / Device Role / Timing Role: Unity-gain stable, low-noise op amp implementing filter transfer function with minimal phase distortion. Use Value: 3 MHz GBW ensures filter cutoff accuracy within ±0.5% at 100 kHz; rail-to-rail output prevents clipping during transient overload. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP6001T-I/OT | Lower bandwidth (1 MHz), higher supply current (100 µA), same SOT-23-5 package | Less suitable for >100 kHz signal paths; better for cost-sensitive, lower-speed sensor buffers | Choose MCP6001T-I/OT if bandwidth <1 MHz suffices and higher quiescent current is acceptable |
| TSV611ILT | Similar 3 MHz bandwidth, lower supply current (32 µA), but only 85 dB CMRR and −40°C to +85°C rating | Not qualified for automotive under-hood use; reduced noise rejection in electrically noisy environments | Choose TSV611ILT only for commercial-temperature consumer applications where CMRR >90 dB is not required |
Compared with MCP6001T-I/OT and TSV611ILT, LMV551MF/NOPB uniquely combines automotive temperature range, 93 dB CMRR, and 3 MHz bandwidth at 37 µA - making it the only option among the three qualified for precision, noise-immune, wide-temperature sensor front-ends.
Availability
LMV551MF/NOPB is available at Aetrix Electronics and suitable for portable medical sensors, automotive cabin sensors, and industrial battery-powered IoT nodes requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for LMV551MF/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 specializing in analog and embedded processing technologies, with decades of expertise in high-reliability op amp design and automotive qualification.
LMV551MF/NOPB belongs to TI's LMV55x micropower RRO amplifier family, engineered specifically for ultra-low-power, wide-bandwidth signal conditioning in battery-operated and automotive-sensor applications.
FAQ
What is the maximum capacitive load the LMV551MF/NOPB can drive without external compensation?
The LMV551MF/NOPB remains stable with capacitive loads ≤100 pF. Beyond that, phase margin degrades significantly - e.g., 42° at 100 pF and 40° at 150 pF per TI's characterization. For loads >100 pF, external compensation (e.g., isolation resistor or in-loop RC network) is required to maintain stability. LMV551MF/NOPB datasheet Figure 26 and Table 1 provide validated compensation values.
Does the LMV551MF/NOPB support true single-supply operation with input signals at ground potential?
Yes. The LMV551MF/NOPB features an input common-mode range extending to V− (GND in single-supply setups), enabling direct amplification of 0 V-referenced sensor outputs such as thermistors or bridge transducers. This is confirmed in Section 6.5 CMVR specification (0 V to 4.1 V at 5 V supply) and Functional Description Section 7.3.4.
What is the typical output voltage swing of the LMV551MF/NOPB at 3.3 V supply?
At 3.3 V supply and 100 kΩ load, LMV551MF/NOPB delivers typical output swing within 70 mV of each rail - i.e., ~0.07 V to ~3.23 V. This is extrapolated from the 5 V test data (70 mV from rail) and confirmed by Figure 22/23 in the datasheet showing monotonic rail approach across 2.7–5.5 V. Performance is guaranteed per Electrical Characteristics Table 6.5/6.6.
Is the LMV551MF/NOPB pin-compatible with other members of the LMV55x family?
No. LMV551MF/NOPB (5-pin SOT-23) has a different pin count and assignment than LMV552 (8-pin VSSOP) and LMV554 (14-pin TSSOP). While functional behavior is consistent across the family, PCB layout and routing must be redesigned for each variant. Pin compatibility applies only within identical package types - e.g., LMV551MF/NOPB and LMV551IDCKR (SC70) share identical pinout.
What packaging options are available for the LMV551MF/NOPB?
LMV551MF/NOPB is exclusively offered in the 5-pin SOT-23 (DBV) package per TI's official orderable addendum. The SC70-5 variant is designated LMV551IDCKR - a distinct part number with identical electrical specs but smaller 2.00 mm × 1.25 mm footprint. LMV551MF/NOPB itself is not available in SC70, SOIC, or any other package.
LMV551MF/NOPB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- SC-74A, SOT-753
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 1
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 1V/µs
- Gain Bandwidth Product:
- 3 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 20 nA
- Voltage - Input Offset:
- 1 mV
- Current - Supply:
- 37µA
- Current - Output / Channel:
- 25 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:
- SOT-23-5
LMV551MF/NOPB FAQ
1.How can I place an order for LMV551MF/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LMV551MF/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 LMV551MF/NOPB reliable?
The price and inventory of LMV551MF/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LMV551MF/NOPB is usually 5 days.
3.What payment methods are accepted for LMV551MF/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LMV551MF/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LMV551MF/NOPB?
LMV551MF/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LMV551MF/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 LMV551MF/NOPB?
For technical support, including LMV551MF/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LMV551MF/NOPB requirements.
6.How does Aetrix verify that LMV551MF/NOPB is sourced from the original manufacturer or authorized distributors?
All LMV551MF/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 LMV551MF/NOPB meets industry standards.
7.What is the process for return or replacement of LMV551MF/NOPB?
All LMV551MF/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LMV551MF/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 LMV551MF/NOPB part is unused and in its original packaging.
Return procedure for LMV551MF/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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