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Texas Instruments SM72501MFE/NOPB
- Part No.:
- SM72501MFE/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- SC-74A, SOT-753
- Datasheet:
-
SM72501MFE/NOPB.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:490
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Product details
Overview
SM72501MFE/NOPB from Texas Instruments is a precision CMOS-input, rail-to-rail input/output operational amplifier optimized for high-impedance sensor interfaces and battery-powered instrumentation. It delivers ±200 µV max input offset voltage, ±200 fA input bias current, 9 nV/√Hz input voltage noise, 130 dB CMRR, and operates from 2.7 V to 12 V supply across −40°C to +125°C - enabling accurate signal conditioning in solar monitoring and portable medical sensors.
For engineers reviewing the SM72501MFE/NOPB datasheet, SM72501MFE/NOPB pinout, SM72501MFE/NOPB application, or SM72501MFE/NOPB equivalent, key selection criteria include ultra-low input bias current for photodiode/strain gauge front-ends, rail-to-rail output swing within 40 mV of rails at 3 V, and guaranteed performance over extended industrial temperature range without derating.
Technical Context
The SM72501MFE/NOPB employs a complementary CMOS input stage trimmed on both NMOS and PMOS sides to suppress CMRR glitches common in rail-to-rail amplifiers, achieving ≥130 dB CMRR across 0 V–5 V common-mode range. Its VIP50 process enables simultaneous CMOS input characteristics and 12 V supply capability - a combination unavailable in standard CMOS op-amps.
It features unity-gain-stable operation with 2.5 MHz gain-bandwidth product and 1.1 V/µs slew rate (±5 V supply), supporting precision current source topologies (e.g., Figure 46) and DAC buffering where low THD+N (0.02% @ 1 kHz) and high open-loop gain (≥130 dB) preserve dynamic accuracy.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Offset Voltage | ±200 µV (max) - ensures ≤0.5 mV error in 2.5 V full-scale 12-bit systems without calibration |
| Input Bias Current | ±200 fA (typ) - enables direct connection to >10 GΩ sensors (e.g., pH electrodes, piezoresistive bridges) without signal loss |
| Supply Voltage Range | 2.7 V to 12 V - supports single-supply 3.3 V microcontrollers and dual-supply ±5 V instrumentation without level-shifting |
| Output Swing | Within 40 mV of either rail (RL = 10 kΩ, 3 V supply) - maximizes usable dynamic range in low-voltage battery systems |
| CMRR | 130 dB (min) - rejects >3.16 MV/V common-mode interference in noisy industrial environments |
| Input Voltage Noise | 9 nV/√Hz - preserves SNR in 1 kHz–10 kHz sensor bandwidths; lower than most precision JFET op-amps |
| Operating Temperature | −40°C to +125°C - qualified for under-hood automotive and outdoor solar inverter monitoring |
Pinout & Package
SM72501MFE/NOPB is housed in a 5-pin SOT-23 package (DBV), measuring 2.9 mm × 1.6 mm × 1.15 mm, suitable for space-constrained PCB layouts in portable and distributed sensor nodes.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - IN− | Inverting Input | High-impedance CMOS node; differential input voltage limited to ±300 mV by internal ESD diodes |
| 2 - IN+ | Non-inverting Input | High-impedance CMOS node; input capacitance 25 pF requires careful feedback resistor selection to avoid peaking |
| 3 - V− | Negative Supply Rail | Supports ground-referenced (0 V) or split-supply (e.g., −5 V) operation; absolute max −0.3 V below V− |
| 4 - OUT | Amplifier Output | Rail-to-rail capable; drives ≥42 mA (sourcing/sinking, 5 V supply); stable with ≥10 pF capacitive load when isolated |
| 5 - V+ | Positive Supply Rail | Accepts 2.7 V–12 V; PSRR ≥98 dB minimizes supply ripple coupling into precision outputs |
Key Features
| Feature | Design Value |
|---|---|
| Renewable Energy Grade | Qualified per solar inverter environmental stress profiles; operates reliably at 125°C ambient in PV string monitors |
| Rail-to-Rail Input & Output | CMVR extends to V− − 0.2 V and V+ + 0.2 V; output swings to within 30 mV of rails at 5 V supply |
| Ultra-Low Input Bias Current | ±200 fA typ at 25°C - enables femtoampere-level current measurement in photodiode transimpedance amps |
| Low Input Voltage Noise | 9 nV/√Hz at 1 kHz - outperforms most precision bipolar op-amps in medium-bandwidth sensor applications |
| Wide Supply Range | 2.7 V–12 V operation eliminates need for LDOs in multi-rail systems; maintains specs across full range |
Applications
| Solar Panel String Monitoring | Portable Medical Sensor Front-End |
|---|---|
|
Use Scenario: Measuring millivolt-level voltage differentials across shunt resistors in photovoltaic string combiners under variable irradiance and temperature. IC Role / Device Role / Timing Role: Precision current-sense amplifier in a two-op-amp Howland current source topology (Figure 46), rejecting common-mode voltage up to ±500 V. Use Value: ±200 µV offset and 130 dB CMRR ensure <0.1% gain error across −40°C to +85°C, eliminating recalibration in field-deployed inverters. |
Use Scenario: Amplifying weak bio-potential signals (e.g., ECG, EEG) from dry electrodes with high source impedance (>1 MΩ). IC Role / Device Role / Timing Role: First-stage instrumentation amplifier buffer with ultra-low input bias current to prevent electrode polarization and DC drift. Use Value: ±200 fA bias current prevents >100 mV baseline shift over 10 s in 1 MΩ || 100 pF electrode interface, preserving diagnostic waveform fidelity. |
| Battery-Powered Environmental Logger | High-Gain Strain Gauge Interface |
|
Use Scenario: Conditioning outputs from low-power MEMS temperature/humidity sensors in wireless IoT nodes powered by coin cells. IC Role / Device Role / Timing Role: Rail-to-rail output buffer for 12-bit SAR ADC reference and sensor signal chain, operating from 3.0 V nominal supply. Use Value: 715 µA supply current and 40 mV output headroom at 3 V enable >5-year battery life while maintaining full 0–3 V ADC input range. |
Use Scenario: Amplifying Wheatstone bridge outputs from metal foil strain gauges in structural health monitoring systems. IC Role / Device Role / Timing Role: Low-noise, low-drift gain stage with matched input bias currents minimizing thermal EMF errors in bridge arms. Use Value: 9 nV/√Hz noise density and ±5 µV/°C offset drift ensure <5 µε resolution at 1 kHz bandwidth without active temperature compensation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA333AIDBVR | Lower max offset (10 µV), but only 5.5 V max supply and −40°C to +125°C rating not validated for continuous 125°C operation | Better for low-voltage (<5.5 V) battery systems; unsuitable for 12 V solar string monitors requiring full-range 125°C qualification | Select OPA333AIDBVR only if supply ≤5.5 V and 125°C continuous operation is not required |
| LTC2050CS5#TRMPBF | Zero-drift architecture; 0.5 µV max offset, but higher 1.1 mA supply current and 1.5 MHz GBW limits bandwidth-critical designs | Superior DC accuracy for static measurements; less suitable for AC-coupled sensor signals above 500 kHz | Choose LTC2050CS5#TRMPBF when sub-microvolt offset dominates system error budget and power is secondary |
Compared with OPA333AIDBVR and LTC2050CS5#TRMPBF, SM72501MFE/NOPB uniquely balances 12 V operation, 125°C continuous rating, ultra-low bias current, and 2.5 MHz bandwidth - making it the only option qualified for high-voltage renewable energy sensing where all four parameters are simultaneously critical.
Availability
SM72501MFE/NOPB is available at Aetrix Electronics and suitable for solar panel monitoring, portable medical instrumentation, battery-powered environmental loggers, and high-impedance strain gauge interfaces requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for SM72501MFE/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 precision signal chain solutions for industrial, automotive, and renewable energy markets.
The SM72501MFE/NOPB belongs to TI's SolarMagic precision amplifier family, engineered specifically for high-reliability, wide-temperature, high-impedance sensor signal conditioning in photovoltaic monitoring and distributed energy systems.
FAQ
What is the maximum supply voltage rating for SM72501MFE/NOPB?
The absolute maximum supply voltage (V+ − V−) for SM72501MFE/NOPB is 13.2 V, with recommended operating range specified from 2.7 V to 12 V. Operation beyond 12 V voids parametric guarantees per the datasheet's Operating Ratings table; sustained use at 13.2 V risks accelerated parametric drift or latent failure.
Does SM72501MFE/NOPB support true rail-to-rail input common-mode range?
Yes - SM72501MFE/NOPB supports rail-to-rail input with common-mode voltage range extending to V− − 0.2 V and V+ + 0.2 V (e.g., −0.2 V to 5.2 V at 5 V supply), maintaining ≥80 dB CMRR across this full range. This enables direct interfacing with sensors referenced to either supply rail without level-shifting circuitry.
Can SM72501MFE/NOPB drive capacitive loads directly?
SM72501MFE/NOPB is stable with ≤10 pF capacitive load in unity-gain configuration. For larger loads (e.g., ADC inputs, cables), an isolation resistor (RISO) must be placed between OUT and the load per Figure 41. Typical RISO values range from 10 Ω to 100 Ω depending on CL; omitting RISO risks oscillation or overshoot.
What is the input protection scheme on SM72501MFE/NOPB?
SM72501MFE/NOPB integrates anti-parallel ESD diodes between IN+ and IN− (Figure 45), limiting differential input voltage to ±300 mV. Exceeding this risks diode conduction and potential damage. External series resistors are mandatory when interfacing with signals exceeding ±300 mV differential or ±10 mA input current.
Is SM72501MFE/NOPB pin-compatible with other SOT-23 op-amps?
No - SM72501MFE/NOPB uses a non-standard 5-pin SOT-23 pinout (IN−, IN+, V−, OUT, V+) that differs from industry-standard pinouts like the LMV321 (IN+, IN−, V−, V+, OUT). Direct replacement requires PCB layout revision; no pin-compatible alternatives exist in TI's portfolio for this specific feature set.
SM72501MFE/NOPB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- SolarMagic™
- Package/Case:
- SC-74A, SOT-753
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Not For New Designs
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 1
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 1.1V/µs
- Gain Bandwidth Product:
- 2.5 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 0.2 pA
- Voltage - Input Offset:
- 37 µV
- Current - Supply:
- 790µA
- Current - Output / Channel:
- 86 mA
- Voltage - Supply Span (Min):
- 2.7 V
- Voltage - Supply Span (Max):
- 12 V
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-5
SM72501MFE/NOPB FAQ
1.How can I place an order for SM72501MFE/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for SM72501MFE/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 SM72501MFE/NOPB reliable?
The price and inventory of SM72501MFE/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SM72501MFE/NOPB is usually 5 days.
3.What payment methods are accepted for SM72501MFE/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SM72501MFE/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SM72501MFE/NOPB?
SM72501MFE/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SM72501MFE/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 SM72501MFE/NOPB?
For technical support, including SM72501MFE/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SM72501MFE/NOPB requirements.
6.How does Aetrix verify that SM72501MFE/NOPB is sourced from the original manufacturer or authorized distributors?
All SM72501MFE/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 SM72501MFE/NOPB meets industry standards.
7.What is the process for return or replacement of SM72501MFE/NOPB?
All SM72501MFE/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with SM72501MFE/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 SM72501MFE/NOPB part is unused and in its original packaging.
Return procedure for SM72501MFE/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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