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Texas Instruments LMP7715MFX
- Part No.:
- LMP7715MFX
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- SC-74A, SOT-753
- Datasheet:
-
LMP7715MFX.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:4,433
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Product details
Overview
LMP7715MFX from Texas Instruments is a single-channel, rail-to-rail output, precision CMOS operational amplifier optimized for low-noise, low-offset sensor signal conditioning and portable instrumentation. It delivers 17 MHz gain bandwidth, ±150 μV max input offset voltage, 5.8 nV/√Hz input voltage noise at 1 kHz, 100 fA input bias current, and operates from 1.8 V to 5.5 V supply - enabling high-fidelity amplification in battery-powered medical sensors and precision analog front-ends.
For engineers reviewing the LMP7715MFX datasheet, LMP7715MFX pinout, LMP7715MFX application, or LMP7715MFX equivalent, this page provides verified specifications, validated SOT-23 package details, confirmed rail-to-rail output swing within 25 mV of rails, and two rigorously cross-referenced alternative op-amps for low-noise, low-voltage precision designs.
Technical Context
The LMP7715MFX employs a CMOS input stage on TI's VIP50 process to achieve ultra-low input bias current (100 fA) and low input voltage noise (5.8 nV/√Hz), making it suitable for high-impedance source interfacing. Its 17 MHz gain bandwidth product supports stable closed-loop operation up to ~10 MHz with moderate gains.
It features rail-to-rail output swing (25 mV from either rail at 2 kΩ load), wide common-mode input range extending 300 mV below ground, and operates across −40°C to +125°C. The device is unidirectional (single-channel) and not internally compensated for unity-gain stability with capacitive loads >120 pF.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain Bandwidth Product | 17 MHz - enables accurate amplification at closed-loop gains up to ~10× with usable bandwidth above 1 MHz. |
| Input Offset Voltage (max) | ±150 μV - ensures <0.03% error in 5 V full-scale systems without trimming. |
| Input Voltage Noise Density | 5.8 nV/√Hz at 1 kHz - preserves SNR in low-level sensor signals (e.g., thermopiles, strain gauges). |
| Input Bias Current (max) | 100 fA - minimizes voltage error across high-value feedback networks (>10 MΩ) and photodiode applications. |
| Supply Voltage Range | 1.8 V to 5.5 V - supports direct integration into Li-ion (3.0–4.2 V), coin-cell (1.8–3.0 V), and 3.3 V/5 V systems. |
| Rail-to-Rail Output Swing | Within 25 mV of either rail (at 2 kΩ) - maximizes dynamic range in low-voltage, single-supply configurations. |
| Operating Temperature | −40°C to +125°C - qualified for industrial and automotive under-hood sensor interfaces. |
Pinout & Package
Package: 5-pin SOT-23 (small-outline transistor), surface-mount, JEDEC MO-178AA compliant, 2.9 mm × 1.6 mm footprint, 1.0 mm height.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Inverting Input (−IN) | High-impedance CMOS node; connects to feedback network or transimpedance resistor. |
| 2 | Non-Inverting Input (+IN) | High-impedance CMOS node; referenced to bias voltage or sensor ground in single-supply setups. |
| 3 | Output (OUT) | Rail-to-rail capable output driving ≤2 kΩ loads; requires isolation resistor for >120 pF capacitive loads. |
| 4 | Ground (V−) | Power return path; must be low-impedance and decoupled near pin with 0.1 μF ceramic capacitor. |
| 5 | Supply (V+) | Positive supply input; accepts 1.8–5.5 V; requires local 0.1 μF ceramic bypass capacitor. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low input bias current | 100 fA maximum - eliminates significant DC error in high-Z sensor interfaces (e.g., pH electrodes, piezoelectric sensors). |
| Low input voltage noise | 5.8 nV/√Hz at 1 kHz - maintains signal integrity in precision amplification of microvolt-level outputs (e.g., RTDs, thermocouples). |
| Rail-to-rail output swing | 25 mV from each rail at 2 kΩ - enables full utilization of ADC input range in 1.8 V or 3.3 V data acquisition systems. |
| Wide supply voltage range | 1.8 V to 5.5 V - allows direct operation from single-cell batteries or regulated low-voltage rails without level-shifting. |
| Extended temperature range | −40°C to +125°C - supports deployment in harsh environments including automotive cabin and industrial control cabinets. |
Applications
| Medical Sensor Front-End | Portable Gas Detector Signal Chain |
|---|---|
|
Use Scenario: Amplifying sub-millivolt output from electrochemical gas sensors in handheld analyzers powered by 3.7 V Li-ion batteries. IC Role / Device Role / Timing Role: Precision transimpedance amplifier converting nanoamp-level sensor current to clean voltage signal for 16-bit SAR ADC. Use Value: 100 fA input bias current prevents baseline drift; 5.8 nV/√Hz noise ensures detection of <1 ppm gas concentration changes. |
Use Scenario: Conditioning low-amplitude signals from MEMS-based infrared CO₂ detectors operating on 2.0 V coin-cell power. IC Role / Device Role / Timing Role: Low-noise, rail-to-rail buffer and gain stage preceding anti-aliasing filter and ADC. Use Value: 1.8 V minimum supply enables direct battery connection; 25 mV output headroom preserves full 2 V ADC range. |
| Industrial Thermopile Interface | Automotive Cabin Temperature Sensor |
|
Use Scenario: Amplifying microvolt-level thermopile outputs in HVAC control modules with ambient temperatures up to 85°C. IC Role / Device Role / Timing Role: High-precision, low-drift instrumentation amplifier front-end with external gain resistors. Use Value: ±150 μV max offset and ±4 μV/°C drift minimize calibration burden over full industrial temperature range. |
Use Scenario: Signal conditioning for NTC thermistors in automotive climate control systems exposed to −40°C to +125°C ambient. IC Role / Device Role / Timing Role: Single-supply, rail-to-rail op-amp configured as precision voltage follower and level shifter. Use Value: Guaranteed operation at −40°C to +125°C and 1.8 V supply supports cold-cranking and under-dash thermal conditions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision, low-noise, low-input-bias op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA376AIDBVR | Lower input voltage noise (4.6 nV/√Hz), higher quiescent current (760 μA vs. 1.15 mA), same SOT-23-5 package. | Better for ultra-low-noise audio or metrology; less suitable for battery life-critical portable devices. | Select OPA376AIDBVR when noise dominates budget and supply current is secondary. |
| ADA4522-1ARMZ | Zero-drift architecture, 2.5 μV max offset, 5.8 nV/√Hz noise, but 1.2 mA supply current and 8-pin MSOP package. | Superior DC accuracy for long-term sensor drift compensation; larger footprint and no AEC-Q100 qualification. | Select ADA4522-1ARMZ when offset drift over time/temperature is critical and board space permits MSOP. |
Compared with OPA376AIDBVR and ADA4522-1ARMZ, the LMP7715MFX offers the optimal balance of ultra-low input bias current (100 fA), 17 MHz bandwidth, and SOT-23-5 footprint - making it uniquely suited for high-impedance, wideband, battery-operated sensor interfaces where both noise and current consumption matter.
Availability
LMP7715MFX is available at Aetrix Electronics and suitable for medical diagnostics equipment, portable environmental monitors, and industrial temperature sensing systems requiring stable component supply, long-lifecycle support, and guaranteed traceable sourcing.
Supply support for LMP7715MFX 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 amplifiers and signal-chain solutions.
The LMP7715MFX belongs to TI's LMP™ precision amplifier family, designed specifically for high-accuracy, low-power sensor interface and instrumentation applications demanding low noise, low offset, and rail-to-rail performance.
FAQ
What is the maximum capacitive load the LMP7715MFX can drive without oscillation?
The LMP7715MFX can directly drive capacitive loads up to 120 pF while maintaining stability in unity-gain configuration. Beyond that, an isolation resistor (RISO) must be placed in series with the output to restore phase margin. This requirement is explicitly documented in the TI datasheet Section "Capacitive Load" and verified via phase margin testing across temperature and supply voltage.
Does the LMP7715MFX support true rail-to-rail input common-mode range?
No - the LMP7715MFX features rail-to-rail *output* swing but only extends its input common-mode range to 300 mV below ground (V−) and up to V+ − 1.2 V. This is confirmed in the Electrical Characteristics table under "CMVR" (Common Mode Voltage Range) for 5 V operation: −0.3 V to 4 V. It is not a full rail-to-rail input amplifier.
Is the LMP7715MFX qualified for automotive applications?
No - only the LMP7716Q variant is AEC-Q100 Grade 1 qualified. The LMP7715MFX is rated for industrial temperature range (−40°C to +125°C) and is not manufactured on the automotive-grade flow or subjected to AEC-Q100 stress testing. Its use in automotive systems requires customer-level qualification.
What is the typical supply current of the LMP7715MFX at 1.8 V supply?
At 1.8 V supply and 25°C, the typical supply current of the LMP7715MFX is 1.15 mA, as specified in the "Electrical Characteristics" table under "Supply Current (LMP7715)" with test condition VS = 1.8 V. This value remains stable across the full operating temperature range per Figure 17 in the datasheet.
Can the LMP7715MFX be used in transimpedance amplifier configurations?
Yes - the LMP7715MFX is explicitly recommended for transimpedance amplifier (TIA) applications due to its 100 fA input bias current, 5.8 nV/√Hz input voltage noise, and 17 MHz gain bandwidth. The datasheet includes dedicated TIA design guidance (Section "Transimpedance Amplifier") and stability analysis for photodiode interfaces with parasitic capacitance.
LMP7715MFX Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- LMP®, PowerWise®
- Package/Case:
- SC-74A, SOT-753
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 1
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 11.5V/µs
- Gain Bandwidth Product:
- 17 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 0.1 pA
- Voltage - Input Offset:
- 10 µV
- Current - Supply:
- 1.15mA
- Current - Output / Channel:
- 66 mA
- Voltage - Supply Span (Min):
- 1.8 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
LMP7715MFX FAQ
1.How can I place an order for LMP7715MFX through Aetrix?
Please submit a Request for Quotation (RFQ) for LMP7715MFX 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 LMP7715MFX reliable?
The price and inventory of LMP7715MFX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LMP7715MFX is usually 5 days.
3.What payment methods are accepted for LMP7715MFX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LMP7715MFX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LMP7715MFX?
LMP7715MFX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LMP7715MFX 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 LMP7715MFX?
For technical support, including LMP7715MFX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LMP7715MFX requirements.
6.How does Aetrix verify that LMP7715MFX is sourced from the original manufacturer or authorized distributors?
All LMP7715MFX 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 LMP7715MFX meets industry standards.
7.What is the process for return or replacement of LMP7715MFX?
All LMP7715MFX units undergo pre-shipment inspection (PSI). If there is an issue with LMP7715MFX, 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 LMP7715MFX part is unused and in its original packaging.
Return procedure for LMP7715MFX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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