LMP7717MF Texas Instruments Integrated Circuit (Other) In Stock
The LMP7717 is a decompensated voltage-feedback operational amplifier from Texas Instruments with an ultralow input bias current of 10 fA typical and 83 dB minimum common-mode rejection ratio. It features a maximum input offset voltage of 480 µV and is housed in a 5-pin SOT-23 package, suitable for high-gain transimpedance amplifiers, photodiode signal conditioning, and precision sensing applications.
- Manufacturer
- Texas Instruments
- Package
- Other
- Pin Count
- 5
- Lifecycle
- OBSOLETE
- Datasheet
- LMP7717MF Datasheet PDF
- Category
- Integrated Circuit
- Temp Range
- -40.0°C to 125.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Ultralow input bias current: 10 fA typical (0.00001 µA)
- High CMRR: 83 dB minimum, 94 dB typical
- Low input offset voltage: 480 µV maximum
- Decompensated design for high closed-loop gains ≥ 10 V/V
- Voltage-feedback architecture with frequency compensation
- 5-pin SOT-23 package for compact precision analog circuits
Applications
The LMP7717 is designed for precision transimpedance amplifier (TIA) circuits in photodiode and optical sensor applications where sub-picoamp input bias current is essential to avoid signal offset errors. Its decompensated architecture enables stable high-gain configurations exceeding 10 V/V at extended bandwidths, making it suitable for medical diagnostics, optical spectrometers, and gas sensing instruments. The device is also used in high-impedance sensor interfaces, lock-in amplifiers, and scientific instrumentation where 94 dB typical CMRR and ultralow leakage current are critical performance requirements.
Specifications
| YTEOL | 0 |
| Amplifier Type | OPERATIONAL AMPLIFIER |
| Architecture | VOLTAGE-FEEDBACK |
| Average Bias Current-Max (IIB) | 0.0001 µA |
| Bias Current-Max (IIB) @25C | 0.00001 µA |
| Common-mode Reject Ratio-Min | 83dB |
| Common-mode Reject Ratio-Nom | 94dB |
| Frequency Compensation | YES |
| Input Offset Voltage-Max | 480 µV |
| JESD-30 Code | R-PDSO-G5 |
| JESD-609 Code | e0 |
| Low-Bias | YES |
| Low-Offset | YES |
| Micropower | NO |
| Number of Functions | 1 |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | TSOP5/6,.11,37 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE, LOW PROFILE, SHRINK PITCH |
| Packing Method | TR |
| Peak Reflow Temperature (Cel) | 260 |
| Power | NO |
| Programmable Power | NO |
| Qualification Status | Not Qualified |
| Slew Rate-Nom | 32V/us |
| Supply Current-Max | 1.75mA |
| Supply Voltage Limit-Max | 6V |
| Supply Voltage-Nom (Vsup) | 2.5V |
| Surface Mount | YES |
| Technology | CMOS |
| Temperature Grade | AUTOMOTIVE |
| Terminal Finish | TIN LEAD |
| Terminal Form | GULL WING |
| Terminal Pitch | 0.953mm |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | 40 |
| Unity Gain BW-Nom | 88000 |
| Wideband | YES |
| Package | Other |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 1 |
| ECCN | EAR99 |
| HTS Code | 8542.33.00.01 |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for LMP7717MF:
Amplifier, 1 Func, 480uV Offset-Max, CMOS, PDSO5
Frequently Asked Questions
How low is the LMP7717's input bias current, and why does this matter for photodiode amplifier designs?
The LMP7717 has a typical input bias current of just 10 fA (0.00001 µA) and a maximum of 100 fA at 25°C. In a transimpedance amplifier with a 1 GΩ feedback resistor, a 100 fA bias current produces only 100 µV of offset at the output — negligible for most precision sensing applications, making the LMP7717 ideal for weak-current photodiode detection in optical and medical instruments.
What does 'decompensated' mean for the LMP7717, and what minimum closed-loop gain is required for stable operation?
A decompensated op-amp like the LMP7717 is internally compensated for stability only at closed-loop gains above a minimum threshold — typically 10 V/V or more. Below this gain, the phase margin decreases and the amplifier may oscillate. This trade-off allows the LMP7717 to achieve a higher gain-bandwidth product than a unity-gain-stable alternative, making it suitable for high-gain precision amplifier stages in signal chains.
What common-mode rejection ratio does the LMP7717 provide, and how does this benefit differential sensor interfaces?
The LMP7717 achieves a minimum CMRR of 83 dB and a typical CMRR of 94 dB. In a differential sensor interface — such as a Wheatstone bridge pressure sensor — a 94 dB CMRR means that a 1 V common-mode noise on the input rails produces less than 20 µV of differential output error, preserving measurement accuracy in noisy industrial or automotive environments.
Can the LMP7717 be used in a high-impedance pH electrode amplifier, and what bias current constraint applies?
Yes, the LMP7717 is well-suited for pH electrode amplifiers, which present source impedances exceeding 100 MΩ. With a maximum input bias current of 100 fA, the voltage error across a 100 MΩ source impedance is only 10 µV — far below the 480 µV maximum offset voltage of the LMP7717 itself. This makes bias current a negligible error source in high-impedance electrochemical sensing circuits.
What package does the LMP7717MF come in, and how does this compare to the 8-pin SOIC alternative for precision op-amp applications?
The LMP7717MF is housed in a 5-pin SOT-23 package measuring approximately 2.9 mm x 1.6 mm, which is significantly smaller than an 8-pin SOIC package at 4.9 mm x 3.9 mm. The SOT-23 is preferred for compact precision analog front-end circuits in portable instruments and wearables, while the 8-pin SOIC may be chosen when additional bypass capacitor space or hand-soldering ease is more important than minimizing footprint.
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Texas Instruments (TI) is a global semiconductor company headquartered in Dallas, Texas. TI designs and manufactures analog and embedded processing chips used in industrial, automotive, consumer, communications, and enterprise systems.
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