TL031CPE4 Texas Instruments Integrated Circuit (Dual-In-Line Packages) In Stock
TL031CPE4 is an enhanced JFET-input low-power precision operational amplifier with 200 pA typical bias current and 87 dB common-mode rejection ratio. Its voltage-feedback architecture with internal compensation simplifies stable closed-loop design. Available in a through-hole DIP package for prototyping and instrumentation boards.
- Manufacturer
- Texas Instruments
- Package
- Dual-In-Line Packages
- Pin Count
- 8
- Lifecycle
- OBSOLETE
- Datasheet
- TL031CPE4 Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $0.2421(MOQ 1000)
- Temp Range
- ?°C to 70.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- JFET input stage with 200 pA typical bias current minimizes leakage errors in high-impedance sensor interfaces and sample-and-hold circuits
- 87 dB typical CMRR with internal frequency compensation reduces external component count in precision differential signal conditioning stages
- Low-power precision architecture suits battery-operated instrumentation where quiescent current budget is constrained to microamp-level per channel
Applications
TL031CPE4 is used in precision instrumentation amplifiers, photodiode transimpedance amplifiers, and integrators where ultra-low input bias current is essential for measurement accuracy. Its JFET input allows use with high-impedance sensors such as pH electrodes and piezoelectric transducers without introducing significant offset from source impedance mismatch. The through-hole DIP package makes it suitable for laboratory bench instruments, educational prototyping, and repair of legacy precision test equipment.
Specifications
| Pbfree Code | Yes |
| YTEOL | 0 |
| Amplifier Type | OPERATIONAL AMPLIFIER |
| Architecture | VOLTAGE-FEEDBACK |
| Average Bias Current-Max (IIB) | 0.0004 µA |
| Bias Current-Max (IIB) @25C | 0.0002 µA |
| Common-mode Reject Ratio-Min | 75dB |
| Common-mode Reject Ratio-Nom | 87dB |
| Frequency Compensation | YES |
| Input Offset Current-Max (IIO) | 0.0002 µA |
| Input Offset Voltage-Max | 4500 µV |
| JESD-30 Code | R-PDIP-T8 |
| JESD-609 Code | e4 |
| Low-Bias | YES |
| Low-Offset | NO |
| Micropower | YES |
| Neg Supply Voltage Limit-Max | -18 V |
| Neg Supply Voltage-Nom (Vsup) | -5 V |
| Number of Functions | 1 |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | DIP8,.3 |
| Package Shape | RECTANGULAR |
| Package Style | IN-LINE |
| Packing Method | TUBE |
| Power | NO |
| Programmable Power | NO |
| Qualification Status | Not Qualified |
| Slew Rate-Min | 1.5V/us |
| Slew Rate-Nom | 2.2V/us |
| Supply Current-Max | 0.28mA |
| Supply Voltage Limit-Max | 18V |
| Supply Voltage-Nom (Vsup) | 5V |
| Surface Mount | NO |
| Technology | BIFET |
| Temperature Grade | COMMERCIAL |
| Terminal Finish | NICKEL PALLADIUM GOLD |
| Terminal Form | THROUGH-HOLE |
| Terminal Pitch | 2.54mm |
| Terminal Position | DUAL |
| Unity Gain BW-Nom | 1000 |
| Voltage Gain-Min | 5000 |
| Wideband | NO |
| Package | Dual-In-Line Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| ECCN | EAR99 |
| HTS Code | 8542.33.00.01 |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
How does the JFET input stage of TL031CPE4 benefit high-impedance sensor measurements?
TL031CPE4's JFET input limits bias current to 200 pA typical and 400 pA maximum. When connected to a 100 MΩ pH electrode source, the resulting voltage error is only 40 µV maximum, compared to several millivolts that would arise from a bipolar BJT-input op-amp with microamp-level bias current, preserving measurement accuracy in electrochemical sensing.
What common-mode rejection does TL031CPE4 provide, and how does this help in differential measurement circuits?
TL031CPE4 achieves 87 dB typical CMRR, which means a 1 V common-mode signal at the inputs produces less than 45 µV of differential output error. In Wheatstone bridge amplifiers and differential thermocouple interfaces, this level of rejection suppresses power-supply-coupled noise and ground loop interference without additional filtering stages.
Is TL031CPE4 suitable as a transimpedance amplifier front-end for a photodiode detector?
Yes. TL031CPE4 is well matched to transimpedance amplifier designs with feedback resistors of 10 MΩ or higher because its 200 pA typical bias current contributes only 2 mV of DC offset at 10 MΩ. The internal frequency compensation keeps the amplifier stable with the large RC time constant formed by the feedback resistor and photodiode junction capacitance of 5 pF to 50 pF, making it suitable for optical receivers and low-light photometric instruments.
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| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1000+ | $0.3241 | $324.10 |
| 10000+ | $0.2890 | $2890.00 |
| 100000+ | $0.2421 | $24210.00 |
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