TL081BCPE4 Texas Instruments Integrated Circuit (Dual-In-Line Packages) In Stock
Texas Instruments TL081BCPE4 is a JFET-input operational amplifier with 86 dB typical CMRR, 0.007 µA max bias current, and internal frequency compensation, suitable for precision analog signal conditioning in an 8-pin DIP package.
- Manufacturer
- Texas Instruments
- Package
- Dual-In-Line Packages
- Pin Count
- 8
- Lifecycle
- OBSOLETE
- Datasheet
- TL081BCPE4 Datasheet PDF
- Category
- Integrated Circuit
- Temp Range
- ?°C to 70.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- JFET input stage delivers ultra-low input bias current of 0.007 µA maximum, ideal for high-impedance sensor signal conditioning
- 86 dB typical common-mode rejection ratio (CMRR) ensures accurate differential amplification in noisy environments
- Internal frequency compensation simplifies circuit design by eliminating external compensation network requirements
- Voltage-feedback architecture with wide bandwidth suits active filters, integrators, and precision instrumentation amplifier stages
Applications
The TL081BCPE4 is widely used in precision analog instrumentation, active filter circuits, and sample-and-hold amplifiers where its JFET input stage provides the high input impedance needed to buffer high-source-impedance sensors such as photodiodes, piezoelectric transducers, and pH electrodes. Its low bias current of 0.007 µA makes it suitable for charge-sensitive circuits and integrators where leakage currents degrade measurement accuracy. Laboratory test equipment, audio signal processors, and industrial measurement systems benefit from its combination of low offset voltage and high CMRR.
Specifications
| YTEOL | 0 |
| Amplifier Type | OPERATIONAL AMPLIFIER |
| Architecture | VOLTAGE-FEEDBACK |
| Average Bias Current-Max (IIB) | 0.007 µA |
| Bias Current-Max (IIB) @25C | 0.0002 µA |
| Common-mode Reject Ratio-Min | 75dB |
| Common-mode Reject Ratio-Nom | 86dB |
| Frequency Compensation | YES |
| Input Offset Current-Max (IIO) | 0.002 µA |
| Input Offset Voltage-Max | 5000 µV |
| JESD-30 Code | R-PDIP-T8 |
| JESD-609 Code | e4 |
| Low-Bias | YES |
| Low-Offset | NO |
| Micropower | NO |
| Neg Supply Voltage Limit-Max | -18 V |
| Neg Supply Voltage-Nom (Vsup) | -15 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 | 8V/us |
| Slew Rate-Nom | 13V/us |
| Supply Current-Max | 2.8mA |
| Supply Voltage Limit-Max | 18V |
| Supply Voltage-Nom (Vsup) | 15V |
| Surface Mount | NO |
| Technology | BIPOLAR |
| Temperature Grade | COMMERCIAL |
| Terminal Finish | NICKEL PALLADIUM GOLD |
| Terminal Form | THROUGH-HOLE |
| Terminal Pitch | 2.54mm |
| Terminal Position | DUAL |
| Unity Gain BW-Nom | 3000 |
| Voltage Gain-Min | 25000 |
| 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 |
| Country of Origin | Mexico |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for TL081BCPE4:
Frequently Asked Questions
Why is the JFET input stage of the TL081BCPE4 important for interfacing with high-impedance sensors like photodiodes?
The JFET input stage of the TL081BCPE4 limits the input bias current to a maximum of 0.007 µA (7 nA), which is orders of magnitude lower than a bipolar-input op-amp. For a photodiode with an internal resistance of 100 MΩ, even 7 nA of bias current would produce only 0.7 V offset, acceptable for most precision measurement tasks without additional compensation circuitry.
How does the 86 dB common-mode rejection ratio of the TL081BCPE4 protect measurement accuracy in industrial noise environments?
A CMRR of 86 dB means that a common-mode noise signal of 1 V at 60 Hz — typical of power-line interference in industrial settings — is attenuated to approximately 5 µV at the output. This level of rejection keeps measurement errors well below the 5000 µV maximum input offset voltage of the device, ensuring that external electromagnetic interference does not corrupt differential sensor readings in motor control cabinets or factory automation panels.
For a hobbyist or lab prototype using the TL081BCPE4, what advantage does the 8-pin DIP package provide?
The 8-pin DIP package of the TL081BCPE4 with 2.54 mm through-hole pin spacing plugs directly into standard breadboards and IC sockets, making it accessible for manual prototyping without surface-mount soldering tools. Its 8-pin standard pinout is also identical to most single op-amp DIP packages, so the TL081BCPE4 can replace other op-amps in an existing socket with minimal circuit modification.
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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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