TL031CPG4 Texas Instruments Integrated Circuit (Dual-In-Line Packages) In Stock
TL031CPG4 is a JFET-input operational amplifier from Texas Instruments with 1.1 MHz gain-bandwidth product, offering low input bias current and single-supply compatibility in an 8-pin DIP package for general-purpose analog circuits.
- Manufacturer
- Texas Instruments
- Package
- Dual-In-Line Packages
- Pin Count
- 8
- Lifecycle
- ACTIVE
- Datasheet
- TL031CPG4 Datasheet PDF
- Category
- Integrated Circuit
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of TL031CPG4?
- JFET input stage provides extremely low input bias current in the picoampere range, ideal for high-impedance sensor interfaces and sample-and-hold circuits
- 1.1 MHz gain-bandwidth product with internal frequency compensation enabling stable single-stage amplifier designs without external compensation components
- 8-pin DIP through-hole package with commercial-grade temperature operation for straightforward breadboard prototyping and analog circuit development
What is TL031CPG4 used for?
TL031CPG4 is used in general-purpose analog signal conditioning circuits where a high-impedance JFET input is needed to amplify signals from sensors, photodetectors, or audio sources without loading the source. Its 1.1 MHz bandwidth suits audio-frequency filtering, instrumentation amplifier stages, and integrator circuits in educational and industrial analog design. The 8-pin DIP package simplifies through-hole assembly and breadboard prototyping for analog electronics development.
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
Where can I find the TL031CPG4 datasheet?
TL031CPG4 Datasheet DownloadOfficial datasheet from Texas Instruments
What are equivalent replacements for TL031CPG4?
Compatible alternatives and drop-in replacements for TL031CPG4:
Frequently Asked Questions
What input architecture does TL031CPG4 use, and how does it affect bias current in high-impedance source circuits?
TL031CPG4 uses a JFET input stage, which provides input bias currents in the picoampere range — typically orders of magnitude lower than bipolar-input op-amps. This ultra-low bias current prevents measurement errors when the amplifier is driven by high-impedance sources such as piezoelectric sensors, pH electrodes, or light-sensitive photodiodes.
What bandwidth does TL031CPG4 offer, and which signal-processing tasks suit its 1.1 MHz specification?
TL031CPG4 has a gain-bandwidth product of 1.1 MHz. This is adequate for audio-frequency amplification up to 20 kHz with a closed-loop gain of 50, active low-pass filter stages, integrators for waveform generation, and general instrumentation amplifier applications where signal content is concentrated below 100 kHz.
How does TL031CPG4 perform as a drop-in replacement for TL071 or TL081 in existing designs?
TL031CPG4 is functionally compatible with TL071 and TL081 JFET-input op-amps sharing the same 8-pin DIP footprint and similar bandwidth of approximately 1 MHz to 3 MHz. It can replace these parts in most single op-amp circuits without schematic changes, though designers should verify supply voltage limits and offset voltage specifications to confirm performance equivalence.
For a sample-and-hold circuit in a data-acquisition system, why is TL031CPG4 a strong candidate?
In a sample-and-hold circuit, the holding capacitor discharges slowly through the op-amp's input bias current between acquisition cycles. TL031CPG4's picoampere-range JFET input bias current minimizes this droop, maintaining the held voltage stable for milliseconds compared to bipolar-input amplifiers that may discharge the capacitor in microseconds, improving accuracy in 12-bit or higher data-acquisition systems.
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About Texas Instruments
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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