TL084 Pinout, Equivalent, Application, Datasheet

The TL084 is a general-purpose J-FET quad operational amplifier IC widely used in audio processing, active filters, instrumentation, and signal-conditioning circuits. In this detailed guide, we cover everything about the TL084, including its TL084 pinout, internal design advantages, key features, datasheet specifications, working principle, applications, compatible equivalents, and FAQs. Its high-input-impedance J-FET inputs and low noise performance make it an excellent choice for precision analog designs.

TL084 datasheet pinout equivalent specification application — TL084 Datasheet

Introduction

The TL084 is a high-performance quad operational amplifier featuring J-FET inputs, providing extremely high input impedance, fast slew rate, and low noise characteristics. Because of its four op-amp channels in a single IC, it is widely used in systems that require multiple precision amplifier stages such as audio equalizers, oscillators, signal buffers, and analog filters.

Its J-FET inputs ensure low input bias current, making the IC suitable for sensitive analog circuitry where accuracy and minimal loading are essential.

TL084 pinout datasheet equivalent specification pin configuration — TL084 IC Pins

Pin Configuration / Pinout of TL084 IC

TL084 pinout datasheet equivalent specification application — TL084 Pinout

Understanding the TL084 Pinout Configuration

Pin#	Pin Name
1	Output 1
2	Inverting Input 1
3	Non-Inverting Input 1
4	V+
5	Non-Inverting Input 2
6	Inverting Input 2
7	Output 2
8	Output 3
9	Inverting Input 3
10	Non-Inverting Input 3
11	V−
12	Non-Inverting Input 4
13	Inverting Input 4
14	Output 4

TL084 Pin Configuration Table

Note: DATASHEET DOWNLOAD button is provided end of this article.

TL084 Key Features

Quad J-FET input operational amplifiers
Very high input impedance for precision analog stages
Low noise performance suitable for audio circuits
Fast slew rate for rapid signal transitions
Low input bias and offset currents
Wide common-mode and differential input voltage range
Low power consumption
Internally compensated for stable operation
Ideal for professional and consumer audio applications

TL084 Specifications/Characteristics

IC type: General-purpose quad J-FET operational amplifier
Supply voltage: supports dual or single-supply operation
Input impedance: very high due to J-FET technology
Input bias current: extremely low
Slew rate: fast response suitable for high-frequency applications
Gain bandwidth: suitable for audio and general analog circuits
Low noise characteristics
Common-mode input voltage range: wide
Operating temperature range: varies by manufacturer
Package: 14-pin DIP, SOIC, TSSOP variants

Key Applications of TL084 IC

Audio preamplifiers and equalizers
High-impedance sensor signal conditioning
Active low-pass, high-pass, band-pass, and notch filters
Oscillators and waveform generators
Analog computing circuits
Voltage followers and buffers
Precision integrator and differentiator circuits
Mixer and multiplexer circuits
Instrumentation amplifiers

TL084 Equivalent ICs / Alternatives

(Verify pin compatibility before using substitutions)

TL084A / TL084B
TL074 (lower noise alternative)
TL064 (low power version)
LF347
LF347A
TL072 / TL082 (dual-op-amp equivalents)
JRC4558 (general-purpose dual alternative)
OPA4134 (higher-grade quad op-amp)

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Working Principle of TL084

The TL084 works as a quad voltage amplifier using high-impedance J-FET inputs that allow accurate signal amplification with minimal loading on the input signal source. Each internal op-amp amplifies the difference between its inverting and non-inverting terminals.

Its high slew rate ensures clean signal reproduction, especially beneficial in audio systems and high-speed analog circuits. The J-FET inputs reduce noise and improve linearity, while internal compensation maintains stability across various gain levels.

Frequently Asked Questions (FAQ)

Q1: What is the main advantage of TL084?
Its J-FET inputs provide high impedance and low noise, ideal for precision analog circuits.

Q2: Can TL084 be used for audio?
Yes, it is commonly used in audio filters, preamps, and equalizers.

Q3: Does TL084 support single-supply operation?
Yes, although dual-supply operation provides optimal performance.

Q4: How many op-amps does TL084 contain?
Four independent operational amplifier channels.

Q5: What is the difference between TL084 and TL074?
TL074 offers lower noise and improved performance, while TL084 is general-purpose.

Conclusion

The TL084 is a versatile and reliable quad J-FET operational amplifier suited for a broad range of analog applications such as audio processing, active filtering, instrumentation, and precision signal conditioning. Its excellent input characteristics, fast slew rate, and low noise performance make it a preferred choice in both hobbyist and professional electronic designs.

Datasheet of TL084 IC

Click the following Button below to download the datasheet of TL084 :

Download Datasheet

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