on November 5th 65

Exploring the TL084CN Operational Amplifier

The TL084CN is a versatile JFET input operational amplifier, celebrated for its high input impedance and low offset voltage, features that are invaluable for high-precision applications. As modern electronics increasingly demand enhanced accuracy and efficiency, the TL084CN’s unique qualities make it ideal for use across various amplifier applications, from audio engineering to industrial systems. This article digs into the specifications, applications, and technical advantages of the TL084CN, exploring why it is a preferred choice. We'll also discuss how the TL084CN ensures reliable signal integrity in sensitive devices, supporting innovation in audio processing, instrumentation, and more advanced electronic frameworks.

Catalog

Pin Configuration

CAD Model

Symbol

Footprint

3D Model

Overview of TL084CN

The TL084CN, as part of the TL08x operational amplifier family, incorporates a JFET input that elevates selection quality and enhances overall performance compared to earlier amplifier models. This integration of high-voltage JFET technology alongside bipolar transistors within a single integrated circuit achieves optimal matching for diverse applications. This sophisticated arrangement allows the amplifier to be employed in situations where precision and stability are deeply valued.

Implementing a JFET input stage in the TL084CN provides notable benefits, including increased input impedance and reduced input bias current relative to traditional BJT inputs. These attributes minimize signal distortion and bolster signal fidelity, aspects mostly cherished in audio applications and instrumentation design. Practically, this translates to maintaining the integrity of input signals even within complex circuits or amid substantial noise.

The amalgamation of JFET and bipolar transistors within the TL084CN results in exceptional performance and dependability. This design decision enhances slew rates and broadens bandwidths, rendering the amplifier adept for high-speed signal processing tasks. For example, you can fashion precision audio equipment that can harness these attributes to attain superior clarity and minimized latency in sound reproduction, which is useful for high-caliber professional sound systems.

Schematic Representation

Technical Specifications

Type	Parameter
Lifecycle Status	ACTIVE (Last Updated: 4 days ago)
Factory Lead Time	12 Weeks
Contact Plating	Gold
Mounting Type	Through Hole
Package / Case	14-DIP (0.300, 7.62mm)
Surface Mount	NO
Number of Pins	14
Operating Temperature	0°C ~ 70°C
Packaging	Tube
JESD-609 Code	e4
Part Status	Active
Moisture Sensitivity Level (MSL)	1 (Unlimited)
Number of Terminations	14
ECCN Code	EAR99
Max Power Dissipation	680mW
Terminal Position	DUAL
Number of Functions	4
Supply Voltage	15V
Base Part Number	TL084
Pin Count	14
Power Supplies	±15V
Number of Channels	4
Operating Supply Current	1.4mA
Nominal Supply Current	11.2mA
Slew Rate	13V/μs
Architecture	VOLTAGE-FEEDBACK
Amplifier Type	J-FET
Common Mode Rejection Ratio	70 dB
Current - Input Bias	30pA
Voltage - Supply, Single/Dual (±)	7V ~ 36V ±3.5V ~ 18V
Input Offset Voltage (Vos)	15mV
Neg Supply Voltage-Nom (Vsup)	-15V
Unity Gain BW-Nom	3000 kHz
Voltage Gain	106.02dB
Average Bias Current-Max (IIB)	0.01μA
Low-Offset	NO
Frequency Compensation	YES
Supply Voltage Limit-Max	18V
Voltage - Input Offset	3mV
Low-Bias	YES
Micropower	NO
Programmable Power	NO
Dual Supply Voltage	9V
Neg Supply Voltage-Max (Vsup)	-18V
Nominal Gain Bandwidth Product	3MHz
Max I/O Voltage	15mV
Input Offset Current-Max (IIO)	0.002μA
Height	5.08mm
Length	19.3mm
Width	6.35mm
Thickness	3.9mm
REACH SVHC	No SVHC
Radiation Hardening	No
RoHS Status	ROHS3 Compliant
Lead Free	Lead Free

Comparative Components

Part Number	Manufacturer	Package / Case	Number of Pins	Slew Rate	Input Offset Voltage	Common Mode Rejection Ratio	Supply Voltage	Operating Supply Current	Voltage Gain
TL084CN	Texas Instruments	14-DIP (0.300, 7.62mm)	14	13 V/µs	15 mV	70 dB	15 V	1.4 mA	106.02 dB
TL074CN	Texas Instruments	14-DIP (0.300, 7.62mm)	14	13 V/µs	10 mV	70 dB	15 V	1.4 mA	106.02 dB
TL074IN	Texas Instruments	14-DIP (0.300, 7.62mm)	14	13 V/µs	6 mV	70 dB	15 V	1.4 mA	106.02 dB
TL084CNE4	Texas Instruments	PDIP	14	13 V/µs	15 mV	70 dB	15 V	1.4 mA	106.02 dB

Features

Feature	Description
Low Power Consumption	Reduces overall energy usage in circuits
Wide Common-Mode and Differential Voltage Ranges	Supports a broad range of voltage inputs
Low Input Bias and Offset Currents	Minimizes input current variations and offset errors
Output Short-Circuit Protection	Protects the output from potential damage due to short circuits
Low Total Harmonic Distortion	0.003% typical, ideal for audio applications
High Input Impedance	JFET-input stage for enhanced impedance
Latch-Up-Free Operation	Ensures reliable and stable operation
High Slew Rate	13 V/µs typical for fast signal response
Common-Mode Input Voltage Range Includes VCC+	Allows input voltage to exceed positive supply voltage

TL084CN Substitutes

• TL074CN

Applications

The TL084CN operational amplifier distinguishes itself by encompassing four discrete op-amps within one package. Each op-amp benefits from the advanced integration of high-voltage JFET and bipolar transistor technology. This combination results in high input impedance and low bias current, which effectively reduces noise and minimizes harmonic distortion. These features make the TL084CN mostly suited for high-fidelity audio settings, especially as an active component in audio preamplifiers where precision and clarity must be maintained.

In the world of audio engineering, the inclusion of the TL084CN plays a foundational role. It acts as a substantial building block in the creation of audio preamplifiers. The op-amp's high input impedance facilitates a wide frequency response, ensuring delicate audio signals are amplified without sacrificing detail. In practice, you can gravitate towards the TL084CN for its role in achieving premium audio reproduction. Its design allows it to manage a broad spectrum of signal amplitudes without distortion, a testament to its JFET and bipolar technology.

A notable use of the TL084CN appears in precision audio equipment. Here, you can exploit its low bias current to preserve audio signal integrity, used for low-level inputs where other components could introduce noise. This level of precise signal management enables the retention of even subtle audio distinctions, which appeals to you who prioritize superior sound quality. Outside the world of audio, the TL084CN showcases adaptability across a range of electronic systems. Its attributes, such as high-speed response and low power consumption, make it a fitting choice for circuits demanding quick and precise signal processing. It's often found in diverse fields, including telecommunications and instrumentation, where the op-amp’s robust characteristics contribute to improved system reliability and performance.

Voltage Stability and Compatibility of the TL084CN

The TL084CN offers a unique array of four operational amplifiers (op-amps), featuring the same pin configuration as LM324. Unlike the usual 5V for many op-amp devices such as the LM324, this device specifically runs on a lower voltage limit of 7V. To harness the full potential of this quad op-amp device, ensure the supply voltage in single-supply mode meets or exceeds 7V.

The 7V requirement brings a particular stability that affects circuit design, suggesting the importance of accounting for variations in voltage supply. Variations can compromise performance, possibly causing circuit interruptions. A continuous and stable voltage enhances circuit resilience, a notable trait of TL084CN which supports the development of systems where higher voltage flexibility adds to reliability.

Drawing from the applications of LM324, TL084CN can effortlessly find its place in current circuit frameworks. Its shared characteristics enable you to look at established LM324 circuit designs and more smoothly transition these insights into new implementations. Pre-existing LM324 circuit schematics act as a guiding resource in adapting and integrating the TL084CN.

Application Circuit

Package

Manufacturer Information

Since its inception in 1958, Texas Instruments has consistently been at the forefront of semiconductor technology, capturing a unique place in the industry’s landscape. Employing over 30,000 talented individuals worldwide, the company's spirit of innovation is tangibly felt in its continual advancements in analog and embedded processing solutions.

Texas Instruments (TI) is woven into the fabric of technological evolution through its groundbreaking contributions. Recognized for the invention of the integrated circuit, TI has continuously prioritized research and development, establishing itself as a dynamic part of the electronics sector. The integrated circuit stands as a testament to TI's pioneering spirit, transforming the world of computing and serving as a catalyst for the digital revolution. The ripple effects of this innovation have been felt across numerous domains including telecommunications and automotive technology.