LF353N Dual JFET Op-Amp: Specifications, Pin Configuration, and Alternatives

Oct17

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LF353N is a high-bandwidth dual JFET operational amplifier. This article delves into its compelling specifications, examining its datasheet, pinout, applications, equivalents, and other pertinent details that emphasize its versatility in various electronic circuits.

Catalog

1. LF353N Overview

2. Pin Configuration

3. LF353N CAD Model

4. Technical Specifications

5. Schematic Overview

6. LF353N Features

7. Practical Applications

8. Example Circuit Design

9. Alternative Components

10. LF353N vs. LF353P

11. Packaging Information

12. LF353N Manufacturer

13. Similar Components

1-LF353N Dual JFET Op-Amp Specifications, Pin Configuration, and Alternatives

LF353N Overview

The LF353N presents itself as a top-tier dual operational amplifier, meticulously designed with precisely matched JFETs and bipolar transistors within a unified monolithic circuit. It is typified by remarkable slew rates, minimal input bias and offset currents, along with a negligible offset voltage temperature coefficient, making it exceptionally well-suited for scenarios demanding both precision and swiftness.

LF353N Equivalents

Alternatives to the LF353N include:

-TL074

-LM1558

-MCP6002

Pin Configuration

2-LF353N Pin Configuration

Pin Number	Pin Name	Description
1	OUTPUT-A	The output of Op-Amp 1
2	INPUT-A (-)	Inverting Input of Op-Amp 1
3	INPUT-A (+)	Non-Inverting Input of Op-Amp 1
4	VEE, GND	Ground or Negative Supply Voltage
5	INPUT-B (+)	Non-Inverting Input of Op-Amp 2
6	INPUT-B (-)	Inverting Input of Op-Amp 2
7	OUTPUT-B	The output of Op-Amp 2
8	VCC	Positive Supply Voltage

LF353N CAD Model

3- LF353N CAD Model

Technical Specifications

The specifications highlight the technical parameters and performance ratings of the LF353N, closely aligning it with similar parts from ON Semiconductor. Diving deeper, the specifics of these performance ratings reveal crucial nuances.

Type	Parameter
Factory Lead Time	6 Weeks
Mount	Through Hole
Mounting Type	Through Hole
Package / Case	8-DIP (0.300, 7.62mm)
Number of Pins	8
Weight	851mg
Operating Temperature	0°C ~ 70°C
Packaging	Tube
JESD-609 Code	e3
Pbfree Code	No
Part Status	Last Time Buy
Moisture Sensitivity Level (MSL)	1 (Unlimited)
Number of Terminations	8
ECCN Code	EAR99
Terminal Finish	Tin (Sn)
Terminal Position	DUAL
Number of Functions	2
Supply Voltage	15V
Base Part Number	LF353
Pin Count	8
Operating Supply Voltage	36V
Number of Channels	2
Max Supply Voltage	18V
Operating Supply Current	3.6mA
Nominal Supply Current	6.5mA
Power Dissipation	500mW
Max Supply Current	6.5mA
Slew Rate	13V/μs
Architecture	VOLTAGE-FEEDBACK
Amplifier Type	J-FET
Common Mode Rejection Ratio	70 dB
Current - Input Bias	50pA
Input Offset Voltage (Vos)	10mV
Bandwidth	4MHz
Neg Supply Voltage-Nom (Vsup)	-15V
Unity Gain BW-Nom	4000 kHz
Voltage Gain	100dB
Power Supply Rejection Ratio (PSRR)	70dB
Low-Offset	NO
Frequency Compensation	YES
Voltage - Input Offset	5mV
Max Dual Supply Voltage	18V
Low-Bias	YES
Min Dual Supply Voltage	5V
Dual Supply Voltage	9V
Input Offset Current-Max (IIO)	0.004μA
Height	3.3mm
Length	9.27mm
Width	6.35mm
REACH SVHC	No SVHC
Radiation Hardening	No
RoHS Status	ROHS3 Compliant
Lead Free	Lead Free

Schematic Overview

4-Schematic Overview LF353N

LF353N Features

The LF353N stands out due to a multitude of noteworthy features that render it an adaptable and dependable element in varied applications. Each attribute not only elevates its performance but also widens its utility across different electronic systems.

• Low Power Consumption: A significant aspect of the LF353N is its low power consumption. This holds particular significance in battery-operated and portable devices, where conserving energy is essential. By utilizing minimal power, the LF353N prolongs the operational lifespan of these devices, reducing the necessity for frequent charging or battery replacement. In everyday use, this is advantageous in personal electronics, where extended battery life is a strong selling point.

• Wide Common-Mode Voltage Range: Featuring a wide common-mode voltage range, the LF353N can efficiently handle a variety of input voltages. This flexibility proves invaluable in systems subject to fluctuating power supply conditions.

• Low Input Bias and Offset Current: The LF353N is characterized by its low input bias and offset current, which minimizes input errors and ensures greater accuracy. This aspect is vital in precision instruments where even the smallest inaccuracies can result in substantial errors. In laboratory environments and industrial measurement devices, this reliability is essential for obtaining accurate readings.

• Comprehensive Output Short-Circuit Protection: Incorporating comprehensive output short-circuit protection, the LF353N shields the amplifier and connected circuits from potential damage caused by accidental short circuits. This feature significantly enhances the longevity and durability of electronic devices. Applications such as automotive electronics greatly benefit from this protection, minimizing the risk of costly repairs and downtime.

• High Input Impedance: The high input impedance, courtesy of the JFET input stage, minimizes the load on the previous circuit stage. This is particularly valuable in high-fidelity audio and sensor applications, where maintaining signal integrity is critical.

• Internal Frequency Compensation: Another crucial feature is internal frequency compensation, which simplifies the design process by eliminating the need for external compensation components. This reduces component count, saves board space, and mitigates design complexity and potential errors. This streamlined approach is frequently employed in consumer electronics to achieve compact and efficient designs.

• Latch-Free Operation: The latch-free operation of the LF353N ensures smooth and consistent performance without the risk of latch-up. This reliability is critical in real-time processing applications where uninterrupted operation is a necessity. Control systems and digital signal processing leverage this quality to maintain continuous functionality.

• High Slew Rate: Possessing a high slew rate of approximately 16 V/µs, the LF353N reacts swiftly to rapid changes in input signals. This feature is especially important in applications such as analog-to-digital conversion, video processing, and fast signal amplification where quick response times are imperative.

Practical Applications

The LF353N operational amplifier shines in scenarios that demand top-tier performance. Consider its applications in low-noise audio circuits, high-input impedance designs, sample-and-hold circuits, and high-speed integrators. Its blend of adaptability and dependability has made it a frontrunner in these areas.

Low-Noise Audio Circuits

In the dynamic world of audio engineering, maintaining superior sound quality often revolves around reducing noise interference. The LF353N, with its minimal total harmonic distortion and noise (THD+N), proves to be an exceptional tool for this purpose.

High-Input Impedance Designs

High-input impedance is essential in various settings to prevent significant loading on the preceding stage. The LF353N, boasting input impedance in the order of megaohms, fits seamlessly into scenarios needing this feature. For example, in biomedical instrumentation, accurate measurement of bio-signals is crucial. The LF353N’s high input impedance ensures these signals are captured without notable loss at the input stage, fulfilling this critical need.

Sample-and-Hold Circuits

Sample-and-hold circuits play a vital role in analog-to-digital conversion processes. The LF353N excels in this domain, capable of maintaining a stable output voltage from a rapidly changing input signal. This accuracy is especially beneficial in digital oscilloscopes and data acquisition systems, where precision and stability are prized attributes.

High-Speed Integrators

For applications necessitating the quick integration of input signals, the LF353N’s high slew rate and wide bandwidth come into play. High-speed integrators are significant in control systems and signal processing applications, where rapid response is non-negotiable.

Example Circuit Design

5-Example Circuit Design LF353N

Alternative Components

Choosing the right alternative to the LF353N hinges on a deep understanding of specific application requirements and the unique characteristics each substitute brings to the table.

Manufacturers	Category	Description
Fairchild	Operational Amplifiers (General Purpose)	FAIRCHILD SEMICONDUCTOR LF353N Operational Amplifier, Dual, 2 Amplifier, 4MHz, 13V/µs, ±18V, DIP, 8 Pins
TI	Operational Amplifiers (General Purpose)	Operational Amplifier, Dual, 2 Amplifier, 4MHz, 13V/µs, ±15V, DIP, 8 Pins
ADI	Operational Amplifiers (General Purpose)	ANALOG Devices AD712KNZ Operational Amplifier, Dual, 2 Amplifier, 4MHz, 20V/µs, ±4.5V to ±18V, DIP, 8 Pins
TI	Operational Amplifiers (General Purpose)	TEXAS INSTRUMENTS LF412CN/NOPB Operational Amplifier, Dual, 2 Amplifier, 4MHz, 15V/µs, 10V to 36V, DIP, 8 Pins

LF353N vs. LF353P

Operational amplifiers, commonly known as op-amps, serve as integral elements in analog electronics, each exhibiting unique properties and specific applications. Among these, the LF353N and LF353P are dual operational amplifiers that cater to distinct needs and applications.

LF353N Characteristics

The LF353N is distinguished by its internally compensated input offset voltage, a feature that ensures stable operation by minimizing deviations in input voltage. This characteristic proves beneficial in scenarios demanding precision and unwavering performance over extended periods. Moreover, the meticulous internal compensation mechanism of the LF353N helps reduce drift, promoting consistent functionality across various environmental conditions.

LF353P Features

In contrast, the LF353P is renowned for its high-speed JFET input, which offers very low offset voltage. This feature ensures high precision in analog signal processing, essential for applications requiring swift response and impeccable signal amplification. The combination of minimal supply current usage, an impressive gain-bandwidth product, and a rapid slew rate renders the LF353P ideal for high-frequency applications. These attributes are often harnessed in audio signal processing, radio frequency circuits, and instrumentation where immediate response to signal variations is critical.

Packaging Information

6- LF353N Packaging Information

LF353N Manufacturer

ON Semiconductor, headquartered in Phoenix, Arizona, holds a notable position in the semiconductor industry, offering an expansive portfolio tailored to a myriad of applications such as automotive, communication, computing, consumer, and industrial sectors. Despite experiencing a recent dip in rankings, ON Semiconductor persists in establishing its authority through a formidable global presence in manufacturing, sales, and design. ON Semiconductor's unwavering dedication to innovation and technological progress is demonstrated through significant investments in research and development. This profound commitment has empowered the company to deliver pioneering solutions attuned to the shifting needs of various markets.

Similar Components

Feature	LF353N	LM2904N	LF412CN	KA4558	KF353
Manufacturer	ON Semiconductor	ON Semiconductor	Texas Instruments	ON Semiconductor	ON Semiconductor
Package / Case	8-DIP (0.300, 7.62 mm)	8-DIP (0.300, 7.62 mm)	8-DIP (0.300, 7.62 mm)	8-DIP (0.300, 7.62 mm)	8-DIP (0.300, 7.62 mm)
Number of Pins	8	8	8	8	8
Slew Rate	13 V/µs	1.2 V/µs	0.3 V/µs	15 V/µs	13 V/µs
Input Offset Voltage	10 mV	6 mV	7 mV	3 mV	10 mV
Power Supply Rejection	70 dB	76 dB	50 dB	70 dB	70 dB
Common Mode Rejection	70 dB	70 dB	50 dB	70 dB	70 dB
Min Dual Supply Voltage	5 V	-	-	-	-
Supply Voltage	15 V	15 V	5 V	15 V	-
Max Dual Supply Voltage	18 V	22 V	-	-	18V
Max Supply Voltage	18 V	-	-	-	-

Datasheet PDF

Frequently Asked Questions [FAQ]

1. What are the primary uses of the LF353N?

The LF353N operational amplifier is employed in a variety of applications, including high-speed integrators, digital-to-analog converters, and sample-and-hold circuits. It performs reliably within a temperature range of 0°C to 70°C, ensuring consistent operation under typical conditions. These applications leverage the LF353N's dependability and versatility, making it a preferred component for both consumer and industrial electronic systems.

2. What are the key differences between the LF353N and the LF353P?

The main distinction between the LF353N and LF353P lies in their input offset voltage compensation. The LF353N features internally compensated input offset voltage, enhancing its stability for general-purpose applications. Meanwhile, the LF353P utilizes a high-speed JFET input, resulting in lower input offset voltage, a higher gain-bandwidth product, faster slew rate, and reduced supply current. These characteristics make the LF353P ideal for high-speed data processing and low-power scenarios, providing an edge in applications requiring quick response and efficiency.

3. How does the LF353N differ from the LF356?

While both the LF353N and LF356 are CMOS input operational amplifiers, they exhibit key differences in performance. The LF356 offers slightly higher bandwidth, a lower slew rate, and reduced offset current, making it suitable for single op-amp configurations in general-purpose applications. In contrast, the LF353N, with its dual op-amp design, is better suited for dual-channel applications. These differences can guide you in selecting the appropriate amplifier based on whether the application demands single or dual-channel functionality.