Product details

Number of channels (#) 4 Total supply voltage (Max) (+5V=5, +/-5V=10) 36 Total supply voltage (Min) (+5V=5, +/-5V=10) 7 Rail-to-rail In to V+ GBW (Typ) (MHz) 3 Slew rate (Typ) (V/us) 13 Vos (offset voltage @ 25 C) (Max) (mV) 10 Iq per channel (Typ) (mA) 2 Vn at 1 kHz (Typ) (nV/rtHz) 18 Rating Catalog Operating temperature range (C) 0 to 70 Offset drift (Typ) (uV/C) 10 Features Input bias current (Max) (pA) 200 CMRR (Typ) (dB) 100 Output current (Typ) (mA) 31 Architecture FET
Number of channels (#) 4 Total supply voltage (Max) (+5V=5, +/-5V=10) 36 Total supply voltage (Min) (+5V=5, +/-5V=10) 7 Rail-to-rail In to V+ GBW (Typ) (MHz) 3 Slew rate (Typ) (V/us) 13 Vos (offset voltage @ 25 C) (Max) (mV) 10 Iq per channel (Typ) (mA) 2 Vn at 1 kHz (Typ) (nV/rtHz) 18 Rating Catalog Operating temperature range (C) 0 to 70 Offset drift (Typ) (uV/C) 10 Features Input bias current (Max) (pA) 200 CMRR (Typ) (dB) 100 Output current (Typ) (mA) 31 Architecture FET
PDIP (N) 14 181 mm² 19.3 x 9.4 SOIC (D) 14 52 mm² 8.65 x 6
  • Low Input Bias Current: 50 pA Typical
  • Low Input Noise Current: 0.01 pA/√Hz Typical
  • Low Total Harmonic Distortion
  • Low Supply Current: 8 mA Typical
  • Gain Bandwidth: 3 MHz Typical
  • High Slew Rate: 13 V/ms Typical
  • Low Input Bias Current: 50 pA Typical
  • Low Input Noise Current: 0.01 pA/√Hz Typical
  • Low Total Harmonic Distortion
  • Low Supply Current: 8 mA Typical
  • Gain Bandwidth: 3 MHz Typical
  • High Slew Rate: 13 V/ms Typical

The LF347 and LF347B devices are low-cost, high-speed, JFET-input operational amplifiers. They require low supply current yet maintain a large gain-bandwidth product and a fast slew rate. In addition, their matched high-voltage JFET inputs provide very low input bias and offset current.

The LF347 and LF347B can be used in applications such as high-speed integrators, digital-to-analog converters, sample-and-hold circuits, and many other circuits.

The LF347 and LF347B devices are characterized for operation from 0°C to 70°C.

The LF347 and LF347B devices are low-cost, high-speed, JFET-input operational amplifiers. They require low supply current yet maintain a large gain-bandwidth product and a fast slew rate. In addition, their matched high-voltage JFET inputs provide very low input bias and offset current.

The LF347 and LF347B can be used in applications such as high-speed integrators, digital-to-analog converters, sample-and-hold circuits, and many other circuits.

The LF347 and LF347B devices are characterized for operation from 0°C to 70°C.

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Technical documentation

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Type Title Date
* Data sheet LF347, LF347B JFET-Input Quad Operational Amplifiers datasheet (Rev. C) 31 Mar 2016
Application note Understanding Operational Amplifier Specifications (Rev. B) 16 Aug 2021
Application note 연산 증폭기 사양에 대한 이해 (Rev. A) 23 Feb 2020
Technical article What is an op amp? 21 Jan 2020
Technical article How to lay out a PCB for high-performance, low-side current-sensing designs 06 Feb 2018
Technical article Low-side current sensing for high-performance cost-sensitive applications 22 Jan 2018
Technical article Voltage and current sensing in HEV/EV applications 22 Nov 2017
E-book The Signal e-book: A compendium of blog posts on op amp design topics 28 Mar 2017
Application note Handbook of Operational Amplifier Applications (Rev. B) 19 Sep 2016
Application note Get Fast Stable Response From Improved Unity-Gain Followers 02 Oct 2002
Application note Get More Power Out of Dual or Quad Op-Amps 02 Oct 2002

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Simulation model

LF347, LF347B PSpice Model

SLOJ038.ZIP (0 KB) - PSpice Model
Simulation tool

PSPICE-FOR-TI — PSpice® for TI design and simulation tool

PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
Simulation tool

TINA-TI — SPICE-based analog simulation program

TINA-TI provides all the conventional DC, transient and frequency domain analysis of SPICE and much more. TINA has extensive post-processing capability that allows you to format results the way you want them. Virtual instruments allow you to select input waveforms and probe circuit nodes voltages (...)
Calculation tool

ANALOG-ENGINEER-CALC — Analog engineer's calculator

The Analog Engineer’s Calculator is designed to speed up many of the repetitive calculations that analog circuit design engineers use on a regular basis. This PC-based tool provides a graphical interface with a list of various common calculations ranging from setting op-amp gain with feedback (...)
Design tool

CIRCUIT060013 — Inverting amplifier with T-network feedback circuit

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Design tool

CIRCUIT060015 — Adjustable reference voltage circuit

This circuit combines an inverting and non-inverting amplifier to make a reference voltage adjustable from the negative of the input voltage up to the input voltage. Gain can be added to increase the maximum negative reference level.
Design tool

CIRCUIT060074 — High-side current sensing with comparator circuit

This high-side, current sensing solution uses one comparator with a rail-to-rail input common mode range to create an over-current alert (OC-Alert) signal at the comparator output (COMP OUT) if the load current rises above 1 A. The OC-Alert signal in this implementation is active low. So when the (...)
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PDIP (N) 14 View options
SOIC (D) 14 View options

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