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Parameters

Number of channels (#) 4 Total supply voltage (Max) (+5V=5, +/-5V=10) 36 Total supply voltage (Min) (+5V=5, +/-5V=10) 8 Rail-to-rail In to V+ GBW (Typ) (MHz) 4 Slew rate (Typ) (V/us) 13 Vos (offset voltage @ 25 C) (Max) (mV) 5 Iq per channel (Typ) (mA) 1.8 Vn at 1 kHz (Typ) (nV/rtHz) 20 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 open-in-new Find other General-purpose op amps

Package | Pins | Size

PDIP (NFF) 14 52 mm² 6.35 x 8.26 SOIC (D) 14 52 mm² 8.65 x 6 open-in-new Find other General-purpose op amps

Features

  • Internally Trimmed Offset Voltage: 5 mV max
  • Low Input Bias Current: 50 pA
  • Low Input Noise Current: 0.01 pA/√Hz
  • Wide Gain Bandwidth: 4 MHz
  • High Slew Rate: 13 V/μs
  • Low Supply Current: 7.2 mA
  • High Input Impedance: 1012Ω
  • Low Total Harmonic Distortion: ≤0.02%
  • Low 1/f Noise Corner: 50 Hz
  • Fast Settling Time to 0.01%: 2 μs

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Description

The LF147 is a low cost, high speed quad JFET input operational amplifier with an internally trimmed input offset voltage (BI-FET II technology). The device requires a low supply current and yet maintains a large gain bandwidth product and a fast slew rate. In addition, well matched high voltage JFET input devices provide very low input bias and offset currents. The LF147 is pin compatible with the standard LM148. This feature allows designers to immediately upgrade the overall performance of existing LF148 and LM124 designs.

The LF147 may be used in applications such as high speed integrators, fast D/A converters, sample-and-hold circuits and many other circuits requiring low input offset voltage, low input bias current, high input impedance, high slew rate and wide bandwidth. The device has low noise and offset voltage drift.

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Technical documentation

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Type Title Date
* Data sheet LF147/LF347 Wide Bandwidth Quad JFET Input Operational Amplifiers datasheet (Rev. D) Mar. 25, 2013
Technical article What is an op amp? Jan. 21, 2020
Technical article How to lay out a PCB for high-performance, low-side current-sensing designs Feb. 06, 2018
Technical article Low-side current sensing for high-performance cost-sensitive applications Jan. 22, 2018
Technical article Voltage and current sensing in HEV/EV applications Nov. 22, 2017
E-book The Signal e-book: A compendium of blog posts on op amp design topics Mar. 28, 2017
Application note AN-256 Circuitry for Inexpensive Relative Humidity Measurement (Rev. B) May 06, 2013
Application note AN-262 Applying Dual and Quad FET Op Amps (Rev. B) May 06, 2013
Application note AN-301 Signal Conditioning for Sophisticated Transducers (Rev. B) May 06, 2013
Application note AN-263 Sine Wave Generation Techniques (Rev. C) Apr. 22, 2013
Application note AN-447 Protection Schemes for BI-FET Amplifiers and Switches May 02, 2004
Application note Get More Power Out of Dual or Quad Op-Amps Oct. 02, 2002

Design & development

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Design tools & simulation

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PSpice® for TI design and simulation tool
PSPICE-FOR-TI — 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 (...)
Features
  • Leverages Cadence PSpice Technology
  • Preinstalled library with a suite of digital models to enable worst-case timing analysis
  • Dynamic updates ensure you have access to most current device models
  • Optimized for simulation speed without loss of accuracy
  • Supports simultaneous analysis of multiple products
  • (...)
SIMULATION TOOL Download
SPICE-based analog simulation program
TINA-TI 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 (...)
document-generic User guide
CALCULATION TOOL Download
Analog engineer's calculator
ANALOG-ENGINEER-CALC — 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 (...)
Features
  • Expedites circuit design with analog-to-digital converters (ADCs) and digital-to-analog converters (DACs)
    • Noise calculations
    • Common unit translation
  • Solves common amplifier circuit design problems
    • Gain selections using standard resistors
    • Filter configurations
    • Total noise for common amplifier configurations
  • (...)

CAD/CAE symbols

Package Pins Download
PDIP (NFF) 14 View options
SOIC (D) 14 View options

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