SLPU010 September   2022 JFE2140

 

  1.   Abstract
  2.   Trademarks
  3. 1Overview
    1. 1.1 JFE2140 Overview
    2. 1.2 JFE2140EVM Overview
      1. 1.2.1 Kit Contents
    3. 1.3 Related Documentation
    4. 1.4 Evaluation Module Limitations
    5. 1.5 Electrostatic Discharge Caution
  4. 2Getting Started
    1. 2.1 Power Supplies
    2. 2.2 Input
    3. 2.3 Output
    4. 2.4 Capacitors
  5. 3Application Circuit
    1. 3.1 Ultra-Low-Noise Preamplifier
  6. 4Schematic, PCB Layout, and Bill of Materials
    1. 4.1 Schematic
    2. 4.2 PCB Layout
    3. 4.3 Bill of Materials

1.1 JFE2140 Overview

The JFE2140 is a Burr-Brown™ matched-pair, discrete JFET built using Texas Instruments' modern, high performance, analog bipolar process. The JFE2140 features performance not previously available in older discrete JFET technologies. The JFE2140 offers excellent noise performance across all current ranges, where the quiescent current is adjustable from 50 μA to 20 mA. When biased at 5 mA, the device yields 0.9 nV/√Hz of input-referred noise.