LF347-N 宽带四路 JFET 输入运算放大器

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

LF347-N
Vn at 1kHz (Typ) (nV/rtHz) 20    
IIB (Max) (pA) 8000    
Slew Rate (Typ) (V/us) 13    
GBW (Typ) (MHz) 4    
Number of Channels 4    
Total Supply Voltage (V) (Min) (+5V=5, +/-5V=10) 8    
Total Supply Voltage (V) (Max) (+5V=5, +/-5V=10) 36    
VIO (25 deg C) (Max) (mV) 5    
Output Current (+/-) (Min) (A) 31    
Input OutputType Vcm to V+, Not R-R Out
LF347-N 特性
Internally trimmed offset voltage: 5 mV max
Low input bias current: 50 pA
Low input noise current: 0.01 pA/[Radical]Hz
Wide gain bandwidth: 4 MHz
High slew rate: 13 V/µs
Low supply current: 7.2 mA
High input impedance: 1012
Low total harmonic distortion: <=0.02%
Low 1/f noise corner: 50 Hz
Fast settling time to 0.01%: 2 µs
LF347-N 应用技术支持与电子电路设计开发资源下载
  1. LF347-N 数据资料 dataSheet 下载.PDF
  2. TI 德州仪器放大器产品选型与价格 . xls
  3. Application Note 263 Sine Wave Generation Techniques (snoa665b.PDF, 349 KB)
  4. Effect of Heavy Loads on Accuracy & Linearity of Op Amp Circuits (snoa471a.PDF, 4.53 MB)