LM394 - National Semiconductor

LM394 LM194/LM394 Supermatch Pair

The LM194 and LM394 are junction isolated ultra wellmatched monolithic NPN transistor pairs with an order of magnitude improvement in matching over conventional transistor pairs This was accomplished by advanced linear processing and a unique new device structure Electrical characteristics of these devices such as drift versus initial offset voltage noise an.

Features

Y Y Y Y Y Y Y Y Emitter-base voltage matched to 50 mV Offset voltage drift less than 0 1 mV C Current gain (hFE) matched to 2% Common-mode rejection ratio greater than 120 dB Parameters guaranteed over 1 mA to 1 mA collector current Extremely low noise Superior logging characteristics compared to conventional pairs Plug-in replacement for presently available devices Typical Applications Low Cost Accurate Square Root Circuit IOUT e 10b5 010 VIN Low Cost Accurate Squaring Circuit IOUT e 10b6 (VIN)2 TL H 9241
  – 2 TL H 9241
  – 1 Trim for full scale accuracy C1995 National Semiconductor Corpo.