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Matched NPN transistor pair
 AS394H-Matched NPN transistor pair 

 The AS394 is a junction matched monolithic NPN transistor pair with an order of magnitude improvement in matching over conventional transistor pair.
Electrical characteristics of these devices, such as drift versus initial offset voltage, noise and the exponential relationship of base-emitter voltage to collector current, closely approach those of a theoretical transistor and gives extremely low noise and operation over a wide current range. Most parameters are guaranteed over a current range of 1mkA to 1mA and 0V up to 20V collector-base voltage.
   
Datasheet

FEATURES

- Effectively "ideal" and identical transistors
- Emitter-base offset voltage temperature drift less than 1 mkV/oC
- Current gain (hFE) matched to 5%
- Parameters are guaranteed in the range of collector current of 10 mkA to 1 mA
- Noise Voltage Density of 1,8 nV/ Hz
- Ideal logarithmic properties

 
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