GENERAL DESCRIPTION

The MAT14 is a quad monolithic NPN transistor that offers excellent parametric matching for precision amplifier and nonlinear circuit applications. Performance characteristics of the MAT14 include high gain (300 minimum) over a wide range of collector current, low noise (3 nV/√Hz maximum at 100 Hz, IC = 1 mA), and excellent logarithmic conformance. The MAT14 also features a low offset voltage of 100 µV typical and tight current gain matching to within 4%. Each transistor of the MAT14 is individually tested to data sheet specifications. For matching parameters (offset voltage, input offset current, and gain match), each of the dual transistor combinations are verified to meet stated limits. Device performance is guaranteed at an ambient temperature of 25°C and over the industrial temperature range.

FEATURES

  Low offset voltage: 400 µV maximum

  High current gain: 300 minimum

  Excellent current gain match: 4% maximum

  Low voltage noise density at 100 Hz, 1 mA

     3 nV/√Hz maximum

  Excellent log conformance

     Bulk resistance (rBE) = 0.6 Ω maximum

  Guaranteed matching for all transistors

APPLICATIONS

  Low noise op amp front end

  Current mirror and current sink/source

  Low noise instrumentation amplifiers

  Voltage controlled attenuators

  Log amplifiers