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