GENERAL DESCRIPTION
The SSM2220 is a dual, low noise, matched PNP transistor, which has been optimized for use in audio applications.
The ultralow input voltage noise of the SSM2220 is typically only 0.7 nV/√Hz over the entire audio bandwidth of 20 Hz to 20 kHz. The low noise, high bandwidth (190 MHz), and offset voltage of (200 μV maximum) make the SSM2220 an ideal choice for demanding, low noise preamplifier applications.

FEATURES
  Low voltage noise at 100 Hz, 1 nV/√Hz maximum
  High gain bandwidth: 190 MHz typical
  Gain at IC = 1 mA, 165 typical
  Tight gain matching: 3% maximum
  Outstanding logarithmic conformance: rBE = 0.3 Ω typical
  Low offset voltage: 200 μV maximum

APPLICATIONS
  Microphone preamplifiers
  Tape head preamplifiers
  Current sources and mirrors
  Low noise precision instrumentation
  Voltage controlled amplifiers/multipliers