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

FEATURES
• Low Voltage Noise .................... @ 100 Hz, 1 nV/√Hz Max
• High Gain Bandwidth ................................... 190 MHz Typ
• Excellent Gain ............................... @ IC = 1 mA, 165 Typ
• TIght Gain Matching ............................................ 3% Max
• Outstanding Logarithmic Conformance .. rBE = 0.3 Ω Typ
• Low Offset Voltage ........................................ 200 μV Max
• Low Cost

APPLICATIONS
• Microphone Preamplifiers
• Tape-Head Preamplifiers
• Current Sources and Mirrors
• Low Noise Precision Instrumentation
• Voltage Controlled Amplifiers/Multipliers