DESCRIPTION
The THAT300 Series ICs are large-geometry monolithic NPN and/or PNP transistor arrays which combine low noise, high speed and excellent parametric matching between devices of the same gender. The large geometries typically result in 25 Ω base spreading resistance for the PNP devices (30 Ω for the NPNs), producing 075 . nV√Hz voltage noise ( . 0 8 nV Hz for the NPNs). This makes the 300 Series an ideal choice for low-noise amplifier input stages.

FEATURES
 • 4 Matched NPN Transistors (300)
    4 Matched PNP Transistors (320)
    2 Matched NPNs and PNPs (340)
    4 Matched NP6N - 4 Matched PNP (380)
 • Monolithic Construction
 • Low Noise
    - 075 nV/√Hz PNP
    - 0 8 nV/√Hz NPN
 • High Speed
    - fT = 350 MHz (NPN)
    - fT = 325 MHz (PNP)
 • Excellent Matching – 500 V typical
    between devices of same gender
 • Dielectrically Isolated
 • 36V VCEO

APPLICATIONS
 • Microphone Preamplifiers
 • Current Sources
 • Current Mirrors
 • Log/Antilog Amplifiers
 • Multipliers
 • Servos