SMA540B
Active Biased RF
Transistor
PRELIMINARY DATA
• HIGH GAIN LOW NOISE AMPLIFIERS Gms = 19 dB at 1.
8 GHz • CURRENT EASY ADJUSTABLE BY AN EXTERNAL RESISTOR • OPEN COLLECTOR OUTPUT • TYPICAL SUPPLY VOLTAGE: 1.
4-3.
3 V • TRANSITION FREQUENCY 42 GHz • ULTRA MINIATURE SOT323-4L PACKAGE (LEAD FREE) APPLICATIONS • WIDEBAND APPLICATIONS • CELLULAR AND CORDLESS TELEPHONES • HIGH FREQUENCY OSCILLATORS
Bias
Bias, 4 C, 3
SOT323-4L (SC70) ORDER CODE SMA540BTR BRANDING TBD
DESCRIPTION The SMA540B is a
NPN Transistor integrating a current mirror as biasing.
In this way the IC (collector current) can be controlled setting the current at Bias pin according to IC = 10 * IBIAS.
The IBIAS current is easy ...