E2Q0018-38-71
¡ electronic components
This version: Jul. 1998
Previous version: Jan. 1998
KGF1521
¡
electronic components
KGF1521
Small-Signal Amplifier
GENERAL DESCRIPTION
The KGF1521 is a high-performance GaAs FET small-signal amplifier for L-band frequencies that
features low voltage operation, low current operation, low noise, and low distortion. The
KGF1521 specifications are guaranteed to a fixed matching circuit for 3 V and 1.9 GHz; external
impedance-matching circuits are also required. Because of its high 3rd-order intercept point,
even at its low operating current, the KGF1521 is ideal as a small-signal amplifier for L-band
personal handy phones, such as digital keying cordless phones that require low intermodulation
properties.
FEATURES
• Low voltage and low current operation: 3 V, 2.5 mA (max.)
• Specifications guaranteed to a fixed matching circuit for 3 V, 1.9 GHz
• Low noise figure: 1.8 dB (typ.) at 1.9 GHz
• High linear gain: 12.5 dB (typ.) at 1.9 GHz
• High output power: 1 dB compression point = 0 dBm (typ.) at 1.9 GHz
• Low distortion: 3rd-order intercept point = 12 dBm (typ.) at 1.9 GHz
• Self-bias circuit configuration with built-in source capacitor
• Package: 4PSOP
PACKAGE DIMENSIONS
1.8±0.1
0.85±0.05
0.6
+0.1
–0.05
0.4
+0.1
–0.05
1.1±0.15
0.36 0.74
3.0±0.2
1.5±0.15
0.3 MIN
0 to 0.15
Package material
1.9±0.1
2.8±0.15
Lead frame material
0.125
+0.03
–0
Epoxy resin
42 alloy
Solder plating
5
mm
or more
Pin treatment
Solder plate thickness
(Unit: mm)
1/8
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