3SK252 NEC, 3SK252 Datasheet - Page 5

• Manufacturer Part Number: 3SK252
• Description: RF AMPLIFIER FOR CATV TUNER N-CHANNEL Si DUAL GATE MOS FIELD-EFFECT TRANSISTOR 4 PINS MINI MOLD
• Manufacturer: NEC

G
NF TEST CIRCUIT AT f = 55 MHz
PS
AND NF TEST CIRCUIT AT f = 470 MHz
INPUT
50
50
INPUT
40 pF
1 000 pF
1 000 pF
V
1 500 pF
22 k
G1S
22 k
3.3
k
1 000 pF
L
1
V
G2S
1 000 pF
27 pF
15 pF
Ferrite Beads
V
G2S
1 000 pF
47 k
2.2 k
V
G1S
15 pF
1 000 pF
47 k
V
DS
L
2
RFC
V
Ferrite Beads
DS
1 000 pF
1 000 pF
L
40 pF
3
1 500 pF
27 pF
OUTPUT
50
3.3 k
L
L
L
1
2
3
: 1.2 mm U.E.W
: 1.2 mm U.E.W
: REC 2.2 H
50
OUTPUT
5 mm 1T
5 mm 1T
3SK252
5