UPC2745 NEC, UPC2745 Datasheet - Page 6

• Manufacturer Part Number: UPC2745
• Description: 3 V/ SUPER MINIMOLD SILICON MMIC WIDEBAND AMPLIFIER FOR MOBILE COMMUNICATIONS
• Manufacturer: NEC

TEST CIRCUIT
EXAMPLE OF APPLICATION CIRCUIT
Capacitors for V
pins.
supplied against V
capacitors give flat gain at least 10 MHz. In the case of under 10 MHz operation, increase the value of coupling
capacitor such as 2 200 pF. Because the coupling capacitors are determined by the equation of C = 1/(2
6
The application circuits and their parameters are for references only and are not intended for use in actual design-
in's.
1 000 pF capacitors are recommendable as bypass capacitor for V
Bypass capacitor for V
Coupling capacitors for input/output pins are intended to minimize RF serial impedance and cut DC.
To get flat gain from 100 MHz up, 1 000 pF capacitors are assembled on the test circuit. [Actually, 1 000 pF
IN
50
1 000 pF
C
CC
1
CC
, input and output pins
fluctuation.
1
1 000 pF
CC
IN
C
pin is intended to minimize V
50
3
V
6
CC
2, 3, 5
1 000 pF
C
1
4
1 000 pF
1
1 000 pF
C
4
C
3
V
6
To stabilize operation,
please connect R
CC
CC
R
50 to 200
2, 3, 5
1 000 pF
1
pin’s ground impedance. Therefore, stable bias can be
C
5
4
1 000 pF
CC
1
1
, C
C
pin and coupling capacitors for input/output
2
5
6
50
PC2745TB,
2, 3, 5
1 000 pF
OUT
C
6
4
1 000 pF
C
2
50
p
PC2746TB
fZs).]
OUT