50 OHM APPLICATION CIRCUIT: 40--800 MHz
VSUPPLY
R1
C3
C4
C5
RF
INPUT
Z1
Z2
C1
L1
DUT
Z3
VCC
RF
OUTPUT
Z4
Z5
C2
Z1, Z5
Z2
Z3
0.347 x 0.058 Microstrip
0.575 x 0.058 Microstrip
0.172 x 0.058 Microstrip
Z4
0.403 x 0.058 Microstrip
PCB Getek Grade ML200C, 0.031, r = 4.1
Figure 14. 50 Ohm Test Circuit Schematic
30
S21
20
10
0
--10
S22
--20
R1
C5
C4
C3
L1
C1
C2
--30
--40
0
S11
200
400
VCC = 5.6 Vdc
600
800
f, FREQUENCY (MHz)
Figure 15. S21, S11 and S22 versus Frequency
MMG30XX
Rev 2
Figure 16. 50 Ohm Test Circuit Component Layout
Table 8. 50 Ohm Test Circuit Component Designations and Values
Part
Description
C1, C2, C3
0.01 F Chip Capacitors
C4
1000 pF Chip Capacitor
C5
47 pF Chip Capacitor
L1
470 nH Chip Inductor
R1
8.2 Ω Chip Resistor
Part Number
C0603C103J5RAC
C0603C102J5RAC
C0805C470J5RAC
BK2125HM471--T
RK73B2ATTE8R2J
Manufacturer
Kemet
Kemet
Kemet
Taiyo Yuden
KOA Speer
Table 9. Supply Voltage versus R1 Values
Supply Voltage
6
7
8
9
10
11
12
V
R1 Value
6.9
24
41
59
76
93
110
Note: To provide VCC = 5.6 Vdc and ICC = 58 mA at the device.
RF Device Data
Freescale Semiconductor, Inc.
MMG3001NT1
5