2 GHz Application Ckt. Board
+Vcc
Ground
Preliminary
Preliminary
SGA-7489 DC-3000 MHz 5V SiGe Amplifier
The SGA-7489 may be tuned in the manner
shown below for operation at 2 GHz.
Component Parts List
Rb1
Rb2
Cd2
Component
Ty pe
Cc1,Cc2,
Cd1
CM1
Cc1
Value
100 pF
1.2 pF
1.5 pF
0.1 uF
22 nH
30 Ohms, 1/4
W
Manufacturer P/N
ROHM
ROHM
ROHM
ROHM
TOKO
ROHM
MCH185A101JK
MCH185A1R2JK
MCH185A1R5JK
MCH182FN1042K
LL1608FS22NJ
Type MRC 18
SGA-7489
Cd1
Lb
CM1
Cc1
CM2
CM2
Cd2
Lb
IN
OUT
STANFORD MICRODEVICES
ECB-100607 Rev-A
SOT-89 Eval Board
+7V
Rb2
Rb1,Rb2
Table of Delay Elements
Ref.
Desig.
Zo
(Ohms)
Phase Delay @ 2 GHz
(Degrees)
Rb1
Cd1
Z1
Cd2
50
50
50
14.5
34.1
21.5
Z2
Lb
Cc1
RF input
Z1
Z2
Z3
Cc2
RF Output
SGA-7489
Z3
CM1
CM2
Note: Separation Distance between via
holes on board represents approx. 5.4
Degrees phase shift @ 2GHz for equivalent
distance on microstrip.
Board material
is GETEK,e=4.1
SGA-7489 2 GHz Application Circuit
SGA-7489 2 GH z Tuned Application C kt. Summary D ata Table
Ty pical
25
o
C
18.6
3.1
36.1
20.8
10.0
23.8
18.3
3.3
36.0
20.4
11.2
23.0
18.2
3.7
34.5
19.9
16.3
22.1
Unit
dB
dB
dBm
dBm
dB
dB
dB
dB
dBm
dBm
dB
dB
dB
dB
dBm
dBm
dB
dB
Test Condition
(I
D
= 130 mA, unless otherwise noted)
Parameter
1700 MHz
Gain
Noise Figure
Output IP3
Output P1dB
Input Return Loss
Reverse Isolation
1900 MHz
Gain
Noise Figure
Output IP3
Output P1dB
Input Return Loss
Reverse Isolation
2100 MHz
Gain
Noise Figure
Output IP3
Output P1dB
Input Return Loss
Reverse Isolation
Z
S
= 50 Ohms
Tone spacing = 1 MHz, Pout per tone = 0 dBm
Z
S
= 50 Ohms
Tone spacing = 1 MHz, Pout per tone = 0 dBm
Z
S
= 50 Ohms
Tone spacing = 1 MHz, Pout per tone = 0 dBm
726 Palomar Ave., Sunnyvale, CA 94085
Phone: (800) SMI-MMIC
5
http://www.stanfordmicro.com
EDS-101801 Rev A
STANFORD [ STANFORD MICRODEVICES ]
