SGA-4286 DC-5000 MHz Cascadable MMIC Amplifier
Preliminary
Basic Application Circuit
R
BIAS
Application Circuit Element Values
Frequency (Mhz)
Reference
Designator
500
850
1950
2400
3500
V
S
1 uF
1000
pF
C
D
L
C
C
B
C
D
L
C
220 pF
100 pF
68 nH
100 pF
68 pF
33 nH
68 pF
22 pF
22 nH
56 pF
22 pF
18 nH
39 pF
15 pF
15 nH
RF in
C
B
1
SGA-4286
3
2
C
B
4
RF out
Recommended Bias Resistor Values for I
D
=45mA
R
BIAS
=( V
S
-V
D
) / I
D
Supply Voltage(V
S
)
R
BIAS
6V
62
8V
110
10 V
150
12 V
200
V
S
R
BIAS
1 uF
1000 pF
Note: R
BIAS
provides DC bias stability over temperature.
L
C
C
D
C
B
Mounting Instructions
1. Use a large ground pad area under device pins 2
and 4 with many plated through-holes as shown.
2. We recommend 1 or 2 ounce copper. Measurements
for this data sheet were made on a 31 mil thick FR-4
board with 1 ounce copper on both sides.
A42
C
B
Pin #
Function
RF IN
Description
RF input pin. This pin requires the use
of an external DC blocking capacitor
chosen for the frequency of operation.
Connection to ground. Use via holes for
best performance to reduce lead
inductance as close to ground leads as
possible.
Part Identification Marking
3
3
1
2, 4
GND
4
A42
1
2
4
42Z
1
2
3
RF OUT/ RF output and bias pin. DC voltage is
BIAS
present on this pin, therefore a DC
blocking capacitor is necessary for
proper operation.
Caution: ESD sensitive
Appropriate precautions in handling, packaging
and testing devices must be observed.
Part Number Ordering Information
Part Number
Reel Size
Devices/Reel
See Application Note AN-075
for Package Outline Drawing
SGA-4286
SGA-4286Z
13"
13"
3000
3000
303 Technology Court, Broomfield, CO 80021
Phone: (800) SMI-MMIC
4
http://www.sirenza.com
EDS-100639 Rev. E
SIRENZA [ SIRENZA MICRODEVICES ]
