SGA-6489 DC-3500 GHz Cascadable MMIC Amplifier
Preliminary
Basic Application Circuit
R
BIAS
1 uF
1000
pF
Application Circuit Element Values
Frequency (Mhz)
Reference
Designator
500
850
1950
2400
3500
V
S
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
4
1
SGA-6489
3
2
C
B
RF out
Recommended Bias Resistor Values for I
D
=75mA
R
BIAS
=( V
S
-V
D
) / I
D
Supply Voltage(V
S
)
R
BIAS
6V
12
8V
39
10 V
62
12 V
91
V
S
R
BIAS
Note: R
BIAS
provides DC bias stability over temperature.
1 uF
1000 pF
Mounting Instructions
1. Solder the copper pad on the backside of the
device package to the ground plane.
2. Use a large ground pad area with many plated
through-holes as shown.
3. We recommend 1 or 2 ounce copper. Measurement
for this data sheet were made on a 31 mil thick FR-4
board with 1 ounce copper on both sides.
A64
L
C
C
D
C
B
C
B
Pin # Function
Description
RF input pin. This pin requires the use of an
external DC blocking capacitor chosen for
the frequency of operation.
Connection to ground. For optimum RF
performance, use via holes as close to
ground leads as possible to reduce lead
inductance.
Part Identification Marking
4
4
1
RF IN
A64
2
A64Z
3
2, 4
3
GND
1
2
3
1
1
2
2
3
1
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-6489
SGA-6489Z
13"
13"
3000
3000
303 Technology Court, Broomfield, CO 80021
Phone: (800) SMI-MMIC
4
http://www.sirenza.com
EDS-100621 Rev. F
SIRENZA [ SIRENZA MICRODEVICES ]
