SGA-7489 データシートの表示（PDF） - Sirenza Microdevices => RFMD
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SGA-7489 Datasheet PDF : 4 Pages
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SGA-7489 DC-3000 MHz SiGe Amplifier
Preliminary
Basic Application Circuit
RBIAS
VS
1 uF 1000 C
pF
D
RF in
4
1 SGA-7489 3
CB
2
I
D
R
LDC
LC
Bias
Inductor
VD CB
RF out
VS
Gnd.
RBIAS
1 uF
1000 pF
CD
A74
LC
CB
CB
Application Circuit Element Values
Reference
Designator 100
Frequency (Mhz)
500
850
1950
2400
C
1000 pF 220 pF 100 pF 68 pF 56 pF
B
CD
100 pF 100 pF 68 pF 22 pF 22 pF
LC
470 nH 68 nH 33 nH 22 nH 18 nH
Required Bias Resistance for ID=115mA
Bias Resistance = RBIAS+ RLDC = ( VS-VD ) / ID
Supply Voltage(VS) 7 V 8 V 9 V 12 V
Bias Resistance 17
26
35
61
Bias resistor improves current stability over temperature.
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.
Part Identification Marking
4
A74
4
A74Z
123
123
Pin # Function
Description
1
RF IN RF input pin. This pin requires the use
of an external DC blocking capacitor
chosen for the frequency of operation.
2, 4 GND Connection to ground. For optimum RF
performance, use via holes as close to
ground leads as possible to reduce lead
inductance.
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.
See Application Note AN-075
for Package Outline Drawing
Part Number Ordering Information
Part Number
SGA-7489
SGA-7489Z
Reel Size
13"
13"
Devices/Reel
3000
3000
303 Technology Court, Broomfield, CO. 80021
Phone: (800) SMI-MMIC
4
http://www.sirenza.com
EDS-101801 Rev D
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