SBF-4089 Datasheet, PDF (4/5 Pages) List of Unclassifed Manufacturers – DC-500 MHz, Cascadable InGaP/GaAs HBT MMIC Amplifier

Preliminary
SBF-4089 DC-500 MHz Cascadable MMIC Amplifier
Basic Application Circuit
V_S
R_BIAS
1 uF 1000
pF
C_D
RF in
4
1
3
SBF-4089
C_B
6.8nH
2
L₁
L_C
RF out
C_B
Application Circuit Element Values
Reference
Designator
C_B
C_D
L_C
L1
70
1 uF
100pF
6.8 uH
6.8nH
Frequency (Mhz)
100
240
500
1000 pF 1000 pF 220 pF
100 pF 100 pF 100pF
1.2 uH 1.2 uH 68 nH
6.8nH
6.8nH 6.8nH
850
100 pF
68pF
33nH
6.8nH
Recommended Bias Resistor Values for I_D=90mA
R_BIAS=( V_S-V_D ) / I_D
Supply Voltage(V_S) 7.5 V 8 V 10 V 12 V
R_BIAS
27
33
56 75
Note: R_BIAS provides DC bias stability over temperature.
Rbias
CD
LC
CB
L1
CB
Mounting Instructions
1. NOTE: For broadband RF unconditional stability do not
put GND vias under the exposed backside GND paddle.
2. Solder the copper pad on the backside of the
device package to the ground plane.
3. Use a large ground pad area with many plated
through-holes as shown.
4. 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
4
BF4
BF4Z
123
Tin-Lead
123
Lead Free
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. Use via holes
for best performance to reduce lead
inductance as close to ground leads as
possible.
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
SBF-4089
7"
SBF-4089Z
7"
1000
1000
303 South Technology Court, Broomfield, CO 80021
Phone: (800) SMI-MMIC
4
http://www.sirenza.com
EDS-103412 Rev. C