NGA-689 Ver la hoja de datos (PDF) - Stanford Microdevices
Número de pieza
componentes Descripción
Fabricante
NGA-689 Datasheet PDF : 8 Pages
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Pin #
1
2
3
4
PPrerelilmimininaaryry
NGA-689 DC-5.0 GHz 5.8V GaAs HBT
Function
RF IN
GND
RF OUT/
BIAS
GND
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 best
performance use via holes (as close to
ground leads as possible) to reduce lead
inductance.
RF output and bias pin. Bias should be
supplied to this pin through an external
series resistor and RF choke inductor.
Because DC biasing is present on this
pin, a DC blocking capacitor should be
used in most applications (see application
schematic). The supply side of the bias
network should be well bypassed.
Same as Pin 2.
Device Schematic
Application Schematic
Recommended Bias Resistor Values
Supply
Voltage(Vs)
8V
9V
12V
Rbias (Ohms) 27
39
75
For 8V operation or higher, a resistor with a power
handling capability of 1/2W or greater is recommended.
Cd1
Cd2
50 ohm
microstrip
2
1
3
Cb1
4
R bias
Vs
Lchoke
50 ohm
microstrip
Cb2
Reference
Designator
Cb1
Cb2
Cd1
Cd2
Lchoke
Function
DC Blocking
DC Blocking
Decoupling
Decoupling
AC Blocking
500 MHz
220 pF
220 pF
1 uF
100 pF
68 nH
850 MHz
100 pF
100 pF
1 uF
68 pF
33 nH
1950 MHz
68 pF
68 pF
1 uF
22 pF
22 nH
2400 MHz
56 pF
56 pF
1 uF
22 pF
18 nH
522 Almanor Ave., Sunnyvale, CA 94085
Phone: (800) SMI-MMIC
3
http://www.stanfordmicro.com
EDS-101442 Rev A
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