Preliminary
NGA-486 DC-5 GHz Cascadable MMIC Amplifier
NGA-486 Basic Application Circuit
R
BIAS
1 uF
1000
pF
Application Circuit Element Values
Reference
Designator
Frequency (Mhz)
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
1
4
NGA-486
3
C
B
RF out
Recommended Bias Resistor Values for I
D
=80mA
Supply Voltage(V
S
)
R
BIAS
7.5 V
33
8V
39
10 V
68
12 V
91
2
V
S
R
BIAS
Note: R
BIAS
provides DC bias stability over temperature.
1 uF
1000 pF
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.
L
C
N4
C
D
C
B
C
B
Part Identification Marking
The part will be marked with an N4 designator on the
top surface of the package.
3
Pin #
1
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.
2
GND
4
N4
1
2
3
For package dimensions, refer to outline drawing at
www.stanfordmicro.com
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.
GND
Sames as Pin 2
4
Caution: ESD sensitive
Part Number Ordering Information
Part Number
NGA-486
Reel Size
7"
Devices/Reel
1000
Appropriate precautions in handling, packaging
and testing devices must be observed.
726 Palomar Ave., Sunnyvale, CA 94085
Phone: (800) SMI-MMIC
4
http://www.stanfordmicro.com
EDS-101104 Rev. D
STANFORD [ STANFORD MICRODEVICES ]
