3 of 10
RF3395
Rev A5 DS060908
7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical
support, contact RFMD at (+1) 336-678-5570 or sales-support@rfmd.com.
Package Drawing
Pin
Function
Description
Interface Schematic
1NC
No internal connections. It is not necessary to ground this pin.
2RF IN
RF input pin. This pin is NOT internally DC blocked. A DC blocking capacitor,
suitable for the frequency of operation, should be used in most applica-
tions. DC coupling of the input is not allowed, because this will override the
internal feedback loop and cause temperature instability.
3NC
No internal connections. It is not necessary to ground this pin.
4GND
Ground connection.
5GND
Ground connection.
6GND
Ground connection.
7NC
No internal connections. It is not necessary to ground this pin.
8RF OUT
RF output and bias pin. Biasing is accomplished with an external series
resistor and choke inductor to VCC. The resistor is selected to set the DC
current into this pin to a desired level. The resistor value is determined by
the following equation:
Care should also be taken in the resistor selection to ensure that the cur-
rent into the part never exceeds 80mA over the planned operating temper-
ature. This means that a resistor between the supply and this pin is always
required, even if a supply near 5.0V is available, to provide DC feedback to
prevent thermal runaway. Because DC is present on this pin, a DC blocking
capacitor, suitable for the frequency of operation, should be used in most
applications. The supply side of the bias network should also be well
bypassed.
9NC
No internal connections. It is not necessary to ground this pin.
10
GND
Ground connection.
11
GND
Ground connection.
12
GND
Ground connection.
Die
Flag
GND
Ground connection. To ensure best performance, avoid placing ground vias
directly beneath the part.
R
V
SUPPLY
V
DEVICE
–
()
I
CC
-------------------------------------------------------
=
RF OUT
RF IN
3.00
3.00
2.75
SQ
-B-
-A-
3
1
2 PLCS
0.10 C A
2 PLCS
0.10 C B
2 PLCS
0.10 C A
2 PLCS
0.10 C B
Shaded lead is pin 1.
Dimensions in mm.
-C-
12°
MAX
SEATING
PLANE
0.05 C
0.20
REF.
0.90
0.85
0.05
0.00
0.60
0.24
TYP
0.10
C AB
M
0.35
0.30
PIN 1 ID
R0.20
1.90
1.60
0.45
0.35
0.375
0.275
0.65
1.15
0.85
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