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RF2642
Rev A8 DS060925
7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical
support, contact RFMD at (+1) 336-678-5570 or sales-support@rfmd.com.
Evaluation Board Schematic
8
7
6
1
16
15
14
13
9
5
10
11
12
2
3
4
Logic
Control
C9
10 nF
Gain Select
C10
10 nF
VCC
C11
1 nF
50
Ω μstrip
J5
LO IN
C12
1 nF
T1
TRANS6
C7
1 nF
C8
1 nF
50
Ω μstrip
J4
IF IN
C1
1 nF
L4
3.9 nH
R8*
DNI
50
Ω μstrip
J1
PA OUT
L1
8.2 nH
R1*
DNI
C2
10 nF
VPA2
L2
8.2 nH
R2*
DNI
C3
10 nF
VPA1
PD
C5
10 nF
C4
1 nF
R3*
DNI
50
Ω μstrip
J2
PA IN
R4
820
Ω
R5
5.1
Ω
R6
820
Ω
FL1
FLT BP
C6
1 nF
R7*
DNI
50
Ω μstrip
J3
MIX OUT
2642400B
NOTE:
1. R1, R2 and R8 are optional.
2. R4, R5 and R6 form T-attenuator with a loss of 1 dB.
For 0 dB loss, R4 and R6 are removed, and R5 is a 0
Ω short.
3. R3 and R7 are normally open.
4. FLT BP recommended is a Murata filter: SAFC836.5MC90T-TC12.
5. The microstrip on pin 4 is bridged to ground via 0
Ω 0402 size resistor.
The recommended setting is at maximum of PCB.
6. The microstrip on pin 3 is bridged to ground via 0
Ω resistor. The
recommended setting is at a distance of 35 mils from edge of device.
7. *DNI: Do Not Install
P1
1
2
3
CON3
P1-3
PD
GND
P2
1
2
3
CON3
P2-3
VCC
GND
P2-1
Gain Select
P3
1
2
3
CON3
P3-1
VPA1
GND
P3-3
VPA2
See Note 2
μstrip
μstrip
R9
0
Ω
R10
0
Ω
See Note 6
See Note 5
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