Texas Instruments TRF3765 Series, User Manual, Page: 5 / 21

C41
47pF
C17
47pF
DNI
D2
LD
LED AMBER
1 2
C23
1uF
C72
0.1uF
DNI
C31
47pF
C53
1uF
C3
10nF
R10
0
DNI
1K
FB2
C21
10nF
R23 100
J4
LO4_OUTP
1
5234
SMA
END
TP18
BLU
VCC_LO4
C51
4.7pF
C28
1uF
1K
FB11
DNI
1K
FB4
C38
47pF
C59
10nF
R3 0
J5
LO1_OUTP
1
5234
SMA
END
R34
0
DNI
TP20
GRN
VCC_DIG
1K
FB13
C37
1uF
R19
15K
TP15
BLU
VCC_LO1
J9
LO3_OUTM
1
5234
SMA
END
C18
10nF
R40
0
DNI
R24 100
C8
4.7pF
R12
0
DNI
C49
27pF
C11
47pF
C12
10nF
R7 0
TP13
GRN
VCC_TK
U1
TRF3765
GND_DIG
1
VCC_DIG
2
DATA
3
CLOCK
4
STROBE
5
READBACK
6
VCC_DIV
7
GND_BUFF1
8
L
O
1
_
O
U
T
P
9
L
O
1
_
O
U
T
M
1
0
L
O
2
_
O
U
T
M
1
1
L
O
2
_
O
U
T
P
1
2
L
O
3
_
O
U
T
P
1
3
L
O
3
_
O
U
T
M
1
4
L
O
4
_
O
U
T
M
1
5
L
O
4
_
O
U
T
P
1
6
GND_BUFF2
17
EXTVCO_IN
18
EXTVCO_CTRL
19
VCC_TK
20
VCC_OSC
21
GND_OSC
22
VTUNE_IN
23
VTUNE_REF
24
C
P
_
R
E
F
2
5
C
P
_
O
U
T
2
6
V
C
C
_
C
P
2
7
V
C
C
_
P
L
L
2
8
G
N
D
2
9
R
E
F
_
IN
3
0
G
N
D
3
1
L
D
3
2
P
W
R
P
A
D
3
3
R27 100
1K
FB12
C50
1uF
1K
FB6
R30
0
DNI
R11 0
C9
1uF
J11
LO2_OUTM
1
5234
SMA
END
R25 100
C10 4.7pF
R28 100
J1
LO1_OUTM
1
5234
SMA
END
C52
10nF
C39
1uF
1K
FB5
C6
47pF
C7
27pF
R33 0
1K
FB15
R37
0
DNI
C27
27pF
TP8
GRN
LD
TP23
GRN
VCC_OSC
C13
10nF
R26 100
TP19
GRN
VCC_DIV
C43
.1uF
DNI
C47
47pF
C54
1uF
J2
EXT_VCO
1
5234
SMA
END
TP22
GRN
VCC_CP
R29 0
R35 0
SJP1
EXTVCO_CTRL_OUT
1
3
2
C55
27pF
J3
LO4_OUTM
1
5234
SMA
END
C56
10nF
C45
1uF
C57
4.7pF
C44
47pF
DNI
TP16
BLU
VCC_LO2
R39
0
DNI
R31 0
R1
49.9
DNI
C46
47pF
J6
LO3_OUTP
1
5234
SMA
END
TP21
GRN
VCC_PLL
C16
.1uF
DNI
C48
27pF
R22 100
TP17
BLU
VCC_LO3
R36
0
DNI
1K
FB8
1K
FB14
J10
LO2_OUTP
1
5234
SMA
END
C22
4.7pF
C32
47pF
C40
1uF
R21 100
1K
FB1
R32
0
DNI
C24
4.7pF
R2 0 LO1P
LO1M
LO2M
LO2P
LO3P
LO3M
LO4M
LO4P
EXTVCO
EXT_VCO
LO1_P
LO1_M
LO2_M
LO2_P LO3_P
LO3_M
LO4_M
LO4_P
GND GND GND
GND
GND
GND
GND
GND GND GND GND
GND
GND
GND
GND GND GND
GND
GND
GND
GND
GND GND GND GND
GND
GND
GND GND
VCC2
GND GND GND
VCC2
GND
GND GND
GND
VCC2
GND
GND
GND GND
VCC1
GND
VCC3
VCC2
GND GND
GND
GND GND GND
VCC2
GND GND
GND
GND
VCC2
GND
GND
VCC1
VCC1
VCC1
VCC1
GND
GND
DATA SH2
CLK SH2
STROBE SH2
RDBK SH2
REFIN SH2
RF_VTUNE SH2
RF_CP_OUT SH2
RF_CP_REF
RF_VTUNE_REF
SHUNT 2-3
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Physical Description
Table 2. Integer and Fractional Mode Configurations
Item Fractional Mode Integer Mode
Oscillator Y1 frequency 61.44 MHz Y1 frequency 40 MHz
Typical PFD frequency 30.72 MHz 1.6 MHz
C20 = 2200 pF C20 = 47 pF
C19 = 22000 pF C19 = 560 pF
R6 = 475 Ω R6 = 10 k Ω
Loop filter components R5 = 475
Ω
R5 = 5 k
Ω
C14 = 220 pF C14 = 4.7 pF
R4 = 475
Ω
R4 = 0
Ω
C15 = 220 pF C15 = open
Configuration file TRF3765.FracMode.3p3Vtank.2600MHz.txt TRF3765.IntMode.3p3Vtank.2600MHz.txt
4 Physical Description
The TRF3765EVM is designed to be a high-performance platform for the TRF3765 device. This section
describes the schematic, layout and stackup, and bill of materials corresponding to Revision D boards.
4.1 Schematic
Figure 2. TRF3765EVM Schematic, Page 1 of 3
5 SLWU076A – November 2011 – Revised July 2012 TRF3765 Integer/Fractional-N PLL With Integrated VCO Evaluation Module
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