ADL5565
Data Sheet
GND ENBL
VPOS
P1
16
GND GND GND GND
VIP2 ENBL
15
14
13
C8
0.1µF
1
2
3
4
12
AGND
T2
R5
C1
J3
0Ω
0.01µF
R9
R11
R7
T1
C9
VIP1
VOP 11
34.8Ω
OPEN
84.5Ω
J1
0.01µF
R1
R3
0Ω
ADL5565
OPEN
C2
0.01µF
10
C13
OPEN
VIN1
VIN2
VON
R10
34.8Ω
R8
84.5Ω
R15
OPEN
C10
0.01µF
C12
J4
OPEN
R2
OPEN
R4
0Ω
OPEN
VCOM
9
C11
0.1µF
VCC VCC VCC VCC
R12
OPEN
R14
0Ω
R6
0Ω
5
6
7
8
J2
OPEN
VCOM
VPOS
C3
10µF
C4
0.1µF
C5
0.1µF
C6
0.1µF
C7
0.1µF
R13
0Ω
Figure 45. Evaluation Board Schematic
Table 16. Evaluation Board Configuration Options
Component Description
Default Condition
VPOS, GND
Ground and supply vector pins.
VPOS, GND = installed
C3, C4, C5,
C6, C7, C11
Power supply decoupling. The supply decoupling consists of a 10 µF capacitor (C3) to
ground. C4 to C7 are bypass capacitors. C11 ac couples VREF to ground.
C3 = 10 µF (Size D),
C4, C5, C6, C7, C11 = 0.1 µF (Size 0402)
J1, J2, R1, R2,
Input interface. The SMA labeled J1 is the input. T1 is a 1-to-1 impedance ratio balun
J1 = installed, J2 = not installed,
R1, R2 = open,
R3, R4, R5, R6, to transform a single-ended input into a balanced differential signal. Removing R13,
R12, R13, C1,
C2, C12, T1
installing R12 (0 Ω), and installing an SMA connector (J2) allows driving from a
differential source. C1 and C2 provide ac coupling. C12 is a bypass capacitor. R1 and
R2 provide a differential 50 Ω input termination. R3 to R6 are used to select the input
for the pin-strappable gain. The maximum gain is R3, R4, R5, R6 = 0 Ω and R1 and R2 =
open. The middle gain is R5 and R6 = 0 Ω, R3 and R4 = open, and R1 and R2 = 50 Ω. The
minimum gain is R3 and R4 = 0 Ω, R5 and R6 = open, and R1 and R2 = 33.2 Ω.
R3, R4, R5, R6, R13 = 0 Ω (Size 0402),
R12, = open,
C1, C2 = 0.01 µF (Size 0402),
C12 = open,
T1 = ETC1-1-13 (M/A-COM)
J3, J4, R7, R8,
Output interface. The SMA labeled J3 is the output. T2 is a 1-to-1 impedance ratio balun
J3 = installed, J4 = not installed,
R7, R8 = 84.5 Ω (Size 0402),
R9, R10 = 34.8 Ω (Size 0402),
R11, R15 = open (Size 0402),
R14 = 0 Ω (Size 0402)
C9, C10 = 0.01 µF (Size 0402),
C13 = open
R9, R10, R11, to transform a balanced differential signal to a single-ended signal. Removing R14,
R14, R15 C9,
C10, C13, T2
installing R15 (0 Ω), and installing an SMA connector (J4) allows differential loading. C13 is
a bypass capacitor. R7, R8, R9, and R10 are provided for generic placement of matching
components. The evaluation board is configured to provide a 200 Ω to 50 Ω impedance
transformation with an insertion loss of 17 dB. C9 and C10 provide ac coupling.
T2 = ETC1-1-13 (M/A-COM)
ENBL, P1, C8 Device enabled. C8 is a bypass capacitor. When the P1 jumper is set toward the VPOS label, ENBL, P1 = installed,
the ENBL pin is connected to the supply, enabling the device. In the opposite direction,
toward the GND label, the ENBL pin is grounded, putting the device in power-down mode.
C8 = 0.1 µF (Size 0402)
Table 17. Differential Values for Figure 45
Gain (dB)
R1 (Ω)
R2 (Ω)
6
29
29
12
15.5
33
Open
33
Open
Table 18. Alternative Differential Input Configuration for Figure 45
Gain (dB)
R1 and R2 (Ω)
C12 (µF)
C1 and C2 (Ω)
T1
6
12
15.5
Open
Open
Open
0.1
0.1
0.1
0
0
0
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Rev.B | Page 24 of 28