ADL5336-EVALZ AD [Analog Devices], ADL5336-EVALZ Datasheet - Page 28

• Manufacturer Part Number: ADL5336-EVALZ
• Description: Cascadable IF VGAs
• Manufacturer: AD [Analog Devices]

ADL5336
BILL OF MATERIALS (BOM)
Table 11. Evaluation Board Configuration Options
Components
C1, C2, C5, C6, C7, C16,
C17, C18, C25, L1, L2
C3, C4, C21, T1
C10, C11, C14, C15, C23,
C24, R3, R4, R13, T4, T5
C8, C9, C22, R14, R15, T2
C19, C20, R5, R6, R7, R8, T3
R1, C12
R2, C13
P3
P2
R9, R10, R11, R12, C26,
C27, C28, C29, P1
P5
P4
Function
Power supply and ground decoupling. Nominal supply
decoupling consists of 0.1 µF capacitor to ground.
VGA1 input interface. The balun T1 has a 4:1 impedance ratio that
transforms a single-ended signal in a 50 Ω system into a
differential signal in a 200 Ω system. C3 and C4 provide ac
coupling into VGA1, and C21 provides an ac ground for the balun.
VGA2 input interface. The T4 and T5 baluns have 4:1 impedance
ratios that transform single-ended signals in a 50 Ω system into
differential signals in a 200 Ω system. The user has a choice of
either Input A or Input B, which is set by Bit B6 in the internal
register (see the register map in Table 5). C11, C14, C15, and C23
provide ac coupling into VGA2, and C10 and C24 provide an ac
ground for the baluns. R3, R4, and R13 are left open by default. AC
ground can be achieve by placing 0 Ω jumpers at R3 and R4. A
0 Ω jumper can be installed at R13 to drive Input B of VGA2 single
ended. Note that R4 must be open and R3 must have a 0 Ω
jumper installed.
VGA1 output interface. The T2 balun has a 4:1 impedance ratio
that transforms a differential signal in a 200 Ω system into a
single-ended signal in a 50 Ω system. C8 and C9 provide ac
coupling out of VGA1, and C22 provides an ac ground for the
balun. R14 and R15 can be made 0 Ω and dc-couple the output of
VGA1 into the input of VGA2 in cascading applications.
VGA2 output interface. The transmission line transformer, T3, has
a 1:1 impedance ratio that transforms a differential signal to a
single-ended signal. The 50 Ω impedance is the same on both the
primary and secondary side balun. C19 and C20 provide ac
coupling out of VGA2. R5, R6, R7, and R8 raise the impedance that
the output of VGA2 sees to 100 Ω differential.
Detector 1 interface. R1 serves as a 0 Ω jumper to connect the
integrating capacitor, C12, that is needed when VGA1 is being
used in AGC mode.
Detector 2 interface. R2 serves as a 0 Ω jumper to connect the
integrating capacitor, C13, that is needed when VGA2 is being
used in AGC mode.
Enable interface. The
high voltage to the ENBL pin. Jumper P3 is connected to VPOS.
MODE interface. The MODE pin must be pulled to a logic high to
be used in VGA mode. If AGC mode is desired, a logic low must be
applied to the MODE pin. The P2 jumper must be connected to
either VPOS (logic high) or ground (logic low).
Serial control interface. The digital interface sets the VGA1
setpoint, VGA2 setpoint, VGA2 input selection, VGA1 maximum
gain, and the VGA2 maximum gain of the device using the serial
interface lines CLK, LE, DATA, and SDO. RC filter networks are
provided on CLK and LE lines to filter the PC signals (possibly on
all the lines). CLK, DATA, SDO, and LE signals can be observed via
SMB connectors for debug purposes.
Analog VGA1 gain control. The range of the GAIN1 pin is from 0 V
to 1 V, creating a gain scaling of 35 mV/dB.
Analog VGA2 gain control. The range of the GAIN2 pin is from 0 V
to 1 V, creating a gain scaling of 35 mV/dB.
ADL5336
Rev. B | Page 28 of 32
is powered up by applying a logic
Default Conditions
C1, C2 = 10 µF (0805),
C5, C6, C7, C16, C17 = 0.1 µF (0402),
C18, C25 = 0.1 µF (0402),
L1, L2 = 33 μH (0805)
C3, C4, C21 = 0.1 µF (0402),
T1 = Mini-Circuits TC4-1W
C10, C11, C14 = 0.1 µF (0402),
C15, C23, C24 = 0.1 µF (0402),
R3, R4, R13 = open (0402),
T4, T5 = Mini-Circuits TC4-1W
C8, C9, C22 = 0.1 µF (0402),
R14, R15 = open (0402),
T2 = Mini-Circuits TC4-1W
C19, C20 = 0.1 µF (0402),
R5, R6 = 37.4 Ω (0402),
R7, R8 = 24.9 Ω (0402),
T3 = M/A-COM ETC1-1-13
R1 = 0 Ω (0402),
C12 = 0.1 µF (0402)
R2 = 0 Ω (0402),
C13 = 0.1 µF (0402)
P3 = installed for enable
P2 = installed
R9, R10, R11, R12 = 0 Ω (0402),
C26, C27, C28, C29 = open (0402)
P5 installed
P4 installed
Data Sheet