adl5353 Analog Devices, Inc., adl5353 Datasheet - Page 20

• Manufacturer Part Number: adl5353
• Description: 2200 Mhz To 2700 Mhz Balanced Mixer, Lo Buffer, If Amplifier, And Rf Balun Adl5353
• Manufacturer: Analog Devices, Inc.

ADL5353
Table 7. Evaluation Board Configuration
Components
C2, C6, C8, C18,
C19, C20, C21
C1, C4, C5, Z1
T1, C17, L4, L5,
R1, R24, R25
C10, C12, R4
R21
C22, L3, R9, R14,
R22, R23, VGS0,
VGS1
Function
Power
supply
decoupling
RF input
interface
IF output
interface
LO interface
PWDN
interface
Bias control
Description
Nominal supply decoupling consists of a 10 µF capacitor to
ground in parallel with a 10 pF capacitor to ground positioned
as close to the device as possible.
The input channels are ac-coupled through C1. C4 and C5
provide bypassing for the center taps of the RF input baluns.
The open-collector IF output interfaces are biased through
pull-up choke inductors, L4 and L5. T1 is a 4:1 impedance
transformer used to provide a single-ended IF output interface,
with C17 providing center-tap bypassing. Remove R1 for
balanced output operation.
C10 and C12 provide ac coupling for the LO1_IN and LO2_IN
local oscillator inputs. LOSEL selects the appropriate LO input
for both mixer cores. R4 provides a pull-down to ensure that
LO1_IN is enabled when the LOSEL test point is logic low. LO2_IN
is enabled when LOSEL is pulled to logic high.
R21 pulls the PWDN logic low and enables the device. The
PWR_UP test point allows the PWDN interface to be exercised
using the external logic generator. Grounding the PWDN pin
for nominal operation is allowed. Using the PWDN pin when
supply voltages exceed 3.3 V is not allowed.
R22 and R23 form a voltage divider to provide 3 V for logic
control, bypassed to ground through C22. VGS0 and VGS1
jumpers provide programmability at the VGS0 and VGS1 pins.
It is recommended to pull these two pins to ground for
nominal operation. R9 sets the bias point for the internal LO
buffers. R14 sets the bias point for the internal IF amplifier.
Rev. 0 | Page 20 of 24
Default Conditions
C2 = 10 µF (size 0603)
C6, C8, C20, C21 = 10 pF (size 0402)
C18, C19 = 100 pF (size 0402)
C1 = 1.5 pF (size 0402)
C4 = 10 pF (size 0402)
C5 = 0.01 µF (size 0402)
Z1 = 10 nH (size 0402)
T1 = TC4-1W+ (Mini-Circuits )
C17 = 150 pF (size 0402)
L4, L5 = 470 nH (size 1008)
R1, R24, R25 = 0 Ω (size 0402)
C10, C12 = 22 pF (size 0402)
R4 = 10 kΩ (size 0402)
R21 = 10 kΩ (size 0402)
C22 = 1 nF (size 0402)
L3 = 0 Ω (size 0603)
R9 = 1.1 k Ω (size 0402)
R14 = 910 Ω (size 0402)
R22 = 10 k Ω (size 0402)
R23 = 15 kΩ (size 0402)
VGS0 = VGS1 = 3-pin shunt