Rev. 0.3 7/15
Copyright © 2015 by Silicon Laboratories
Si535x-B20QFN-EVB
Si535x-B20QFN-EVB
Si5350/51 20-QFN E
VALUATION
B
OARD
U
SER
’
S
G
UIDE
Description
The Si535x-B20QFN-EVB is used for evaluating the
Si5350/51 any-frequency, 0.0025–200 MHz CMOS
clock gen VCXO.
Features
Fully-powered from a single USB port
Onboard 27 MHz crystal for asynchronous operation
SMA and test point hook for interfacing to an
external clock reference
Jumper-selectable VDD and VDDOx allows device
to operate at 1.8 (VDDO only), 2.5, or 3.3 V
Voltage supply jumpers provide easy access for use
with external supplies
Functional Block Diagram
Jumper Selectable Vreg
1.8 V (VDDO only) / 2.5 V / 3.3 V
CLK0
CLK1
VDDO0
VReg
VReg
VReg
Vreg*
CLK2
CLK3
VDDO1
CLK4
CLK5
VDDO2
CLK6
CLK7
VDDO3
Si5350/51
I2C
Vreg*
CLKIN
XTAL
I2
C
Bu
s
VDD
MCU
USB
Connector
Status
LEDs
Reset
Switch
V
C
