Zywyn Corporation
ZSP4425
TestCircuits
V
BATTERY
HON=VDD=VBATTERY=ON
HON=0V=OFF
0.1μF Low ESR
Decoupling
Capacitor
COSC=180pF
HON
VDD
COSC
VSS
Coil
D1
VIN=+1.5V
100Ω
EL1
EL2
8.2nF
IN4148
NOTE:
CINT=1800pF
ZSP4425
Keep coil as close to
ZSP4425 as possible
NOTE:
Keep high voltage traces
short and away from VDD
and clock lines
Figure 3. +1.5V Test Circuit
HON=V DD=ON
HON=0V=OFF
COSC =180pF
HON
VDD
COSC
VSS
VIN=3V
0.1 μF Low ESR
Decoupling
Capacitor
+
-
100Ω
Coil
D1
EL1
EL2
4nF
IN4148
NOTE:
Cint = 470pF
ZSP4425
Keep coil as close to
ZSP4425 as possible
NOTE:
Keep high voltage traces
short and away from VDD
and clock lines
Figure 4. +3.0V Test Circuit
Zywyn
7
October2005
rev. 04
ASIX [ ASIX ELECTRONICS CORPORATION ]
