22
Ripple Noise
To ensure the image quality, a power supply with low ripple noise is needed.
Table 4-2
Parameter
Standard (pk-pk)
Unit
EXT_VCC
≤
250
mV
EXT_VCC Ripple
Figure 4-2
I/O Voltage
Table 4-3
Parameter
Condition
Minimum
Typical
Maximum
Unit
VIL
Low Level Input Voltage
- 0.3
0
0.8
V
VIH
High Level Input Voltage
2.0
3.3
3.6
V
VOL
Low Level Output Voltage
- 0.3
0
0.4
V
VOH
High Level Output Voltage
2.4
3.3
3.6
V
Summary of Contents for EM20-85
Page 1: ...SCANNING MADE SIMPLE EM20 85 OEM scan engine integration guide...
Page 4: ......
Page 26: ...20 Cable for 8 pin Box Connector RS 232 interface Figure 3 6...
Page 30: ...24 Standby Current Figure 4 5 Peak Current VDD 5 0V with NFC Figure 4 6...
Page 31: ...25 Working Current Figure 4 7 Standby Current Figure 4 8...
