
8201, 8202, 8203, 8204 Acceleration Processor Data Sheet, DS-0157-05
Page 259
Exar Confidential
10.3 Power Supplies
The following subsections provide details concerning the digital and analog power supply
connections on the 820x device. Generally speaking, analog supplies can be derived from
the same power source as the digital supplies, but are more noise-sensitive and require
additional filtering and careful layout/routing.
10.3.1
Digital Power Supplies
10.3.2
Analog Power Supplies
Table 10-3. VDD_25_33 Power Supply Requirements
Parameter
Description
Min
Max
Units
Operating range
Voltage range for nominal
operating conditions for 2.5V
2.25
2.75
V
Voltage range for nominal
operating conditions for 3.3V
2.97
3.63
V
Rise time
Time from 10% to 90% mark
0.1
10
ms
Overshoot
Maximum overshoot allowed
80
mV
Ripple
Maximum voltage ripple
60
mV
Table 10-4. VDD_10 Power Supply Requirements
Parameter
Description
Min
Max
Units
Operating range
Voltage range for nominal
operating conditions
0.95
1.05
V
Rise time
Time from 10% to 90% mark
0.1
10
ms
Overshoot
Maximum overshoot allowed
50
mV
Ripple
Maximum voltage ripple
30
mV
Table 10-5. VDD_25A Power Supply Requirements
Parameter
Description
Min
Max
Units
Operating range
Voltage range for nominal
operating conditions
2.38
2.63
V
Rise time
Time from 10% to 90% mark
0.1
10
ms
Overshoot
Maximum overshoot allowed
80
mV
Ripple
Maximum voltage ripple
60
mV