© 2005 Ubicom, Inc. All rights reserved.
- 41 -
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SX20AC/SX28AC
17.3 AC Characteristics
SX20/28AC at 0 - 75MHz (Temp Range: 0
°
C
<= Ta <= +70
°
C)
SX20/28AC at 0 - 50MHz (Temp Range: -40
°
C
<= Ta <= +85
°
C)
Note: Data in the Typical ("TYP") column is at 25
°
C unless otherwise stated.
17.4 Comparator DC and AC Specifications (50 MHz and 75 MHz Operation)
Symbol
Parameter
Min
Typ
Max
Units
Conditions
F
osc
External Frequency into OSC1
DC
-
32
1.0
4.0
10
24
50
75
KHz
MHz
MHz
MHz
MHz
MHz
MHz
LP1
LP2
RC
XT1
XT2
HS1
HS3
Crystal Frequency
DC
0.032
DC
0.032
1.0
1.0
-
32
1.0
4.0
10.0
24.0
50
KHz
MHz
MHz
MHz
MHz
MHz
LP1
LP2
RC
XT1
XT2
HS1
T
osc
External Period into OSC1
31.25
1.0
250
100
41.7
20
13.3
-
-
µs
µs
ns
ns
ns
ns
ns
LP1
LP2
RC
XT1
XT2
HS1
HS3
Crystal Period
31.25
1.0
250
0.1
41.7
20
-
-
31.25
-
31.25
1000.0
1000.0
µs
µs
µs
µs
ns
ns
LP1
LP2
RC
XT1
XT2
HS1
T
osL
, T
osH
Clock in (OSC1) Low or High Time
2.0
50
8.0
5.3
-
-
µs
ns
ns
ns
LP1/LP2
XT1/XT2
HS1
HS3
Parameter
Conditions
Min
Typ
Max
Units
Input Offset Voltage
0.4V < Vin < Vdd 1.5V
+/- 10
+/- 25
mV
Input Common Mode Voltage Range
0.4
Vcc 1.3
V
Voltage Gain
300k
V/V
DC Supply Current (enabled)
Vdd = 5.5V
120
µA
Response Time
V
overdrive
= 25mV
250
ns