3.3V Spread-Spectrum EconOscillator
AC ELECTRICAL CHARACTERISTICS
(V
= 2.7V to 3.6V, T = -40°C to +85°C.)
A
CC
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
Frequency Stable After Prescaler
Change
1
period
Frequency Stable After DAC or
Offset Change
t
(Note 9)
0.1
0.1
1
ms
ms
µs
DACstab
Power-Up Time
t
+ t
(Note 10)
(Note 18)
0.5
200
por
stab
Enable of OUT After Exiting
Power-Down Mode
t
stab
OUT High-Z After Entering
Power-Down Mode
t
100
µs
pdn
Load Capacitance
C
(Note 11)
15
50
55
1
pF
%
L
Output Duty Cycle (OUT)
Rise and Fall Time (OE, PDN)
Default frequency
45
µs
AC ELECTRICAL CHARACTERISTICS—2-WIRE INTERFACE
(V
= 2.7V to 3.6V, T = -40°C to +85°C.)
A
CC
PARAMETER
SYMBOL
CONDITIONS
(Note 12)
MIN
TYP
MAX
400
100
UNITS
Fast mode
Standard mode
Fast mode
SCL Clock Frequency
f
kHz
SCL
1.3
4.7
0.6
Bus Free Time Between a STOP
and START Condition
t
(Note 12)
µs
µs
BUF
Standard mode
Fast mode
Hold Time (Repeated) START
Condition
t
(Notes 12, 13)
HD:STA
Standard mode
Fast mode
Standard mode
Fast mode
Standard mode
Fast mode
4.0
1.3
4.7
0.6
4.0
0.6
LOW Period of SCL
HIGH Period of SCL
t
(Note 12)
(Note 12)
µs
µs
LOW
t
HIGH
Setup Time for a Repeated
START
t
(Note 12)
µs
SU:STA
Standard mode
Fast mode
4.7
Data Hold Time
Data Setup Time
t
(Notes 12, 14, 15)
(Note 12)
0
0.9
µs
ns
ns
HD:DAT
Standard mode
Fast mode
Standard mode
Fast mode
100
250
t
SU:DAT
20 + 0.1C
300
1000
300
B
Rise Time of Both SDA and SCL
Signals
t
R
(Note 16)
Standard mode
Fast mode
20 + 0.1C
20 + 0.1C
20 + 0.1C
B
B
B
Fall Time of Both SDA and SCL
Signals
t
F
(Note 16)
ns
Standard mode
1000
4
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