User guide

CS5509
DS125F3 5
3.3V SWITCHING CHARACTERISTICS (T
A
= 25 °C; VA+ = 5V ±5%; VD+ = 3.3V ±5%; Input
Levels: Logic 0 = 0V, Logic 1 = VD+; C
L
= 50 pF) (Note 2)
Parameter Symbol Min Typ Max Unit
Master Clock Frequency Internal Oscillator
External Clock
XIN
f
clk
30.0
30
32.768
-
53.0
330
kHz
kHz
Master Clock Duty Cycle 40 - 60 %
Rise Times Any Digital Input (Note 10)
Any Digital Output
t
rise
-
-
-
50
1.0
-
µs
ns
Fall Time Any Digital Input (Note 10)
Any Digital Output
t
fall
-
-
-
20
1.0
-
µs
ns
Start-Up
Power-On Reset Period (Note 11)
t
res
-10-ms
Oscillator Start-up Time XTAL = 32.768 kHz (Note 12)
t
osu
-500-ms
Wake-up Period (Note 13)
t
wup
-
1800/f
clk
-s
Calibration
CONV Pulse Width (CAL = 1) (Note 14)
t
ccw
100 - - ns
CONV and CAL High to Start of Calibration
t
scl
--
2/f
clk
+200
ns
Start of Calibration to End of Calibration
t
cal
-
3246/f
clk
-s
Conversion
CONV Pulse Width
t
cpw
100 - - ns
CONV High to Start of Conversion
t
scn
--
2/f
clk
+200
ns
Set Up Time BP/UP
stable prior to DRDY falling
t
bus
82/f
clk
--s
Hold Time BP/UP
stable after DRDY falls
t
buh
0--ns
Start of Conversion to End of Conversion (Note 15)
t
con
-
1624/f
clk
-s