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3v switching characteristics – Cirrus Logic CS5508 User Manual

Page 7

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3.3V SWITCHING CHARACTERISTICS

(T

A

= T

MIN

to T

MAX

VA+ = 5V

± 10%;

VD+ = 3.3V

± 5%; VA- = -5V ± 10%; Input Levels: Logic 0 = 0V, Logic 1 = VD+; CL = 50 pF.) (Note 2)

Parameter

Symbol

Min

Typ

Max

Units

Master Clock Frequency:

Internal Oscillator:

-A,B

-S

External Clock:

XIN

or

f

clk

30.0

30.0

30

32.768

32.768

-

53.0

34.0

163

kHz

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 Times:

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
Set Up Time

A0, A1 to CONV High

t

sac

50

-

-

ns

Hold Time

A0, A1 after CONV High

t

hca

100

-

-

ns

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

CS5505/6/7/8

DS59F4

7

CS5505/6/7/8

DS59F7

7

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