TIMING DIAGRAMS

FIGURE 4. AUTO ZERO TIMING

FIGURE 5. DATA REQUEST CYCLE TIMING

S1

S0

AutoZero

*

*

t

AZ

t

TS

t

AC

* Data Request at logic 1, output enable (don’t care)

/DR

t

DD

t

DRA

t

NDR

FIGURE 6. TIMING TABLE

AutoZero request

Autozero Cycle

port TriState time

Data Request Acknowledge

S1 Response after duty cycle

Data Delay

time before Next Data Request

Data Valid

Data Cycle

t

AZ

t

AC

t

TS

t

DRA

t

S1R

t

DD

t

NDR

t

DV

t

DC

100

*

27

0

30

50

1

2

1.3

*

34

ns

s

ms

µs

µs

µs

µs

µs

* T

SIGNAL

SYMBOL

MIN

TYP

MAX

UNITS

ADC180DS REV I FEB 05

t

S1R

duty cycle

S1

S0

S0

D0 - D7

t

DV

t

DC

enlarged detail

data on D0 - D7

valid upon rising

edge of S0