Datasheet

AD7484
Rev. C | Page 5 of 20
TIMING CHARACTERISTICS
AV
DD
/DV
DD
= 5 V ± 5%, AGND = DGND = 0 V, V
REF
= external; all specifications T
MIN
to T
MAX
and valid for V
DRIVE
= 2.7 V to 5.25 V,
unless otherwise noted.
Table 2.
Parameter
1
Symbol Min Typ Max Unit
DATA READ
Conversion Time t
CONV
300 ns
Quiet Time Before Conversion Start t
QUIET
100 ns
CONVST
t
1
Pulse Width
5 100 ns
CONVST
Falling Edge to
t
2
BUSY
Falling Edge
20 ns
CS
Falling Edge to
t
3
RD
Falling Edge
0 ns
Data Access Time t
4
25 ns
CONVST
t
5
Falling Edge to New Data Valid
30 ns
BUSY
t
6
Rising Edge to New Data Valid
5 ns
Bus Relinquish Time t
7
10 ns
RD
Rising Edge to
t
8
CS
Rising Edge
0 ns
CS
t
14
Pulse Width
30 ns
RD
t
15
Pulse Width
30 ns
DATA WRITE
WRITE Pulse Width t
9
5 ns
Data Setup Time t
10
2 ns
Data Hold Time t
11
6 ns
CS
t
12
Falling Edge to WRITE Falling Edge
5 ns
WRITE Falling Edge to
CS
t
13
Rising Edge
0 ns
1
All timing specifications given are with a 25 pF load capacitance. With a load capacitance greater than this value, a digital buffer or latch must be used.