Datasheet

AD7609 Data Sheet
Rev. A | Page 8 of 36
Limit at T
MIN
, T
MAX
Parameter Min Typ Max Unit Description
t
13
Delay from
CS until DB[15:0] three-state disabled
19 ns V
DRIVE
above 4.75 V
24 ns V
DRIVE
above 3.3 V
30 ns V
DRIVE
above 2.7 V
37 ns V
DRIVE
above 2.3 V
t
14
3
Data access time after
RD falling edge
19 ns V
DRIVE
above 4.75 V
24 ns V
DRIVE
above 3.3 V
30
ns
V
DRIVE
above 2.7 V
37 ns V
DRIVE
above 2.3 V
t
15
6 ns
Data hold time after
RD falling edge
t
16
6 ns
CS to DB[15:0] hold time
t
17
22 ns
Delay from
CS rising edge to DB[15:0] three-state enabled
SERIAL READ OPERATION
f
SCLK
Frequency of serial read clock
20 MHz V
DRIVE
above 4.75 V
15 MHz V
DRIVE
above 3.3 V
12.5 MHz V
DRIVE
above 2.7 V
10 MHz V
DRIVE
above 2.3 V
t
18
Delay from
CS until D
OUT
A/D
OUT
B three-state disabled/delay from CS until
MSB valid
18 ns V
DRIVE
above 4.75 V
23
ns
V
DRIVE
above 3.3 V
35 ns V
DRIVE
= 2.3 V to 2.7 V
t
19
3
Data access time after SCLK rising edge
20 ns V
DRIVE
above 4.75 V
26 ns V
DRIVE
above 3.3 V
32 ns V
DRIVE
above 2.7 V
39 ns V
DRIVE
above 2.3 V
t
20
0.4 t
SCLK
ns SCLK low pulse width
t
21
0.4 t
SCLK
ns SCLK high pulse width
t
22
7 SCLK rising edge to D
OUT
A/D
OUT
B valid hold time
t
23
22 ns
CS rising edge to D
OUT
A/D
OUT
B three-state enabled
FRSTDATA OPERATION
t
24
Delay from
CS falling edge until FRSTDATA three-state disabled
18 ns V
DRIVE
above 4.75 V
23
ns
V
DRIVE
above 3.3 V
30 ns V
DRIVE
above 2.7 V
35 ns V
DRIVE
above 2.3 V
t
25
ns
Delay from
CS falling edge until FRSTDATA high, serial mode
18 ns V
DRIVE
above 4.75 V
23 ns V
DRIVE
above 3.3 V
30 ns V
DRIVE
above 2.7 V
35 ns V
DRIVE
above 2.3 V
t
26
Delay from
RD falling edge to FRSTDATA high
19 ns V
DRIVE
above 4.75 V
23 ns V
DRIVE
above 3.3 V
30 ns V
DRIVE
above 2.7 V
35 ns V
DRIVE
above 2.3 V