AD5930
TIMING CHARACTERISTICS
All input signals are specified with tr = tf = 5 ns (10% to 90% of V
DD
) and timed from a voltage level of (V
IL
+ V
IH
)/2.
See Figure 4 to Figure 7. DV
DD
= 2.3 V to 5.5 V, AGND = DGND = 0 V, all specifications T
MIN
to T
MAX
, unless otherwise noted.
Table 2.
1
Parameter
Limit at T
MIN
, T
MAX
Unit
Conditions/Comments
t
1
20
ns min
MCLK period
t
2
8
ns min
MCLK high duration
t
3
8
ns min
MCLK low duration
t
4
25
ns min
SCLK period
t
5
10
ns min
SCLK high time
t
6
10
ns min
SCLK low time
t
7
5
ns min
FSYNC to SCLK falling edge setup time
t
8
10
ns min
FSYNC to SCLK hold time
t
9
5
ns min
Data setup time
t
10
3
ns min
Data hold time
t
11
2 x t
1
ns min
Minimum CTRL pulse width
t
12
0
ns min
CTRL rising edge to MCLK falling edge setup time
t
13
10 x t
1
ns typ
CTRL rising edge to IOUT/IOUTB delay (initial pulse, includes initialization)
8 x t
1
ns typ
CTRL rising edge to IOUT/IOUTB delay (initial pulse, includes initialization)
t
14
2 x t
1
ns typ
Frequency change to SYNC output, saw sweep, each frequency increment
t
15
2 x t
1
ns typ
Frequency change to SYNC output, saw sweep, end of sweep
t
16
2 x t
1
ns typ
Frequency change to SYNC output, triangle sweep, end of sweep
t
17
20
ns max
MCLK falling edge after 16
th
clock edge to MSB out
1
Guaranteed by design, not production tested.
Rev. 0 | Page 6 of 28
MCLK
t
3
t
2
t
1
0
Figure 3. Master Clock
SCLK
FSYNC
SDATA
D15
D14
D2
D1
D0
D15
D14
t
7
t
9
t
6
t
8
t
10
t
5
t
4
0
Figure 4. Serial Timing
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