Data Sheet
AD5384
TIMING CHARACTERISTICS
Serial Interface
DVDDx = 2.7 V to 5.5 V; AVDDx = 4.5 V to 5.5 V; AGNDx = DGND = 0 V; all specifications TMIN to TMAX, unless otherwise noted. The
AD5384 must remain powered up when part of a multidevice system with a common I2C bus. Guaranteed by design and characterization, not production tested. All input signals are specified with tr = tf = 5 ns (10% to 90% of DVDDx) and are timed from a voltage level of 1.2 V.
Table 3.
Parameter
Min
Typ
Max
Unit
Description
t1
33
ns
SCLK cycle time
t2
13
ns
SCLK high time
t3
13
ns
SCLK low time
t4
13
ns
SYNC falling edge to SCLK falling edge setup time
13
ns
24th SCLK falling edge to SYNC falling edge
33
ns
Minimum SYNC low time
t7
10
ns
Minimum SYNC high time
t7A
140
ns
Minimum SYNC high time in readback mode
t8
5
ns
Data setup time
t9
4.5
ns
Data hold time
36
ns
24th SCLK falling edge to BUSY falling edge
t11
670
ns
BUSY pulse width low (single channel update)
20
ns
24th SCLK falling edge to LDAC falling edge
t13
20
ns
LDAC pulse width low
t14
100
2000
ns
BUSY rising edge to DAC output response time
t15
0
ns
BUSY rising edge to LDAC falling edge
t16
100
ns
LDAC falling edge to DAC output response time
t17
3
s
DAC output settling time boost mode off
t18
20
ns
CLR pulse width low
t19
40
s
CLR pulse activation time
30
ns
SCLK rising edge to SDO valid
5
ns
SCLK falling edge to SYNC rising edge
8
ns
SYNC rising edge to SCLK rising edge
t23
20
ns
SYNC rising edge to LDAC falling edge
1
Standalone mode only.
2
Daisy-chain mode only.
CL
50pF
TO OUTPUT PIN
VOH (MIN) OR
VOL (MAX)
200A
IOL
IOH
04652-
003
Figure 2. Load Circuit for Digital Output Timing
Rev. B | Page 7 of 32