AD5306/AD5316/AD5326
Rev. F | Page 6 of 24
VDD = 2.5 V to 5.5 V; all specifications TMIN to TMAX, unless otherwise noted.
Table 3.
A, B Versions
Limit at TMIN, TMAX
Unit
Conditions/Comments
t1
2.5
μs min
SCL cycle time
t2
0.6
μs min
tHIGH, SCL high time
t3
1.3
μs min
tLOW, SCL low time
t4
0.6
μs min
tHD,STA, start/repeated start condition hold time
t5
100
ns min
tSU,DAT, data setup time
0.9
μs max
tHD,DAT, data hold time
0
μs min
t7
0.6
μs min
tSU,STA, setup time for repeated start
t8
0.6
μs min
tSU,STO, stop condition setup time
t9
1.3
μs min
tBUF, bus free time between a stop and a start condition
t10
300
ns max
tR, rise time of SCL and SDA when receiving
0
ns min
tR, rise time of SCL and SDA when receiving (CMOS compatible)
t11
250
ns max
tF, fall time of SDA when transmitting
0
ns min
tF, fall time of SDA when receiving (CMOS compatible)
300
ns max
tF, fall time of SCL and SDA when receiving
ns min
tF, fall time of SCL and SDA when transmitting
t12
20
ns min
LDAC pulse width
t13
400
ns min
SCL rising edge to LDAC rising edge
400
pF max
Capacitive load for each bus line
1 See Figure 2.
2 Guaranteed by design and characterization; not production tested.
3 A master device must provide a hold time of at least 300 ns for the SDA signal (referred to the VIH min of the SCL signal) to bridge the undefined region of SCL’s
falling edge.
4 CB is the total capacitance of one bus line in pF. tR and tF measured between 0.3 VDD and 0.7 VDD.
SCL
SDA
t1
t3
LDAC1
LDAC2
START
CONDITION
REPEATED START
CONDITION
STOP
CONDITION
NOTES
1ASYNCHRONOUS LDAC UPDATE MODE.
2SYNCHRONOUS LDAC UPDATE MODE.
t4
t6
t5
t7
t8
t2
t13
t4
t11
t10
t12
t9
02066-002
Figure 2. 2-Wire Serial Interface Timing Diagram