Datasheet

AD7414/AD7415
Rev. F | Page 4 of 20
Parameter A Version Unit Test Conditions/Comments
AC ELECTRICAL CHARACTERISTICS
8, 9
Serial Clock Period, t
1
2.5 μs min See Figure 2
Data In Setup Time to SCL High, t
2
50 ns min See Figure 2
Data Out Stable after SCL Low, t
3
0 ns min See Figure 2
SDA Low Setup Time to SCL Low
(Start Condition), t
4
50 ns min See Figure 2
SDA High Hold Time after SCL High
(Stop Condition), t
5
50 ns min See Figure 2
SDA and SCL Fall Time, t
6
90 ns max See Figure 2
Data Hold Time, t
7
35 ns min See Figure 2
Power-Up Time 4 μs typ
1
Accuracy specifications apply only to voltages listed under Test Conditions. See Temperature Accuracy vs. Supply section for typical accuracy performance over the
full V
DD
supply range.
2
100% production tested at 40°C to these limits.
3
These current values can be used to determine average power consumption at different one-shot conversion rates. Average power consumption at the automatic
conversion rate of 1.25 kHz is 940 μW.
4
This peak supply current is required for 29 μs (the conversion time plus power-up time) out of every 800 μs (the conversion rate).
5
These current values are derived by not issuing a stop condition at the end of a write or read, thus preventing the part from going into a conversion.
6
The current is derived assuming a 400 kHz serial clock being active continuously.
7
On power-up, the initial input current, I
IN
, on the AS pin is typically 50 μA.
8
The SDA and SCL timing is measured with the input filters turned on so as to meet the fast mode I
2
C specification. Switching off the input filters improves the transfer
rate but has a negative effect on the EMC behavior of the part.
9
Guaranteed by design. Not tested in production.
SCL
SDA
DATA IN
SDA
DATA OUT
t
1
t
2
t
7
t
3
t
4
t
5
t
6
02463-002
Figure 2. Diagram for Serial Bus Timing