ADT7420 Datasheet, PDF (4/24 Pages) Analog Devices – ±0.25°C Accurate, 16-Bit Digital I2C Temperature Sensor

ADT7420
Preliminary Technical Data
I²C TIMING SPECIFICATIONS
T_A = −40°C to +150°C, V_DD = 2.7 V to 5.5 V, unless otherwise noted. All input signals are specified with rise time (t_R) = fall time (t_F) = 5 ns
(10% to 90% of V_DD) and timed from a voltage level of 1.6 V.
Table 2.
Parameter
SERIAL INTERFACE^{1, 2}
SCL Frequency
SCL High Pulse Width, t_HIGH
SCL Low Pulse Width, t_LOW
SCL, SDA Rise Time, t_R
SCL, SDA Fall Time, t_F
Hold Time (Start Condition), t_HD:STA
Setup Time (Start Condition), t_SU:STA
Data Setup Time, t_SU:DAT
Setup Time (Stop Condition), t_SU:STO
Data Hold Time, t_HD:DAT (Master)
Bus-Free Time (Between Stop and Start Condition), t_BUF
Min Typ Max
0
400
0.6
1.3
0.3
0.3
0.6
0.6
0.25
0.35
0.6
0
1.3
Unit
kHz
µs
µs
µs
µs
µs
µs
µs
µs
µs
µs
µs
Test Conditions/Comments
See Figure 2
After this period, the first clock is generated
Relevant for repeated start condition
V_DD ≥ 3.0 V
V_DD < 3.0 V
1 _{Sample tested during initial release to ensure compliance.}
2 _{All input signals are specified with input rise/fall times = 3 ns, measured between the 10% and 90% points. Timing reference points at 50% for inputs and outputs.}
Output load = 10 pF.
Timing Diagram
SCL
t_LOW ^tR
t_HD:STA
t_HD:DAT
SDA
t_BUF
P
S
t_F
t_HIGH
t_SU:DAT
t_HD:STA
t_SU:STA
S
Figure 2. Serial Interface Timing Diagram
t_SU:STO
P
Rev. PrA | Page 4 of 4