= 2.7 V to 5.5 V, unless otherwise noted. Temperature range as follows: A version = −40°C to +125°C.
Table 1.
Parameter
TEMPERATURE SENSOR AND ADC
Accuracy
1
A Version
±0.5
−0.87 to +0.82
2
±1.5
±2.0
±3.0
±2.0
±1.87
±2.0
±3.0
±3.0
10
800
25
2
Unit
°C typ
°C max
°C max
°C max
°C max
°C typ
°C max
°C typ
°C max
°C typ
Bits
ms typ
µs typ
Test Conditions/Comments
V
DD
= 3 V @ +40°C
V
DD
= 3 V @ +40°C
V
DD
= 3 V @ −40°C to +70°C
V
DD
= 3 V @ −40°C to +85°C
V
DD
= 3 V @ −40°C to +125°C
V
DD
= 3 V @ −40°C to +125°C
V
DD
= 5.5 V @ +40°C
V
DD
= 5.5 V @ −40°C to +85°C
V
DD
= 5.5 V @ −40°C to +85°C
V
DD
= 5.5 V @ −40°C to +125°C
Resolution
Update Rate, t
R
Temperature Conversion Time
POWER SUPPLIES
Supply Current
3
Peak Supply Current
4
Supply Current – Nonconverting
Inactive Serial Bus
5
Normal Mode @ 3 V
Normal Mode @ 5 V
Active Serial Bus
6
Normal Mode @ 3 V
Normal Mode @ 5 V
Shutdown Mode
DIGITAL INPUT
Input High Voltage, V
IH
Input Low Voltage, V
IL
Input Current, I
IN7
Input Capacitance, C
IN
DIGITAL OUTPUT (OPEN-DRAIN)
Output High Voltage, V
OH
Output Low Voltage, V
OL
Output High Current, I
OH
Output Capacitance, C
OUT
ALERT Output Saturation Voltage
AC ELECTRICAL CHARACTERISTICS
8, 9
Serial Clock Period, t
1
Data In Setup Time to SCL High, t
2
Data Out Stable after SCL Low, t
3
1.2
900
169
188
180
214
3
mA typ
µA max
µA typ
µA typ
µA typ
µA typ
µA max
Current during conversion
Peak current between conversions
Supply current with serial bus inactive. Part not
converting and D7 of configuration register = 0.
Supply current with serial bus active. Part not
converting and D7 of configuration register = 0.
D7 of configuration register = 1. Typical values
are 0.04 µA at 3 V and 0.5 µA at 5 V.
2.4
0.8
±1
10
2.4
0.4
1
10
0.8
2.5
50
0
V min
V max
µA max
pF max
V min
V max
µA max
pF max
V max
µs min
ns min
ns min
V
IN
= 0 V to V
DD
All digital inputs
I
OL
= 1.6 mA
V
OH
= 5 V
Typ = 3 pF
I
OUT
= 4 mA
See Figure 2
See Figure 2
See Figure 2
Rev. E | Page 3 of 20
AD7414/AD7415
Parameter
SDA Low Setup Time to SCL Low
(Start Condition), t
4
SDA High Hold Time after SCL High
(Stop Condition), t
5
SDA and SCL Fall Time, t
6
Power-Up Time
A Version
50
50
90
4
Unit
ns min
ns min
ns max
µs typ
Test Conditions/Comments
See Figure 2
See Figure 2
See Figure 2
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.
This DC regulated switching power supply was purchased in Shenzhen HuaqiangbeiThe DC voltage output range is 0-30VMaximum DC current output 5A[[i]This post was last edited by dongguanze on 2011-7-31 2...
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