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ADM1023
Table 3. PIN ASSIGNMENT
Pin No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
Mnemonic
NC
V DD
D+
D ?
NC
ADD1
GND
GND
NC
ADD0
ALERT
SDATA
NC
SCLK
STBY
NC
Description
No Connect
Positive Supply, 3.0 V to 5.5 V
Positive Connection to Remote Temperature Sensor
Negative Connection to Remote Temperature Sensor
No Connect
Three-state Logic Input, Higher Bit of Device Address
Supply 0 V Connection
Supply 0 V Connection
No Connect
Three-state Logic Input, Lower Bit of Device Address
Open-drain Logic Output Used as Interrupt or SMBus ALERT
Logic Input/Output, SMBus Serial Data. Open-drain Output
No Connect
Logic Input, SMBus Serial Clock
Logic Input Selecting Normal Operation (High) or Standby Mode (Low)
No Connect
Table 4. ELECTRICAL CHARACTERISTICS (T A = T MIN to T MAX , V DD = 3.0 V to 3.6 V, unless otherwise noted. (Note 1)
Parameter
Test Conditions/Comments
Min
Typ
Max
Unit
Power Supply and ADC
Temperature Resolution, Local Sensor
Temperature Resolution, Remote Sensor
Temperature Error, Local Sensor
Temperature Error, Remote Sensor
Relative Accuracy
Supply Voltage Range (Note 3)
Undervoltage Lockout Threshold
Undervoltage Lockout Hysteresis
Power-on Reset Threshold
POR Threshold Hysteresis
Standby Supply Current
Average Operating Supply Current
Autoconvert Mode, Averaged Over 4 Sec
Conversion Time
Remote Sensor Source Current
D ? Source Voltage
Address Pin Bias Current (ADD0, ADD1)
Guaranteed No Missed Codes
Guaranteed No Missed Codes
T A = 60 ? C to 100 ? C
T A = 0 ? C to 120 ? C
T A , T D = 60 ? C to 100 ? C (Note 2)
T A , T D = 0 ? C to 120 ? C (Note 2)
T A = 60 ? C to 100 ? C
V DD Input, Disables ADC, Rising Edge
V DD , Falling Edge (Note 4)
V DD = 3.3 V, No SMBus Activity
SCLK at 10 kHz
0.25 Conversions/Sec Rate
2 Conversions/Sec Rate
From Stop Bit to Conversion Complete
(Both Channels) D+ Forced to D ? + 0.65 V
High Level (Note 4)
Low Level (Note 4)
Momentary at Power-on Reset
1.0
0.125
? 1.5
? 3.0
? 1.0
? 3.0
?
3.0
2.55
?
0.9
?
?
?
?
?
65
120
7.0
?
?
?
?
? 0.5
? 1.0
?
?
?
?
2.7
25
1.7
50
1.0
4.0
130
225
115
205
12
0.7
50
?
?
+1.5
+3.0
+1.0
+3.0
0.25
3.6
2.8
?
2.2
?
5.0
?
200
370
170
300
16
?
?
? C
? C
? C
? C
? C
? C
V
V
mV
V
mV
m A
m A
m A
ms
m A
V
m A
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