ADM1021AARQZ-R View Datasheet(PDF) - ON Semiconductor
Part Name
Description
Manufacturer
ADM1021AARQZ-R Datasheet PDF : 15 Pages
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PIN ASSIGNMENT
Pin No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
Mnemonic
NC
VDD
D+
D−
NC
ADD1
GND
GND
NC
ADD0
ALERT
SDATA
NC
SCLK
STBY
NC
ADM1021A
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.
ELECTRICAL CHARACTERISTICS (TA = TMIN to TMAX, VDD = 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
Temperature Error, Local Sensor
Guaranteed no missed codes
1.0
°C
−3.0 ±1.0 +3.0
°C
Temperature Error, Remote Sensor
TA = 60°C to 100°C
−3.0
−5.0
+3.0
°C
+5.0
Supply Voltage Range (Note 2)
3.0
3.6
V
Undervoltage Lockout Threshold
Undervoltage Lockout Hysteresis
VDD input, disables ADC, rising edge
2.5
2.7
2.95
V
25
mV
Power−On Reset Threshold
POR Threshold Hysteresis
VDD, falling edge (Note 3)
0.9
1.7
2.2
V
50
mV
Standby Supply Current
VDD = 3.3 V, no SMBus activity
SCLK at 10 kHz
1.0
5.0
mA
4.0
Average Operating Supply Current
0.25 conversions/sec rate
130
200
mA
Auto−convert Mode, Averaged Over 4
Sec
2 conversions/sec rate
225
370
mA
Conversion Time
From stop bit to conversion complete
(both channels) D+ forced to D− + 0.65 V
65
115
170
ms
Remote Sensor Source Current
High level (Note 3)
Low level (Note 3)
120
205
300
mA
7.0
12
16
D− Source Voltage
0.7
V
Address Pin Bias Current (ADD0, ADD1) Momentary at power−on reset
50
mA
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