ADM1021A
http://onsemi.com
3
Table 2. ABSOLUTE MAXIMUM RATINGS
Parameter Rating Unit
Positive Supply Voltage (V
DD
) to GND −0.3 to +6.0 V
D+, ADD0, ADD1 −0.3 to V
DD
+ 0.3 V
D− to GND −0.3 to +0.6
SCLK, SDATA, ALERT, STBY −0.3 to +6.0 V
Input Current 50 mA
Input Current, D− 1 mA
ESD Rating, All Pins (Human Body Model) 2,000 V
Continuous Power Dissipation
Up to 70C
Derating Above 70C
650
6.7
mW
mW/C
Operating Temperature Range −55 to +125 C
Maximum Junction Temperature (T
J
MAX
) 150 C
Storage Temperature Range −65 to +150 C
Lead Temperature, Soldering (10 sec) 300 C
IR Reflow Peak Temperature 220 C
Stresses exceeding Maximum Ratings may damage the device. Maximum Ratings are stress ratings only. Functional operation above the
Recommended Operating Conditions is not implied. Extended exposure to stresses above the Recommended Operating Conditions may affect
device reliability.
NOTE: This device is ESD sensitive. Use standard ESD precautions when handling.
Table 3. THERMAL CHARACTERISTICS
Package Type
q
JA
Unit
16-lead QSOP Package 105 C/W
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
Guaranteed No Missed Codes 1.0 − − C
Temperature Error, Local Sensor −3.0 1.0 +3.0 C
Temperature Error, Remote Sensor T
A
= 60C to 100C −3.0
−5.0
−
−
+3.0
+5.0
C
Supply Voltage Range (Note 2) 3.0 − 3.6 V
Undervoltage Lockout Threshold V
DD
Input, Disables ADC, Rising Edge 2.5 2.7 2.95 V
Undervoltage Lockout Hysteresis − 25 − mV
Power-On Reset Threshold V
DD
, falling edge (Note 3) 0.9 1.7 2.2 V
POR Threshold Hysteresis − 50 − mV
Standby Supply Current V
DD
= 3.3 V, No SMBus Activity
SCLK at 10 kHz
−
−
1.0
4.0
5.0
−
mA
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
7.0
205
12
300
16
mA
D− Source Voltage − 0.7 − V
Address Pin Bias Current (ADD0, ADD1) Momentary at Power-on Reset − 50 −
mA
