ADT7488A
http://onsemi.com
3
Table 4. ELECTRICAL CHARACTERISTICS  
(T
A
 = T
MIN
 to T
MAX
, V
CC
 = V
MIN
 to V
MAX
, unless otherwise noted)
Parameter
Test Conditions/Comments
Min
Typ
Max
Unit
Power Supply
Supply Voltage, V
CC
3.0
3.3
3.6
V
Undervoltage Lockout Threshold

2.8

V
Average Operating Supply
Current, I
DD
Continuous Conversions

3.8
5.0
mA
Temperature-to-Digital Converter
Local Sensor Accuracy
40癈 ?T
A
?70癈; V
CC
= 3.3 V ?%
40癈 ?T
A
?+100癈


+1.0

?.75
?.0
Remote Sensor Accuracy
40癈 ?T
D
?+125癈; T
A
= 25癈; V
CC
= 3.3 V
40癈 ?T
D
?+125癈; 40 ?T
A
?70癈;
V
CC
= 3.3 V ?%
40癈 ?T
D
?+125癈; 40 ?T
A
?+100癈




+1.0

?.0
?.75
?.0
Remote Sensor Source Current
Low Level
Mid Level
High Level



12
80
204



mA
Resolution

0.016

Series Resistance Cancellation
The ADT7488A Cancels 1.5 kW in Series
with the Remote Thermal Diode

1.5

kW
Digital Input (ADD)
Input High Voltage, V
IH
2.3


V
Input Low Voltage, V
IL


0.8
V
Input High Current, I
IH
V
IN
= V
CC
1.0


mA
Input Low Current, I
IL
V
IN
= 0


1.0
mA
Pin Capacitance

5.0

pF
Analog-to-Digital Converter (Including Multiplexer and Attenuators)
Total Unadjusted Error (TUE)


?.5
%
Differential Non-linearity (DNL)
10 Bits


?.0
LSB
Power Supply Sensitivity

?.1

%/V
Conversion Time
(Voltage Input) (Note 1)
Averaging Enabled


11
ms
Conversion Time
(Local Temperature) (Note 1)
Averaging Enabled


12
ms
Conversion Time
(Remote Temperature) (Note 1)
Averaging Enabled


38
ms
Total Monitoring Cycle Time
(Note 1)
Averaging Enabled

121

ms
Input Resistances
V
CCP
 and 2.5 V Channels
80
110
140
kW
Digital I/O (SST Pin)
Input High Voltage , V
IH
1.1


V
Input Low Voltage, V
IL


0.4
V
Hysteresis (Note 1)
Between Input Switching Levels

150

mV
Output High Voltage, V
OH
I
SOURCE
= 6 mA (Maximum)
1.1

1.9
V
High Impedance State Leakage,
I
LEAK
Device Powered On SST Bus;
V
SST
= 1.1 V, V
CC
= 3.3 V


?.0
mA
High Impedance State Leakage,
I
LEAK
Device Non-powered On SST Bus;
V
SST
 = 1.1 V, V
CC
= 0 V


?0
mA
Signal Noise Immunity, V
NOISE
Noise Glitches from 10 MHz to 100 MHz;
Width Up to 50 ns
300


mV
p-p
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