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SPECIFICATIONS
T
= T
to T
, V
= V
A
MIN
MAX
CC
MIN
All voltages are measured with respect to GND, unless otherwise specified. Typicals are at T
norm. Logic inputs accept input high voltages up to V
logic levels of V
= 0.8 V for a falling edge and V
IL
guaranteed by design and are not production tested.
Table 1.
Parameter
POWER SUPPLY
Supply Voltage
Supply Current, I
CC
TEMP-TO-DIGITAL CONVERTER
Local Sensor Accuracy
Resolution
Remote Diode Sensor Accuracy
Resolution
Remote Sensor Source Current
ANALOG-TO-DIGITAL CONVERTER
(INCLUDING MUX AND ATTENTUATORS)
Total Unadjusted Error (TUE)
Differential Nonlinearity (DNL)
Power Supply Sensitivity
Conversion Time (Voltage Input)
Conversion Time (Local Temperature)
Conversion Time (Remote Temperature)
Total Monitoring Cycle Time
Input Resistance
FAN RPM-TO-DIGITAL CONVERTER
Accuracy
Full-Scale Count
Nominal Input RPM
OPEN-DRAIN DIGITAL OUTPUTS,
PWM1 TO PWM3, XTO
Current Sink, I
OL
Output Low Voltage, V
OL
High Level Output Current, I
OPEN-DRAIN SERIAL DATA BUS OUTPUT (SDA)
Output Low Voltage, V
OL
High Level Output Current, I
SMBus DIGITAL INPUTS (SCL, SDA)
Input High Voltage, V
IH
Input Low Voltage, V
IL
Hysteresis
to V
, unless otherwise specified.
MAX
, even when device is operating down to V
MAX
= 2.0 V for a rising edge. Serial management bus (SMBus) timing specifications are
IH
Min
3.0
90
OH
OH
2.0
Typ
Max
Unit
3.3
3.6
V
1.5
3
mA
±0.5
±1.5
°C
±2.5
°C
0.25
°C
±0.5
±1.5
°C
±2.5
°C
0.25
°C
6
μA
36
μA
96
μΑ
±1.5
%
±1
LSB
±0.1
%/V
11
ms
12
ms
38
ms
145
ms
19
ms
120
kΩ
±6
%
±10
%
65,535
109
RPM
329
RPM
5,000
RPM
10,000
RPM
8.0
mA
0.4
V
0.1
20
μA
0.4
V
0.1
1.0
μA
V
0.4
V
500
mV
Rev. 0 | Page 3 of 76
= 25°C and represent most likely parametric
A
. Timing specifications are tested at
MIN
Test Conditions/Comments
Interface inactive, ADC active
0°C ≤ T
≤ 85°C
A
−40°C ≤ T
≤ 125°C
A
0°C ≤ T
≤ 85°C
A
−40°C ≤ T
≤ 125°C
A
First current
Second current
Third current
8 bits
Averaging enabled
Averaging enabled
Averaging enabled
Averaging enabled
Averaging disabled
For V
channel
CCP
0°C ≤ T
≤ 70°C
A
−40°C ≤ T
≤ +120°C
A
Fan count = 0xBFFF
Fan count = 0x3FFF
Fan count = 0x0438
Fan count = 0x021C
I
= −8.0 mA
OUT
V
= V
OUT
CC
I
= −4.0 mA
OUT
V
= V
OUT
CC
ADT7473
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