ADT7470 Analog Devices, Inc., ADT7470 Datasheet - Page 3

• Manufacturer Part Number: ADT7470
• Description: Temperature Sensor Hub And Fan Controller
• Manufacturer: Analog Devices, Inc.

SPECIFICATIONS
T
Table 1.
Parameter
POWER SUPPLY
FAN RPM-TO-DIGITAL CONVERTER
OPEN-DRAIN DIGITAL OUTPUTS, PWM1–PWM4, SMBALERT
OPEN-DRAIN SERIAL DATA BUS OUTPUT (SDA)
SMBus DIGITAL INPUTS (SCL, SDA)
DIGITAL INPUT LOGIC LEVELS (TACH INPUTS, FULL_SPEED, GPIO)
DIGITAL INPUT LOGIC LEVELS (TMP_IN)
DIGITAL INPUT CURRENT
SERIAL BUS TIMING
A
Supply Voltage
Supply Current, I
Standby Current, I
Accuracy
Full-Scale Count
Nominal Input RPM
Output Low Voltage, V
High Level Output Current, I
Output Low Voltage, V
High Level Output Current, I
Input High Voltage, V
Input Low Voltage, V
Hysteresis
Input High Voltage, V
Input Low Voltage, V
Hysteresis
Input High Voltage, V
Input Low Voltage, V
Input High Current, I
Input Low Current, I
Input Capacitance, C
Clock Frequency, f
Glitch Immunity, t
Bus Free Time, t
Start Setup Time, t
Start Hold Time, t
SCL Low Time, t
SCL High Time, t
SCL, SDA Rise Time, t
= T
MIN
to T
1, , , ,
2 3 4 5
MAX
1
, V
BUF
LOW
HIGH
CC
HD;STA
CC
SW
CC
SCLK
SU;STA
IL
IH
IN
= V
IL
IL
IL
r
IH
IH
IH
OL
OL
MIN
to V
OH
OH
MAX
, unless otherwise noted. T
Rev. B | Page 3 of 40
MIN
Min
3.0
2.4
2.4
V
–5
1.3
600
600
1.3
0.6
= −40
DD
– 0.3
o
C, T
Typ
3.3
0.5
4
109
329
5,000
10,000
0.1
0.1
500
50
5
50
MAX
= +125
Max
5.5
0.8
±12
65,535
0.4
1
0.4
1
0.4
0.8
0.4
5
400
300
o
C.
Unit
V
mA
µA
%
RPM
RPM
RPM
RPM
V
µA
V
µA
V
V
mV
V
V
mV p-p
V
V
µA
µA
pF
kHz
ns
µs
ns
ns
µs
µs
ns
Test Conditions/Comments
Fan count = 0xBFFF
Fan count = 0x3FFF
Fan count = 0x0438
Fan count = 0x021C
I
V
I
V
V
V
See Figure 2
See Figure 2
See Figure 2
See Figure 2
See Figure 2
See Figure 2
See Figure 2
See Figure 2
OUT
OUT
OUT
OUT
IN
IN
= V
= 0
= –8.0 mA, V
= –4.0 mA, V
= V
= V
CC
CC
CC
CC
CC
ADT7470
= +3.3 V
= +3.3 V