ADT7470ARQZ Analog Devices Inc, ADT7470ARQZ Datasheet - Page 3

• Manufacturer Part Number: ADT7470ARQZ
• Description: IC SENSOR TEMP FAN CTRLR 16QSOP
• Manufacturer: Analog Devices Inc

Specifications of ADT7470ARQZ

• Function: Fan Control, Temp Monitor
• Topology: ADC, Comparator, Fan Speed Control, Register Bank
• Sensor Type: External
• Sensing Temperature: External Sensor
• Output Type: I²C™
• Output Alarm: No
• Output Fan: Yes
• Voltage - Supply: 3 V ~ 5.5 V
• Operating Temperature: -40°C ~ 125°C
• Mounting Type: Surface Mount
• Package / Case: 16-QSOP
• Ic Output Type: Digital
• Sensing Accuracy Range: ± 12%
• Supply Current: 500µA
• Supply Voltage Range: 3V To 5.5V
• Sensor Case Style: QSOP
• No. Of Pins: 16
• Msl: MSL 3 - 168 Hours
• Termination Type: SMD
• Filter Terminals: SMD
• Rohs Compliant: Yes
• Accuracy %: 12%
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: EVAL-ADT7470EBZ - BOARD EVALUATION FOR ADT7470
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant

SPECIFICATIONS
T
Table 1.
Parameter
POWER SUPPLY
FAN RPM-TO-DIGITAL CONVERTER
OPEN-DRAIN DIGITAL OUTPUTS, PWM1 to 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
1
2
3
4
5
V
All voltages are measured with respect to GND, unless otherwise specified.
Typical values are at %A = 25°C and represent the most likely parametric norm.
Logic inputs accept input high voltages up to 5 V even when the device is operating at supply voltages below 5 V.
Timing specifications are tested at logic levels of V
A
DD
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
= −40
should never be floated in the presence of SCL/SDA activity. Charge injection can be sufficient to induce approximately 0.6 V on V
o
C to +125
1, 2, 3, 4, 5
1
CC
o
CC
C, V
IL
IL
IL
IL
IH
IN
IH
IH
IH
OL
OL
CC
= 3.0 V to 5.5 V, unless otherwise noted.
OH
OH
IL
= 0.8 V for a falling edge and V
Rev. C | Page 3 of 40
Min
3.0
2.4
2.4
V
–5
IH
DD
= 2.0 V for a rising edge.
– 0.3
Typ
3.3
0.5
4
109
329
5,000
10,000
0.1
0.1
500
50
5
Max
5.5
0.8
±12
65,535
0.4
1
0.4
1
0.4
0.8
0.4
5
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
Test Conditions/Comments
Fan count = 0xBFFF
Fan count = 0x3FFF
Fan count = 0x0438
Fan count = 0x021C
I
V
I
V
V
V
OUT
OUT
OUT
OUT
IN
IN
DD.
= V
= 0
= –8.0 mA, V
= –4.0 mA, V
= V
= V
CC
CC
CC
ADT7470
CC
CC
= +3.3 V
= +3.3 V