ADT7463ARQZ-R7 datasheet(2/52 Pages) ONSEMI

2 / 52 page

REV. C

–2–

ADT7463–SPECIFICATIONS1, 2, 3, 4 (T

A = TMIN to TMAX, VCC = VMIN to VMAX, unless otherwise noted.)

Parameter

Min

Typ

Max

Unit

Test Conditions/Comments

POWER SUPPLY

Supply Voltage

3.0

5.0

5.5

Supply Current, ICC

3mA

Interface Inactive, ADC Active

µA

Standby Mode

TEMPERATURE-TO-DIGITAL CONVERTER

Local Sensor Accuracy

±0.5

±1.5

�

C0�C � TA � 70�C

±3

�

–40�C � TA � +120�C

Resolution

0.25

�

Remote Diode Sensor Accuracy

±0.5

±1.5

�

0�C � TA � 70�C; 0�C � TD � 120�C

±2.5

�

0�C � TA � 105�C; 0�C � TD � 120�C

±3

�

0�C � TA � 120�C; 0�C � TD � 120�C

Resolution

0.25

�

Remote Sensor Source Current

180

µAHigh Level

µALow Level

ANALOG-TO-DIGITAL CONVERTER

(INCLUDING MUX AND ATTENUATORS)

Total Unadjusted Error, TUE

±1.5

Differential Nonlinearity, DNL

±1

LSB

Power Supply Sensitivity

±0.1

%/V

Conversion Time (Voltage Input)

11.38

Averaging Enabled

Conversion Time (Local Temperature)

12.09

13.50

Averaging Enabled

Conversion Time (Remote Temperature)

25.59

Averaging Enabled

Total Monitoring Cycle Time

120.17

134.50

Averaging Enabled

Total Monitoring Cycle Time

13.51

Averaging Disabled

Input Resistance

100

140

200

Ω

FAN RPM-TO-DIGITAL CONVERTER

Accuracy

±7

%0�C � TA � 70�C

±11

0�C � TA � 105�C

±13

–40�C � TA � +120�C

Full-Scale Count

65,535

Nominal Input RPM

109

RPM

Fan Count = 0xBFFF

329

RPM

Fan Count = 0x3FFF

5,000

RPM

Fan Count = 0x0438

10,000

RPM

Fan Count = 0x021C

Internal Clock Frequency

82.8

90.0

97.2

kHz

OPEN-DRAIN DIGITAL OUTPUTS,

PWM1 to PWM3, XTO

Current Sink, IOL

8.0

Output Low Voltage, VOL

0.4

IOUT = –8.0 mA, VCC = 3.3 V

High Level Output Current, IOH

0.1

µAVOUT = VCC

OPEN-DRAIN SERIAL DATA

BUS OUTPUT (SDA)

Output Low Voltage, VOL

0.4

IOUT = –4.0 mA, VCC = 3.3 V

High Level Output Current, IOH

0.1

µAVOUT = VCC

SMBUS DIGITAL INPUTS

(SCL, SDA)

Input High Voltage, VIH

2.0

Input Low Voltage, VIL

0.4

Hysteresis

500

DIGITAL INPUT LOGIC LEVELS

(VID0 to VID5)

Input High Voltage, VIH

1.7

Bit 6 (THLD) Reg. 0x43 = 0

Input Low Voltage, VIL

0.8

(VID Threshold = 1 V)

Input High Voltage, VIH

0.8

Bit 6 (THLD) Reg. 0x43 = 1

Input Low Voltage, VIL

0.4

(VID Threshold = 0.6 V)

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