ADT7467ARQZ-R7 datasheet(3/77 Pages) ONSEMI

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ADT7467

Rev. 3 | Page 3 of 77 | www.onsemi.com

SPECIFICATIONS

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

All voltages are measured with respect to GND, unless otherwise specified. Typicals are at TA = 25°C and represent the most likely

parametric norm. Logic inputs accept input high voltages up to VMAX even when the device is operating down to VMIN. Timing

specifications are tested at logic levels of VIL = 0.8 V for a falling edge and VIH = 2.0 V for a rising edge. SMBus timing specifications

are guaranteed by design and are not production tested.

Table 1.

Parameter

Min

Typ

Max

Unit

Test Conditions/Comments

POWER SUPPLY

Supply Voltage

3.0

3.3

5.5

Supply Current, ICC

Interface inactive, ADC active

μA

Standby mode

TEMPERATURE-TO-DIGITAL CONVERTER

Local Sensor Accuracy

±1.5

°C

0°C ≤ TA ≤ 70°C

−3.5

°C

−40°C ≤ TA ≤ +100°C

−4

°C

−40°C ≤ TA ≤ +120°C

Resolution

0.25

°C

Remote Diode Sensor Accuracy

±0.5

±1.5

°C

0°C ≤ TA ≤ 70°C; 0°C ≤ TD ≤ 120°C

−3.5

°C

0°C ≤ TA ≤ 105°C; 0°C ≤ TD ≤ 120°C

−4.5

°C

−40°C ≤ TA ≤ +120°C; 0°C ≤ TD ≤

+120°C

Resolution

0.25

°C

Remote Sensor Source Current

μA

First current

μΑ

Second current

μΑ

Third current

ANALOG-TO-DIGITAL CONVERTER (INCLUDING

MUX AND ATTENUATORS)

Total Unadjusted Error (TUE)

±1.5

Differential Nonlinearity (DNL)

±1

LSB

8 bits

Power Supply Sensitivity

±0.1

%/V

Conversion Time (Voltage Input)

Averaging enabled

Conversion Time (Local Temperature)

Averaging enabled

Conversion Time (Remote Temperature)

Averaging enabled

Total Monitoring Cycle Time

145

Averaging enabled

Averaging disabled

Input Resistance

100

kΩ

For VCC channel

140

200

kΩ

For all channels other than VCC

FAN RPM-TO-DIGITAL CONVERTER

Accuracy

±5

0°C ≤ TA ≤ 70°C, 3.3 V

±7

−40°C ≤ TA ≤ +120°C, 3.3 V

±10

−40°C ≤ TA ≤ +120°C, 5.5 V

Full-Scale Count

65,535

Nominal Input RPM

109

RPM

Fan count = 0xBFFF

329

RPM

Fan count = 0x3FFF

5000

RPM

Fan count = 0x0438

10,000

RPM

Fan count = 0x021C

Internal Clock Frequency

85.5

94.5

kHz

0°C ≤ TA ≤ 70°C, VCC = 3.3 V

83.7

96.3

kHz

−40°C ≤ TA ≤ +120°C, VCC = 3.3 V

kHz

−40°C ≤ TA ≤ +120°C, VCC = 5.5 V

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