ADT7475 查看數據表（PDF） - Analog Devices

零件编号

产品描述 (功能)

生产厂家

ADT7475

dBCool® Remote Thermal Monitor and Fan Controller

Analog Devices 

ADT7475

SPECIFICATIONS

TA = TMIN to TMAX, VCC = VMIN to VMAX, unless otherwise noted.1

Table 1.

Parameter

POWER SUPPLY

Supply Voltage

Supply Current, ICC

TEMPERATURE-TO-DIGITAL CONVERTER

Local Sensor Accuracy

Min

Typ

3.0

3.3

1.5

±0.5

Resolution

0.25

Remote Diode Sensor Accuracy

±0.5

Resolution

Remote Sensor Source Current

ANALOG-TO-DIGITAL CONVERTER

(INCLUDING MUX AND ATTENUATORS)

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

0.25

180

11

±0.1

11

12

38

145

19

70

120

Full-Scale Count

Nominal Input RPM

OPEN-DRAIN DIGITAL OUTPUTS

(PWM1 TO PWM3, XTO)

Current Sink, IOL

Output Low Voltage, VOL

High Level Output Current, IOH

OPEN-DRAIN SERIAL DATA BUS OUTPUT (SDA)

Output Low Voltage, VOL

High Level Output Current, IOH

SMBus DIGITAL INPUTS (SCL, SDA)

Input High Voltage, VIH

2.0

Input Low Voltage, VIL

Hysteresis

109

329

5000

10,000

0.1

0.1

500

Max

3.6

3

1.5

±2.5

1.5

±2.5

±1.5

±1

±6

±10

65,535

8.0

0.4

20

0.4

1.0

0.4

Unit Test Conditions/Comments

V

mA Interface inactive, ADC active

°C

0°C ≤ TA ≤ 85°C

°C

−40°C ≤ TA ≤ +125°C

°C

°C

0°C ≤ TA ≤ 85°C

°C

−40°C ≤ TA ≤ +125°C

°C

µA High Level

µΑ Low Level

%

LSB 8 bits

%/V

ms Averaging enabled

ms Averaging enabled

ms Averaging enabled

ms Averaging enabled

ms Averaging disabled

kΩ

For VCCP channel

%

0°C ≤ TA ≤ 70°C

%

−40°C ≤ TA ≤ +120°C

RPM Fan count = 0xBFFF

RPM Fan count = 0x3FFF

RPM Fan count = 0x0438

RPM Fan count = 0x021C

mA

V

IOUT = −8.0 mA

µA

VOUT = VCC

V

IOUT = −4.0 mA

µA

VOUT = VCC

V

V

mV

Rev. A | Page 3 of 68

Share Link: