ADM1027ARQZ-REEL datasheet(2/56 Pages) ONSEMI

Part #	ADM1027ARQZ-REEL

Description	dBCOOL??Remote Thermal Controller and Voltage Monitor

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Manufacturer	ONSEMI [ON Semiconductor]

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REV. A

–2–

ADM1027–SPECIFICATIONS

1, 2, 3, 4 (T

A = TMIN to TMAX (0 C to 105 C), VCC = VMIN to VMAX (3 V to 5.5 V),

unless otherwise noted.)

Parameter

Min

Typ

Max

Unit

Test Conditions/Comments

POWER SUPPLY

Supply Voltage

3.0

3.3

5.5

V

Supply Current, ICC

1.4

3

mA

Interface Inactive, ADC Active

TEMP-TO-DIGITAL CONVERTER

Local Sensor Accuracy

± 3

oC

0

oC

TA

105

oC

± 2

oC

0

oC

TA

70

oC

± 1

oC

TA = 40

oC

Resolution

0.25

oC

Remote Diode Sensor Accuracy

± 3

oC

0

oC

TD

120

oC

± 1.5

oC

0

oC

TD

120

oC; 0oC

TA

70

oC

± 1

oC

TA = 40

oC

0

oC

TD

120

oC; T

A = 40

oC

Resolution

0.25

oC

Remote Sensor Source Current

200

mA

High Level

12

mA

Low Level

ANALOG-TO-DIGITAL CONVERTER

(INCLUDING MUX AND ATTENUATORS)

Total Unadjusted Error, TUE

± 0.5

± 1

%

All ADC Inputs except 12 V

± 1.5

%

12 V Input

Differential Nonlinearity, DNL

± 1

LSB

8 Bits

Power Supply Sensitivity

± 0.1

%/V

Conversion Time (Voltage Input)

11.38

12.29

ms

Averaging Enabled

Conversion Time (Local Temperature)

12.09

13.05

ms

Averaging Enabled

Conversion Time (Remote Temperature)

25.59

27.64

ms

Averaging Enabled

Total Monitoring Cycle Time

120.17

129.78

ms

Averaging Enabled

Total Monitoring Cycle Time

13.51

14.59

ms

Averaging Disabled

Input Resistance

80

140

250

k

FAN RPM-TO-DIGITAL CONVERTER

Accuracy

± 6

%

0

oC

TA

70

oC

± 8

%

3.0 V

VCC

3.6 V

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

97.2

kHz

OPEN-DRAIN DIGITAL OUTPUTS,

PWM1–PWM3, XTO

Current Sink, IOL

8.0

mA

Output Low Voltage, VOL

0.4

V

IOUT = –8.0 mA, VCC = 3.3 V

High Level Output Current, IOH

0.1

1

mA

VOUT = VCC

Rev. 3 | Page 2 of 56 | www.onsemi.com

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