ADT7488A datasheet(3/12 Pages) ONSEMI

No. de pieza	ADT7488A

Descripción Electrónicos	SST Digital Temperature Sensor and Voltage Monitor

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Fabricante Electrónico	ONSEMI [ON Semiconductor]

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ADT7488A

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

Parameter

Test Conditions/Comments

Min

Typ

Max

Unit

Power Supply

Supply Voltage, VCC

3.0

3.3

3.6

V

Undervoltage Lockout Threshold

2.8

V

Average Operating Supply Current, IDD

Continuous conversions

3.8

5.0

mA

Temperature−to−Digital Converter

Local Sensor Accuracy

40°C ≤ TA ≤ 70°C; VCC = 3.3 V ±5%

−40°C ≤ TA ≤ +100°C

+1.0

±1.75

±4.0

°C

Remote Sensor Accuracy

−40°C ≤ TD ≤ +125°C; TA = 25°C; VCC = 3.3 V

−40°C ≤ TD ≤ +125°C; −40 ≤ TA ≤ 70°C;

VCC = 3.3 V ±5%

−40°C ≤ TD ≤ +125°C; −40 ≤ TA ≤ +100°C

+1.0

±1.0

±1.75

±4.0

°C

Remote Sensor Source Current

Low level

Mid level

High level

12

80

204

mA

Resolution

0.016

°C

Series Resistance Cancellation

The ADT7488A cancels 1.5 kW in series with

the remote thermal diode

1.5

kW

Digital Input (ADD)

Input High Voltage, VIH

2.3

V

Input Low Voltage, VIL

0.8

V

Input High Current, IIH

VIN = VCC

−1.0

mA

Input Low Current, IIL

VIN = 0

1.0

mA

Pin Capacitance

5.0

pF

Analog−to−Digital Converter (Including Multiplexer and Attenuators)

Total Unadjusted Error (TUE)

±1.5

%

Differential Non−linearity (DNL)

10 bits

±1.0

LSB

Power Supply Sensitivity

±0.1

%/V

Conversion Time (Voltage Input)

(Note 1)

Averaging enabled

11

ms

Conversion Time

(Local Temperature) (Note 1)

Averaging enabled

12

ms

Conversion Time

(Remote Temperature) (Note 1)

Averaging enabled

38

ms

Total Monitoring Cycle Time (Note 1)

Averaging enabled

121

ms

Input Resistances

VCCP and 2.5V Channels

80

110

140

kW

Digital I/O (SST Pin)

Input High Voltage , VIH

1.1

V

Input Low Voltage, VIL

0.4

V

Hysteresis (Note 1)

Between input switching levels

150

mV

Output High Voltage, VOH

ISOURCE = 6 mA (maximum)

1.1

1.9

V

High Impedance State Leakage, ILEAK

Device powered on SST bus;

VSST = 1.1 V, VCC = 3.3 V

±1.0

mA

1. Guaranteed by design, not production tested.

2. Minimum and maximum bit times are relative to tBIT defined in the timing negotiation pulse.

3. Device is compatible with hold time specification as driven by SST originator.

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