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ADT7488A

SST Digital Temperature Sensor and Voltage Monitor

ON Semiconductor 

ADT7488A

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

Parameter

Power Supply

Test Conditions/Comments

Min

Typ

Supply Voltage, VCC

Undervoltage Lockout Threshold

3.0

3.3

2.8

Average Operating Supply Current, IDD Continuous conversions

3.8

Temperature−to−Digital Converter

Local Sensor Accuracy

Remote Sensor Accuracy

Remote Sensor Source Current

40°C ≤ TA ≤ 70°C; VCC = 3.3 V ±5%

−40°C ≤ TA ≤ +100°C

−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

Low level

Mid level

High level

+1.0

+1.0

12

80

204

Resolution

0.016

Series Resistance Cancellation

The ADT7488A cancels 1.5 kW in series with

1.5

the remote thermal diode

Digital Input (ADD)

Input High Voltage, VIH

Input Low Voltage, VIL

Input High Current, IIH

Input Low Current, IIL

Pin Capacitance

VIN = VCC

VIN = 0

2.3

−1.0

5.0

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

Total Unadjusted Error (TUE)

Differential Non−linearity (DNL)

10 bits

Power Supply Sensitivity

±0.1

Conversion Time (Voltage Input)

(Note 1)

Averaging enabled

Conversion Time

(Local Temperature) (Note 1)

Averaging enabled

Conversion Time

(Remote Temperature) (Note 1)

Averaging enabled

Total Monitoring Cycle Time (Note 1)

Averaging enabled

121

Input Resistances

VCCP and 2.5V Channels

Digital I/O (SST Pin)

80

110

Input High Voltage , VIH

Input Low Voltage, VIL

Hysteresis (Note 1)

Between input switching levels

1.1

150

Output High Voltage, VOH

ISOURCE = 6 mA (maximum)

1.1

High Impedance State Leakage, ILEAK

Device powered on SST bus;

VSST = 1.1 V, VCC = 3.3 V

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.

Max Unit

3.6

V

V

5.0

mA

±1.75

°C

±4.0

±1.0

°C

±1.75

±4.0

mA

°C

kW

V

0.8

V

mA

1.0

mA

pF

±1.5

%

±1.0

LSB

%/V

11

ms

12

ms

38

ms

ms

140

kW

V

0.4

V

mV

1.9

V

±1.0

mA

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