ADT7485A

http://onsemi.com

3

Parameter

Test Conditions/Comments

Min

Typ

Max

Unit

Power Supply

3.0

3.3

3.6

V

Undervoltage Lockout Threshold

2.8

V

Continuous conversions

3.8

5.0

mA

Temperature−to−Digital Converter

Local Sensor Accuracy

+1.0

±1.75

±4.0

°C

Remote Sensor Accuracy

+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 ADT7485A cancels 1.5 kW in series with

the remote thermal diode

1.5

kW

Digital Input (ADD)

2.3

V

0.8

V

−1.0

mA

1.0

mA

Pin Capacitance

5.0

pF

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

Total Unadjusted Error (TUE)

12 V and 5.0 V channels

For all other channels

±2.0

±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

145

ms

Input Resistances

5.0 V Channel

12 V Channel

80

95

180

110

120

230

140

150

280

kW

Digital I/O (SST Pin)

1.1

V

0.4

V

Hysteresis (Note 1)

Between input switching levels

150

mV

1.1

1.9

V

1. Guaranteed by design, not production tested.

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