ADT7485AARMZ-REEL View Datasheet(PDF) - Analog Devices

Part Name

Description

Manufacturer

ADT7485AARMZ-REEL

SST Digital Temperature Sensor and Voltage Monitor

Analog Devices 

SPECIFICATIONS

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

Table 1.

Parameter

Min

Typ

POWER SUPPLY

Supply Voltage, VCC

3.0

3.3

Undervoltage Lockout Threshold

2.8

Average Operating Supply Current, IDD

3.8

TEMPERATURE-TO-DIGITAL CONVERTER

Local Sensor Accuracy

+1

Remote Sensor Accuracy

+1

Remote Sensor Source Current

Resolution

Series Resistance Cancellation

DIGITAL INPUT (ADD)

Input High Voltage, VIH

2.3

Input Low Voltage, VIL

Input High Current, IIH

−1

Input Low Current, IIL

Pin Capacitance

ANALOG-TO-DIGITAL CONVERTER

(Including Multiplexer and Attenuators)

Total Unadjusted Error (TUE)

Differential Nonlinearity (DNL)

Power Supply Sensitivity

Conversion Time (Voltage Input)1

Conversion Time (Local Temperature)1

Conversion Time (Remote Temperature)1

Total Monitoring Cycle Time1

Input Resistances

VCCP and 2.5V Channels

80

5V Channel

230

12V Channel

180

DIGITAL I/O (SST Pin)

Input High Voltage , VIH

1.1

Input Low Voltage, VIL

Hysteresis1

Output High Voltage, VOH

1.1

High Impedance State Leakage, ILEAK

High Impedance State Leakage, ILEAK

Signal Noise Immunity, VNOISE

300

12

80

204

0.016

1.5

5

±0.1

145

110

290

230

150

Max

3.6

5

±1.75

±4

±1

±1.75

±4

0.8

1

±2

±1.5

±1

11

12

38

140

350

280

0.4

1.9

±1

±10

Rev. 0 | Page 3 of 16

ADT7485A

Unit

Test Conditions/Comments

V

V

mA

Continuous conversions

°C

40°C ≤ TA ≤ 70°C; VCC = 3.3 V ±5%

°C

−40°C ≤ TA ≤ +100°C

°C

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

°C

−40°C ≤ TD ≤ +125°C; −40 ≤ TA ≤ 70°C;

VCC = 3.3 V ±5%

°C

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

μA

Low level

μA

Mid level

μA

High level

°C

kΩ

The ADT7485A cancels 1.5 kΩ in series

with the remote thermal diode

V

V

μA

VIN = VCC

μA

VIN = 0

pF

%

12V and 5V channels

%

For all other channels

LSB

10 bits

%/V

ms

Averaging enabled

ms

Averaging enabled

ms

Averaging enabled

ms

Averaging enabled

kΩ

kΩ

kΩ

V

V

mV

V

μA

μA

mV p-p

Between input switching levels

ISOURCE = 6 mA (maximum)

Device powered on SST bus;

VSST = 1.1 V, VCC = 3.3 V

Device unpowered on SST bus;

VSST = 1.1 V, VCC = 0 V

Noise glitches from 10 MHz to 100 MHz;

width up to 50 ns

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