ADT7310 datasheet(3/24 Pages) AD

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ADT7310

Rev. 0 | Page 3 of 24

SPECIFICATIONS

TA = −55°C to +150°C; VDD = 2.7 V to 5.5 V; unless otherwise noted.

Table 1.

Parameter

Min

Typ

Max

Unit

Test Conditions/Comments

TEMPERATURE SENSOR AND ADC

Accuracy1

±0.5

°C

TA = −40°C to +105°C, VDD = 2.7 V to 3.6 V

±0.7

°C

TA = −55°C to +150°C, VDD = 2.7 V to 3.6 V

±0.8

°C

TA = −40°C to +105°C, VDD = 4.5 V to 5.5 V

±1.0

°C

TA = −55°C to +150°C, VDD = 2.7 V to 5.5 V

ADC Resolution

Bits

Twos complement temperature value of sign bit plus 12 ADC bits

(power-up default resolution)

Bits

Twos complement temperature value of sign bit plus 15 ADC bits

(Bit 7 = 1 in the configuration register)

Temperature Resolution

13 Bit

0.0625

°C

13-bit resolution (sign + 12-bit)

16 Bit

0.0078

°C

16-bit resolution (sign + 15-bit)

Temperature Conversion Time

240

Continuous conversion and one-shot conversion mode

Fast Temperature Conversion

Time

First conversion on power-up only

1 SPS Conversion Time

Conversion time for 1 SPS mode

Temperature Hysteresis

0.02

°C

Temperature cycle = 25°C to 125°C, and back to 25°C

Repeatability

0.01

°C

TA = 25°C

DC PSRR

0.1

°C/V

TA = 25°C

DIGITAL OUTPUTS (OPEN DRAIN)

High Output Leakage Current, IOH

0.1

μA

CT and INT pins pulled up to 5.5 V

Output High Current

VOH = 5 .5V

Output Low Voltage, VOL

0.4

IOL = 2 mA @ 5.5 V, IOL = 1 mA @ 3.3 V

Output High Voltage, VOH

0.7 × VDD

Output Capacitance, COUT

DIGITAL INPUTS

Input Current

±1

μA

VIN = 0 V to VDD

Input Low Voltage, VIL

0.4

Input High Voltage, VIH

0.7 × VDD

Pin Capacitance

DIGITAL OUTPUT (DOUT)

Output High Voltage, VOH

VOH − 0.3

ISOURCE = ISINK = 200 μA

Output Low Voltage, VOL

0.4

IOL = 200 μA

Output Capacitance, COUT

POWER REQUIREMENTS

Supply Voltage

2.7

5.5

Supply Current

At 3.3 V

210

250

μA

Peak current while converting, SPI interface inactive

At 5.5 V

230

300

μA

Peak current while converting, SPI interface inactive

1 SPS Current

At 3.3V

μA

VDD = 3.3 V, 1 SPS mode, TA = 25°C

At 5.5V

μA

VDD = 5.5 V, 1 SPS mode, TA = 25°C

Shutdown Current

At 3.3 V

2.0

μA

Supply current in shutdown mode

At 5.5 V

4.4

μA

Supply current in shutdown mode

Power Dissipation Normal Mode

700

μW

VDD = 3.3 V, normal mode at 25°C

Power Dissipation 1 SPS

150

μW

Power dissipated for VDD = 3.3 V, TA = 25°C

1 Accuracy includes lifetime drift.

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