ADT7320 查看數據表（PDF） - Analog Devices

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ADT7320

±0.25°C Accurate, 16-Bit Digital SPI Temperature Sensor

Analog Devices 

Data Sheet

ADT7320

SPECIFICATIONS

TA = −40°C to +125°C, VDD = 2.7 V to 5.5 V, unless otherwise noted.

Table 1.

Parameter

TEMPERATURE SENSOR AND ADC

Accuracy1

ADC Resolution

Temperature Resolution

13-Bit

16-Bit

Temperature Conversion Time

Fast Temperature Conversion Time

1 SPS Conversion Time

Temperature Hysteresis4

Repeatability5

Drift6

DC PSRR

DIGITAL OUTPUTS (CT, INT), OPEN DRAIN

High Output Leakage Current, IOH

Output Low Voltage, VOL

Output High Voltage, VOH

Output Capacitance, COUT

DIGITAL INPUTS (DIN, SCLK, CS)

Input Current

Input Low Voltage, VIL

Input High Voltage, VIH

Pin Capacitance

DIGITAL OUTPUT (DOUT)

Output High Voltage, VOH

Output Low Voltage, VOL

Output Capacitance, COUT

POWER REQUIREMENTS

Supply Voltage

Supply Current

At 3.3 V

At 5.5 V

1 SPS Current

At 3.3 V

At 5.5 V

Min

Typ

Max Unit Test Conditions/Comments

0.0017 ±0.202 °C

±0.25 °C

±0.31 °C

±0.35 °C

±0.50 °C

±0.503 °C

±0.66 °C

−0.85

°C

−1.0

°C

13

Bits

16

Bits

TA = −10°C to +85°C, VDD = 3.0 V

TA = −20°C to +105°C, VDD = 2.7 V to 3.3 V

TA = −40°C to +105°C, VDD = 3.0 V

TA = −40°C to +105°C, VDD = 2.7 V to 3.3 V

TA = −40°C to +125°C, VDD = 2.7 V to 3.3 V

TA = −10°C to +105°C, VDD = 4.5 V to 5.5 V

TA = −40°C to +125°C, VDD = 4.5 V to 5.5 V

TA = +150°C, VDD = 4.5 V to 5.5 V

TA = +150°C, VDD = 2.7 V to 3.3 V

Twos complement temperature value of sign bit plus

12 ADC bits (power-up default resolution)

Twos complement temperature value of sign bit plus

15 ADC bits (Bit 7 = 1 in the configuration register)

0.0625

0.0078

240

6

60

±0.002

±0.015

0.0073

0.1

°C 13-bit resolution (sign + 12 bits)

°C 16-bit resolution (sign + 15 bits)

ms Continuous conversion and one-shot conversion mode

ms First conversion on power-up only

ms Conversion time for 1 SPS mode

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

°C TA = 25°C

°C 500 hour stress test at 150°C with VDD = 5.0 V

°C/V TA = 25°C

0.1

5

µA CT and INT pins pulled up to 5.5 V

0.4

V

IOL = 3 mA at 5.5 V, IOL = 1 mA at 3.3 V

0.7 × VDD

V

2

pF

0.7 × VDD

5

±1

µA VIN = 0 V to VDD

0.4

V

V

10

pF

VDD − 0.3

V

ISOURCE = ISINK = 200 µA

0.4

V

IOL = 200 µA

50

pF

2.7

5.5

V

Peak current while converting, SPI interface inactive

210

265 µA

250

300 µA

1 SPS mode, TA = 25°C

46

µA VDD = 3.3 V

65

µA VDD = 5.5 V

Rev. 0 | Page 3 of 24

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