ADT7420UCPZ-R2(RevA) View Datasheet(PDF) - Analog Devices

Part Name

Description

Manufacturer

ADT7420UCPZ-R2
(Rev.:RevA)

±0.25°C Accurate, 16-Bit Digital I2C Temperature Sensor

Analog Devices 

Data Sheet

ADT7420

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

Accuracy 1

Min

Typ

0.0017

ADC Resolution

−0.85

−1.0

13

16

Temperature Resolution

13-Bit

16-Bit

Temperature Conversion Time

Fast Temperature Conversion Time

1 SPS Conversion Time

Temperature Hysteresis4

Repeatability 5

Drift 6

DC PSRR

DIGITAL OUTPUTS (CT, INT, SDA—OPEN DRAIN)

High Output Leakage Current, IOH

Output Low Voltage, VOL

Output High Voltage, VOH

Output Capacitance, COUT

DIGITAL INPUTS (SCL, SDA, A0, A1)

Input Current

Input Low Voltage, VIL

Input High Voltage, VIH

SCL, SDA Glitch Rejection

Pin Capacitance

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

0.0625

0.0078

240

6

60

±0.002

±0.015

0.0073

0.1

0.1

0.7 × VDD

2

0.7 × VDD

2

50

2

2.7

210

250

46

65

Max

Unit

±0.20 2

°C

±0.25

°C

±0.31

°C

±0.35

°C

±0.50

°C

±0.50 3

°C

±0.66

°C

°C

°C

Bits

Bits

°C

°C

ms

ms

ms

°C

°C

°C

°C/V

5

µA

0.4

V

V

pF

±1

µA

0.3 × VDD V

0.4

V

V

V

ns

10

pF

5.5

V

265

µA

300

µA

µA

µA

Test Conditions/Comments

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 the

sign bit plus 12 ADC bits (power-up default

resolution)

Twos complement temperature value of the

sign bit plus 15 ADC bits (Bit 7 = 1 in the

configuration register)

13-bit resolution (sign + 12-bit)

16-bit resolution (sign + 15-bit)

Continuous conversion and one-shot

conversion modes

First conversion on power-up only

Conversion time for 1 SPS mode

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

to 25°C

TA = 25°C

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

TA = 25°C

CT and INT pins pulled up to 5.5 V

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

VIN = 0 V to VDD

SCL and SDA only

A0 and A1 only

SCL and SDA only

A0 and A1 only

Input filtering suppresses noise spikes of less

than 50 ns

Peak current while converting, I2C interface

inactive

Peak current while converting, I2C interface

inactive

VDD = 3.3 V, 1 SPS mode, TA = 25°C

VDD = 5.5 V, 1 SPS mode, TA = 25°C

Rev. A | Page 3 of 24

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