NCT475AFCT2G datasheet(4/13 Pages) ONSEMI

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NCT475

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SCL

SDA

STOP START

STOP

START

Figure 3. Serial Interface Timing

tBUF

tSU;STA

tHD;STA

tSU;STO

tSU;DAT

tHD;DAT

tHD;STA

tHIGH

tLOW

ELECTRICAL CHARACTERISTICS (TA = TMIN to TMAX, VDD = 3.0 V to 5.5 V. All specifications for −55°C to +125°C, unless

otherwise noted)

Parameter

Test Conditions

Min

Typ

Max

Unit

TEMPERATURE SENSOR AND ADC

Accuracy at VDD = 3.0 V to 5.5 V

TA = 0°C to +70°C

TA = −25°C to +100°C

TA = −55°C to +125°C

−

±1

±2

±3

°C

ADC Resolution

−

Bits

Temperature Resolution

−

0.0625

−

°C

Temperature Conversion Time

One Shot Mode

−

48.5

−

Update Rate

−

POWER REQUIREMENTS

Supply Voltage

3.0

−

5.5

POR Threhold

2.75

−

Supply Current

Peak current while converting and I2C

interface inactive

−

0.8

Average Current

Average current over 1 conversion

cycle

−

0.44

0.575

Shutdown Mode at 3.3 V

Supply current in shutdown mode

−

OS/ALERT OUTPUT (OPEN DRAIN)

Output Low Voltage, VOL

IOL = 4 mA

−

0.15

0.4

Pin Capacitance

−

High Output Leakage Current, IOH

OS/ALERT pin pulled up to 5.5 V

−

0.1

DIGITAL INPUTS

Input Current

VIN = 0 V to VDD

−

Input Low Voltage, VIL

−

0.3 x

VDD

Input High Voltage, VIH

0.7 x

VDD

−

SCL, SDA Glitch Rejection

Input filtering suppresses noise spikes

of less than 50 ns

−

Pin Capacitance

−

DIGITAL OUTPUT (OPEN DRAIN)

Output High Current, IOH

VOH = 5 V

−

Output Low Voltage, VOL

IOL = 3 mA

−

0.4

Output Capacitance, COUT

−

Product parametric performance is indicated in the Electrical Characteristics for the listed test conditions, unless otherwise noted. Product

performance may not be indicated by the Electrical Characteristics if operated under different conditions.

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