MCP960X datasheet(7/57 Pages) MICROCHIP

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DS20005426G-page 7

MCP960X/L0X/RL0X

FIGURE 1-1:

Open and Short-Circuit Detection Configuration.

Alert 1, 2, 3, 4 Outputs, SC Alert and OC Alert Outputs (MCP9601/L01/RL01)

Low-Level Voltage

VOL

——

0.4

IOL= 3 mA

High-Level Voltage

VOH

VDD – 0.5

——

IOH= 3 mA

Operating Voltage and Current

Operating Voltage

VDD

2.7

—

5.5

I2C Inactive Current

IDD

—0.3

0.5

VDD = 3.3V,

TA = +85°C

I2C Active Current or During tCALC

—1.5

2.5

Shutdown Current

ISHDN

—2

µA

I2C inactive,

TA = +85°C

Power-on Reset (POR) Thresholds

VPOR

1.0

2.1

2.6

Rising/Falling VDD

Power-up Time

tPOR

—20

—

Thermal Response

Package Thermal Response

(Time to 63% of Final Temperature)

tRSP

—

+25°C (air) to +125°C

(oil bath), 2x2” PCB

DC CHARACTERISTICS (CONTINUED)

Electrical Specifications: Unless otherwise indicated, VDD = 2.7V to 5.5V, GND = Ground, TA = -40°C to +125°C

(where: TA =TC, defined as Device Ambient Temperature).

Parameters

Sym.

Min.

Typ.

Max.

Unit

Conditions

Note 1:

The TC and T summation is implemented in milli-volt (mV) domain. The result, TH (mV), is converted to

Degree Celsius using the NIST ITS-90 Conversion database.

The T_ACY temperature accuracy specification is defined as the device accuracy to the NIST ITS-90

Thermocouple EMF to Degree Celsius Conversion Database with TC = 0°C.

The device measures temperature below the specified range, however, the sensitivity to changes in

temperature reduces exponentially. Type R and S measure down to -50°C, or -0.226 mVEMF and

-0.235 mVEMF, respectively. Type B measures down to 500°C or 1.242 mVEMF (see

Figures 2-7, 2-8, 2-10, 2-11, 2-14 and 2-17).

Exceeding the VIN_CM input range may cause leakage current through the ESD protection diodes at the

thermocouple input pins. This parameter is characterized but not production tested.

The Minimum and Maximum %VDD thresholds are characterized but not production tested.

Del Sig

VIN+

VIN-

MCP9601/L01/RL01

Thermocouple

VDD

VSENSE

10%

20%

30%

40%

50%

60%

70%

80%

90%

100%

SENSE (V)

Range for Thermocouple Short-to-V

DD Detection

Range for Thermocouple Short-to-GND Detection

Dead Zone

Range for Thermocouple Open Circuit Detection

Range for Normal Operation

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