MCP960X datasheet(6/57 Pages) MICROCHIP

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DS20005426G-page 6

MCP960X/L0X/RL0X

Sensor Characteristics

TC and TH Temperature Resolution

TRES

—

±0.0625

—

°C

With max. resolution

Sampling Rate (TA =+25°C)

tCONV

—

320

—

18-bit resolution

—

16-bit resolution

—

14-bit resolution

—

12-bit resolution

Temperature Calculation Time

tCALC

—12

—

TA =+25°C

Thermocouple Input

Offset Error

VOERR

—±2

—

µV

Offset Error Drift

VOE_DR

—50

—

nV/°C

Full-Scale Gain Error — MCP9600/01

GERR

——

±0.04

%FS

TA = 0°C to +85°C

Full-Scale Gain Error — MCP96L00/L01

—

±0.12

—

TA = -40°C to +125°C

Full-Scale Gain Error —MCP96RL00/RL01

—

±0.24

—

Full-Scale Gain Error Drift

GER_DR

—±0.01

—

%FS

Full-Scale Integral Nonlinearity

INL

—

ppm

Voltage Resolution

VRES

—

µV

18-bit resolution

Differential Mode Range

VIN_DF

-250

—

+250

ADC input range

Differential Mode Impedance

ZIN_DF

—

300

—



Common-Mode Range

VIN_CM VDD – 0.3

—

VDD + 0.3

Note 4

Common-Mode Impedance

ZIN_CM

—25

—



Common-Mode Rejection Ratio

CMRR

—

105

—

Power Supply Rejection Ratio

PSRR

—

Line Regulation

VLine_R

—0.2

—

°C/V

Voltage Sense Input (VSENSE) for Thermocouple Open and Short-Circuit Detection (MCP9601/L01/RL01)

VSENSE Input Range (Note 5)

VSiRNG

0—

100

%VDD

(see Figure 1-1)

- Short Circuit to VDD

VSiSC

—

100

SC Alert Asserts

- Short Circuit to GND

—

- Open-Circuit

VSiOC

—

OC Alert Asserts

- Normal Operation

VSiNOR

—

OC Alert Deasserts

VSENSE Input Leakage

ISiLEAK

—0.1

µA

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.

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