TC820

DS21476B-page 4

© 2002 Microchip Technology Inc.

1.0

ELECTRICAL

CHARACTERISTICS

Absolute Maximum Ratings*

Analog Input Voltage:

40-Pin Plastic DIP ......................................... 1.23W

44-Pin PLCC ..................................................1.23W

44-Pin Plastic Flat Package (PQFP) ..............1.00W

Operating Temperature Range:

"C" Devices ......................................... 0°C to +70°C

"E" Devices.......................................-40°C to +85°C

Storage Temperature Range .............. -65°C to +150°C

*Stresses above those listed under "Absolute Maximum

Ratings" may cause permanent damage to the device. These

are stress ratings only and functional operation of the device

at these or any other conditions above those indicated in the

operation sections of the specifications is not implied.

Exposure to Absolute Maximum Rating conditions for

extended periods may affect device reliability.

TC820 ELECTRICAL SPECIFICATIONS

Symbol

Parameter

Min

Typ

Max

Units

Test Conditions

Zero Input Reading

-000

±000

+000

Digital

Reading

Full Scale = 400mV

RE

Rollover Error

-1

±0.2

+1

Counts

Full Scale = 400mV

NL

Nonlinearity

(Maximum Deviation From Best

Straight Line Fit)

-1

±0.2

+1

Count

Full Scale = 400mV

Ratiometric Reading

1999

1999/2000

2000

—

CMRR

Common Mode Rejection Ratio

—

50

—

µV/V

Full Scale = 400mV

VCMR

Common Mode Voltage Range

—

Input High, Input Low

Noise (P-P Value Not

Exceeded 95% of Time)

—15

—

µVV

Full Scale = 400mV

Input Leakage Current

—

—

—

—

—1

10

pA

—20

—

pA

0°C

≤ T

—100

—

pA

-40°C

Analog Common Voltage

3.15

3.3

3.45

V

25k

Ω between Common and

Common Voltage Temperature

Coefficient

——

—

—

25k

Ω Between Common and

—35

50

ppm/°C

0°C

≤ T

—50

—

—

-40°C

Note

1:

Input voltages may exceed the supply voltages provided that input current is limited to ±100

µA. Current above this value

may result in invalid display readings, but will not destroy the device if limited to ±1mA.

2:

Dissipation ratings assume device is mounted with all leads soldered to printed circuit board.