TC820CPL データシートの表示（PDF） - Microchip Technology

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TC820CPL

3-3/4 digit A/D converter with frequency counter and logic probe

Microchip Technology 

TC820

TC820 ELECTRICAL SPECIFICATIONS (CONTINUED)

Electrical Characteristics: VS = 9V, TA = 25°C, unless otherwise specified.

Symbol

Parameter

Min

Typ

Max

Units

Test Conditions

TCZS

Zero Reading Drift

TCFS

Scale Factor Temperature

Coefficient

—

—

—

0.2

—

1

—

—

—

1

—

5

—

—

VIN = 0V

—

—

0°C ≤ TA ≤ +70°C

—

—

-40°C ≤ TA ≤ +85°C

—

—

VIN = 399mV

5

ppm/°C 0°C ≤ TA ≤ +70°C

—

ppm/°C -40°C ≤ TA ≤ +85°C

Ext Ref = 0ppm/°C

IS

Supply Current

—

1

1.5

mA

VIN = 0V

Peak-to-Peak Backplane

Drive Voltage

4.25

4.7

5.3

V

VS = 9V

VDISP = DGND

Buzzer Frequency

—

5

—

kHz FOSC = 40kHz

Counter TIme-Base Period

—

1

—

Second FOSC = 40kHz

Low Battery Flag Voltage

6.7

7

7.3

V

VDD to VSS

VIL

Input Low Voltage

—

—

DGND + 1.5

V

VIH

Input High Voltage

VDD – 1.5

—

—

V

VOL

Output Low Voltage,

UR, OR Outputs

VDD – 1.5

—

DGND + 0.4

V

IL = 50µA

Control Pin Pull-down Current

—

5

—

µA

VIN = VDD

Note 1: Input voltages may exceed the supply voltages provided that input current is limited to ±100µA. 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.

© 2002 Microchip Technology Inc.

DS21476B-page 5

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