TC815 datasheet(4/26 Pages) MICROCHIP

No de pièce	TC815

Description	3-1/2 Digit Auto-Ranging A/D Converter with Triplex LCD Drive and Display Hold Function

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Fabricant	MICROCHIP [Microchip Technology]

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TC815

DS21474B-page 4

1.0

ELECTRICAL

CHARACTERISTICS

Absolute Maximum Ratings*

Supply Voltage (V+ to V–) ..................................... 15V

Analog Input Voltage (Either Input) ................ V+ to V-

Reference Input Voltage.................................. V+ to V-

Voltage at Pin 45 ........................................GND ±0.7V

Power Dissipation (TA ≤ 70°C)

64-Pin Plastic Flat Package ...........................1.14W

Operating Temperature Range:

Commercial Package (C) .................... 0°C to +70°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.

TC815 ELECTRICAL SPECIFICATIONS

Electrical Characteristics: VA =9V, TA = +25°C, unless otherwise specified (see Typical Application and Test Circuit Figure).

Symbol

Parameter

Min

Typ

Max

Unit

Test Conditions

Zero Input Reading Input Resistor

-0000

0000

+0000

Digital Reading

200mV Range w/o 10M

Ω Input

-0001

—

+0001

Digital Reading

200mV Range w/10M

Ω Input

-0000

0000

+0000

Digital Reading

20mA and 200mA Range

RE

Rollover Error

—

±1 Count

200mV Range w/o 10M

Ω

Input Resistor

—

±3

200mV Range w/10M

Ω Input

—

±1

20mA and 200mA Range

NL

Linearity Error

—

±1

Count

Best Case Straight Line

IIN

Input Leakage Current

—

10

pA

EN

Input Noise

—

20

—

µVp-p

BW = 0.1 to 10Hz

AC Frequency Error

—

±1

—

%

40Hz to 500Hz

—

±5

—

%

40Hz to 200Hz

Open Circuit Voltage

—

570

660

mV

Excludes 200

Ω Range

for OHM Measurements

Open Circuit Voltage

—

285

350

mV

Excludes 200

Ω Range

for LO OHM Measurement

VCOM

Analog Common Voltage

2.5

2.6

3.3

V

(V+ -VCOM)

VCTC

Common Voltage Temperature

Coefficient

—

50

ppm/°C

Display Multiplex Rate

—

100

—

Hz

VIL

Low Logic Input

—

1

V

20mA,AC,I,LOW

Ω,HOLD

Range, -MEM, OHMs

(Relative to DGND Pin 58)

Logic 1 Pull-up Current

—

25

—

µA20mA,AC,I,LOW

Ω,HOLD

Range, -MEM, OHMs

(Relative to DGND Pin 58)

Buzzer Drive Frequency

—

4

—

kHz

Low Battery Flag Voltage

6.3

6.6

7.0

V

VCC to VSSA

Operating Supply Current

—

0.8

1.5

mA

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