© 2002 Microchip Technology Inc.

DS21477B-page 3

TC826

1.0

ELECTRICAL

CHARACTERISTICS

Absolute Maximum Ratings*

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

Analog Input Voltage (Either Input) (Note 1)... V+ to V-

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.

TC826 ELECTRICAL SPECIFICATIONS

Note

1: Input voltages may exceed the supply voltages when the input current is limited to 100

µA.

2: Static sensitive device. Unused devices should be stored in conductive material to protect devices from static discharge

and static fields.

3: Backplane drive is in phase with segment drive for ‘off’ segment and 180°C out of phase for ‘on’ segment. Frequency is

10 times conversion rate.

4: Logic input pins 58, 59, and 60 should be connected through 1M

Ω series resistors to V

Symbol

Parameter

Min

Typ

Max

Unit

Test Conditions

Zero Input

-0

±0

+0

Display

Zero Reading Drift

—

0.2

1

µV/°C

0°C

NL

Linearity Error

-1

0.5

+1

Count

Max Deviation from Best Straight Line

R/O

Rollover Error

-1

0

+1

Count

EN

Noise

—

60

—

ILK

Input Leakage Current

—

10

20

pA

CMRR

Common Mode Rejection Ratio

—

50

—

µV/V

VCM = ±1V

Scale Factor Temperature Coefficient

—

1

—

ppm/°C

0

≤ T

External Ref. Temperature

Coefficient = 0ppm/°C

Analog Common Temperature

Coefficient

—

35

100

ppm/°C

250k

Ω between Common and

V+, 0°C

≤ T

Analog Common Voltage

2.7

2.9

3.35

V

250k

VSD

LCD Segment Drive Voltage

4

5

6

VBD

LCD Backplane Drive Voltage

4

5

6

Power Supply Current

—

125

175

µA