TC835

DS21478B-page 4

© 2002 Microchip Technology Inc.

1.0

ELECTRICAL

CHARACTERISTICS

Absolute Maximum Ratings*

Positive Supply Voltage ......................................... +6V

Negative Supply Voltage ........................................ -9V

Analog Input Voltage (Pin 9 or 10) ... V+ to V– (Note 2)

Reference Input Voltage (Pin 2) ..................... V+ to V–

Operating Temperature Range................0°C to +70°C

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

28-Pin Plastic DIP ............................ 1.14

Ω

44-Pin PQFP .................................... 1.00

Ω

64-Pin PQFP .................................... 1.14

Ω

*Stresses above those listed under "Absolute Maximum Rat-

ings" 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. Expo-

sure to Absolute Maximum Rating conditions for extended

periods may affect device reliability.

TC835 ELECTRICAL SPECIFICATIONS

Symbol

Parameter

Min

Typ

Max

Unit

Test Conditions

Analog

Display Reading with Zero Volt Input

-0.0000

±0.0000 +0.0000

Display Reading

Note 3, Note 4

Zero Reading Temperature Coefficient

—

0.5

2

µV/°C

Full-Scale Temperature Coefficient

—

—

5

ppm/°C

(Note 5, Note 6

NL

Nonlinearity Error

—

0.5

1

Count

Note 7

DNL

Differential Linearity Error

—

0.01

—

LSB

Note 7

Display Reading in Ratiometric Operation

+0.9996

+0.9998 +1.0000

Display Reading

±FSE

± Full Scale Symmetry Error (Rollover Error)

—

0.5

1

Count

Input Leakage Current

—

1

10

pA

Note 4

Noise

—

15

—

Peak to Peak Value not

Exceeded 95% of Time

Digital

Input Low Current

—

10

100

Input High Current

—

0.08

10

Output Low Voltage

—

0.2

0.4

V

Output High Voltage;

Busy, Polarity, Overrange,

Underrange, Strobe

2.4

4.4

5

V

4.9

4.99

5

V

Clock Frequency

0

200

1200

kHz

Note 10

Note

1:

Functional operation is not implied.

2:

Limit input current to under 100 µA if input voltages exceed supply voltage.

3:

Full scale voltage = 2V.

4:

5:

0°C

6:

External reference temperature coefficient less than 0.01ppm/°C.

7:

-2V

8:

9:

Test circuit shown in Figure 1-1.

10: Specification related to clock frequency range over which the TC835 correctly performs its various functions. Increased

errors result at higher operating frequencies.