TC7116/A/TC7117/A

DS21457B-page 4

© 2002 Microchip Technology Inc.

1.0

ELECTRICAL

CHARACTERISTICS

Absolute Maximum Ratings*

Supply Voltage:

TC7116/TC7116A (V+ to V-) ........................... 15V

TC7117/TC7117A (V+ to GND) .......................+6V

V- to GND.........................................................-9V

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

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

Clock Input:

TC7116/TC7116A............................... TEST to V+

TC7117/TC7117A.................................GND to V+

40-Pin CDIP ................................................2.29W

40-Pin PDIP ................................................1.23W

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

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

Operating Temperature:

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

I (Commercial) Device.................... 0°C to +70°C

Storage Temperature.......................... -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.

TC7116/A AND TC7117/A ELECTRICAL SPECIFICATIONS

Symbol

Parameter

Min

Typ

Max

Unit

Test Conditions

Zero Input Reading

—

±0

—

Digital

Reading

Full Scale = 200mV

Ratiometric Reading

999

999/1000

1000

Digital

Reading

R/O

Rollover Error (Difference in Reading for

Equal Positive and Negative

Readings Near Full Scale)

-1

±0.2

+1

Counts

or

≈ 2V

Linearity (Maximum Deviation from Best

Straight Line Fit)

-1

±0.2

+1

Counts

Full Scale = 200mV or 2V

CMRR

Common Mode Rejection Ratio

(Note 3)

—50

—

µV/V

Full Scale = 200mV

Noise (Peak to Peak 95% of Time)

—

15

—

µVV

Full Scale = 200mV

Leakage Current at Input

—

1

10

pA

Zero Reading Drift

—

0.2

1

µV/°C

“C” Device = 0°C to +70°C

—1.0

2

µV/°C

“I” Device= -25°C to+85°C

Note

1:

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

µA.

2:

Dissipation rating assumes device is mounted with all leads soldered to printed circuit board.

3:

Refer to “Differential Input” discussion.

4:

Backplane drive is in phase with segment drive for “OFF” segment, 180° out of phase for “ON” segment. Frequency is

20 times conversion rate. Average DC component is less than 50mV.

5:

The TC7116/TC7116A logic inputs have an internal pull-down resistor connected from HLDR, Pin 1 to TEST, Pin 37. The

TC7117/TC7117A logic inputs have an internal pull-down resistor connected from HLDR, Pin 1 to GND, Pin 21.