© 2002 Microchip Technology Inc.

DS21457B-page 5

TC7116/A/TC7117/A

Scale Factor Temperature Coefficient

—

1

5

ppm/°C

“C” Device = 0°C to +70°C

(Ext. Ref = 0ppm°C)

—

—

20

ppm/°C

“I” Device = -25°C to +85°C

Input Resistance, Pin 1

30

70

—

k

Ω

(Note 5)

—

—

Test + 1.5

V

TC7116/A Only

—

—

GND + 1.5

V

TC7117/A Only

V

—

—

V

Both

Supply Current (Does not Include LED

Current for TC7117/A)

—0.8

1.8

mA

Analog Common Voltage

(with Respect to Positive Supply)

2.4

3.05

3.35

V

25k

Ω Between Common

and Positive Supply

Temperature Coefficient of Analog

Common (with Respect to Positive

Supply)

——

20

80

—

50

—

—

ppm/°C

ppm/°C

“C” Device: 0°C to +70°C

TC7116A/TC7117A

TC7116/TC7117

TC7116/TC7117A ONLY Peak to Peak

Segment Drive Voltage

45

6

V

V+ to V- = 9V

(Note 4)

TC7116A/TC7116A ONLY Peak to Peak

Backplane Drive Voltage

45

6

V

V+ to V- = 9V

(Note 4)

TC7117/TC7117A ONLY

Segment Sinking Current

(Except Pin 19)

5

8

—

mA

V+=5.0V

Segment Voltage = 3V

TC7117/TC7117A ONLY

Segment Sinking Current (Pin 19 Only)

10

16

—

mA

V+=5.0V

Segment Voltage = 3V

TC7116/A AND TC7117/A ELECTRICAL SPECIFICATIONS (CONTINUED)

Symbol

Parameter

Min

Typ

Max

Unit

Test Conditions

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.