3-205

TELCOM SEMICONDUCTOR, INC.

7

6

5

4

3

1

2

8

3-1/2 DIGIT ANALOG-TO-DIGITAL

CONVERTERS WITH HOLD

TC7116

TC7116A

TC7117

TC7117A

ELECTRICAL CHARACTERISTICS (Cont.)

Parameter

Test Conditions

Min

Typ

Max

Unit

Temperature Coefficient of Analog Common

"I" Device: –25

°C to +85°C

—

—

75

ppm/

°C

(With Respect to Positive Supply)

25 k

Ω Between Common and

Positive Supply (TC7116A/TC7117A)

TC7116/TC7116A ONLY Peak-to-Peak

4

5

6

V

Segment Drive Voltage

(Note 5)

TC7116/TC7116A ONLY Peak-to-Peak

4

5

6

V

Backplane Drive Voltage

(Note 5)

TC7117/TC7117A ONLY Segment

5

8

—

mA

Sinking Current (Except Pin 19)

Segment Voltage = 3V

TC7117/TC7117A ONLY Segment

10

16

—

mA

Sinking Current (Pin 19 Only)

Segment Voltage = 3V

NOTES: 1. Input voltages may exceed supply voltages, provided input current is limited to

±100 µA.

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

circuit of Figure 1.

4. Refer to "Differential Input" discussion.

5. 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 50 mV.

6. 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.