3-185

TELCOM SEMICONDUCTOR, INC.

7

6

5

4

3

1

2

8

ELECTRICAL CHARACTERISTICS (Cont.) (Note 3)

TC7106/A & TC7107/A

Parameters

Test Conditions

Min

Typ

Max

Unit

Analog Common Voltage

25k

Ω Between Common

2.7

3.05

3.35

V

(With Respect to Pos. Supply)

and Pos. Supply

Temp. Coeff. of

25k

Ω Between Common

Analog Common

and Pos. Supply

(With Respect

0

7106A/7A

20

50

ppm/

°C

to Pos. Supply)

("C", Commercial Temp. Range Devices)

7106/7

80

—

ppm/

°C

Temp. Coeff. of

25k

Ω Between Common

Analog Common

and Pos. Supply

(With Respect

– 25

—

—

75

ppm/

°C

to Pos. Supply)

(“I,” Industrial Temp. Range Devices)

TC7106A ONLY Pk – Pk

4

5

6

V

Segment Drive Voltage (Note 5)

TC7106A ONLY Pk – Pk

4

5

6

V

Backplane Drive Voltage (Note 5)

TC7107A ONLY

5

8.0

—

mA

Segment Sinking Current (Except Pin 19)

Segment Voltage = 3V

TC7107A ONLY

10

16

—

mA

Segment Sinking Current (Pin 19)

Segment Voltage = 3V

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

±100µA.

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 50mV.

TC7106

TC7106A

TC7107

TC7107A

3-1/2 DIGIT A/D CONVERTERS