© 2006 Microchip Technology Inc.

DS21455C-page 5

TC7106/A/TC7107/A

TABLE 1-1:

TC7106/A AND TC7107/A ELECTRICAL SPECIFICATIONS

Symbol

Parameter

Min

Typ

Max

Unit

Test Conditions

Zero Input Reading

-000.0

±000.0

+000.0

Digital

Reading

Full Scale = 200.0mV

Ratiometric Reading

999

999/1000

1000

Digital

Reading

R/O

Rollover Error (Difference in Reading for

Equal Positive and Negative

Reading Near Full Scale)

-1

±0.2

+1

Counts

Linearity (Max. Deviation from Best

Straight Line Fit)

-1

±0.2

+1

Counts

Full Scale = 200mV or

Full Scale = 2.000V

CMRR

Common Mode Rejection Ratio (Note 3)

—50

—

μV/V

Full Scale = 200.0mV

Noise (Peak to Peak Value not Exceeded

95% of Time)

—15

—

Full Scale - 200.0mV

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

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

Supply Current (Does not include LED

Current For TC7107/A)

—0.8

1.8

mA

Analog Common Voltage

(with Respect to Positive Supply)

2.7

3.05

3.35

V

25k

Ω Between Common and

Positive Supply

Temperature Coefficient of Analog

Common (with Respect to Positive Supply)

—

—

—

—

25k

Ω Between Common and

Positive Supply

7106/7/A

7106/7

20

80

50

—

ppm/°C

ppm/°C

0°C

(“C” Commercial Temperature

Range Devices)

Temperature Coefficient of Analog

Common (with Respect to Positive Supply)

—

—

75

ppm/°C

0°C

(“I” Industrial Temperature

Range Devices)

TC7106A ONLY Peak to Peak

Segment Drive Voltage

4

5

6

V

V+ to V- = 9V

(Note 4)

TC7106A ONLY Peak to Peak

Backplane Drive Voltage

4

5

6

V

V+ to V- = 9V

(Note 4)

TC7107A ONLY

Segment Sinking Current (Except Pin 19)

5

8.0

—

mA

V+ = 5.0V

Segment Voltage = 3V

TC7107A ONLY

Segment Sinking Current (Pin 19)

10

16

—

mA

V+ = 5.0V

Segment Voltage = 3V

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.