UTC7106

CMOS IC

4

QW-R502-018,B

PARAMETER

SYMBOL

TEST CONDITIONS

MIN

TYP

MAX

UNIT

Temperature Coefficient of Analog

Common

25kΩ Between Common

and Positive Supply (With

Respect to +Supply)

80

ppm/℃

DISPLAY DRIVER

Peak-To-Peak Segment Drive

Voltage

Peak-To-Peak Backplane Drive

Voltage

V+ ~ V-=9V(Note 4)

4

5.5

6

V

tested in the circuit of Figure 1.

Note 4: Back plane drive is in phase with segment drive for”off”segment,180 degrees out of phase for”on”

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

Note 5: Not tested, guaranteed by design.

TYPICAL APPLICATIONS AND TEST CIRCUITS

(LCD DISPLAY COMPONENTS SELECTED FOR 200mV FULL SCALE)

UTC 7106

DISPLAY

R3

C4

R1

R4

C1

R5

C5

IN

+ -

C2 R2 C3

DISPLAY

C1=0.1μF

C2=0.47μF

C3=0.22μF

C4=100pF

C5=0.02μF

R1=24kΩ

R2=47kΩ

R3=91kΩ

R4=1kΩ

R5=1MΩ

+

-

9V

DESIGN INFORMATION SUMMARY SHEET

*OSCILLATOR FREQUENCY

fosc=0.45/RC

*OSCILLATOR PERIOD

*INTEGRATION CLOCK FREQUENCY