ICL7106CPL datasheet(13/17 Pages) ARTSCHIP

13 / 17 page

ICL7106,ICL7107,ICL7016S,ISL7107S

31/2 Digit,

LCD/LED Display, A/D Converters

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Typical Applications (Continued)

IN LO is tied to supply COMMON establishing the correct

common mode voltage. If COMMON is not shorted to GND, the

input voltage may float with respect to the power supply and

COMMON acts as a pre-regulator for the reference. If

COMMON is shorted to GND, the input is single ended

(referred to supply GND) and the pre-regulator is overridden.

FIGURE 13. ICL7107 WITH AN EXTERNAL BAND-GAP

REFERENCE (1.2V TYPE)

FIGURE 15. ICL7106 AND ICL7107:RECOMMENDED

COMPONENT VALUES FOR 2V FULL SCALE

Since low TC zeners have breakdown voltages ~6.8V, diode

must be placed across the total supply (10V). As in the case of

Figure 12, IN LO may be tied to either COMMON or GND.

FIGURE 14. ICL7107 WITH ZENER DIODE REFERENCE

An external reference must be used in this application, since

the voltage between V+ and V- is insufficient for correct

operation of the internal reference.

FIGURE 16. ICL7107 OPERATED FROM SINGLE +5V

ICL7106CPL Datasheet(PDF) 13 Page - ARTSCHIP ELECTRONICS CO.,LMITED.