UPC277G2, UPC393G2

R03DS0132EJ0200 Rev.2.00

Page 7 of 8

Feb.4.25

USE WITH PRECAUTIONS

• Managing unused circuits

If there is an unused circuit, the following connection is recommended.

Process example of unused circuits

• Ratings of input/output pin voltage

When the voltage of input/output pin exceeds the absolute maximum rating, the parasitic diode within the IC may conduct,

causing characteristics degradation or damage. In addition, if the input pin is lower than V−, or the output pin exceeds

the power supply voltage, it is recommended to make a clamping circuit using a diode with low forward voltage (e.g.:

Schottky diode) as protection.

• Range of common-mode input voltage

When the supply voltage does not meet the condition of electrical characteristics, the range of common-mode input

voltage is as follows.

VICM (TYP.): V - ~ V + -1.5 [V] (TA = 25

°C)

During designing, do include some tolerance by considering temperature characteristics etc.

• Range of input current

The “Input Bias Current [IB]” specified in the electric characteristic table, is the average current value flowing to the +input

pin [IN] and the - input pin [II] when the operation amplifier input stage are balanced (in a state where negative feedback

is applied).

When the comparator is active, the input stage of the differential amplified circuit will not be balance during comparison,

the amount of input current flow is twice the amount to the pin with lower potential.

• Handling of ICs

When stress is added to the ICs due to warpage or bending of a board, the characteristic may fluctuates due to

piezoelectric effect. Therefore, pay attention to warpage or bending of a board.

OUT

(オープン)

V -

-

+

同相入力電圧範囲

(VICM) 内の電位へ

V -

V +

(open)

To potentials within the

range of common-mode

input voltage (VICM)