UPC834, UPC4064

R03DS0153EJ0200 Rev.2.00

Page 6 of 7

Feb.21.25

USE WITH PRECAUTIONS

Managing unused circuits

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

Example of handling unused circuit

Note in this example, an intermediate voltage of V + and V - is applied.

• Power Supply (Dual Power Supply / Single Power Supply)

The op-amp operates when a predetermine voltage is applied between V + to V - . Therefore, while it

operates from a single power supply (V - = GND), it is not possible to operate the input and output near

GND. So please be careful of the common-mode input voltage range and maximum output voltage.

• 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 voltage of input pin is

lower than V−, or the voltage of 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.

• Input common-mode voltage range

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

voltage range is as follows.

VICM (TYP.): V - +2 to V + [V] (TA = 25 °C)

During designing, do include some margin by considering characteristic variations, temperature

characteristics etc.

• Maximum Output Voltage

When the supply voltage does not meet the condition of electrical characteristics, the TYP. value range of

the maximum output voltage is as follows:

Vom + (TYP.): V + -1 [V] (TA = 25 °C), Vom - (TYP.): V - +1.4 [V] (TA = 25 °C)

During designing, do include some margin by considering characteristic variations, temperature

characteristics and so on. In addition, also note that the output voltage range (Vom+ to Vom-) will become

narrow when the output current increases.

• Handling of ICs

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

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

V -

+

-

V -

V +

V +

R

R

同相入力電圧範囲

(VICM) 内の電位へ

To potentials within the

input common-mode

voltage range (VICM)