RNA51957A, B

Preliminary

REJ03D0912-0402 Rev.4.02

Page 9 of 13

Apr 01, 2010

Notice for use

About the Power Supply Line

1. About bypass capacitor

Because the ripple and the spike of the high frequency noise and the low frequency are superimposed to the power

supply line, it is necessary to remove these.

and the GND line as shown in following figure 5.

Power-supply

Output

Vin

RNA51957

Input

GND

+

Delay capacitor

Cd

Example of ripple

noise measures

Figure 5 Example of Ripple Noise Measures

2. The sequence of voltage impression

Please do not impress the voltages to the input terminals earlier than the power supply terminal. Moreover, please

do not open the power supply terminal with the voltage impressed to the input terminal.

(The setting of the bias of an internal circuit collapses, and a parasitic element might operate.)

About the Input Terminal

1. Setting range of input voltage

The following voltage is recommended to be input to the input terminal (pin 2).

2. About using input terminal

Please do an enough verification to the transition characteristic etc. of the power supply when using independent

power supply to input terminal (pin 2).

Power-supply

Output

Vin

RNA51957

Input

GND

Delay capacitor

Cd

and operates in the range

Figure 6 Recommended Example