TSH103

Power supply considerations

5/10

4

Power supply considerations

Correct power supply bypassing is very important for optimizing performance in high-

frequency ranges. Bypass capacitors should be placed as close as possible to the IC pins to

improve high-frequency bypassing. A capacitor of 100µF is necessary to minimize the

power supply noise in low frequency. For better quality bypassing, we recommend to add a

CMS 100nF capacitor, also placed as close as possible to the IC pins.

Figure 7.

Circuit for power supply bypassing

Figure 8.

Noise supply rejection

+

5

TSH103

IN1

IN2

IN3

OUT1

OUT2

OUT3

4

100k

1M

10M

-100

-90

-80

-70

-60

-50

-40

-30

-20

-10

0

Vcc=+5Vdc+0.2Vac

Load=150

Ω

C

LF

=100uF

C

HF

=100nF

Frequency (Hz)