PI5A100 Ver la hoja de datos (PDF) - Diodes Incorporated.

Número de pieza

componentes Descripción

Fabricante

PI5A100

Precision, Wide-Bandwidth Quad SPDT Analog Switch

Diodes Incorporated. 

A product Line of

Diodes Incorporated

PI5A100

Applications Information

Overvoltage Protection

Proper power-supply sequencing is recommended for all CMOS devices. Do not exceed the absolute maximum ratings, because stresses

beyond the listed ratings may cause permanent damage to the devices. Always sequence V+ on first, followed by V-, and then logic in-

puts. If power-supply sequencing is not possible, add two small signal diodes or two current limiting resistors in series with the supply

pins for overvoltage protection (Figure 8). Adding diodes reduces the analog signal range, but low switch resistance and low leakage

characteristics are unaffected.

RGB Switch

Figure 9 illustrates a simple low cost RGB switch. The RGB -to-Composite Decoder produces either NTSC or S-VHS video from an

RGB source. Asingle PI5A100 selects one of the two video sources to produce either SVHS, Composite or RGB video outputs. The low

insertion loss of the PI5A100 eliminates the need for expensive input/output buffers.

Positive Supply

V+

NO

Vg

COM

V-

Figure 8: Overvoltage protection is accomplished using two external blocking diodes or two current limiting resistors.

RGB to

Composite

Encoder

SVGA

R-G-B

4

Y

Composite

C

Sync

R

G

B

Sync

Select

+5V

PI5A100

S-Video

Connector

R or Luma 0.7V

G or Composite 0.714V

B or Chroma 0.28V

H-Sync-0.3V

Composite

Connector

VGA

Connect or

Figure 9: The single PI5A100 is used to select SVHS, VGA or Composite video outputs.

PI5A100

Document Number DS40515 Rev 1-2

9

www.diodes.com

December 2017

Diodes Incorporated

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