CXD2306 データシートの表示（PDF） - Sony Semiconductor

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CXD2306

10-bit 80MSPS 1ch D/A Converter

Sony Semiconductor 

CXD2306Q

Latch Up Prevention

The CXD2306Q is a CMOS IC which requires latch up precautions. Latch up is mainly generated by the lag in

the voltage rising time of AVDD (Pin 20 and 21) and DVDD (Pin 11 and 28), when power supply is ON.

1. Correct usage

a. When analog and digital supplies are from different sources

AVDD

DVDD

20 21

13 28

AVDD

DVDD

+5V

+5V

C

C

CXD2306Q

DIGITAL IC

AVSS

AVSS

25

DVSS

15 27

DVSS

b. When analog and digital supplies are from a common source

(i)

DVDD

20 21

13 28

AVDD

DVDD

+5V

C

C

CXD2306Q

AVSS

AVSS

25

DVSS

15 27

DVSS

(ii)

DVDD

DIGITAL IC

+5V

C

AVSS

20 21

AVDD

13 28

DVDD

C

CXD2306Q

AVSS

25

DVSS

15 27

DVSS

—10—

DIGITAL IC

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