Dac Isolated Power Source - Epson S1D13505F00A Technical Manual

DAC Isolated Power Source

Table 7-1 shows power source required to operate the S1D13505.
Power Source
Pin Name
V
DD
V
SS
DACV
DD
DAVV
SS
The power source and ground of digital and analog systems are separated in the S1D13505, because
if they are used commonly at the S1D13505, a digital power source system noise occurs and the ana-
log characteristics of the DAC can not be maintained. Therefore, the external part of the S1D13505
on the board between digital and analog systems must be separated. To achieve the separation, we
recommend that digital and analog systems be physically enclosed by wiring on the board or noise
should be stopped by using ferrite beads, a choke coil or a noise filter.
S1D13505
APPLICATION NOTES (X23A-G-005-05)
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Table 7-1 S1D13505 Power Supply Pin Description
Power Source Specification
Uses for digital system power source of internal logic and I/O cells.
Uses for digital system ground of internal logic and I/O cells.
Built -in DAC isolated power source
Built-in DAC isolated ground
V
DD
Digital V Analog V
DD DD
DAC
Digital
Analog
Circuit
Circuit
V V
SS SS
V
SS
EPSON
7: DAC APPLICATION NOTES
5-31