BU2506FV,BU2505FV

Technical Note

7/8

www.rohm.com

2009.06 - Rev.A

© 2009 RzOHM Co., Ltd. All rights reserved.

●

Equivalent Circuits

1

to

inside

2

to

inside

*1

3

from

inside

4

･

5

･

6

4

5

6

*1 25kΩ at Vcc = 5.0V (changes according to voltage supplied)

●

Standard Example Application Circuit

●

Operation Notes

Ensure that a constant voltage is supplied to each of the 1 ground and 3 power supply terminals.

Insert a bypass capacitor between each power supply terminal and ground in order to prevent deterioration of the D/A

conversion accuracy due to ripple and noise signals.

A capacitor should be inserted between the output and ground in order to eliminate jitter and noise.

A capacitance up to 100pF is recommended (including the capacitance of the wire).

This IC can select to decode the 10bit DI data pattern using either LSB first or MSB first, depending on the conditions of the

REVERSE terminal. Therefore, be sure to stabilize the REVERSE terminal by leaving it open or short-circuiting VDD (LSB

first), or short-circuiting GND (MSB first).

Inserting a capacitor between the RESET terminal and GND and utilizing a time constant enables power ON reset functionality.

Furthermore, when inputting the reset signal from the controller, it is possible to fix the output of all channels to Low at the

low area of pulse.

AO 1

AO 2

AO 3

VC C

GN D

AO 10

DI

CLK

LD

Controller

CH1

CH2

CH3

CH10

Reverse

Reset