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BU2506FV_09 Datasheet, PDF (7/9 Pages) Rohm – High-precision 10bit 8ch 10ch Type D/A Converters | |||
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BU2506FV,BU2505FV
âEquivalent Circuits
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*1
2
Technical Note
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*1 25k⦠at Vcc = 5.0V (changes according to voltage supplied)
âStandard Example Application Circuit
Controller
V refH
VCC
AO1
V refL
Reverse
Reset
AO2
AO3
LD
CLK
DI
GND
AO10
CH1
CH2
CH3
CH10
âOperation 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.
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7/8
2009.06 - Rev.A
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