BU2508FV_09 Datasheet, PDF (7/9 Pages) Rohm – High-precision 10bit 4ch-E6ch Type D/A Converters

BU2508FV,BU2507FV
●Equivalent Circuits
1
toinside
3
from
inside
*1: 25kΩ at Vcc = 5.0V (changes according to voltage supplied)
●Standard Example Application Circuit
*1
2
4
・
5
5
・
6
6
Technical Note
toinside
4
V refH
VCC
AO1
V refL
AO2
AO3
CH1
CH2
CH3
C o n tro lle r
Reset
LD
CLK
DI
GND
AO6
CH6
●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).
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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2009.06 - Rev.A