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BH2221FV Datasheet

  • BH2221FV

  • 8bit 12ch D/A converter

  • 6頁

  • ROHM

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BH2221FV
Standard ICs
8bit 12ch D/A converter
BH2221FV
BH2221FV is an 8bit D/A converter for electronic adjustment. The 12-channel DC output voltage can be independently
controlled by three-wire serial interface from micro-controller. The D/A converter can generate without loss by Rail-to-Rail
output within the setting voltage. The built-in power ON reset circuit keeps the output state Low after the power is ON and
prevents the unstable output state.
!
Applications
The voltage adjustment for DVC, DSC etc.
!
Features
1) 8bit 12-channel D/A converters adopting R-2R system.
2) The full scale output voltage range : 2.7V鈭?.5V.
3) 3-wire 12-bit serial interface.
4) POWER ON RESET circuit.
5) SSOP-B20 package.
!
Absolute maximum ratings
(Ta=25擄C)
Parameter
Power supply voltage
Maximum output voltage
Storage temperature
Power dissipation
Symbol
V
CC
V
IN
Tstg
Pd
Limits
鈭?.3~+7.0
鈭?.3~V
CC
鈭?5~+125
400
鈭?/div>
Unit
V
V
擄C
mW
鈭桼educed
by 4mW for each increase in Ta of 1擄C over 25擄C.
This product is not designed for protection against radioactive rays.
!
Recommended operating conditions
(Ta=25擄C)
Parameter
V
CC
supply voltage
V
DD
supply voltage
Analog output source current
Analog output sink current
Operating temperature range
Clock frequency
Limit load capacitance
Please set to V
CC
鈮?/div>
V
DD
.
Symbol
V
CC
V
DD
I
OL
I
OH
Topr
FSCLK
CL
Min.
2.7
2.7
鈭?/div>
鈭?/div>
鈭?0
鈭?/div>
鈭?/div>
Typ.
鈭?/div>
鈭?/div>
鈭?/div>
鈭?/div>
鈭?/div>
1.0
鈭?/div>
Max.
5.5
V
CC
1.0
1.0
85
鈭?/div>
0.1
Unit
V
V
mA
mA
擄C
MHz
碌F
1/6

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