BH2222FV
Standard ICs
8bit 20ch D/A converter
BH2222FV
BH2222FV is an 8bit D/A converter for electronic adjustment. The 20-channel output voltage can be independently
controlled by three-wire serial interface from micro-controller. The built-in power on reset circuit keeps the output state
Low after the power is on. 4-channel have data register function. Two kinds of set voltage can be retained, and output
voltage can be switched by SEL pin.
!
Applications
The voltage adjustment for DVC, DSC etc.
!
Features
1) 8bit 20-channel D/A converters adopting R-2R system.
2) 3-wire + 1-wire 16-bit serial interface.
3) POWER ON RESET circuit.
4) The full scale output voltage range : 2.7 ~ 5.5V.
5) It is possible to set the two output full scale level independently.
6) 4-channel date Register extension function.
7) SSOP-B28 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
640
鈭?/div>
Unit
V
V
擄C
mW
鈭桼educed
by 6.4mW 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
1 supply voltage
V
DD
2 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
1, V
DD
2.
Symbol
V
CC
V
DD
1
V
DD
2
I
OL
I
OH
Topr
FSCLK
CL
Min.
4.5
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>
鈭?/div>
1.0
鈭?/div>
Max.
5.5
V
CC
V
CC
1.0
1.0
85
鈭?/div>
0.47
Unit
V
V
V
mA
mA
擄C
MHz
碌F
1/7
BH2222FV相關(guān)型號(hào)PDF文件下載
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