參數(shù)資料
型號(hào): BH2222FV
廠商: Rohm CO.,LTD.
英文描述: 8bit 20ch D/A converter
中文描述: 8位20ch D / A轉(zhuǎn)換
文件頁(yè)數(shù): 1/4頁(yè)
文件大?。?/td> 87K
代理商: BH2222FV
BH2222FV
Standard ICs
8bit 20ch D/A converter
Rev.A
1/3
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.
z
Applications
z
External dimensions
(Unit : mm)
The voltage adjustment for DVC, DSC etc.
z
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.
z
Absolute maximum ratings
(Ta=25
°
C)
SSOP-B28
0.15
±
0.1
0
1
±
0
1
0.65
7
±
0
5
±
0
28
10.0
±
0.2
0
14
15
0.22
±
0.1
0.1
Parameter
Symbol
Limits
Unit
Power supply voltage
V
CC
0.3~
+
7.0
0.3~V
CC
55~
+
125
V
Maximum output voltage
V
IN
V
Storage temperature
Tstg
°
C
Power dissipation
Reduced by 6.4mW for each increase in Ta of 1
°
C over 25
°
C.
This product is not designed for protection against radioactive rays.
z
Recommended operating conditions
(Ta=25
°
C)
Pd
640
mW
Parameter
Symbol
Typ.
Max.
Unit
V
CC
supply voltage
V
CC
5.5
V
1.0
Analog output source current
I
OL
mA
1.0
mA
Analog output sink current
I
OH
85
°
C
Operating temperature range
Topr
0.47
Limit load capacitance
Please set to V
CC
V
DD
1, V
DD
2.
CL
μ
F
Min.
4.5
V
DD
2 supply voltage
V
DD
2
V
CC
V
2.7
V
DD
1 supply voltage
V
DD
1
V
CC
V
2.7
20
1.0
Clock frequency
FSCLK
MHz
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