View BH2222FV_220532.PDF datasheet online --- IC-ON-LINE

Datasheet File OCR Text:

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.
External dimensions (Unit : mm)
10.00.2
28 15
7.60.3 5.60.2
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.
1
14
1.150.1 0.1
0.150.1
0.1
0.65
0.220.1
SSOP-B28
Absolute maximum ratings (Ta=25C)
Parameter Power supply voltage Maximum output voltage Storage temperature Power dissipation Symbol VCC VIN Tstg Pd Limits -0.3~+7.0 -0.3~VCC -55~+125 640 Unit V V C mW
Reduced by 6.4mW for each increase in Ta of 1C over 25C. This product is not designed for protection against radioactive rays.
Recommended operating conditions (Ta=25C)
Parameter VCC supply voltage VDD1 supply voltage VDD2 supply voltage Analog output source current Analog output sink current Operating temperature range Clock frequency Limit load capacitance
Please set to VCC VDD1, VDD2.
Symbol VCC VDD1 VDD2 IOL IOH Topr FSCLK CL
Min. 4.5 2.7 2.7 - - -20 - -
Typ. - - - - - - 1.0 -
Max. 5.5 VCC VCC 1.0 1.0 85 - 0.47
Unit V V V mA mA C MHz F
0.3Min.
Rev.A
1/3
BH2222FV
Standard ICs
Block diagram
VCC
1
VCC
POWER_ON RESET VDD2
Serial interface
28 CLK 27 DI
R-2R DAC
VDD2
EX1
3 4 5 6 7 8 9
VCC
R-2R DAC
EXD 8bitREG + DEC EXD 8bitREG + DEC 8bitREG + DEC 8bitREG + DEC 8bitREG + DEC 8bitREG + DEC 8bitREG + DEC 8bitREG + DEC 8bitREG + DEC 8bitREG + DEC
EXD 8bitREG + DEC EXD 8bitREG + DEC 8bitREG + DEC 8bitREG + DEC 8bitREG + DEC 8bitREG + DEC 8bitREG + DEC 8bitREG + DEC 8bitREG + DEC 8bitREG + DEC
VDD2
VDD2
2
26 EX4 25 EX3 24 AO16 23 AO15 22 AO14 21 AO13 20 AO12
VCC
EX2
R-2R DAC
R-2R DAC
AO1
R-2R DAC
R-2R DAC
AO2
R-2R DAC R-2R DAC
R-2R DAC R-2R DAC
AO3
AO4
VDD1
AO5
VCC
VCC
R-2R DAC
VDD1
R-2R DAC
R-2R DAC R-2R DAC
AO6
10 11 12 13 14
R-2R DAC R-2R DAC R-2R DAC VDD1
R-2R DAC R-2R DAC R-2R DAC
19 AO11 18 AO10 17 AO9 16 SEL 15 LD
AO7
AO8
VDD1
GND
Rev.A
2/3
BH2222FV
Standard ICs
Pin descriptions
Pin No. Pin name 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 VCC VDD2 EX1 EX2 AO1 AO2 AO3 AO4 AO5 AO6 AO7 AO8 VDD1 GND LD SEL AO9 AO10 AO11 AO12 AO13 AO14 AO15 AO16 EX3 EX4 DI CLK In / Out - - OUT OUT OUT OUT OUT OUT OUT OUT OUT OUT - - IN IN OUT OUT OUT OUT OUT OUT OUT OUT OUT OUT IN IN Power supply - - VDD2 VDD2 VDD2 VDD2 VDD2 VDD1 VDD1 VDD1 VDD1 VDD1 - - - - VDD1 VDD1 VDD1 VDD1 VDD1 VDD2 VDD2 VDD2 VDD2 VDD2 - - Serial Data input pin Serial Clock input pin Analog output pins (Register extension) Analog output pins Power supply pin Common GND pin Serial Load input pin Select extended data register pin Analog output pins Power supply pin Power supply pin Analog output pins (Register extension) Functions
Rev.A
3/3
Appendix
Notes
No technical content pages of this document may be reproduced in any form or transmitted by any means without prior permission of ROHM CO.,LTD. The contents described herein are subject to change without notice. The specifications for the product described in this document are for reference only. Upon actual use, therefore, please request that specifications to be separately delivered. Application circuit diagrams and circuit constants contained herein are shown as examples of standard use and operation. Please pay careful attention to the peripheral conditions when designing circuits and deciding upon circuit constants in the set. Any data, including, but not limited to application circuit diagrams information, described herein are intended only as illustrations of such devices and not as the specifications for such devices. ROHM CO.,LTD. disclaims any warranty that any use of such devices shall be free from infringement of any third party's intellectual property rights or other proprietary rights, and further, assumes no liability of whatsoever nature in the event of any such infringement, or arising from or connected with or related to the use of such devices. Upon the sale of any such devices, other than for buyer's right to use such devices itself, resell or otherwise dispose of the same, no express or implied right or license to practice or commercially exploit any intellectual property rights or other proprietary rights owned or controlled by ROHM CO., LTD. is granted to any such buyer. Products listed in this document are no antiradiation design.
The products listed in this document are designed to be used with ordinary electronic equipment or devices (such as audio visual equipment, office-automation equipment, communications devices, electrical appliances and electronic toys). Should you intend to use these products with equipment or devices which require an extremely high level of reliability and the malfunction of with would directly endanger human life (such as medical instruments, transportation equipment, aerospace machinery, nuclear-reactor controllers, fuel controllers and other safety devices), please be sure to consult with our sales representative in advance. About Export Control Order in Japan Products described herein are the objects of controlled goods in Annex 1 (Item 16) of Export Trade Control Order in Japan. In case of export from Japan, please confirm if it applies to "objective" criteria or an "informed" (by MITI clause) on the basis of "catch all controls for Non-Proliferation of Weapons of Mass Destruction.
Appendix1-Rev1.1

▲Up To Search▲

Price & Availability of BH2222FV

	To Download BH2222FV Datasheet File
If you can't view the Datasheet, Please click here to try to view without PDF Reader .