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BU2507FV
Optical disc ICs
10bit 6-channel D/A converter
BU2507FV
BU2507FV is an IC that incorporates 10bit 6-channel D/A converter using the R-2R system. Each channel output incorporates a Rail to Rail type output with buffer amplifier. This IC utilizes the TTL level input method. RESET pin can keep the output voltage in the lower reference voltage range.
Applications DVD, CD-R, CD-RW, DVC, Digital camera, and other industrial equipments.
Features 1) High-performance 10bit 6-channel D/A converter adopting the R-2R system. 2) Power supply voltage : 4.5~5.5V. 3) Each channel output incorporates a Rail to Rail type output with buffer amplifier. 4) RESET pin can keep output voltage of all channels within the lower reference voltage range. 5) Digital input compatible with TTL levels. 6) 10MHz input frequency. 7) 14bit 3wire serial data + RESET signal input. (4bit address + 10bit data)
Absolute maximum ratings (Ta=25C)
Parameter Supply voltage Symbol VCC VDD Limits -0.3~+6.0 -0.3~+6.0 -0.3~+6.0 -0.3~+6.0 350
Unit V V V V mW
Upper reference voltage of D/A converter Input voltage Output voltage
Power dissipation Operating temperature Storage temperature
VIN VOUT
Pd Topr Tstg
-25~+85 -55~+125
C C
Operating at higher than Ta=25C, 3.5mW shall be redused per 1C.
Recommended operating conditions (Ta=25C)
Parameter Power supply voltage Symbol VCC Limits 4.5~5.5 Unit V
1/3
BU2507FV
Optical disc ICs
Block diagram
GND
AO1
DI
CLK
LD
AO6
Vcc
14
13
12
11
10
9
8
14bit shift register 10bit R-2R D/A converter D0 1 2 3 4 5 6 7 8 9 D10 1112 13 D/A
CH1
10bit Latch Adress Decoder
6
L
10bit Latch
L
L
L
CH2
10bit R-2R D/A converter Buffer Operational Amplifier
3
D/A
4
D/A
5
D/A
1
Vss (VrefL)
2
AO2
3
AO3
4
Reset
5
AO4
6
AO5
7
VDD (VrefH)
2/3
BU2507FV
Optical disc ICs
Pin descriptions
Pin No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 Pin name Vss Ao2 Ao3 Reset Ao4 Ao5 VDD Vcc Ao6 LD CLK DI Ao1 GND Analog / Digital Analog Analog Analog Digital Digital Analog Analog - Analog Digital Digital Digital Analog - I/O - O O I O O - - O I I I O - Function D/A converter lower reference voltage (VrefL) input terminal 10bit D/A converter output terminal (CH2) 10bit D/A converter output terminal (CH3) The analog output of all channels is fixed for "L" 10bit D/A converter output terminal (CH4) 10bit D/A converter output terminal (CH5) D/A converter upper reference voltage (VrefH) input terminal Power supply terminal 10bit D/A converter output terminal (CH6) When H-level signal is input to this terminal, the value stored in 14-bit shift register is loaded in decoder and D/A converter output register Shift clock input terminal. Input signal at DI pin is input to 14-bit shift register at rise of shift clock pulse Serial data input terminal to input 14-bit (address 4 bit + deta 10bit) long serial data 10bit D/A converter output terminal (CH1) GND terminal Equivalent Circuit 6 4 4 2 4 4 5 - 4 1 1 1 4 -
External dimensions (Unit : mm)
5.00.2
14 8
6.40.3 4.40.2
1
7
1.150.1 0.1
0.150.1
0.65
0.1 0.220.1
SSOP-B14
0.3Min.
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 use silicon as a basic material. 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-Rev1.0

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