BU2507FV ROHM Electronics, BU2507FV Datasheet

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BU2507FV

Manufacturer Part Number
BU2507FV
Description
Manufacturer
ROHM Electronics
Datasheet

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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=25°C)
!Recommended operating conditions (Ta=25°C)
Supply voltage
Upper reference voltage of D/A converter
Input voltage
Output voltage
Power dissipation
Operating temperature
Storage temperature
∗ Operating at higher than
Power supply voltage
Parameter
Parameter
Ta=25°C, 3.5mW shall be redused per 1°C.
Symbol
V
CC
Symbol
V
Topr
Tstg
V
V
V
Pd
OUT
4.5~5.5
CC
DD
Limits
IN
−0.3~+6.0
−0.3~+6.0
−0.3~+6.0
−0.3~+6.0
−55~+125
−25~+85
Limits
350
Unit
V
Unit
mW
° C
° C
V
V
V
V
BU2507FV
1/8

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BU2507FV Summary of contents

Page 1

... D/A converter BU2507FV BU2507FV 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. ...

Page 2

... CLK 14bit shift register D10 1112 13 Adress Decoder Reset BU2507FV A 6 Vcc (Vref ) H 2/8 ...

Page 3

... 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 ∗1 to inside from inside BU2507FV Equivalent Circuit ) input terminal input terminal 5 H − ...

Page 4

... S 1.0 DL −3.5 − S 3.5 L −25 − ZERO −25 − FULL − Rup 12.5 25 37.5 BU2507FV Conditions CLK=10MHz operation, V =5V, I =0µ =0∼ =2.5mA OL I =−2.5mA OH =0V, Ta=25°C) Unit Conditions Vref =5V, Vref = Data condition : Maximum Current ...

Page 5

... µS − 20 The time until the becomes the final value 7 of 1/2 LSB. tcr t CKH t CKL t t DCH CHD t CHL Fig.1 BU2507FV Conditions : 0.5V⇔4.5V O tcf t LDC t LDH t LDD 5/8 ...

Page 6

... selection O 0 Don't Care 1 Don't Care 0 Don't Care 1 Don't Care 0 Command for test 1 Command for test Fig.2 BU2507FV First LSB Address select data bit D4 D/A output 0 Vref L 1 (Vref -Vref ) / 1024×1+Vref (Vref -Vref ) / 1024× ...

Page 7

... GND, this IC will have equivalent function as power-on-reset, by making a time-delay. When a reset signal is inputted from the controller possible that the output of all channels are fixed on Low-level in the “L” section on the pulse. Vcc Vref H Ao1 Ao2 Vref L Ao3 RESET LD Ao6 CLK DI GND BU2507FV CH1 CH2 CH3 CH6 and GND DD 7/8 ...

Page 8

... Optical disc ICs ! ! ! ! External dimensions (Units : mm) 5.0±0 0.15±0.1 0.1 0.65 0.22±0.1 SSOP-B14 BU2507FV 8/8 ...

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