|
|
PDF BU2508FV Data sheet ( Hoja de datos )
| Número de pieza | BU2508FV | |
| Descripción | 10bit 4ch/6ch D/A Converters | |
| Fabricantes | ROHM Semiconductor | |
| Logotipo |  |
|
Hay una vista previa y un enlace de descarga de BU2508FV (archivo pdf) en la parte inferior de esta página. Total 21 Páginas | ||
|
No Preview Available !
Datasheet
D/A Converter Series for Electronic Adjustment
10bit 4ch/6ch D/A Converters
BU2507FV BU2508FV
General Description
The BU2507FV and BU2508FV ICs are 10bit R-2R type
D/A converters with 6ch and 4ch outputs, respectively.
Each channel incorporates a full swing output-type buffer
amplifier with high speed output response characteristics,
resulting in a greatly shortened D/A output settling time.
The ICs also have digital input pins compatible with TTL
levels, and the maximum value of the data transfer
frequency is 10MHz. With the variable output range
function, the upper and lower limits of the output voltage
can be set separately from the power supply voltage.
Features
■ Built-in Multi-channel R-2R Type 10bit D/A Converter
(BU2508FV: 4 Channels, BU2507FV: 6 Channels)
■ Built-in Full Swing Output Buffer Amplifier for All
Channels
■ RESET Terminal to fix the Output Voltage to the Lower
Reference Level for All Channels
■ Digital Inputs Compatible with TTL Levels
■ 3-wire Serial Interface and RESET Signal to send a
14bit Format Word (4bit Address and 10bit Data)
Applications
■ Control of the Various Types of Consumer and
Industrial Equipment
Typical Application Circuit
Key Specifications
■ Operating Supply Voltage Range：
■ Number of Channels：
BU2507FV：
BU2508FV：
■ Differential Non Linearity Error：
■ Integral Non Linearity Error：
■ Data Transfer Frequency：
4.5V to 5.5V
6ch
4ch
±1.0LSB(Max)
±3.5LSB(Max)
10MHz(Max)
Packages
SSOP-B14
W(Typ) x D(Typ) x H(Max)
5.00mm x 6.40mm x 1.35mm
SSOP-B14
VVDreDfH
(VrefH)
VVCCC
V(VVSrreeSffLL)
AAOO11
AAOO22
AAOO33
CCHH11
CCHH22
CCHH33
CCoonntroolllleerr
RREeSsEeTt
LLDD
CCLLKK
DDII
GGNNDD
AAOO66
CCHH66
○Product structure：Silicon monolithic integrated circuit
www.rohm.com
p© 2015 ROHM Co., Ltd. All rights reserved.
TSZ22111・14・001
○This product has no designed protection against radioactive rays.
1/17
TSZ02201-0RLR0GZ10150-1-2
11.Dec.2015 Rev.001
1 page  
BU2507FV BU2508FV
Timing Characteristics(Unless otherwise specified, VCC=5V, VrefH=5V, VrefL=0V, TA=25°C)
Parameter
Symbol
Limits
Min Typ Max
Conditions
Unit The voltage levels of the measured time
points are 20% or 80% of VCC.
Reset L pulse width
tRTL 50 -
-
-
Clock L pulse width
tCKL 50 -
-
-
Clock H pulse width
tCKH
50
-
-
-
Clock rise time
tcr - - 50
-
Clock fall time
Data setup time
tcf - - 50
ns
tDCH
20
-
-
-
-
Data hold time
tCHD
40
-
-
-
Load setup time
tCHL 50 -
-
-
Load hold time
tLDC 50 -
-
-
Load H pulse width
tLDH 50 -
-
-
D/A output settling time
CL≤100pF(Note 5), VO: 0.5V↔4.5V
The time interval from the start time to
tLDD - 7 20 μs change an output voltage to the time at
which the output voltage reaches to its
final value within 1/2 LSB.
(Note 5) A capacitor should be placed between the analog output and ground in order to eliminate noise.
A capacitance up to 100pF is recommended (including the capacitance of the wire).
RESET
CLK
DI
LD
Output
tRTL
tcr
tCKL
tCKH
tcf
tDCH tCHD
tCHL
tLDH
tLDC
tLDD
Applicational information
LD input
The LD input is a level trigger signal. When LD=H, an internal shift register value is loaded into a latch. It doesn’t
have to be cared whether CLK is H or L when LD changes to H. However CLK must not be changed while LD is H.
The shift register values pass through the latches if LD=H and CLK is toggled.
Power-on operation
The BU2507FV and the BU2508FV does not have a power-on reset function. Therefore, after power-on, data in
the internal registers are unknown. When RESET changes from H to L, all latch outputs turn into L, although the
shift registers are not reset.
Pull-down resister
Pin 4 is pulled up internally. If putting the external pull-down resister on it, the recommended value is less than
1kΩ.
Truth Table
Pin 4: RESET
L
Reset
H
Normal
www.rohm.co.jp
© 2015 ROHM Co., Ltd. All rights reserved.
TSZ22111・15・001
5/17
TSZ02201-0RLR0GZ10150-1-2
11.Dec.2015 Rev.001
5 Page 
BU2507FV BU2508FV
Typical Performance Curves(reference data) - continued
6
5
4
code=1FFh
3
2
1
0
-40
code=000h
code=3FFh
10
Temp. [°C]
60
Figure 10. ICC vs Temp
(Circuit current temperature characteristic)
2.52
2.51
TA=25°C
TA=-30°C
2.5
TA=85°C
2.49
2.48
-2.5 -1.5 -0.5 0.5
1.5 2.5
IOUT [mA]
Figure 11. VOUT vs IOUT
(Output load fluctuation characteristic(input code: 1FFh))
40
35
TA=85°C
30
25 TA=25°C
20 TA=-30°C
15
10
4 4.2 4.4 4.6 4.8 5 5.2 5.4 5.6 5.8 6
VIN [V]
Figure 12. RUP vs VIN
(Built-in Pull-up resistance characteristic)
www.rohm.co.jp
© 2015 ROHM Co., Ltd. All rights reserved.
TSZ22111・15・001
11/17
TSZ02201-0RLR0GZ10150-1-2
11.Dec.2015 Rev.001
11 Page | ||
| Páginas | Total 21 Páginas | |
| PDF Descargar | [ Datasheet BU2508FV.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| BU2508FV | 10bit 4ch/6ch D/A Converters | ROHM Semiconductor |
| Número de pieza | Descripción | Fabricantes |
| SLA6805M | High Voltage 3 phase Motor Driver IC. |
 Sanken |
| SDC1742 | 12- and 14-Bit Hybrid Synchro / Resolver-to-Digital Converters. |
 Analog Devices |
|
DataSheet.es es una pagina web que funciona como un repositorio de manuales o hoja de datos de muchos de los productos más populares, |
| DataSheet.es | 2020 | Privacy Policy | Contacto | Buscar |