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BU2506FV-E2 Folha de dados(PDF) 5 Page - Rohm

Nome de Peças BU2506FV-E2
Descrição Electrónicos  10bit 8ch/10ch D/A Converters
Download  22 Pages
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Fabricante Electrônico  ROHM [Rohm]
Página de início  http://www.rohm.com
Logo ROHM - Rohm

BU2506FV-E2 Folha de dados(HTML) 5 Page - Rohm

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BU2505FV BU2506FV
TSZ02201-0RLR0GZ10140-1-2
© 2015 ROHM Co., Ltd. All rights reserved.
11.Dec.2015 Rev.001
www.rohm.co.jp
TSZ22111・15・001
Timing Characteristics(Unless otherwise specified, VCC=5V, VrefH=5V, VrefL=0V, TA=25°C)
Parameter
Symbol
Limits
Unit
Conditions
Min
Typ
Max
The voltage levels of the measured time
points are 20% or 80% of VCC.
Reset L pulse width
tRTL
50
-
-
ns
-
Clock L pulse width
tCKL
50
-
-
-
Clock H pulse width
tCKH
50
-
-
-
Clock rise time
tcr
-
-
50
-
Clock fall time
tcf
-
-
50
-
Data setup time
tDCH
20
-
-
-
Data hold time
tCHD
40
-
-
-
Load setup time
tCHL
50
-
-
-
Load hold time
tLDC
50
-
-
-
Load H pulse width
tLDH
50
-
-
-
Data output delay time
tDO
-
-
90
CL=100pF
D/A output settling time
tLDD
-
7
20
μs
CL≤100pF
(Note 6), VO: 0.5V↔4.5V
The time interval from the start time to
change an output voltage to the time at
which the output voltage reaches to its
final value within 1/2 LSB.
(Note 6) 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).
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 BU2505FV and the BU2506FV 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 5 and pin 6 are pulled up internally. If putting the external pull-down resister on them, the recommended value
is less than 1kΩ.
Truth Table
L
H
Pin 5: RESET
Reset
Normal
Pin 6: REVERSE
MSB first
LSB first
CLK
DI
LD
DA
OUTPUT
tCKL
tcr
tCKH
tcf
tDCH
tCHD
tCHL
tLDH
tLDC
tLDD
DO
OUTPUT
tDO
RESET
tRTL


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