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BU2508FV Folha de dados(PDF) 2 Page - Rohm

Nome de Peças BU2508FV
Descrição Electrónicos  High-precision 10bit 4ch/6ch D/A Converters
Download  9 Pages
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Fabricante Electrônico  ROHM [Rohm]
Página de início  http://www.rohm.com
Logo ROHM - Rohm

BU2508FV Folha de dados(HTML) 2 Page - Rohm

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BU2508FV,BU2507FV
Technical Note
2/8
www.rohm.com
2011.08 - Rev.C
© 2011 ROHM Co., Ltd. All rights reserved.
Electrical Characteristics (Unless otherwise specified, VCC=5V, VrefH=5V, VrefL=0V, Ta=25℃)
Parameter
Symbol
Limits
Unit
Conditions
MIN.
TYP. MAX.
<Digital unit>
Power source current
ICC
-
0.85
2.8
mA
At CLK = 10MHz, IAO = 0uA
Input leak current
IILK
-5
-
5
μA
VIN=0 to VCC
Input voltage L
VIL
-
-
0.8
V
-
Input voltage H
VIH
2.0
-
-
V
-
Output voltage L
VOL
0
-
0.4
V
IOL=2.5mA
Output voltage H
VOH
4.6
-
5
V
IOH=-2.5mA
<Analog unit>
Consumption current
IrefH
-
4.5
7.5
mA
Data condition : at maximum current
-
2.0
3.4
mA
(*1)
D/A converter upper standard voltage
setting range
VrefH
3.0
-
5
V
Outputs does not necessarily take a
value in standard voltage setting range.
Value that output may take is in the buffer
amplifier output voltage range (VO).
D/A converter lower standard voltage
setting range
VrefL
0
-
1.5
V
Buffer amplifier output voltage range
VO
0.1
-
4.9
V
IO=±100μA
0.2
-
4.75
IO=±1.0mA
Buffer amplifier output drive range
IO
-2
-
2
mA
Upper side saturation voltage =0.35V
(on full scale setting, current sourcing )
Lower side saturation voltage =0.23V
(on zero scale setting, current sinking )
Precision
Differential non-linearity error
DNL
-1.0
-
1.0
LSB
VrefH =4.796V
VrefL=0.7V
VCC=5.5V (4mV/LSB)
No load (IO = +0mA)
Integral non-linearity error
INL
-3.5
-
3.5
Zero point error
SZERO
-25
-
25
mV
Full scale error
SFULL
-25
-
25
Buffer amplifier output impedance
RO
-
5
15
-
Pull-up I/O internal resistance value
Rup
12.5
25
37.5
kΩ
Input voltage 0V
(Resistance value changes according
to voltage to be impressed.)
*1: Value in the case where CH1 ~ CH4 are set to maximum current (after reset)
Timing Characteristics (Unless otherwise specified, VCC=5V, VrefH=5V, VrefL=0V, Ta=25℃)
Parameter
Symbol
Limits
Unit
Conditions
MIN.
TYP. MAX.
Judgment level is 80% / 20% 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
-
-
-
DA output settling time
tLDD
-
7
20
μS
CL≦100pF, VO:0.5V⇔4.5V .
Until output value deference from final
value becomes 1/2LSB
(note) LD signal is level triggered. When LD input is on H level, internal shift-register state is loaded to DAC control latch.
Clock transition during LD=H is inhibited.
CLK
DI
LD
Output
tCKL
tcr
tCKH
tcf
tDCH
tCHD
tCHL
tLDH
tLDC
tLDD
RESET
tRTL


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