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AD5204BN100 Folha de dados(PDF) 10 Page - Analog Devices

Nome de Peças AD5204BN100
Descrição Electrónicos  4-/6-Channel Digital Potentiometers
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Fabricante Electrônico  AD [Analog Devices]
Página de início  http://www.analog.com
Logo AD - Analog Devices

AD5204BN100 Folha de dados(HTML) 10 Page - Analog Devices

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AD5204/AD5206
–10–
REV. 0
RDAC 1
RDAC 2
RDAC 4/6
AD5204/AD5206
SDI
CLK
CS
ADDR
DECODE
SERIAL
REGISTER
Figure 18. Equivalent Input Control Logic
The target RDAC latch is loaded with the last eight bits of the
serial data word completing one DAC update. Four separate 8-
bit data words must be clocked in to change all four VR settings.
SERIAL
REGISTER
SDI
CK
RS
D
Q
SHDN
CS
CLK
PR
SDO
GND
Figure 19. Detail SDO Output Schematic of the AD5204
All digital pins are protected with a series input resistor and
parallel Zener ESD structure shown in Figure 20. Applies to
digital pins
CS, SDI, SDO, PR, SHDN, CLK
340k
LOGIC
VSS
Figure 20. ESD Protection of Digital Pins
A, B, W
VSS
Figure 21. ESD Protection of Resistor Terminals
V+
DUT
VMS
A
B
W
V+ = VDD
1LSB = V+/256
Figure 22. Potentiometer Divider Nonlinearity Error Test
Circuit (INL, DNL)
NO CONNECT
IW
DUT
VMS
A
B
W
Figure 23. Resistor Position Nonlinearity Error (Rheostat
Operation; R-INL, R-DNL)
IMS
VW
IW = 1V/RNOMINAL
DUT
VMS
A
B
W
V+
IW
RW = ––––––––––––––––––––––––––
VW2–[VW1 + IW (RAWII RBW)]
WHERE VW1 = VMS WHEN IW = 0
AND VW2 = VMS WHEN IW = 1/R
V+
VDD
Figure 24. Wiper Resistance Test Circuit
PSRR (dB) = 20 LOG
( ––––– )
PSS (%/%) = –––––––
VMS
VDD
VMS%
VDD%
V+ = VDD ± 10%
VDD
VA
~
V+
VMS
A
B
W
Figure 25. Power Supply Sensitivity Test Circuit (PSS,
PSRR)
AB
VIN
OP279
+5V
VOUT
DUT
W
OFFSET
GND
+
OFFSET BIAS
Figure 26. Inverting Programmable Gain Test Circuit
AB
VIN
OP279
+5V
VOUT
DUT
W
OFFSET
GND
OFFSET BIAS
Figure 27. Noninverting Programmable Gain Test Circuit
+15V
–15V
A
B
VIN
2.5V
OP42
VOUT
DUT
W
OFFSET
GND
+
Figure 28. Gain vs. Frequency Test Circuit
ISW
VSS TO VDD
RSW =
0.1V
ISW
CODE = ØØH
0.1V
DUT
B
W
+
Figure 29. Incremental ON Resistance Test Circuit


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