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AD5253 Datasheet(PDF) 12 Page - Analog Devices

Part # AD5253
Description  Quad 64-/256-Position IC Nonvolatile Memory Digital Potentiometers
PDF  32 Pages
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Manufacturer  AD [Analog Devices]
Direct Link  http://www.analog.com
Logo AD - Analog Devices

AD5253 Datasheet(HTML) 12 Page - Analog Devices

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AD5253/AD5254
Data Sheet
Rev. C | Page 12 of 32
–60
–48
–24
–12
0
–36
–54
–30
–18
–6
–42
1k
10k
10
100
100k
1M
10M
FREQUENCY (Hz)
0xFF
0x80
0x40
0x20
0x10
0x08
0x04
0x02
0x01
0x00
Figure 15. Gain vs. Frequency vs. Code, RAB = 50 kΩ, TA = 25°C
–60
–48
–24
–12
0
–36
–54
–30
–18
–6
–42
1k
10k
10
100
100k
1M
10M
FREQUENCY (Hz)
0xFF
0x80
0x40
0x20
0x10
0x08
0x04
0x02
0x01
0x00
Figure 16. Gain vs. Frequency vs. Code, RAB = 100 kΩ, TA = 25°C
CODE (Decimal)
–100
–80
–60
–40
–20
0
20
40
60
80
100
0
32
64
96
128
160
192
224
256
100k
10k
50k
VDD = 5.5V
1k
Figure 17. ΔRAB vs. Code, TA = 25°C
CLOCK FREQUENCY (Hz)
0
0.6
0.4
0.2
0.8
1.0
1.2
1
100
10
1k
10k
100k
1M
10M
VDD = 2.7V
TA = 25°C
VDD = 5.5V
Figure 18. Supply Current vs. Digital Input Clock Frequency
DIGITAL FEEDTHROUGH
CLK
VDD = 5V
VW
MIDSCALE TRANSITION
7FH
 80H
400ns/DIV
Figure 19. Clock Feedthrough and Midscale Transition Glitch
VWB0
(0xFF
STORED
IN EEMEM)
VWB3
(0xFF
STORED
IN EEMEM)
VDD = VA0 = VA3 = 3.3V
GND = VB0 = VB3
MIDSCALE
PRESET
RESTORE RDAC0
SETTING TO 0xFF
RESTORE RDAC3
SETTING TO 0xFF
VDD
(NO DE-
COUPLING
CAPS)
MIDSCALE
PRESET
Figure 20. tEEMEM_RESTORE of RDAC0 and RDAC3



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