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AD5252 Datasheet(PDF) 18 Page - Analog Devices

Part # AD5252
Description  Dual 64-and 256-Position I2C Nonvolatile Memory Digital Potentiometers
PDF  28 Pages
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Manufacturer  AD [Analog Devices]
Direct Link  http://www.analog.com
Logo AD - Analog Devices

AD5252 Datasheet(HTML) 18 Page - Analog Devices

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AD5251/AD5252
Rev. 0 | Page 18 of 28
–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 27. AD5252 Gain vs. Frequency vs. Code, RAB = 50 kΩ
–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 28. AD5252 Gain vs. Frequency vs. Code, RAB = 100 kΩ
CODE (Decimal)
–100
–80
–60
–40
–20
0
20
40
60
80
100
0
32
64
96
128
160
192
224
256
100k
Ω
10k
Ω
50k
Ω
VDD = 5.5V
1k
Ω
Figure 29. AD5252 ∆RAB 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 30. Supply Current vs. Digital Input Clock Frequency
DIGITAL FEEDTHROUGH
CLK
VDD = 5V
VW
Figure 31. Clock Feedthrough and Midscale Transition Glitch
VWB1
(0x3F
STORED
IN EEMEM)
VWB3
(0x3F
STORED
IN EEMEM)
VDD = VA1 = VA3 = 3.3V
GND = VB1 = VB3
MIDSCALE
PRESET
RESTORE RDAC1
SETTING TO 0x3F
RESTORE RDAC3
SETTING TO 0x3F
VDD
(NO DE-
COUPLING
CAPS)
MIDSCALE
PRESET
Figure 32 .tEEMEM_RESTORE



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