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AD5254BRU1 Scheda tecnica(PDF) 9 Page - Analog Devices

Il numero della parte AD5254BRU1
Spiegazioni elettronici  Quad 64-/256-Position I2C Nonvolatile Memory Digital Potentiometers
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Produttore elettronici  AD [Analog Devices]
Homepage  http://www.analog.com
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Data Sheet
AD5253/AD5254
Rev. C | Page 9 of 32
PIN CONFIGURATION AND FUNCTION DESCRIPTIONS
AD5253/
AD5254
TOP VIEW
(Not to Scale)
W0
1
B0
2
A0
3
AD0
4
5
W1
6
B1
7
A1
8
SDA
9
VSS 10
VDD
W3
B3
A3
AD1
20
19
18
17
16
DGND
SCL
W2
B2
A2
15
14
13
12
11
WP
Figure 2. Pin Configuration
Table 5. Pin Function Descriptions
Pin No.
Mnemonic
Description
1
W0
Wiper Terminal of RDAC0. V
SS ≤ VW0 ≤ VDD.
2
B0
B Terminal of RDAC0. V
SS ≤ VB0 ≤ VDD.
3
A0
A Terminal of RDAC0. V
SS ≤ VA0 ≤ VDD.
4
AD0
I2C Device Address 0. AD0 and AD1 allow four AD5253/AD5254 devices to be addressed.
5
WP
Write Protect, Active Low. V
WP ≤ VDD + 0.3 V.
6
W1
Wiper Terminal of RDAC1. V
SS ≤ VW1 ≤ VDD.
7
B1
B Terminal of RDAC1. V
SS ≤ VB1 ≤ VDD.
8
A1
A Terminal of RDAC1. V
SS ≤ VA1 ≤ VDD.
9
SDA
Serial Data Input/Output Pin. Shifts in one bit at a time upon positive clock edges. MSB loaded first. Open-drain
MOSFET requires pull-up resistor.
10
V
SS
Negative Supply. Connect to 0 V for single supply or –2.7 V for dual supply, where V
DD – VSS ≤ +5.5 V. If VSS is used
rather than grounded in dual supply, V
SS must be able to sink 35 mA for 26 ms when storing data to EEMEM.
11
A2
A Terminal of RDAC2. V
SS ≤ VA2 ≤ VDD.
12
B2
B Terminal of RDAC2. V
SS ≤ VB2 ≤ VDD.
13
W2
Wiper Terminal of RDAC2. V
SS ≤ VW2 ≤ VDD.
14
SCL
Serial Input Register Clock Pin. Shifts in one bit at a time upon positive clock edges. V
SCL ≤ (VDD + 0.3 V). Pull-up
resistor is recommended for SCL to ensure minimum power.
15
DGND
Digital Ground. Connect to system analog ground at a single point.
16
AD1
I2C Device Address 1. AD0 and AD1 allow four AD5253/AD5254 devices to be addressed.
17
A3
A Terminal of RDAC3. V
SS ≤ VA3 ≤ VDD.
18
B3
B Terminal of RDAC3. V
SS ≤ VB3 ≤ VDD.
19
W3
Wiper Terminal of RDAC3. V
SS ≤ VW3 ≤ VDD.
20
V
DD
Positive Power Supply Pin. Connect +2.7 V to +5 V for single supply or ±2.7 V for dual supply, where V
DD – VSS ≤ +5.5 V.
V
DD must be able to source 35 mA for 26 ms when storing data to EEMEM.


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