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AD5253_15 Datasheet, PDF (9/32 Pages) Analog Devices – Quad 64-/256-Position IC Nonvolatile Memory Digital Potentiometers
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Data Sheet
PIN CONFIGURATION AND FUNCTION DESCRIPTIONS
AD5253/AD5254
W0 1
20 VDD
B0 2 AD5253/ 19 W3
A0 3 AD5254 18 B3
AD0 4 TOP VIEW 17 A3
WP 5 (Not to Scale) 16 AD1
W1 6
15 DGND
B1 7
14 SCL
A1 8
13 W2
SDA 9
12 B2
VSS 10
11 A2
Figure 2. Pin Configuration
Table 5. Pin Function Descriptions
Pin No. Mnemonic Description
1
W0
2
B0
3
A0
4
AD0
Wiper Terminal of RDAC0. VSS ≤ VW0 ≤ VDD.
B Terminal of RDAC0. VSS ≤ VB0 ≤ VDD.
A Terminal of RDAC0. VSS ≤ VA0 ≤ VDD.
I2C Device Address 0. AD0 and AD1 allow four AD5253/AD5254 devices to be addressed.
5
WP
Write Protect, Active Low. VWP ≤ VDD + 0.3 V.
6
W1
7
B1
8
A1
9
SDA
Wiper Terminal of RDAC1. VSS ≤ VW1 ≤ VDD.
B Terminal of RDAC1. VSS ≤ VB1 ≤ VDD.
A Terminal of RDAC1. VSS ≤ VA1 ≤ VDD.
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
VSS
11
A2
12
B2
13
W2
14
SCL
Negative Supply. Connect to 0 V for single supply or –2.7 V for dual supply, where VDD – VSS ≤ +5.5 V. If VSS is used
rather than grounded in dual supply, VSS must be able to sink 35 mA for 26 ms when storing data to EEMEM.
A Terminal of RDAC2. VSS ≤ VA2 ≤ VDD.
B Terminal of RDAC2. VSS ≤ VB2 ≤ VDD.
Wiper Terminal of RDAC2. VSS ≤ VW2 ≤ VDD.
Serial Input Register Clock Pin. Shifts in one bit at a time upon positive clock edges. VSCL ≤ (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
18
B3
19
W3
20
VDD
A Terminal of RDAC3. VSS ≤ VA3 ≤ VDD.
B Terminal of RDAC3. VSS ≤ VB3 ≤ VDD.
Wiper Terminal of RDAC3. VSS ≤ VW3 ≤ VDD.
Positive Power Supply Pin. Connect +2.7 V to +5 V for single supply or ±2.7 V for dual supply, where VDD – VSS ≤ +5.5 V.
VDD must be able to source 35 mA for 26 ms when storing data to EEMEM.
Rev. C | Page 9 of 32
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