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AD5124 Datasheet(PDF) 14 Page - Analog Devices

Part # AD5124
Description  The AD5124/AD5144/AD5144A potentiometers provide a nonvolatile solution for 128-/256-position adjustment applications, offering guaranteed low resistor tolerance errors of 짹8% and up to 짹6 mA current density in the Ax, Bx, and Wx pins.
PDF  36 Pages
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Manufacturer  AD [Analog Devices]
Direct Link  http://www.analog.com
Logo AD - Analog Devices

AD5124 Datasheet(HTML) 14 Page - Analog Devices

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AD5124/AD5144/AD5144A
Data Sheet
Rev. A | Page 14 of 36
PIN CONFIGURATIONS AND FUNCTION DESCRIPTIONS
1
2
3
4
5
6
7
8
9
10
GND
A1
W1
W3
A3
B1
SYNC
A2
VSS
B3
20
19
18
17
16
15
14
13
12
11
SDI
SCLK
VLOGIC
W4
B4
VDD
W2
B2
A4
SDO
AD5124/
AD5144
TOP VIEW
(Not to Scale)
Figure 9. 20-Lead TSSOP, SPI Interface Pin Configuration (AD5124/AD5144)
Table 9. 20-Lead TSSOP, SPI Interface Pin Function Descriptions (AD5124/AD5144)
Pin No.
Mnemonic
Description
1
SYNC
Synchronization Data Input, Active Low. When SYNC returns high, data is loaded into the input shift register.
2
GND
Ground Pin, Logic Ground Reference.
3
A1
Terminal A of RDAC1. VSS ≤ VA ≤ VDD.
4
W1
Wiper Terminal of RDAC1. VSS ≤ VW ≤ VDD.
5
B1
Terminal B of RDAC1. VSS ≤ VB ≤ VDD.
6
A3
Terminal A of RDAC3. VSS ≤ VA ≤ VDD.
7
W3
Wiper Terminal of RDAC3. VSS ≤ VW ≤ VDD.
8
B3
Terminal B of RDAC3. VSS ≤ VB ≤ VDD.
9
VSS
Negative Power Supply. Decouple this pin with 0.1 µF ceramic capacitors and 10 µF capacitors.
10
A2
Terminal A of RDAC2. VSS ≤ VA ≤ VDD.
11
W2
Wiper Terminal of RDAC2. VSS ≤ VW ≤ VDD.
12
B2
Terminal B of RDAC2. VSS ≤ VB ≤ VDD.
13
A4
Terminal A of RDAC4. VSS ≤ VA ≤ VDD.
14
W4
Wiper Terminal of RDAC4. VSS ≤ VW ≤ VDD.
15
B4
Terminal B of RDAC4. VSS ≤ VB ≤ VDD.
16
VDD
Positive Power Supply. Decouple this pin with 0.1 µF ceramic capacitors and 10 µF capacitors.
17
VLOGIC
Logic Power Supply; 1.8 V to VDD. Decouple this pin with 0.1 µF ceramic capacitors and 10 µF capacitors.
18
SCLK
Serial Clock Line. Data is clocked in at the logic low transition.
19
SDI
Serial Data Input.
20
SDO
Serial Data Output. This is an open-drain output pin, and it needs an external pull-up resistor.



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