AD5170 Analog Devices, AD5170 Datasheet - Page 17

• Manufacturer Part Number: AD5170
• Description: 256-Position Two-Time Programmable I2C Digital Potentiometer
• Manufacturer: Analog Devices

Figure 42. Parallel Port Connection. Pin 2 = SDA_write, Pin 3 = SCL,
Pin 15 = SDA_read, and Pin 25 = DGND.
13
25
12
24
11
23
10
22
9
21
8
20
7
19
6
18
5
17
4
16
3
15
2
14
1
100Ω
100Ω
100Ω
R3
R2
R1
WRITE
READ
SCL
SDA
Rev. 0 | Page 17 of 24
Figure 43. Recommended AD5170 PCB Layout. The SCL and SDA pads allow
pogo pins to be inserted so that signals can be communicated through the
parallel port for programming (Figure 42).
GND
VDD
AD0
B
A
AD5170
W
NC
AD1
SDA
SCL
AD5170