MCP4014-502E/CH View Datasheet(PDF) - Microchip Technology
Part Name
Description
Manufacturer
MCP4014-502E/CH Datasheet PDF : 60 Pages
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MCP4011/2/3/4
5.3 CS High Voltage
The CS pin is High-Voltage (VIHH) tolerant, like the
MCP402X. This allows the MCP401X to be used in
MCP402X applications without needing to change
other portions of the application circuit.
6.0 RESISTOR
Digital potentiometer applications can be divided into
two categories:
• Rheostat configuration
• Potentiometer (or voltage divider) configuration
Figure 6-1 shows a block diagram for the MCP401X
resistors.
A
N = 63
3Fh
RS
RW (1)
N = 62
3Eh
RS
RW (1)
N = 61
3Dh
RS
RW (1)
W
N=1
01h
RS
RW (1)
N=0
00h
B
RW (1)
Analog
Mux
Note 1: The wiper resistance is tap dependent.
That is, each tap selection resistance
has a small variation. This variation
effects the smaller resistance devices
(2.1 kΩ) more.
FIGURE 6-1:
Resistor Block Diagram.
Step resistance (RS) is the resistance from one tap
setting to the next. This value will be dependent on the
RAB value that has been selected. Table 6-1 shows the
typical step resistances for each device.
The total resistance of the device has minimal variation
due to operating voltage (see Figure 2-11, Figure 2-24,
Figure 2-36 or Figure 2-48).
TABLE 6-1: TYPICAL STEP RESISTANCES
Part Number
MCP401X-203E
MCP401X-503E
MCP401X-104E
MCP401X-504E
Typical Resistance (Ω)
Total (RAB)
2100
5000
10000
50000
Step (RS)
33.33
79.37
158.73
793.65
Terminal A and B, as well as the wiper W, do not have
a polarity. These terminals can support both positive
and negative current.
DS21978C-page 38
© 2006 Microchip Technology Inc.
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