MCP4021T-502E/SN Microchip Technology, MCP4021T-502E/SN Datasheet - Page 40

• Manufacturer Part Number: MCP4021T-502E/SN
• Description: IC DGTL POT 5K 1CH 8SOIC
• Manufacturer: Microchip Technology

Specifications of MCP4021T-502E/SN

• Memory Type: Non-Volatile
• Taps: 64
• Resistance (ohms): 5K
• Number Of Circuits: 1
• Temperature Coefficient: 150 ppm/°C Typical
• Interface: Up/Down
• Voltage - Supply: 2.7 V ~ 5.5 V
• Operating Temperature: -40°C ~ 125°C
• Mounting Type: Surface Mount
• Package / Case: 8-SOIC (3.9mm Width)
• Resistance In Ohms: 5K
• End To End Resistance: 5kohm
• Resistance Tolerance: ± 20%
• No. Of Steps: 64
• Supply Voltage Range: 2.7V To 5.5V
• Control Interface: 2 Wire, Serial
• No. Of Pots: Single
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: MCP4XXXDM-DB - BOARD DAUGHTER DIGIPOT MCP4XXXMCP402XEV - BOARD EVAL FOR MCP402X
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant

MCP4021/2/3/4
6.0
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 MCP402X
resistors.
FIGURE 6-1:
DS21945C-page 40
R
R
R
R
Note 1: The wiper resistance is tap dependent.
S
S
S
S
RESISTOR
B
A
N = 63
N = 62
N = 61
N = 1
N = 0
That is, each tap selection resistance
has a small variation. This variation
effects the smaller resistance devices
(2.1 k ) more.
R
R
R
R
R
W
W
W
W
W
Resistor Block Diagram.
(1)
(1)
(1)
(1)
(1)
3Eh
3Fh
3Dh
01h
00h
Analog
Mux
W
Step resistance (R
ting to the next. This value will be dependent on the
R
typical step resistances for each device.
The total resistance of the device has minimal variation
due to operating voltage (see Figure 2-6, Figure 2-17,
Figure 2-27 or Figure 2-37).
TABLE 6-1:
Terminal A and B, as well as the wiper W, do not have
a polarity. These terminals can support both positive
and negative current.
MCP402X-203E
MCP402X-503E
MCP402X-104E
MCP402X-504E
AB
Part Number
value that has been selected. Table 6-1 shows the
TYPICAL STEP RESISTANCES
S
) is the resistance from one tap set-
© 2005 Microchip Technology Inc.
Total (R
Typical Resistance ( )
10000
50000
2100
5000
AB
)
Step (R
158.73
793.65
33.33
79.37
S
)