MCP4232-503E/MF Microchip Technology, MCP4232-503E/MF Datasheet - Page 37
![IC POT DGTL DUAL 50K RHEO 10DFN](/photos/6/59/65939/10-dfn_pkg_sml.jpg)
MCP4232-503E/MF
Manufacturer Part Number
MCP4232-503E/MF
Description
IC POT DGTL DUAL 50K RHEO 10DFN
Manufacturer
Microchip Technology
Specifications of MCP4232-503E/MF
Package / Case
10-DFN
Taps
129
Resistance (ohms)
50K
Number Of Circuits
2
Temperature Coefficient
150 ppm/°C Typical
Memory Type
Volatile
Interface
SPI Serial
Voltage - Supply
1.8 V ~ 5.5 V
Operating Temperature
-40°C ~ 125°C
Mounting Type
Surface Mount
Resistance In Ohms
50K
Number Of Pots
Dual
Taps Per Pot
128
Resistance
50 KOhms
Wiper Memory
Volatile
Digital Interface
Serial (SPI)
Operating Supply Voltage
2.5 V, 3.3 V, 5 V
Supply Current
1 mA
Maximum Operating Temperature
+ 125 C
Minimum Operating Temperature
- 40 C
Mounting Style
SMD/SMT
Supply Voltage (max)
5.5 V
Supply Voltage (min)
1.8 V
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
MCP4232-503E/MF
Manufacturer:
MICROCHIP
Quantity:
12 000
5.0
The Resistor Network has either 7-bit or 8-bit resolu-
tion. Each Resistor Network allows zero scale to full
scale connections.
for the resistive network of a device.
The Resistor Network is made up of several parts.
These include:
• Resistor Ladder
• Wiper
• Shutdown (Terminal Connections)
Devices have either one or two resistor networks,
These are referred to as Pot 0 and Pot 1.
FIGURE 5-1:
© 2007 Microchip Technology Inc.
R
Note 1:
AB
R
R
R
R
S
S
S
S
A
B
RESISTOR NETWORK
The wiper resistance is dependent on
several factors including, wiper code,
device V
and W), and temperature.
Also for the same conditions, each tap
selection resistance has a small variation.
This R
some specifications (such as INL) for the
smaller
compared to larger resistance devices
(100.0 kΩ).
R
R
R
R
R
W
W
W
W
W
W
(1)
(1)
(1)
(1)
(1)
Figure 5-1
DD
variation has greater effects on
resistance
(100h)
Resistor Block Diagram.
(FFh)
(FEh)
(01h)
(00h)
, Terminal voltages (on A, B,
8-Bit
257
N =
256
255
Analog Mux
1
0
shows a block diagram
(80h)
(7Fh)
(7Eh)
(01h)
(00h)
7-Bit
128
N =
127
126
devices
1
0
(5.0 kΩ)
MCP413X/415X/423X/425X
W
5.1
The resistor ladder is a series of equal value resistors
(R
resistors. The total number of resistors in the series
(ladder)
Figure
connected to analog switches which are connected to
the device Terminal A and Terminal B pins. The R
(and R
and temperature.
For an 8-bit device, there are 256 resistors in a string
between terminal A and terminal B. The wiper can be
set to tap onto any of these 256 resistors thus providing
257 possible settings (including terminal A and terminal
B).
For a 7-bit device, there are 128 resistors in a string
between terminal A and terminal B. The wiper can be
set to tap onto any of these 128 resistors thus providing
129 possible settings (including terminal A and terminal
B).
Equation 5-1
resistance.
EQUATION 5-1:
S
) with a connection point (tap) between the two
S
5-1). The end points of the resistor ladder are
) resistance has small variations over voltage
Resistor Ladder Module
determines
R
R
S
S
=
=
shows the calculation for the step
------------- -
(
-------------
(
R
R
128
256
AB
AB
)
)
R
the
S
CALCULATION
R
8-bit Device
AB
7-bit Device
DS22060A-page 37
resistance
(see
AB