MCP4152-103E/P Microchip Technology, MCP4152-103E/P Datasheet - Page 60
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MCP4152-103E/P
Manufacturer Part Number
MCP4152-103E/P
Description
IC POT DGTL SNGL 10K RHEO 8DIP
Manufacturer
Microchip Technology
Specifications of MCP4152-103E/P
Package / Case
8-DIP (0.300", 7.62mm)
Taps
257
Resistance (ohms)
10K
Number Of Circuits
1
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
Through Hole
Resistance In Ohms
10K
Number Of Pots
Single
Taps Per Pot
256
Resistance
10 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
Through Hole
Supply Voltage (max)
5.5 V
Supply Voltage (min)
1.8 V
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Lead Free Status / RoHS Status
Lead free / RoHS Compliant, Lead free / RoHS Compliant
MCP413X/415X/423X/425X
8.2
The circuit in
TC1240A doubling charge pump. When the SHDN pin
is high, the TC1240A is off, and the level on the CS pin
is controlled by the PIC® microcontrollers (MCUs) IO2
pin.
When the SHDN pin is low, the TC1240A is on and the
V
pin to go higher than the voltage such that the PIC
MCU’s IO2 pin “clamps” at approximately V
FIGURE 8-3:
generate the V
The circuit in
MCP402X Non-volatile Digital Potentiometer Evalua-
tion Board (Part Number: MCP402XEV). This method
requires that the system voltage be approximately 5V.
This ensures that when the PIC10F206 enters a
brown-out condition, there is an insufficient voltage
level on the CS pin to change the stored value of the
wiper. The MCP402X Non-volatile Digital Potentiome-
ter Evaluation Board User’s Guide (DS51546) contains
a complete schematic.
GP0 is a general purpose I/O pin, while GP2 can either
be a general purpose I/O pin or it can output the internal
clock.
For the serial commands, configure the GP2 pin as an
input (high impedance). The output state of the GP0 pin
will determine the voltage on the CS pin (V
For high-voltage serial commands, force the GP0
output pin to output a high level (V
GP2 pin to output the internal clock. This will form a
charge pump and increase the voltage on the CS pin
(when the system voltage is approximately 5V).
DS22060A-page 60
OUT
PIC MCU
voltage is 2 * V
Techniques to force the CS pin to
V
IO1
IO2
IHH
Figure 8-4
Figure 8-3
IHH
voltage.
DD
R
Using the TC1240A to
. The resistor R
1
shows the method used on the
SHDN
V
TC1240A
IN
shows a method using the
V
OUT
C
OH
C+
2
C-
) and configure the
CS
1
allows the CS
MCP402X
IL
DD
or V
.
C
1
IH
).
FIGURE 8-4:
Digital Potentiometer Evaluation Board
(MCP402XEV) implementation to generate the
V
8.3
Figure 8-5
the independent terminals could be used. Disconnect-
ing the wiper allows the transistor input to be taken to
the Bias voltage level (disconnecting A and or B may be
desired to reduce system current). Disconnecting Ter-
minal A modifies the transistor input by the R
stat value to the Common B. Disconnecting Terminal B
modifies the transistor input by the R
to the Common A. The Common A and Common B
connections could be connected to V
FIGURE 8-5:
using Terminal Disconnects.
IHH
Input
PIC10F206
Input
voltage.
Using Shutdown Modes
GP0
GP2
shows a possible application circuit where
Balance
B
A
C
Common A
1
Common B
MCP4XXX Non-Volatile
Example Application Circuit
© 2007 Microchip Technology Inc.
W
R
Bias
1
AW
DD
To base
of Transistor
(or Amplifier)
C
rheostat value
2
and V
CS
MCP4XXX
BW
SS
.
rheo-