MCP4151-502E/MS Microchip Technology, MCP4151-502E/MS Datasheet - Page 32
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MCP4151-502E/MS
Manufacturer Part Number
MCP4151-502E/MS
Description
IC POT DGTL SNGL 5K SPI 8MSOP
Manufacturer
Microchip Technology
Specifications of MCP4151-502E/MS
Package / Case
8-MSOP, Micro8™, 8-uMAX, 8-uSOP,
Taps
257
Resistance (ohms)
5K
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
Surface Mount
Resistance In Ohms
5K
Number Of Pots
Single
Taps Per Pot
256
Resistance
5 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
MCP413X/415X/423X/425X
3.1
The CS pin is the serial interface’s chip select input.
Forcing the CS pin to V
Forcing the CS pin to V
serial commands.
3.2
The SDI pin is the serial interfaces Serial Data In pin.
This pin is connected to the Host Controllers SDO pin.
3.3
On the MCP41X1 devices, pin-out limitations do not
allow for individual SDI and SDO pins. On these
devices, the SDI and SDO pins are multiplexed.
The MCP41X1 serial interface knows when the pin
needs to change from being an input (SDI) to being an
output (SDO). The Host Controller’s SDO pin must be
properly protected from a drive conflict.
3.4
The V
3.5
The terminal B pin is connected to the internal potenti-
ometer’s terminal B.
The potentiometer’s terminal B is the fixed connection
to the Zero Scale wiper value of the digital potentiome-
ter. This corresponds to a wiper value of 0x00 for both
7-bit and 8-bit devices.
The terminal B pin does not have a polarity relative to
the terminal W or A pins. The terminal B pin can
support both positive and negative current. The voltage
on terminal B must be between V
MCP42XX devices have two terminal B pins, one for
each resistor network.
3.6
The terminal W pin is connected to the internal potenti-
ometer’s terminal W (the wiper). The wiper terminal is
the adjustable terminal of the digital potentiometer. The
terminal W pin does not have a polarity relative to
terminals A or B pins. The terminal W pin can support
both positive and negative current. The voltage on
terminal W must be between V
MCP42XX devices have two terminal W pins, one for
each resistor network.
DS22060A-page 32
SS
Chip Select (CS)
Serial Data In (SDI)
Serial Data In / Serial Data Out
(SDI/SDO)
Ground (V
pin is the device ground reference.
Potentiometer Terminal B
Potentiometer Wiper (W) Terminal
SS
IL
enables the serial commands.
IHH
)
enables the high-voltage
SS
SS
and V
and V
DD
DD
.
.
3.7
The terminal A pin is available on the MCP4XX1
devices, and is connected to the internal potentiome-
ter’s terminal A.
The potentiometer’s terminal A is the fixed connection
to the Full Scale wiper value of the digital potentiome-
ter. This corresponds to a wiper value of 0x100 for 8-bit
devices or 0x80 for 7-bit devices.
The terminal A pin does not have a polarity relative to
the terminal W or B pins. The terminal A pin can
support both positive and negative current. The voltage
on terminal A must be between V
The terminal A pin is not available on the MCP4XX2
devices, and the internally terminal A signal is floating.
MCP42X1 devices have two terminal A pins, one for
each resistor network.
3.8
The SHDN pin is used to force the resistor network
terminals into the hardware shutdown state.
3.9
The SDO pin is the serial interfaces Serial Data Out pin.
This pin is connected to the Host Controllers SDI pin.
This pin allows the Host Controller to read the digital
potentiometers registers, or monitor the state of the
command error bit.
3.10
The V
The input power supply is relative to V
While the device V
performance of the device may not meet the data sheet
specifications.
3.11
Those pins should be either connected to V
DD
Potentiometer Terminal A
Shutdown (SHDN)
Serial Data Out (SDO)
Positive Power Supply Input (V
pin is the device’s positive power supply input.
No Connection
DD
© 2007 Microchip Technology Inc.
< V
min
(2.7V), the electrical
SS
and V
SS
.
DD
DD
.
or V
DD
SS
)
.