MCP4151-103E/MF Microchip Technology, MCP4151-103E/MF Datasheet - Page 32

• Manufacturer Part Number: MCP4151-103E/MF
• Description: IC POT DGTL SNGL 10K SPI 8DFN
• Manufacturer: Microchip Technology

Specifications of MCP4151-103E/MF

• Package / Case: 8-DFN
• 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: Surface Mount
• 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: 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
potentiometer’s terminal B.
The potentiometer’s terminal B is the fixed connection
to the Zero Scale wiper value of the digital
potentiometer. 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
potentiometer’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
V
MCP42XX devices have two terminal W pins, one for
each resistor network.
DS22060B-page 32
DD
.
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
and V
DD
.
SS
and
3.7
The terminal A pin is available on the MCP4XX1
devices,
potentiometer’s terminal A.
The potentiometer’s terminal A is the fixed connection
to
potentiometer. 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
These pins are not internally connected and should be
either connected to V
noise coupling.
3.12
This pad is conductively connected to the device's
substrate. This pad should be tied to the same potential
as the V
used to assist as a heat sink for the device when
connected to a PCB heat sink.
the
DD
SS
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 (NC)
Exposed Pad (EP)
Full-Scale
pin (or left unconnected). This pad could be
and
is
DD
connected
wiper
DD
© 2008 Microchip Technology Inc.
< V
or V
min
value
SS
(2.7V), the electrical
SS
to reduce possible
to
and V
SS
of
.
the
DD
the
.
internal
digital
DD
)