MCP4351-103E/ST

Manufacturer Part NumberMCP4351-103E/ST
DescriptionIC DGTL POT QUAD 10K 20TSSOP
ManufacturerMicrochip Technology
MCP4351-103E/ST datasheet
 


Specifications of MCP4351-103E/ST

Taps257Resistance (ohms)10K
Number Of Circuits4Temperature Coefficient150 ppm/°C Typical
Memory TypeVolatileInterfaceSPI Serial
Voltage - Supply1.8 V ~ 5.5 VOperating Temperature-40°C ~ 125°C
Mounting TypeSurface MountPackage / Case20-TSSOP
Resistance In Ohms10KLead Free Status / RoHS StatusLead free / RoHS Compliant
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MCP433X/435X
3.1
Chip Select (CS)
The CS pin is the serial interface’s chip select input.
Forcing the CS pin to V
enables the serial commands.
IL
Forcing the CS pin to V
enables the high-voltage
IHH
serial commands.
3.2
Serial Clock (SCK)
The SCK pin is the serial interface's Serial Clock pin.
This pin is connected to the host controllers SCK pin.
The MCP43XX is an SPI slave device, so it’s SCK pin
is an input only pin.
3.3
Serial Data In (SDI)
The SDI pin is the serial interfaces Serial Data In pin.
This pin is connected to the host controllers SDO pin.
3.4
Ground (V
)
SS
The V
pin is the device ground reference.
SS
3.5
Potentiometer Terminal B
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
and V
SS
MCP43XX devices have four terminal B pins, one for
each resistor network.
3.6
Potentiometer Wiper (W) Terminal
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
.
DD
MCP43XX devices have four terminal W pins, one for
each resistor network.
DS22242A-page 38
3.7
Potentiometer Terminal A
The terminal A pin is available on the MCP43X1
devices,
and
potentiometer’s terminal A.
The potentiometer’s terminal A is the fixed connection
to the full scale wiper value of the digital 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 MCP43X2
devices, and the internally terminal A signal is floating.
MCP43X1 devices have four terminal A pins, one for
each resistor network.
3.8
Not Connected (NC)
The NC pin is not used.
3.9
Reset (RESET)
The RESET pin is used to force the device into the
POR/BOR state.
3.10
Serial Data Out (SDO)
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.
DD
3.11
Positive Power Supply Input (V
The V
pin is the device’s positive power supply input.
DD
The input power supply is relative to V
While the devices V
electrical performance of the device may not meet the
data sheet specifications.
3.12
Exposed Pad (EP)
and
This pad is conductively connected to the device's
SS
substrate. This pad should be tied to the same potential
as the V
pin (or left unconnected). This pad could be
SS
used to assist as a heat sink for the device when
connected to a PCB heat sink.
is
connected
to
the
internal
and V
.
SS
DD
)
DD
.
SS
is less than V
(2.7V), the
DD
min
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