MCP4161-502E/SN Microchip Technology, MCP4161-502E/SN Datasheet - Page 28

• Manufacturer Part Number: MCP4161-502E/SN
• Description: IC POT DGTL SNGL 5K SPI 8SOIC
• Manufacturer: Microchip Technology

Specifications of MCP4161-502E/SN

• Package / Case: 8-SOIC (3.9mm Width)
• Taps: 257
• Resistance (ohms): 5K
• Number Of Circuits: 1
• Temperature Coefficient: 150 ppm/°C Typical
• Memory Type: Non-Volatile
• Interface: SPI Serial
• Voltage - Supply: 2.7 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: Non Volatile
• Digital Interface: Serial (4-Wire, SPI)
• Operating Supply Voltage: 2.5 V, 3.3 V, 5 V
• Supply Current: 550 uA
• 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
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant

MCP414X/416X/424X/426X
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.
DS22059B-page 28
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
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 WP pin is used to force the non-volatile memory to
be write protected.
3.9
The SHDN pin is used to force the resistor network
terminals into the hardware shutdown state.
3.10
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.
3.11
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.
3.12
Those pins should be either connected to V
3.13
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.
DD
SS
Potentiometer Terminal A
Write Protect (WP)
Serial Data Out (SDO)
Positive Power Supply Input (V
pin is the device’s positive power supply input.
No Connection (NC)
Exposed Pad (EP)
Shutdown (SHDN)
pin (or left unconnected). This pad could be
DD
© 2008 Microchip Technology Inc.
< V
min
(2.7V), the electrical
SS
and V
SS
.
DD
DD
.
or V
DD
SS
)
.