MCP4151 Dual SPI Digital POT Guide
2024-11-27 642

The MCP4151 is a sophisticated digital potentiometer, that utilizes an SPI interface to improve both connectivity and ease of control. This device is equipped with an 8-bit resistor network, adaptable for use in both potentiometer and rheostat pin arrangements. This article aims to clarify the intricacies of the MCP4151, offering an in-depth exploration of its distinct characteristics and technical specifications.

Catalog

MCP4151 Pin Configuration

MCP4151 CAD Representation

Description of MCP4151

The MCP41XX series, the MCP4151 model, provides remarkable flexibility with its 7- or 8-bit resistor network arrangements. These configurations are well-suited for both potentiometer and rheostat applications, representing a shift from mechanical to digital solutions. This digital potentiometer family highlights the potential to replace traditional mechanical trim pots, catering ideally to systems aligned with CMOS voltage standards, which typically span from VDD = 2.7V to 5.5V. This evolution aligns with a wider industry movement toward enhancing precision and boosting reliability in electronic designs, while simultaneously reducing the mechanical wear typically associated with traditional components.

Characteristics of the MCP4151

• The device offers a dual resistor network option with flexible configurations as a potentiometer or rheostat. It provides an 8-bit resolution with 256 resistors (257 steps) and a resistance value of 10 kΩ for RAB.

• The wiper operates from zero scale to full scale with a low typical wiper resistance of 75Ω. Its temperature coefficient is minimal, with an absolute Tempco of 50 ppm (0°C to 70°C) in rheostat mode and a ratiometric Tempco of 15 ppm in potentiometer mode.

• Featuring a 10 MHz SPI serial interface compatible with modes 0,0 and 1,1, the device supports high-speed read and write operations to the wiper registers with SDI/SDO multiplexing. It includes a resistor network terminal disconnect feature managed via a shutdown pin (SHDN) or the Terminal Control (TCON) register.

• Additional features include brown-out reset protection at 1.5V (typical), a low serial interface inactive current of 2.5 µA, and high-voltage tolerant digital inputs up to 12.5V.

• It supports split-rail applications, incorporates internal weak pull-ups on all digital inputs, and operates across a wide voltage range of 1.8V to 5.5V. The device is designed for an extended temperature range from -40°C to +125°C, ensuring reliability in diverse environments.

Technical Specifications

The table below shows the technical specifications, attributes, and parameters of the Microchip Technology MCP4151-103E/MS .

Type	Parameter
Factory Lead Time	14 Weeks
Mount	Surface Mount
Mounting Type	Surface Mount
Package / Case	8-TSSOP, 8-MSOP (0.118, 3.00mm Width)
Number of Pins	8
Memory Types	Volatile
Operating Temperature	-40°C~125°C
Packaging	Tube
Published	2008
Tolerance	±20%
JESD-609 Code	e3
Pbfree Code	yes
Part Status	Active
Moisture Sensitivity Level (MSL)	2 (1 Year)
Number of Terminations	8
ECCN Code	EAR99
Temperature Coefficient	150 ppm/°C
Resistance	10kOhm
Number of Positions	256
Terminal Finish	Matte Tin (Sn)
Voltage - Supply	1.8V~5.5V
Terminal Position	DUAL
Terminal Form	GULL WING
Peak Reflow Temperature (Cel)	260
Number of Functions	1
Supply Voltage	5V
Terminal Pitch	0.65mm
Time@Peak Reflow Temperature-Max (s)	40
Base Part Number	MCP4151
Pin Count	8
Operating Supply Voltage	5V
Configuration	Potentiometer
Interface	SPI
Number of Circuits	1
Nominal Supply Current	1mA
Bandwidth	1 kHz
Taper	Linear
Number of Taps	257
Total Resistance	10000Ohm
Resistance - Wiper (Ω) (Typ)	75
Resistor Terminal Voltage-Max	5V
Length	3mm
Width	3mm
Radiation Hardening	No
RoHS Status	ROHS3 Compliant

Functional Block Diagram of MCP4151

Equivalents to MCP4151

Model number	Manufacturer	Description
MCP4151T103E/UN	Microchip Technology Inc	10K DIGITAL POTENTIOMETER, INCREMENT/DECREMENT CONTROL INTERFACE, 129 POSITIONS, PDSO10, PLASTIC, MSOP-10
MCP4151-103E/UN	Microchip Technology Inc	10K DIGITAL POTENTIOMETER, INCREMENT/DECREMENT CONTROL INTERFACE, 129 POSITIONS, PDSO10, PLASTIC, MSOP-10
MCP4151T-103E/P	Microchip Technology Inc	10K DIGITAL POTENTIOMETER, INCREMENT/DECREMENT CONTROL INTERFACE, 129 POSITIONS, PDIP8, 0.300 INCH, PLASTIC, DIP-8
MCP4151-103I/MS	Microchip Technology Inc	DIGITAL POTENTIOMETER, PDSO8, PLASTIC, MSOP-8
MCP4151-103I/SN	Microchip Technology Inc	DIGITAL POTENTIOMETER, PDSO8, 3.90 MM, PLASTIC, SOIC-8
MAX5450EUB-T	Maxim Integrated Products	Digital Potentiometer, 2 Func, 100000 Ohm, Increment/decrement Control Interface, 256 Positions, CMOS, PDSO10, MO-187C-BA, MICRO, SOP-10
MCP4151T-103I/MF	Microchip Technology Inc	DIGITAL POTENTIOMETER, PDSO8, 3 X 3 MM, 0.90 MM HEIGHT, PLASTIC, DFN-8
MCP4151-103E/SL	Microchip Technology Inc	10K DIGITAL POTENTIOMETER, INCREMENT/DECREMENT CONTROL INTERFACE, 129 POSITIONS, PDSO14, 3.90 MM, PLASTIC, SOIC-14
MCP4151T-103E/SL	Microchip Technology Inc	10K DIGITAL POTENTIOMETER, INCREMENT/DECREMENT CONTROL INTERFACE, 129 POSITIONS, PDSO14, 3.90 MM, PLASTIC, SOIC-14
MCP4151T-103E/ML	Microchip Technology Inc	10K DIGITAL POTENTIOMETER, INCREMENT/DECREMENT CONTROL INTERFACE, 129 POSITIONS, PQCC16, 4 X 4 MM, 0.90 MM HEIGHT, PLASTIC, QFN-16

Components with Comparable Specifications

Part Number	MCP4151-103E/MS	MCP4551-103E/MS	MCP4151T-103E/MS	MCP4552-103E/MS
Manufacturer	Microchip Technology	Microchip Technology	Microchip Technology	Microchip Technology
Package / Case	8-TSSOP, 8-MSOP (0.118", 3.00mm Width)	8-TSSOP, 8-MSOP (0.118", 3.00mm Width)	8-TSSOP, 8-MSOP (0.118", 3.00mm Width)	8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
Number of Pins	8	8	8	8
Resistance	10 kΩ	10 kΩ	10 kΩ	10 kΩ
Number of Taps	257	257	257	257
Tolerance	±20%	±20%	±20%	±20%
Temperature Coefficient	150 ppm/°C	150 ppm/°C	150 ppm/°C	150 ppm/°C
Memory Type	Volatile	Volatile	Volatile	Volatile
Interface	SPI	I2C	SPI	I2C

Dimensions of MCP4151

Marking Information of MCP4151

Manufacturer of MCP4151

Microchip Technology, headquartered in Chandler, Arizona, is a leader in the field of microcontroller and analog semiconductor solutions. Celebrated for empowering cost-effective and reliable product development, the company takes pride in providing notable technical support alongside high-quality products. Within the semiconductor industry, a company's capability to offer strong support often matches the importance of its technology—a sphere in which Microchip Technology excels.

Datasheet PDF

MCP4151-103E/MS Datasheets

MCP4151-103E/MS.pdf
MCP4151-103E/MS Details PDF
MCP4151-103E/MS PDF - DE.pdf

MCP4551-103E/MS Datasheets

MCP4551-103E/MS.pdf
MCP4551-103E/MS Details PDF
MCP4551-103E/MS PDF - DE.pdf
MCP4551-103E/MS PDF - FR.pdf
MCP4551-103E/MS PDF - ES.pdf
MCP4551-103E/MS PDF - IT.pdf
MCP4551-103E/MS PDF - KR.pdf

MCP4151T-103E/MS.pdf Datasheets

MCP4151T-103E/MS.pdf
MCP4151T-103E/MS Details PDF
MCP4151T-103E/MS PDF - DE.pdf

MCP4552-103E/MS.pdf Datasheets

MCP4552-103E/MS.pdf
MCP4552-103E/MS Details PDF
MCP4552-103E/MS PDF - DE.pdf