MCP4131 MICROCHIP [Microchip Technology], MCP4131 Datasheet
MCP4131
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MCP413X/415X/423X/425X 7/8-Bit Single/Dual SPI Digital POT with Volatile Memory Features • Single or Dual Resistor Network options • Potentiometer or Rheostat configuration options • Resistor Network Resolution - 7-bit: 128 Resistors (129 Steps) - 8-bit: 256 Resistors (257 Steps) • ...
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... Device Block Diagram SCK SDI SDO NC SHDN For Dual Potentiometer Devices Only Memory (4x9) Wiper0 Wiper1 TCON STATUS Device Features Wiper Device Configuration (3) (1) MCP4131 1 Potentiometer (3) MCP4132 1 Rheostat (1) MCP4141 1 Potentiometer MCP4142 1 Rheostat (3) (1) MCP4151 1 Potentiometer (3) MCP4152 1 Rheostat (1) MCP4161 1 Potentiometer MCP4162 ...
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ELECTRICAL CHARACTERISTICS Absolute Maximum Ratings † Voltage on V with respect to V ............... -0.6V to +7. Voltage on CS, SCK, SDI, SDI/SDO, and SHDN with respect ...................................... Voltage on all other pins (PxA, ...
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MCP413X/415X/423X/425X AC/DC CHARACTERISTICS Standard Operating Conditions (unless otherwise specified) Operating Temperature DC Characteristics All parameters apply across the specified operating ranges unless noted. V Typical specifications represent values for V Parameters Sym Supply Voltage V DD CS, SDI, SDO, V ...
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AC/DC CHARACTERISTICS (CONTINUED) Standard Operating Conditions (unless otherwise specified) Operating Temperature DC Characteristics All parameters apply across the specified operating ranges unless noted. V Typical specifications represent values for V Parameters Sym Resistance R AB (± 20%) Resolution N Step ...
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MCP413X/415X/423X/425X AC/DC CHARACTERISTICS (CONTINUED) Standard Operating Conditions (unless otherwise specified) Operating Temperature DC Characteristics All parameters apply across the specified operating ranges unless noted. V Typical specifications represent values for V Parameters Sym Full-Scale Error V WFSE (MCP4XX1 only) (8-bit ...
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AC/DC CHARACTERISTICS (CONTINUED) Standard Operating Conditions (unless otherwise specified) Operating Temperature DC Characteristics All parameters apply across the specified operating ranges unless noted. V Typical specifications represent values for V Parameters Sym Rheostat Integral R-INL Non-linearity MCP41X1 (Note 4, Note ...
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MCP413X/415X/423X/425X AC/DC CHARACTERISTICS (CONTINUED) Standard Operating Conditions (unless otherwise specified) Operating Temperature DC Characteristics All parameters apply across the specified operating ranges unless noted. V Typical specifications represent values for V Parameters Sym Rheostat R-DNL Differential Non-linearity MCP41X1 (Note 4, ...
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AC/DC CHARACTERISTICS (CONTINUED) Standard Operating Conditions (unless otherwise specified) Operating Temperature DC Characteristics All parameters apply across the specified operating ranges unless noted. V Typical specifications represent values for V Parameters Sym Digital Inputs/Outputs (CS, SDI, SDO, SCK, SHDN) Schmitt ...
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MCP413X/415X/423X/425X AC/DC CHARACTERISTICS (CONTINUED) Standard Operating Conditions (unless otherwise specified) Operating Temperature DC Characteristics All parameters apply across the specified operating ranges unless noted. V Typical specifications represent values for V Parameters Sym Power Requirements Power Supply PSS Sensitivity (MCP41X2 ...
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SPI Mode Timing Waveforms and Requirements SCK 71 80 SDO SDI MSb IN 73 FIGURE 1-1: SPI Timing Waveform (Mode = 11). TABLE 1-1: SPI REQUIREMENTS (MODE = 11) # Characteristic SCK Input Frequency 70 ...
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MCP413X/415X/423X/425X SCK 71 MSb SDO 73 SDI MSb IN 74 FIGURE 1-2: SPI Timing Waveform (Mode = 00). TABLE 1-2: SPI REQUIREMENTS (MODE = 00) # Characteristic SCK Input Frequency 70 CS Active (V or ...
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TABLE 1-3: SPI REQUIREMENTS FOR SDI/SDO MULTIPLEXED (READ OPERATION ONLY) Characteristic SCK Input Frequency CS Active ( SCK↑ input IL IHH SCK input high time SCK input low time Setup time of SDI input to SCK↑ ...
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MCP413X/415X/423X/425X TEMPERATURE CHARACTERISTICS Electrical Specifications: Unless otherwise indicated, V Parameters Temperature Ranges Specified Temperature Range Operating Temperature Range Storage Temperature Range Thermal Package Resistances Thermal Resistance, 8L-DFN (3x3) Thermal Resistance, 8L-MSOP Thermal Resistance, 8L-PDIP Thermal Resistance, 8L-SOIC Thermal Resistance, 10L-DFN ...
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TYPICAL PERFORMANCE CURVES Note: The graphs and tables provided following this note are a statistical summary based on a limited number of samples and are provided for informational purposes only. The performance characteristics listed herein are not tested or ...
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MCP413X/415X/423X/425X Note: Unless otherwise indicated +25° 120 -40C Rw 25C Rw 85C Rw 125C Rw -40C INL 25C INL 85C INL 125C INL -40C DNL 25C DNL 85C DNL 125C DNL 100 INL DNL 80 60 ...
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Note: Unless otherwise indicated +25° 5300 5250 5200 5150 5.5V 5100 1.8V 5050 - Ambient Temperature (°C) Ω FIGURE 2-11 – Nominal Resistance Ω vs. Ambient Temperature and V © ...
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MCP413X/415X/423X/425X Note: Unless otherwise indicated +25° Ω FIGURE 2-13 – Low-Voltage Decrement Wiper Settling Time (V (1 µs/Div). Ω FIGURE 2-14 – Low-Voltage Decrement Wiper Settling Time (V (1 µs/Div). Ω FIGURE ...
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Note: Unless otherwise indicated +25° 120 -40C Rw 25C Rw 85C Rw -40C INL 25C INL 85C INL -40C DNL 25C DNL 85C DNL 100 INL DNL -40°C 25° 125°C 85°C ...
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MCP413X/415X/423X/425X Note: Unless otherwise indicated +25° 10300 10250 10200 10150 10100 2.7V 10050 10000 5.5V 9950 1.8V 9900 9850 - Ambient Temperature (°C) Ω FIGURE 2-24 – Nominal Resistance Ω ...
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Note: Unless otherwise indicated +25° Ω FIGURE 2-26 – Low-Voltage Decrement Wiper Settling Time (V (1 µs/Div). Ω FIGURE 2-27 – Low-Voltage Decrement Wiper Settling Time (V (1 µs/Div). © 2008 Microchip ...
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MCP413X/415X/423X/425X Note: Unless otherwise indicated +25° 120 -40C Rw 25C Rw 85C Rw 125C Rw -40C INL 25C INL 85C INL 125C INL -40C DNL 25C DNL 85C DNL 125C DNL 100 INL DNL 80 60 ...
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Note: Unless otherwise indicated +25° 52500 52000 51500 1.8V 51000 50500 50000 2.7V 49500 5.5V 49000 - Ambient Temperature (°C) Ω FIGURE 2-36 – Nominal Resistance Ω vs. Ambient Temperature ...
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MCP413X/415X/423X/425X Note: Unless otherwise indicated +25° Ω FIGURE 2-38 – Low-Voltage Decrement Wiper Settling Time (V (1 µs/Div). Ω FIGURE 2-39 – Low-Voltage Decrement Wiper Settling Time (V (1 µs/Div). DS22060B-page 24 ...
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Note: Unless otherwise indicated +25° 120 -40C Rw 25C Rw 85C Rw -40C INL 25C INL 85C INL -40C DNL 25C DNL 85C DNL 100 INL DNL -40°C 25° 125°C 85°C ...
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MCP413X/415X/423X/425X Note: Unless otherwise indicated +25° 103500 103000 102500 102000 101500 1.8V 101000 100500 100000 2.7V 99500 99000 5.5V 98500 - Ambient Temperature (°C) Ω FIGURE 2-48: 100 k – Nominal Ω Resistance ( ...
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Note: Unless otherwise indicated +25° Ω FIGURE 2-50: 100 k – Low-Voltage Decrement Wiper Settling Time (V (1 µs/Div). Ω FIGURE 2-51: 100 k – Low-Voltage Decrement Wiper Settling Time (V (1 µs/Div). © 2008 Microchip ...
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MCP413X/415X/423X/425X Note: Unless otherwise indicated +25° 0.1 0.09 0.08 0.07 5.5V 0.06 0.05 0.04 0.03 3.0V 0.02 0. Temperature (°C) FIGURE 2-54: Resistor Network 0 to Ω Resistor Network 1 R ...
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Note: Unless otherwise indicated +25° 2.4 2.2 5.5V 2 1.8 1.6 1.4 2.7V 1 Temperature (°C) FIGURE 2-58: V (SDI, SCK, CS, and IH SHDN) vs. V and Temperature. DD 1.4 1.3 ...
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MCP413X/415X/423X/425X Note: Unless otherwise indicated +25° 1.2 1 0.8 0.6 0.4 0 Temperature (°C) FIGURE 2-62: POR/BOR Trip point vs. V and Temperature. 15.0 14.5 ...
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PIN DESCRIPTIONS The descriptions of the pins are listed in Additional descriptions of the device pins follows. TABLE 3-1: PINOUT DESCRIPTION FOR THE MCP413X/415X/423X/425X Pin Single Dual (1) Rheo Pot Rheo Pot 8L 8L 10L 14L 16L 1 1 ...
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MCP413X/415X/423X/425X 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 ...
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FUNCTIONAL OVERVIEW This Data Sheet covers a family of thirty-two Digital Potentiometer and Rheostat devices that will be referred to as MCP4XXX. The MCP4XX1 devices are the Potentiometer configuration, while the MCP4XX2 devices are the Rheostat configuration. As the ...
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MCP413X/415X/423X/425X 4.2.1.1 Status (STATUS) Register This register contains 5 status bits. These bits show the state of the Shutdown bit. The STATUS register can be accessed via the READ commands. describes each STATUS register bit. REGISTER 4-1: STATUS REGISTER R-1 ...
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Terminal Control (TCON) Register This register contains 8 control bits. Four bits are for Wiper 0, and four bits are for Wiper 1. describes each bit of the TCON register. The state of each resistor network terminal connection is ...
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MCP413X/415X/423X/425X (1, 2) REGISTER 4-2: TCON BITS R-1 R/W-1 R/W-1 D8 R1HW R1A bit 8 Legend Readable bit W = Writable bit -n = Value at POR ‘1’ = Bit is set bit 8 D8: Reserved. Forced to ...
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RESISTOR NETWORK The Resistor Network has either 7-bit or 8-bit resolution. Each Resistor Network allows zero scale to full-scale connections. Figure 5-1 shows a block diagram for the resistive network of a device. The Resistor Network is made up ...
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MCP413X/415X/423X/425X 5.2 Wiper Each tap point (between the R S connection point for an analog switch. The opposite side of the analog switch is connected to a common signal which is connected to the Terminal W (Wiper) pin. A value ...
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Shutdown Shutdown is used to minimize the device’s current consumption. The MCP4XXX has two methods to achieve this. These are: • Hardware Shutdown Pin (SHDN) • Terminal Control Register (TCON) The Hardware Shutdown pin is backwards compatible with the ...
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MCP413X/415X/423X/425X NOTES: DS22060B-page 40 © 2008 Microchip Technology Inc. ...
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SERIAL INTERFACE (SPI) The MCP4XXX devices support the SPI serial protocol. This SPI operates in the slave mode (does not generate the serial clock). The SPI interface uses up to four pins. These are: • Chip Select ...
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MCP413X/415X/423X/425X 6.1 SDI, SDO, SCK, and CS Operation The operation of the four SPI interface pins are discussed in this section. These pins are: • SDI (Serial Data In) • SDO (Serial Data Out) • SCK (Serial Clock) • CS ...
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SERIAL CLOCK (SCK) (SPI FREQUENCY OF OPERATION) The SPI interface is specified to operate MHz. The actual clock rate depends on the configuration of the system and the serial command used. shows the SCK frequency for ...
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MCP413X/415X/423X/425X 6.2 The SPI Modes The SPI module supports two (of the four) standard SPI modes. These are Mode 0,0 and 1,1. The mode is determined by the state of the SDI pin on the rising edge of the 1st ...
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V V IHH SCK Write to SSPBUF SDO AD3 AD2 AD1 AD0 SDI bit15 bit14 bit13 bit12 Input Sample Note 1: The SDI pin will read the state of the SDI pin which will be ...
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MCP413X/415X/423X/425X ( IHH SCK Write to SSPBUF SDO bit7 SDI AD3 bit7 Input Sample Note supported for compability with the MCP414X/6X and MCP424X/6X devices high voltage IHH operation. FIGURE 6-7: 8-Bit ...
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DEVICE COMMANDS The MCP4XXX’s SPI command format supports 16 memory address locations and four commands. Each command has two modes. These are: • Normal Serial Commands • High-Voltage Serial Commands Normal serial commands are those where the CS pin ...
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MCP413X/415X/423X/425X TABLE 7-2: MEMORY MAP AND THE SUPPORTED COMMANDS Address Command Value Function 00h Volatile Wiper 0 Write Data Read Data Increment Wiper Decrement Wiper 01h Volatile Wiper 1 Write Data Read Data Increment Wiper Decrement Wiper 02h Reserved — ...
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Data Byte Only the Read Command and the Write Command use the Data Byte, see Figure 7-1. These commands concatenate the 8-bits of the Data Byte with the one data bit (D8) contained in the Command Byte to form ...
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MCP413X/415X/423X/425X 7.4 Continuous Commands The device supports the ability to execute commands continuously. While the CS pin is in the active state ( Any sequence of valid commands may be IL IHH received. The following example is ...
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Write Data Normal and High Voltage Note: The High Voltage Write Data command is supported for compatability with system that also support MCP414X/416X/424X/ 426X devices. The Write command is a 16-bit command. The format of the command is shown ...
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MCP413X/415X/423X/425X 7.5.2 CONTINUOUS WRITES Continuous writes are possible only when writing to the volatile memory registers (address 00h, 01h, and 04h). Figure 7-3 shows the sequence for three continuous writes. The writes do not need the same ...
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Read Data Normal and High Voltage Note: The High Voltage Read Data command is supported for compatability with system that also support MCP414X/416X/424X/ 426X devices. The Read command is a 16-bit command. The format of the command is shown ...
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MCP413X/415X/423X/425X 7.6.2 CONTINUOUS READS Continuous reads allows the devices memory to be read quickly. Continuous reads are possible to all memory locations. COMMAND BYTE SDI SDO A A ...
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Increment Wiper Normal and High Voltage Note: The High Voltage Increment command is supported for compatability with system that also support MCP414X/ 416X/424X/426X devices. The Increment Command is an 8-bit command. The Increment Command can only be issued to ...
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MCP413X/415X/423X/425X 7.7.2 CONTINUOUS INCREMENTS Continuous Increments are possible only when writing to the wiper registers. Figure 7-7 shows a Continuous Increment sequence for three continuous writes. The writes do not need the same volatile memory address. When ...
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Decrement Wiper Normal and High Voltage Note: The High Voltage Decrement Wiper command is supported for compatability with system that also support MCP414X/ 416X/424X/426X devices. The Decrement Command is an 8-bit command. The Decrement Command can only be issued ...
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MCP413X/415X/423X/425X 7.8.2 CONTINUOUS DECREMENTS Continuous Decrements are possible only when writing to the wiper registers. Figure 7-9 shows a continuous Decrement sequence for three continuous writes. The writes do not need the same volatile memory address. When ...
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APPLICATIONS EXAMPLES Digital potentiometers have a multitude of practical uses in modern electronic circuits. The most popular uses include precision calibration of set point thresh- olds, sensor trimming, LCD bias trimming, audio atten- uation, adjustable power supplies, motor control ...
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MCP413X/415X/423X/425X 8.2 Techniques to force the CS pin to V IHH The circuit in Figure 8-3 shows a method using the TC1240A doubling charge pump. When the SHDN pin is high, the TC1240A is off, and the level on the ...
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Design Considerations In the design of a system with the MCP4XXX devices, the following considerations should be taken into account: • Power Supply Considerations • Layout Considerations 8.4.1 POWER SUPPLY CONSIDERATIONS The typical application will require a bypass capacitor ...
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MCP413X/415X/423X/425X NOTES: DS22060B-page 62 © 2008 Microchip Technology Inc. ...
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DEVELOPMENT SUPPORT 9.1 Development Tools Several development tools are available to assist in your design and evaluation of the MCP4XXX devices. The currently available tools are shown in These boards may be purchased directly from the Microchip web site ...
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MCP413X/415X/423X/425X NOTES: DS22060B-page 64 © 2008 Microchip Technology Inc. ...
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... DFN (3x3) Part Number MCP4131-502E/MF XXXX MCP4131-103E/MF YYWW MCP4131-104E/MF NNN MCP4131-503E/MF MCP4151-502E/MF MCP4151-103E/MF MCP4151-104E/MF MCP4151-503E/MF 8-Lead MSOP Part Number MCP4131-502E/MS XXXXXX MCP4131-103E/MS YWWNNN MCP4131-104E/MS MCP4131-503E/MS MCP4151-502E/MS MCP4151-103E/MS MCP4151-104E/MS MCP4151-503E/MS 8-Lead PDIP XXXXXXXX XXXXXNNN YYWW 8-Lead SOIC XXXXXXXX XXXXYYWW NNN Legend: XX...X ...
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MCP413X/415X/423X/425X Package Marking Information (Continued) 10-Lead DFN (3x3) Part Number XXXX MCP4232-502E/MF YYWW NNN MCP4232-103E/MF MCP4232-104E/MF MCP4232-503E/MF 10-Lead MSOP Part Number XXXXXX MCP4232-502E/MS YWWNNN MCP4232-103E/MS MCP4232-104E/MS MCP4232-503E/MS 14-Lead PDIP XXXXXXXXXXXXXX XXXXXXXXXXXXXX YYWWNNN 14-Lead SOIC (.150”) XXXXXXXXXXX XXXXXXXXXXX YYWWNNN 14-Lead TSSOP ...
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Microchip Technology Inc. MCP413X/415X/423X/425X DS22060B-page 67 ...
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MCP413X/415X/423X/425X DS22060B-page 68 © 2008 Microchip Technology Inc. ...
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Microchip Technology Inc. MCP413X/415X/423X/425X DS22060B-page 69 ...
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MCP413X/415X/423X/425X DS22060B-page 70 I © 2008 Microchip Technology Inc. φ ...
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Microchip Technology Inc. MCP413X/415X/423X/425X α φ β DS22060B-page 71 ...
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Microchip Technology Inc. MCP413X/415X/423X/425X DS22060B-page 73 ...
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Microchip Technology Inc. MCP413X/415X/423X/425X φ α β DS22060B-page 77 ...
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Microchip Technology Inc. MCP413X/415X/423X/425X I φ DS22060B-page 79 ...
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Microchip Technology Inc. MCP413X/415X/423X/425X DS22060B-page 81 ...
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MCP413X/415X/423X/425X NOTES: DS22060B-page 82 © 2008 Microchip Technology Inc. ...
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APPENDIX A: REVISION HISTORY Revision B (December 2008) The following is the list of modifications: 1. Updated I specifications to specify test PU conditions and new limit. 2. Updated DFN package in “Package Types (top view)”, including Exposed Thermal Pad ...
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MCP413X/415X/423X/425X NOTES: DS22060B-page 84 © 2008 Microchip Technology Inc. ...
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... Plastic Small Outline (SOIC), (150 mil), 14-lead ST = Plastic Thin Shrink Small Outline (TSSOP), 14-lead UN = Plastic Micro Small Outline (MSOP), 10-lead © 2008 Microchip Technology Inc. MCP413X/415X/423X/425X Examples: X /XX a) MCP4131-502E/XX: b) MCP4131T-502E/XX: T/R, 5 kΩ, 8LD Device Package c) MCP4131-103E/XX: d) MCP4131T-103E/XX: T/R, 10 kΩ, 8LD Device e) MCP4131-503E/XX: f) MCP4131T-503E/XX: T/R, 50 kΩ, 8LD Device g) ...
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MCP413X/415X/423X/425X NOTES: DS22060B-page 86 © 2008 Microchip Technology Inc. ...
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Note the following details of the code protection feature on Microchip devices: • Microchip products meet the specification contained in their particular Microchip Data Sheet. • Microchip believes that its family of products is one of the most secure families ...
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