MCP41100 MICROCHIP [Microchip Technology], MCP41100 Datasheet
MCP41100
Available stocks
Related parts for MCP41100
MCP41100 Summary of contents
Page 1
M Single/Dual Digital Potentiometer with SPI Features • 256 taps for each potentiometer • Potentiometer values for and 100 k • Single and dual versions • SPI™ serial interface (mode 0,0 and 1,1) • ±1 ...
Page 2
MCP41XXX/42XXX 1.0 ELECTRICAL CHARACTERISTICS DC CHARACTERISTICS VERSION Electrical Characteristics: Unless otherwise indicated, V +85°C). Typical specifications represent values for V Parameters Sym Rheostat Mode Nominal Resistance R Rheostat Differential Non Linearity R-DNL Rheostat Integral Non Linearity R-INL Rheostat ...
Page 3
DC CHARACTERISTICS VERSION Electrical Characteristics: Unless otherwise indicated, V +85°C). Typical specifications represent values for V Parameters Sym Rheostat Mode Nominal Resistance R Rheostat Differential Non-Linearity R-DNL Rheostat Integral Non-Linearity R-INL Rheostat Tempco R AB Wiper Resistance R ...
Page 4
MCP41XXX/42XXX DC CHARACTERISTICS: 100 k VERSION Electrical Characteristics: Unless otherwise indicated, V +85°C). Typical specifications represent values for V Parameters Sym Rheostat Mode Nominal Resistance R Rheostat Differential Non-Linearity R-DNL Rheostat Integral Non-Linearity R-INL Rheostat Tempco R AB Wiper Resistance ...
Page 5
Absolute Maximum Ratings † V ...................................................................................7.0V DD All inputs and outputs w.r.t. V ............... -0. Storage temperature .....................................-60°C to +150°C Ambient temp. with power applied ................-60°C to +125°C ESD protection on all pins AC TIMING CHARACTERISTICS Electrical ...
Page 6
MCP41XXX/42XXX CS t CSSR t CSO SCK msb in (First 16 bits out are always zeros OUT FIGURE 1-1: Detailed Serial interface Timing. Wiper position is changed to mid-scale (80h ...
Page 7
... MCP41050, MCP42050 (50 k potentiometers) 0 -40 -25 -10 FIGURE 2-5: vs. Temperature. 140 = -40°C to +85° 120 100 MCP41100, MCP42100 (100 k potentiometers) 0 -40 -25 -10 192 224 256 FIGURE 2-6: vs. Temperature +25° Code = 80h potentiometers 110 125 Temperature (° ...
Page 8
MCP41XXX/42XXX Note: Unless otherwise indicated, curve represents and 100 k devices 0V. B 0.5 Refer to Figure 2-27 0.4 0.3 0 +25°C A -0.1 -0 ...
Page 9
... Wiper Resistance ( ) FIGURE 2-13 Device Wiper Resistance Histogram. 140 MCP41050, MCP41100, MCP42050, MCP42100 120 Code = 00h, Sample Size = 796 100 115 117 119 121 123 125 127 129 131 133 ...
Page 10
... Code = 40h -12 Code = 20h -18 Code = 10h -24 Code = 08h -30 Code = 04h -36 Code = 02h -42 Code = 01h - 30pF, Refer to Figure 2-29 -54 L MCP41100, MCP42100 (100k potentiometers) -60 10k 100 1k Frequency (Hz) FIGURE 2-20: Gain vs. Frequency for 100k Potentiometer 145 kHz -12 279 kHz -18 -24 - pF, Code = 80h ...
Page 11
Parametric Test Circuits 1LSB = V+/256 DUT *Assume infinite input impedance FIGURE 2-25: Potentiometer Divider Non- Linearity Error Test Circuit (DNL, INL). No Connection DUT ...
Page 12
MCP41XXX/42XXX 3.0 PIN DESCRIPTIONS 3.1 PA0, PA1 Potentiometer Terminal A Connection. 3.2 PB0, PB1 Potentiometer Terminal B Connection. 3.3 PW0, PW1 Potentiometer Wiper Connection. 3.4 Chip Select (CS) This is the SPI port chip select pin and is used to ...
Page 13
APPLICATIONS INFORMATION The MCP41XXX/42XXX devices are 256 position single and dual digital potentiometers that can be used in place of standard mechanical pots. Resistance val- ues and 100 k are available. As shown ...
Page 14
MCP41XXX/42XXX 4.1 Modes of Operation Digital potentiometer applications can be divided into two categories: rheostat mode and potentiometer, or voltage divider, mode. 4.1.1 RHEOSTAT MODE In the rheostat mode, the potentiometer is used as a two-terminal resistive element. The unused ...
Page 15
Typical Applications 4.2.1 PROGRAMMABLE SINGLE-ENDED AMPLIFIERS Potentiometers are often used to adjust system refer- ence levels or gain. Programmable gain circuits using digital potentiometers can be realized in a number of different ways. An example of a single-supply, inverting ...
Page 16
MCP41XXX/42XXX 1/2 MCP42010 (SIG -) MCP601 A (SIG +) + OUT V REF Where: R 256 D R – ...
Page 17
SERIAL INTERFACE Communications from the controller MCP41XXX/42XXX digital potentiometers is accom- plished using the SPI serial interface. This interface allows three commands: 1. Write a new value to the potentiometer data register(s). 2. Cause a channel to enter low ...
Page 18
MCP41XXX/42XXX Data is always latched in on the rising edge of SCK. CS† SCK COMMAND Byte Don’t Care Command Bits Bits First 16 bits shifted out will always be ...
Page 19
Daisy-Chain Configuration Multiple MCP42XXX devices can be connected in a daisy-chain configuration, as shown in Figure 5-4, by connecting the SO pin from one device to the SI pin on the next device. The data on the SO pin ...
Page 20
MCP41XXX/42XXX CS SCK SO Microcontroller EXAMPLE: If you want to load the following command/data into each part in the chain. XX10XX11 Start by setting CS low and clocking in the command and data that will end up in Device XX10XX00 ...
Page 21
Reset (RS) Pin Operation The Reset pin (RS) will automatically set all potentiom- eter data latches to mid-scale (Code 80h) when pulled low (provided that the pin is held low at least 150 ns and CS is high). The ...
Page 22
MCP41XXX/42XXX 5.8 Using the MCP41XXX/42XXX in SPI Mode 1 possible to operate the devices in SPI modes 0,0 and 1,1. The only difference between these two modes is that, when using mode 1,1, the clock idles in the ...
Page 23
PACKAGING INFORMATION 6.1 Package Marking Information 8-Lead PDIP (300 mil) XXXXXXXX XXXXXNNN YYWW 8-Lead SOIC (150 mil) XXXXXXXX XXXXYYWW NNN 14-Lead PDIP (300 mil) XXXXXXXXXXXXXX XXXXXXXXXXXXXX YYWWNNN 14-Lead SOIC (150 mil) XXXXXXXXXXX XXXXXXXXXXX YYWWNNN 14-Lead TSSOP (4.4mm) * XXXXXXXX ...
Page 24
MCP41XXX/42XXX 8-Lead Plastic Dual In-line (P) – 300 mil (PDIP Dimension Limits Number of Pins Pitch Top to Seating Plane Molded Package Thickness Base to Seating Plane Shoulder to Shoulder Width Molded Package Width Overall Length ...
Page 25
Plastic Small Outline (SN) – Narrow, 150 mil (SOIC Dimension Limits Number of Pins Pitch Overall Height Molded Package Thickness Standoff § Overall Width Molded Package Width Overall Length Chamfer Distance Foot ...
Page 26
MCP41XXX/42XXX 14-Lead Plastic Dual In-line (P) – 300 mil (PDIP Dimension Limits Number of Pins Pitch Top to Seating Plane Molded Package Thickness Base to Seating Plane Shoulder to Shoulder Width Molded Package Width ...
Page 27
Plastic Small Outline (SL) – Narrow, 150 mil (SOIC Dimension Limits Number of Pins Pitch Overall Height Molded Package Thickness Standoff § Overall Width Molded Package Width Overall Length Chamfer Distance Foot ...
Page 28
MCP41XXX/42XXX 14-Lead Plastic Thin Shrink Small Outline (ST) – 4.4 mm (TSSOP Dimension Limits Number of Pins Pitch Overall Height Molded Package Thickness Standoff § Overall Width Molded Package Width Molded Package Length Foot ...
Page 29
... MCP41010T: Single Digital Potentiometer ( (Tape and Reel) MCP41050: Single Digital Potentiometer ( (Tape and Reel) MCP41050T: Single Digital Potentiometer ( MCP41100: Single Digital Potentiometer (100 k ) (Tape and Reel) MCP41100T: Single Digital Potentiometer (100 k ) MCP42010: Dual Digital Potentiometer ( MCP42010T: Dual Digital Potentiometer ( ...
Page 30
MCP41XXX/42XXX NOTES: DS11195C-page 30 2003 Microchip Technology Inc. ...
Page 31
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 ...
Page 32
M W ORLDWIDE AMERICAS Corporate Office 2355 West Chandler Blvd. Chandler, AZ 85224-6199 Tel: 480-792-7200 Fax: 480-792-7277 Technical Support: 480-792-7627 Web Address: http://www.microchip.com Atlanta 3780 Mansell Road, Suite 130 Alpharetta, GA 30022 Tel: 770-640-0034 Fax: 770-640-0307 Boston 2 Lan Drive, ...
Page 33
... This datasheet has been download from: www.datasheetcatalog.com Datasheets for electronics components. ...