MCP42050-E/SL Microchip Technology, MCP42050-E/SL Datasheet

IC POT DGTL 50K 2CH SPI 14SOIC

MCP42050-E/SL

Manufacturer Part Number
MCP42050-E/SL
Description
IC POT DGTL 50K 2CH SPI 14SOIC
Manufacturer
Microchip Technology
Datasheet

Specifications of MCP42050-E/SL

Temperature Coefficient
800 ppm/°C Typical
Taps
256
Resistance (ohms)
50K
Number Of Circuits
2
Memory Type
Non-Volatile
Interface
SPI, 3-Wire Serial
Voltage - Supply
2.7 V ~ 5.5 V
Operating Temperature
-40°C ~ 125°C
Mounting Type
Surface Mount
Package / Case
14-SOIC (3.9mm Width), 14-SOL
Resistance In Ohms
50K
End To End Resistance
50kohm
Track Taper
Linear
No. Of Steps
256
Supply Voltage Range
2.7V To 5.5V
Control Interface
Serial, SPI
No. Of Pots
Dual
Lead Free Status / RoHS Status
Lead free / RoHS Compliant

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
MCP42050-E/SL
Manufacturer:
MICROCHIP
Quantity:
12 000
Features
• 256 taps for each potentiometer
• Potentiometer values for 10 k , 50 k and
• Single and dual versions
• SPI™ serial interface (mode 0,0 and 1,1)
• ±1 LSB max INL & DNL
• Low power CMOS technology
• 1 µA maximum supply current in static operation
• Multiple devices can be daisy-chained together
• Shutdown feature open circuits of all resistors for
• Hardware shutdown pin available on MCP42XXX
• Single supply operation (2.7V - 5.5V)
• Industrial temperature range: -40°C to +85°C
• Extended temperature range: -40°C to +125°C
Block Diagram
M
100 k
(MCP42XXX only)
maximum power savings
only
2003 Microchip Technology Inc.
SCK
*Potentiometer P1 is only available on the dual
V
V
MCP42XXX version.
CS
SI
DD
SS
Single/Dual Digital Potentiometer with SPI
Register
Control
16-Bit
Logic
Shift
S0
Register
Register
Wiper
Wiper
RS
Resistor
SHDN
Array 1*
Resistor
Array 0
PA0
PW0
PB0
PA1
PW1
PB1
MCP41XXX/42XXX
Description
The MCP41XXX and MCP42XXX devices are 256-
position, digital potentiometers available in 10 k ,
50 k
MCP41XXX is a single-channel device and is offered in
an 8-pin PDIP or SOIC package. The MCP42XXX con-
tains two independent channels in a 14-pin PDIP, SOIC
or TSSOP package. The wiper position of the
MCP41XXX/42XXX varies linearly and is controlled via
an industry-standard SPI interface. The devices con-
sume <1 µA during static operation. A software shut-
down feature is provided that disconnects the “A”
terminal from the resistor stack and simultaneously con-
nects the wiper to the “B” terminal. In addition, the dual
MCP42XXX has a SHDN pin that performs the same
function in hardware. During shutdown mode, the con-
tents of the wiper register can be changed and the
potentiometer returns from shutdown to the new value.
The wiper is reset to the mid-scale position (80h) upon
power-up. The RS (reset) pin implements a hardware
reset and also returns the wiper to mid-scale. The
MCP42XXX SPI interface includes both the SI and SO
pins, allowing daisy-chaining of multiple devices. Chan-
nel-to-channel resistance matching on the MCP42XXX
varies by less than 1%. These devices operate from a
single 2.7 - 5.5V supply and are specified over the
extended and industrial temperature ranges.
Package Types
PDIP/SOIC
PDIP/SOIC/TSSOP
and
PW1
SCK
PB1
PA1
SCK
V
CS
V
CS
100 k
SI
SS
SI
SS
1
2
3
4
5
6
7
1
2
3
4
resistance
14
13
12
10
11
9
8
Interface
8
7
6
5
V
SO
SHDN
RS
PB0
PW0
PA0
V
PB0
PW0
PA0
DD
DD
DS11195C-page 1
versions.
The

Related parts for MCP42050-E/SL

MCP42050-E/SL Summary of contents

Page 1

... Register Array 1* SI Shift Register SCK S0 *Potentiometer P1 is only available on the dual MCP42XXX version. 2003 Microchip Technology Inc. MCP41XXX/42XXX Description The MCP41XXX and MCP42XXX devices are 256- position, digital potentiometers available and 100 k MCP41XXX is a single-channel device and is offered in an 8-pin PDIP or SOIC package. The MCP42XXX con- tains two independent channels in a 14-pin PDIP, SOIC or TSSOP package ...

Page 2

... 2.1 mA -400 µ includes V SHDN 5.0V +25° MHz 5.5V MHz SCK SO = Open, Code FFh (Note 6) CS, SHDN 5.5V Open (Note 4.5V - 5.5V 4.5V, Code 80h 2.7V - 3.3V 2.7V, Code 80h µA for and V = 0V. DNL 2003 Microchip Technology Inc. ...

Page 3

... W Conditions T = +25°C (Note 1) A Note 2 Note 5.5V mA, code 00h 2.7V mA, code 00h DD W MCP42050 only P1;T = +25°C A Note 3 Note 3 Code FFh 5V, see Figure 2-25 DD Code FFh 3V, see Figure 2-25 DD Code 00h 5V, see Figure 2-25 DD Code 00h 3V, see Figure 2-25 DD Note 4 ...

Page 4

... 2.1 mA -400 µ includes V SHDN 5.0V +25° MHz 5.5V MHz SCK SO = Open, Code FFh (Note 6) CS, SHDN 5.5V Open (Note 4.5V - 5.5V 4.5V, Code 80h 2.7V - 3.3V 2.7V, Code 80h µA for and V = 0V. DNL 2003 Microchip Technology Inc. ...

Page 5

... Applies only to the MCP42XXX devices. 3: Applies only when using hardware pins to exit software shutdown mode, MCP42XXX only. 2003 Microchip Technology Inc. MCP41XXX/42XXX † Notice: Stresses above those listed under “maximum rat- ings” may cause permanent damage to the device. This is a +1.0V ...

Page 6

... OUT FIGURE 1-2: Reset Timing. t CSL CS RS SHDN FIGURE 1-3: Software Shutdown Exit Timing. DS11195C-page 6 1/F CLK Code 80h is latched on rising edge RSCS ±1% ±1% Error Band CSH t CHS t CS1 ±1% S ±1% Error Band 2003 Microchip Technology Inc. ...

Page 7

... MCP41010, MCP42010 ( -40 -25 -10 192 224 256 FIGURE 2-4: vs. Temperature -40°C to +85° 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°C, ...

Page 8

... Code = FFh 110 125 Temperature (°C) Active Supply Current vs. = 5.5V, Code = AAh DD = 3.3V, Code = AAh DD = 5.5V, Code = FFh DD = 3.3V, Code = FFh 10k 100k 1M 10M Clock Frequency (Hz) Active Supply Current vs 5. & SHDN Pin Voltage (V) Reset & Shutdown Pins 2003 Microchip Technology Inc. ...

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 Wiper Resistance ( ) FIGURE 2-14 100 k Device Wiper Resistance Histogram. ...

Page 10

... Code = 20h -18 Code = 10h -24 Code = 08h -30 Code = 04h -36 Code = 02h -42 -48 Code = 01h C = 30pF, Refer to Figure 2-29 -54 L MCP41050, MCP42050 (50k potentiometers) -60 100 1k 10k 100k Frequency (Hz) FIGURE 2-19: Gain vs. Frequency for 50k Potentiometer. 6 Code = FFh 0 Code = 80h -6 Code = 40h -12 Code = 20h ...

Page 11

... Resistor Position Non- Linearity Error Test Circuit (Rheostat operation DNL, INL). Rsw = 0.1V A Code = 00h W DUT FIGURE 2-27: Wiper Resistance Test Circuit. 2003 Microchip Technology Inc. MCP41XXX/42XXX MEAS - PSRR (dB) = 20LOG PSS (%/%) = V *Assume infinite input impedance FIGURE 2-28: Test Circuit (PSS, PSRR ...

Page 12

... Wiper Connection For Pot 1 7 PA1 Terminal A Connection For Pot 1 8 PA0 Terminal A Connection For Pot 0 9 PW0 Wiper Connection For Pot 0 10 PB0 Terminal B Connection For Pot Reset Input 12 SHDN Shutdown Input 13 SO Data Out for Daisy-Chaining 14 V Power DD 2003 Microchip Technology Inc. ...

Page 13

... V DD 0.1 uF µC Data Lines 2003 Microchip Technology Inc. MCP41XXX/42XXX power-up, all data registers will automatically be loaded with the mid-scale value (80h). The serial interface pro- vides the means for loading data into the shift register, which is then transferred to the data registers. The ...

Page 14

... MCP4XXXX Three terminal or voltage resistor to the R resistor WB AB 2003 Microchip Technology Inc. ...

Page 15

... FIGURE 4-5: Single-supply, programmable, non-inverting gain amplifier. 2003 Microchip Technology Inc. MCP41XXX/42XXX In order for these circuits to work properly, care must be taken in a few areas. For linear operation, the analog input and output signals must be in the range for the potentiometer and input and output rails of DD the op-amp ...

Page 16

... Note: All values shown are typical and actual results will vary. FIGURE 4-10: calculations 256 D – ------------------------------------------- - + 256 --------------------------- - + 256 or 100 k ) Potentiometer resistances Example Code = C0h = 192d PB R 256 D – ------------------------------------------- - + 256 10k 256 192 – = -------------------------------------------------- - + 52 256 = 2552 --------------------------- - + 256 10k 192 = ---------------------------------- - + 52 256 = 7552 Example Resistance 2003 Microchip Technology Inc. ...

Page 17

... A ‘1’ for either will cause the data to be written to the respective data register and a ‘0’ for will cause no change. See Figure 5-2 for the command format summary. 2003 Microchip Technology Inc. MCP41XXX/42XXX 5.3 Using The Shutdown Command ...

Page 18

... Data Registers are loaded on rising edge of CS. Shift register is loaded with zeros at this time. SO pin will always drive low when CS goes high. X Potentiometer Selections Dummy Code: Neither Potentiometer affected. Command executed on Potentiometer 0. Command executed on Potentiometer 1. Command executed on both Potentiometers. 2003 Microchip Technology Inc. ...

Page 19

... The serial data out pin (SO) is only available on the MCP42XXX device. FIGURE 5-3: Timing Diagram for Daisy-Chain Configuration. 2003 Microchip Technology Inc. MCP41XXX/42XXX When using the daisy-chain configuration, keep in mind that the shift register of each device is automatically loaded with zeros whenever a command is executed (CS = high) ...

Page 20

... After 32 clocks, Device 2 has the data previously loaded into Device 1 and Device 3 gets 16 more zeros. Device 3 00000000 00000000 After 48 clocks, all 3 devices have the proper command/ data loaded into their shift registers. Device 3 XX10XX00 10101010 2003 Microchip Technology Inc. ...

Page 21

... Power-up Considerations When the device is powered on, the data registers will be set to mid-scale (80h). A power-on reset circuit is utilized to ensure that the device powers up in this known state. 2003 Microchip Technology Inc. MCP41XXX/42XXX TABLE 5-1: TRUTH TABLE FOR LOGIC INPUTS SCK CS ...

Page 22

... SCK DATA BYTE Channel Select New Register Data Bits Bits X P1 Data Registers are loaded on rising edge of CS. Shift register is loaded with zeros at this time pin will always drive low when CS goes high. X 2003 Microchip Technology Inc. ...

Page 23

... Standard marking consists of Microchip part number, year code, week code, facility code, mask rev#, and assembly code. 2003 Microchip Technology Inc. MCP41XXX/42XXX Example: MCP41010 I/P256 0313 ...

Page 24

... MILLIMETERS MIN NOM MAX 8 2.54 3.56 3.94 4.32 2.92 3.30 3.68 0.38 7.62 7.94 8.26 6.10 6.35 6.60 9.14 9.46 9.78 3.18 3.30 3.43 0.20 0.29 0.38 1.14 1.46 1.78 0.36 0.46 0.56 7.87 9.40 10. 2003 Microchip Technology Inc. ...

Page 25

... Mold Draft Angle Top Mold Draft Angle Bottom * Controlling Parameter § Significant Characteristic Notes: Dimensions D and E1 do not include mold flash or protrusions. Mold flash or protrusions shall not exceed .010” (0.254mm) per side. JEDEC Equivalent: MS-012 Drawing No. C04-057 2003 Microchip Technology Inc. MCP41XXX/42XXX ...

Page 26

... MILLIMETERS MIN NOM MAX 14 2.54 3.56 3.94 4.32 2.92 3.30 3.68 0.38 7.62 7.94 8.26 6.10 6.35 6.60 18.80 19.05 19.30 3.18 3.30 3.43 0.20 0.29 0.38 1.14 1.46 1.78 0.36 0.46 0.56 7.87 9.40 10. 2003 Microchip Technology Inc. ...

Page 27

... Mold Draft Angle Top Mold Draft Angle Bottom * Controlling Parameter § Significant Characteristic Notes: Dimensions D and E1 do not include mold flash or protrusions. Mold flash or protrusions shall not exceed .010” (0.254mm) per side. JEDEC Equivalent: MS-012 Drawing No. C04-065 2003 Microchip Technology Inc. MCP41XXX/42XXX ...

Page 28

... B .007 .010 .012 MILLIMETERS* MIN NOM MAX 14 0.65 1.10 0.85 0.90 0.95 0.05 0.10 0.15 6.25 6.38 6.50 4.30 4.40 4.50 4.90 5.00 5.10 0.50 0.60 0. 0.09 0.15 0.20 0.19 0.25 0. 2003 Microchip Technology Inc. ...

Page 29

... MCP42010T-I/ST: Tape and Reel, I-Temp., 14LD TSSOP pkg. e) MCP42050-E/P: E-Temp., 14LD PDIP pkg. f) MCP42050T-I/SL: Tape and Reel, I-Temp., 14LD SOIC pkg. g) MCP42050-E/SL: E-Temp., 14LD SOIC pkg. h) MCP42050-I/ST: I-Temp., 14LD TSSOP pkg. i) MCP42050T-I/SL: Tape and Reel, I-Temp., 14LD SOIC pkg. j) MCP42050T-I/ST: Tape and Reel, I-Temp., 14LD TSSOP pkg ...

Page 30

... MCP41XXX/42XXX NOTES: DS11195C-page 30 2003 Microchip Technology Inc. ...

Page 31

... Serialized Quick Turn Programming (SQTP service mark of Microchip Technology Incorporated in the U.S.A. All other trademarks mentioned herein are property of their respective companies. © 2003, Microchip Technology Incorporated, Printed in the U.S.A., All Rights Reserved. Printed on recycled paper. Microchip received QS-9000 quality system ...

Page 32

... Italy Via Quasimodo, 12 20025 Legnano (MI) Milan, Italy Tel: 39-0331-742611 Fax: 39-0331-466781 Netherlands Biesbosch 14 NL-5152 SC Drunen, Netherlands Tel: 31-416-690399 Fax: 31-416-690340 United Kingdom 505 Eskdale Road Winnersh Triangle Wokingham Berkshire, England RG41 5TU Tel: 44-118-921-5869 Fax: 44-118-921-5820 07/28/03 2003 Microchip Technology Inc. ...

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