Datasheet

ManualsBrandsTEXAS INSTRUMENTS ManualsData collecting ICsData acquisition IC - Digital potentiometer linear Non-permanent SOT 23 8

SCLK

GND

DIN

VDD

GND

VDD

DIN

SCLK

TPL0501

www.ti.com

SLIS136A –SEPTEMBER 2011– REVISED SEPTEMBER 2011

256 Taps Single Channel Digital Potentiometer With SPI Interface

Check for Samples: TPL0501

FEATURES

MicroQFN – RSE PACKAGE

• Single Channel, 256-Position Resolution

(TOP VIEW)

• 100 kΩ End-to-End Resistance Options

• Low Temperature Coefficient: 35 ppm/°C

• SPI-Compatible Serial Interface

• 2.7 V to 5.5V Single-Supply Operation

• ±20% Resistance Tolerance

• Operating Temperature –40°C to 125°C

• ESD Performance Tested per JESD 22

– 2000 V Human Body Model (A114-B, Class

II)

SOT-23 – DCN PACKAGE

APPLICATIONS

(TOP VIEW)

• Adjustable Power Supplies

• Adjustable Gain Amplifiers and Offset

Trimming

• Precision Calibration of Set Point Thresholds

• Sensor Trimming and Calibration

• Mechanical Potentiometer Replacement

DESCRIPTION

The TPL0501 is a single channel, linear-taper digital potentiometer with 256 wiper positions. This device can be

used as a three-terminal potentiometer or as a two-terminal rheostat. The TPL0501 is currently offered with

end-to-end resistance of 100kΩ.

The internal registers of the TPL0501 can be accessed using a SPI-compatible interface. The TPL0501 has a

nominal temperature coefficient of 35ppm/°C.

The TPL0501 is available in an 8-pin SOT-23 and 8-microQFN package with a specified temperature range

of –40°C to 85°C.

ORDERING INFORMATION

TA PACKAGE

(1)

ORDERABLE PART NUMBER TOP-SIDE MARKING

microQFN-RSE TPL0501-100RSER 7M

–40°C to 125°C Tape and Reel

SOT23 – DCN TPL0501-100DCNR NF5T

(1) Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines are available at

www.ti.com/sc/package.

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas

Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

PRODUCTION DATA information is current as of publication date.

Products conform to specifications per the terms of the Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.

Summary of content (21 pages)

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TPL0501 SLIS136A – SEPTEMBER 2011 – REVISED SEPTEMBER 2011 www.ti.com 256 Taps Single Channel Digital Potentiometer With SPI Interface Check for Samples: TPL0501 FEATURES 1 • • • • • • • • Single Channel, 256-Position Resolution 100 kΩ End-to-End Resistance Options Low Temperature Coefficient: 35 ppm/°C SPI-Compatible Serial Interface 2.7 V to 5.
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TPL0501 SLIS136A – SEPTEMBER 2011 – REVISED SEPTEMBER 2011 www.ti.com These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam during storage or handling to prevent electrostatic damage to the MOS gates.
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TPL0501 SLIS136A – SEPTEMBER 2011 – REVISED SEPTEMBER 2011 www.ti.com PIN FUNCTIONS PIN NUMBER NAME TYPE DESCRIPTION DCN RSE 1 6 2 7 VDD Power Positive Supply Voltage 3 4 GND Ground Ground 4 5 SCLK Input SPI Clock 5 2 DIN Input SPI Input 6 3 CS Input SPI Chip Select.
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TPL0501 SLIS136A – SEPTEMBER 2011 – REVISED SEPTEMBER 2011 www.ti.com ANALOG SPECIFICATIONS (continued) Typical Values are specified at VDD=5V and operating temperature of 25 C PARAMETER CONDITIONS MIN TCV Ratiometric temperature coefficient Wiper set at mid-scale BW Bandwidth Wiper set at mid-scale, TPL0501-100, CLOAD=10pF TSW Wiper settling time TPL0501-100 Total harmonic distortion VH = 1VRMS at 1kHz, VL = VDD/2, measurement at W THD TYP MAX 4 UNIT ppm/°C 265 kHz 3 µS 0.
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TPL0501 SLIS136A – SEPTEMBER 2011 – REVISED SEPTEMBER 2011 www.ti.com TYPICAL CHARACTERISTICS 0.15 0.15 +125C +125C +85C +85C +25C 0.10 0.10 DNL Error (LSB) 0.05 INL Error (LSB) +25C -40C 0.00 -0.05 -0.10 -40C 0.05 0.00 -0.05 -0.10 -0.15 -0.15 0 32 64 96 128 160 192 224 0 32 64 96 Digital Code 128 160 192 224 Digital Code Figure 2. INL vs TAP POSITION (Potentiometer Mode) Figure 3. DNL vs TAP POSITION (Potentiometer Mode) 0.15 0.
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TPL0501 SLIS136A – SEPTEMBER 2011 – REVISED SEPTEMBER 2011 www.ti.com TYPICAL CHARACTERISTICS (continued) 0.10 50.00 5.5V 5.5V 5.0V 5.0V 2.7V 2.7V 40.00 30.00 TC (ppm/C) FS Error (LSB) 0.00 -0.10 20.00 10.00 -0.20 0.00 -10.00 -0.30 -40 -20 0 20 40 60 80 100 16 120 80 Temperature (C) 144 208 Digital Code Figure 8. Full scale Error vs Temperature Figure 9. Temperature Coefficient vs Tap Position (Potentiometer Mode) 100.00 0.00 5.5V 0x80h 5.0V -6.00 0x40h 2.
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TPL0501 SLIS136A – SEPTEMBER 2011 – REVISED SEPTEMBER 2011 www.ti.com APPLICATION INFORMATION SPI Digital Interface The TPL0501 uses a 3-wire SPI compatible serial data interface. This write-only interface has three inputs: chip-select (CS), data clock (SCLK), and data input (DIN). Drive CS low to enable the serial interface and clock data synchronously into the shift register on each SCLK rising edge.
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TPL0501 SLIS136A – SEPTEMBER 2011 – REVISED SEPTEMBER 2011 www.ti.com IDEAL RESISTANCE VALUES H RHW RTOT W RWL RWL = RTOT x D/256 RHW = RTOT x (1 –(D/256)) Where D = Decimal Value of Wiper Code L Below table shows the ideal values for DPOT with end-to End resistance of 10kΩ. The absolute values of resistance can vary significantly but the Ratio (Rhw/Rwl) is extremely accurate. 8 Step Binary 0 10 kΩ RHW/RWL RHW (kΩ) RWL (kΩ) 0 0.00 100.00 0.00 1 1 0.39 99.61 0.00 2 10 0.78 99.
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TPL0501 SLIS136A – SEPTEMBER 2011 – REVISED SEPTEMBER 2011 www.ti.com Step Binary 33 34 10 kΩ RHW/RWL RHW (kΩ) RWL (kΩ) 100001 12.89 87.11 0.15 100010 13.28 86.72 0.15 35 100011 13.67 86.33 0.16 36 100100 14.06 85.94 0.16 37 100101 14.45 85.55 0.17 38 100110 14.84 85.16 0.17 39 100111 15.23 84.77 0.18 40 101000 15.63 84.38 0.19 41 101001 16.02 83.98 0.19 42 101010 16.41 83.59 0.20 43 101011 16.80 83.20 0.20 44 101100 17.19 82.81 0.
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TPL0501 SLIS136A – SEPTEMBER 2011 – REVISED SEPTEMBER 2011 10 Step Binary 81 82 www.ti.com 10 kΩ RHW/RWL RHW (kΩ) RWL (kΩ) 1010001 31.64 68.36 0.46 1010010 32.03 67.97 0.47 83 1010011 32.42 67.58 0.48 84 1010100 32.81 67.19 0.49 85 1010101 33.20 66.80 0.50 86 1010110 33.59 66.41 0.51 87 1010111 33.98 66.02 0.51 88 1011000 34.38 65.63 0.52 89 1011001 34.77 65.23 0.53 90 1011010 35.16 64.84 0.54 91 1011011 35.55 64.45 0.55 92 1011100 35.94 64.
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TPL0501 SLIS136A – SEPTEMBER 2011 – REVISED SEPTEMBER 2011 www.ti.com Step Binary 129 130 10 kΩ RHW/RWL RHW (kΩ) RWL (kΩ) 10000001 50.39 49.61 1.02 10000010 50.78 49.22 1.03 131 10000011 51.17 48.83 1.05 132 10000100 51.56 48.44 1.06 133 10000101 51.95 48.05 1.08 134 10000110 52.34 47.66 1.10 135 10000111 52.73 47.27 1.12 136 10001000 53.13 46.88 1.13 137 10001001 53.52 46.48 1.15 138 10001010 53.91 46.09 1.17 139 10001011 54.30 45.70 1.
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TPL0501 SLIS136A – SEPTEMBER 2011 – REVISED SEPTEMBER 2011 12 Step Binary 177 178 www.ti.com 10 kΩ RHW/RWL RHW (kΩ) RWL (kΩ) 10110001 69.14 30.86 2.24 10110010 69.53 30.47 2.28 179 10110011 69.92 30.08 2.32 180 10110100 70.31 29.69 2.37 181 10110101 70.70 29.30 2.41 182 10110110 71.09 28.91 2.46 183 10110111 71.48 28.52 2.51 184 10111000 71.88 28.13 2.56 185 10111001 72.27 27.73 2.61 186 10111010 72.66 27.34 2.66 187 10111011 73.05 26.95 2.
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TPL0501 SLIS136A – SEPTEMBER 2011 – REVISED SEPTEMBER 2011 www.ti.com Step Binary 225 226 10 kΩ RHW/RWL RHW (kΩ) RWL (kΩ) 11100001 87.89 12.11 7.26 11100010 88.28 11.72 7.53 227 11100011 88.67 11.33 7.83 228 11100100 89.06 10.94 8.14 229 11100101 89.45 10.55 8.48 230 11100110 89.84 10.16 8.85 231 11100111 90.23 9.77 9.24 232 11101000 90.63 9.38 9.67 233 11101001 91.02 8.98 10.13 234 11101010 91.41 8.59 10.64 235 11101011 91.80 8.20 11.
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PACKAGE OPTION ADDENDUM www.ti.
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PACKAGE MATERIALS INFORMATION www.ti.com 30-Apr-2012 TAPE AND REEL INFORMATION *All dimensions are nominal Device Package Package Pins Type Drawing SPQ Reel Reel A0 Diameter Width (mm) (mm) W1 (mm) TPL0501-100DCNR SOT-23 DCN 8 3000 180.0 8.4 TPL0501-100RSER UQFN RSE 8 5000 180.0 8.4 Pack Materials-Page 1 B0 (mm) K0 (mm) P1 (mm) W Pin1 (mm) Quadrant 3.23 3.17 1.37 4.0 8.0 Q3 1.6 1.6 0.66 4.0 8.
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PACKAGE MATERIALS INFORMATION www.ti.com 30-Apr-2012 *All dimensions are nominal Device Package Type Package Drawing Pins SPQ Length (mm) Width (mm) Height (mm) TPL0501-100DCNR SOT-23 DCN 8 3000 202.0 201.0 28.0 TPL0501-100RSER UQFN RSE 8 5000 202.0 201.0 28.
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IMPORTANT NOTICE Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, enhancements, improvements and other changes to its semiconductor products and services per JESD46, latest issue, and to discontinue any product or service per JESD48, latest issue. Buyers should obtain the latest relevant information before placing orders and should verify that such information is current and complete.