Touch Screen Controllers

Touch screen controllers are data converters which convert user actions on a screen to signals that can be read by a device. These controllers plug into sensors that communicate touch actions electronically, enabling the use of a touch screen device as an input mechanism in place of a mouse or keypad.

What are touch screen controllers used for?
Touch screen controllers are used in ATMs and point of sale equipment as well as in smart technology devices such as tablets, mobile phones, laptops and Kindles. Touch screen controllers are also standard in the manufacturing and engineering industries where display screens act as control panels for machinery and specialised equipment.

Types of touch screen controllers
Touch screen controllers come in two types: capacitive and resistive.

  • Capacitive touch screen controllers are compatible with screen panels coated with indium tin dioxide. The film coating conducts a constant electrical current across a sensor to pick up on any change in electrical charge when the screen is touched.
  • Resistive touch screen controllers produce an electrically resistive layer. The changes in resistance on this layer are identified as touch events, which are picked up by the controller for processing of data.
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Part Details Brand Conversion Rate Resolution Interface Type Sensing Technology Sensing Wire Type Package Type Pin Count Typical Operating Supply Voltage Dimensions Length Width Height Maximum Operating Temperature Minimum Operating Temperature
BU21021GUL-E2, Resistive Touch Screen Controller, 12 bit, 50-Pin VCSP50L2
  • £ 1.421
  • Each (On a Reel of 3000)
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  • RS Stock No. 185-1260
  • Brand ROHM
  • Mfr. Part No. BU21021GUL-E2
ROHM - 12 bit - Resistive - VCSP50L2 50 3 V 2.7 x 2.65 x 0.55mm 2.7mm 2.65mm 0.55mm +85 °C -20 °C
BU21021GUL-E2, Resistive Touch Screen Controller, 12 bit, 50-Pin VCSP50L2
  • RS Stock No. 185-1341
  • Brand ROHM
  • Mfr. Part No. BU21021GUL-E2
ROHM - 12 bit - Resistive - VCSP50L2 50 3 V 2.7 x 2.65 x 0.55mm 2.7mm 2.65mm 0.55mm +85 °C -20 °C
BU21024FV-ME2, Resistive Touch Screen Controller, 10 bit, 28-Pin SSOP-B
  • £ 1.579
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  • RS Stock No. 185-1261
  • Brand ROHM
  • Mfr. Part No. BU21024FV-ME2
ROHM - 10 bit - Resistive - SSOP-B 28 3 V 10.35 x 5.6 x 1.15mm 10.35mm 5.6mm 1.15mm +85 °C -40 °C
BU21024FV-ME2, Resistive Touch Screen Controller, 10 bit, 28-Pin SSOP-B
  • RS Stock No. 185-1344
  • Brand ROHM
  • Mfr. Part No. BU21024FV-ME2
ROHM - 10 bit - Resistive - SSOP-B 28 3 V 10.35 x 5.6 x 1.15mm 10.35mm 5.6mm 1.15mm +85 °C -40 °C
BU21026MUV-E2, Resistive Touch Screen Controller, 12 bit 2-Wire, 20-Pin VQFN020V4040
  • £ 0.421
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  • RS Stock No. 185-1262
  • Brand ROHM
  • Mfr. Part No. BU21026MUV-E2
ROHM - 12 bit - Resistive 2-Wire VQFN020V4040 20 3 V 4 x 4 x 1mm 4mm 4mm 1mm +85 °C -30 °C
BU21026MUV-E2, Resistive Touch Screen Controller, 12 bit 2-Wire, 20-Pin VQFN020V4040
  • RS Stock No. 185-1347
  • Brand ROHM
  • Mfr. Part No. BU21026MUV-E2
ROHM - 12 bit - Resistive 2-Wire VQFN020V4040 20 3 V 4 x 4 x 1mm 4mm 4mm 1mm +85 °C -30 °C
BU21029GUL-E2, Resistive Touch Screen Controller, 12 bit 2-Wire, 50-Pin VCSP50L2
  • £ 0.816
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  • RS Stock No. 185-1263
  • Brand ROHM
  • Mfr. Part No. BU21029GUL-E2
ROHM - 12 bit - Resistive 2-Wire VCSP50L2 50 3 V 2 x 2 x 0.55mm 2mm 2mm 0.55mm +85 °C -20 °C
BU21029GUL-E2, Resistive Touch Screen Controller, 12 bit 2-Wire, 50-Pin VCSP50L2
  • RS Stock No. 185-1351
  • Brand ROHM
  • Mfr. Part No. BU21029GUL-E2
ROHM - 12 bit - Resistive 2-Wire VCSP50L2 50 3 V 2 x 2 x 0.55mm 2mm 2mm 0.55mm +85 °C -20 °C
BU21078FV-E2, Capacitive Touch Screen Controller, 8 bit 2-Wire, 28-Pin SSOP-B
  • £ 0.684
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  • RS Stock No. 185-1264
  • Brand ROHM
  • Mfr. Part No. BU21078FV-E2
ROHM - 8 bit - Capacitive 2-Wire SSOP-B 28 3 → 5.5 V 10.35 x 5.6 x 1.15mm 10.35mm 5.6mm 1.15mm +85 °C -20 °C
BU21078FV-E2, Capacitive Touch Screen Controller, 8 bit 2-Wire, 28-Pin SSOP-B
  • RS Stock No. 185-1355
  • Brand ROHM
  • Mfr. Part No. BU21078FV-E2
ROHM - 8 bit - Capacitive 2-Wire SSOP-B 28 3 → 5.5 V 10.35 x 5.6 x 1.15mm 10.35mm 5.6mm 1.15mm +85 °C -20 °C
Cypress Semiconductor, CY8C20110-SX2I Cypress Semiconductor - - - - - - - - - - - - - -
AT42QT1010-MAHR, Touch Controller IC, 14 bit Digital Output, 8-Pin UDFN/USON Microchip Technology - 14 bit Digital Output - - UDFN/USON 8 1.8 V 2.05 x 2 x 0.55mm 2.05mm 2mm 0.55mm +85 °C -40 °C
MTCH105-I/ML, Capacitive Touch Controller IC, 16-Pin QFN Microchip Technology - - - Capacitive - QFN 16 3.6 V 4 x 4 x 0.95mm 4mm 4mm 0.95mm +85 °C -40 °C
AR1021-I/SO, Resistive Touch Screen Controller, 10 bit I2C, SPI 4-Wire, 5-Wire, 8-Wire, 20-Pin SOIC Microchip Technology - 10 bit I2C, SPI Resistive 4-Wire, 5-Wire, 8-Wire SOIC 20 - 12.8 x 7.5 x 2.35mm 12.8mm 7.5mm 2.35mm +85 °C -40 °C
AR1011-I/SO, Resistive Touch Screen Controller, 10 bit 140sps UART 4-Wire, 5-Wire, 8-Wire, 20-Pin SOIC Microchip 140sps 10 bit UART Resistive 4-Wire, 5-Wire, 8-Wire SOIC 20 2.5 → 5.25 V 12.8 x 7.5 x 2.35mm 12.8mm 7.5mm 2.35mm +85 °C -40 °C
AR1020-I/SO, Resistive Touch Screen Controller, 10 bit SPI 4-Wire, 5-Wire, 8-Wire, 20-Pin SOIC Microchip - 10 bit SPI Resistive 4-Wire, 5-Wire, 8-Wire SOIC 20 3.3 → 5 V 12.8 x 7.5 x 2.05mm 12.8mm 7.5mm 2.05mm +85 °C -40 °C
AR1021-I/SO, Resistive Touch Screen Controller, 10 bit I2C, SPI 4-Wire, 5-Wire, 8-Wire, 20-Pin SOIC Microchip Technology - 10 bit I2C, SPI Resistive 4-Wire, 5-Wire, 8-Wire SOIC 20 - 12.8 x 7.5 x 2.35mm 12.8mm 7.5mm 2.35mm +85 °C -40 °C
AR1021-I/SS, Resistive Touch Screen Controller, 10 bit 140sps SPI 4-Wire, 5-Wire, 8-Wire, 20-Pin SSOP Microchip 140sps 10 bit SPI Resistive 4-Wire, 5-Wire, 8-Wire SSOP 20 2.5 → 5 V 7.5 x 5.6 x 1.85mm 7.5mm 5.6mm 1.85mm +85 °C -40 °C
AT42QT1010-MAHR, Touch Controller IC, 14 bit Digital Output, 8-Pin UDFN/USON Microchip Technology - 14 bit Digital Output - - UDFN/USON 8 1.8 V 2.05 x 2 x 0.55mm 2.05mm 2mm 0.55mm +85 °C -40 °C
BU21029MUV-E2, Resistive Touch Controller IC, 12 bit 4-Wire, 20-Pin VQFN
  • £ 1.033
  • Each (On a Reel of 2500)
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  • RS Stock No. 178-5644
  • Brand ROHM
  • Mfr. Part No. BU21029MUV-E2
ROHM - 12 bit - Resistive 4-Wire VQFN 20 3 V 4 x 4 x 0.98mm 4mm 4mm 0.98mm +85 °C -20 °C
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