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Touch screen light switch panel - Touch Screen Controllers

Touch screen interfaces are a highly effective medium of operating personal devices (like smartphones, tablets, etc.) or public informational devices (ATMs and ticket vending machines, for example) because of their highly interactive and user-friendly nature. Touch screen switch panels are also gaining popularity and can be seen in the control panel of cars, smart washing machines, and many other appliances. A variety of touch screen light switch is being used today in different types of applications, each having their own advantages and drawbacks. The two main types of touch screens used today are the resistive touch screens and the capacitive touch screens.

The resistive touch screen senses a touch when the pressure applied by the touch leads to contact between the two conductive layers of the screen. A capacitive touch screen, on the other hand, detects a touch when static charge from the screen is transferred to the human skin or stylus. Due to low prices, the resistive touch screens are preferred over other touch screens in areas where image quality can be compromised for low prices.

When a touch screen is touched at a given point on the touch screen, it creates an analog signal that containing some noise, which needs to be filtered and converted into digital signals, which is known as Data Acquisition. Also, when a touch screen is pressed, it leads to vibrations in the conductive layers and inductive and capacitive effects due to the drivers. The reading can be taken only when the voltage has settled. The time elapsed until this happens is called the settling-time. This settling-time also needs to be taken into account while taking the readings. Be

cause of such challenges, sensing and interpreting the touch signals requires a very advanced and sophisticated system which is generally called Touch Screen Controllers. These systems are available in the form of small chips (ICs).

As soon as the screen is touched, a series of processes are triggered inside the touch screen controllers. First of all, a few readings for the X-coordinate of the touched region are taken. After this, several readings are taken for the Y-coordinates as well. Similar happens for Z-values (if the system supports three-dimensional analysis). After this is done, the values of X, Y, and Z readings are averaged to reduce the noise in the signal. Then, the touch screen controller checks if the variation between different readings doesn’t fall outside a particular range or else, the readings are discarded and the whole process is repeated from the beginning.

The whole process involved in determining the position of the touch is carried out by the intelligent touch screen controller and no involvement is required from the CPU but the CPU just receives the final result and then processes it.

Data Acquisition - Touch Screen Controllers

Records 356
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Image
Part Number
Manufacturer
Description
Package
In Stock
Quantity
Resolution (Bits)
Interface
Voltage Reference
Voltage - Supply
Current - Supply
Operating Temperature
Mounting Type
Package / Case
Supplier Device Package
MAX11800ETC/V+
Maxim Integrated

IC TOUCH SCREEN CTRLR LP 12WQFN

  • Touchscreen: 4 Wire Resistive
  • Resolution (Bits): 12 b
  • Interface: SPI
  • Voltage Reference: -
  • Voltage - Supply: 1.7 V ~ 3.6 V
  • Current - Supply: -
  • Operating Temperature: -40°C ~ 85°C
  • Mounting Type: Surface Mount
  • Package / Case: 12-WQFN Exposed Pad
  • Supplier Device Package: 12-TQFN (4x4)
Package: 12-WQFN Exposed Pad
In Stock415
12 b
SPI
-
1.7 V ~ 3.6 V
-
-40°C ~ 85°C
Surface Mount
12-WQFN Exposed Pad
12-TQFN (4x4)
MK712RLF
IDT, Integrated Device Technology Inc

IC TOUCH SCREEN CTLR 28-SSOP

  • Touchscreen: 4 Wire Resistive
  • Resolution (Bits): 12 b
  • Interface: Parallel
  • Voltage Reference: -
  • Voltage - Supply: 3 V ~ 5.5 V
  • Current - Supply: 5mA
  • Operating Temperature: 0°C ~ 70°C
  • Mounting Type: Surface Mount
  • Package / Case: 28-SSOP (0.154", 3.90mm Width)
  • Supplier Device Package: 28-QSOP
Package: 28-SSOP (0.154", 3.90mm Width)
In Stock489
12 b
Parallel
-
3 V ~ 5.5 V
5mA
0°C ~ 70°C
Surface Mount
28-SSOP (0.154", 3.90mm Width)
28-QSOP
MAX1233ETI+T
Maxim Integrated

IC CNTRLR TOUCH 28-TQFN

  • Touchscreen: 4 Wire Resistive
  • Resolution (Bits): 8, 10, 12 b
  • Interface: SPI
  • Voltage Reference: External, Internal
  • Voltage - Supply: 2.7 V ~ 3.6 V
  • Current - Supply: -
  • Operating Temperature: -40°C ~ 85°C
  • Mounting Type: Surface Mount
  • Package / Case: 28-WFQFN Exposed Pad
  • Supplier Device Package: 28-TQFN (5x5)
Package: 28-WFQFN Exposed Pad
In Stock218
8, 10, 12 b
SPI
External, Internal
2.7 V ~ 3.6 V
-
-40°C ~ 85°C
Surface Mount
28-WFQFN Exposed Pad
28-TQFN (5x5)
MXB7843EEE+T
Maxim Integrated

IC CNTRLR TOUCH RES 16QSOP

  • Touchscreen: 4 Wire Resistive
  • Resolution (Bits): 12 b
  • Interface: SPI
  • Voltage Reference: External
  • Voltage - Supply: 2.38 V ~ 5.25 V
  • Current - Supply: 650µA
  • Operating Temperature: -40°C ~ 85°C
  • Mounting Type: Surface Mount
  • Package / Case: 16-SSOP (0.154", 3.90mm Width)
  • Supplier Device Package: 16-QSOP
Package: 16-SSOP (0.154", 3.90mm Width)
In Stock449
12 b
SPI
External
2.38 V ~ 5.25 V
650µA
-40°C ~ 85°C
Surface Mount
16-SSOP (0.154", 3.90mm Width)
16-QSOP
QT60161B-ASG
Microchip Technology

IC SENSOR MTRX TOUCH 16CH 44TQFP

  • Touchscreen: -
  • Resolution (Bits): 10, 16 b
  • Interface: SPI
  • Voltage Reference: -
  • Voltage - Supply: 4.75 V ~ 5.25 V
  • Current - Supply: 25mA
  • Operating Temperature: -40°C ~ 105°C
  • Mounting Type: Surface Mount
  • Package / Case: 44-TQFP
  • Supplier Device Package: 44-TQFP (10x10)
Package: 44-TQFP
In Stock370
10, 16 b
SPI
-
4.75 V ~ 5.25 V
25mA
-40°C ~ 105°C
Surface Mount
44-TQFP
44-TQFP (10x10)
hotAD7873ARUZ-REEL
Analog Devices Inc.

IC ADC 12BIT TOUCHSCREEN 16TSSOP

  • Touchscreen: 4 Wire Resistive
  • Resolution (Bits): 12 b
  • Interface: Serial
  • Voltage Reference: External, Internal
  • Voltage - Supply: 2.2 V ~ 5.25 V
  • Current - Supply: -
  • Operating Temperature: -40°C ~ 85°C
  • Mounting Type: Surface Mount
  • Package / Case: 16-TSSOP (0.173", 4.40mm Width)
  • Supplier Device Package: 16-TSSOP
Package: 16-TSSOP (0.173", 4.40mm Width)
In Stock10,800
12 b
Serial
External, Internal
2.2 V ~ 5.25 V
-
-40°C ~ 85°C
Surface Mount
16-TSSOP (0.173", 4.40mm Width)
16-TSSOP
AR1021T-I/SO
Microchip Technology

IC CTRLR TOUCH SENSE 20SOIC

  • Touchscreen: 4, 5, or 8 Wire Resistive
  • Resolution (Bits): 10 b
  • Interface: I2C, Serial, SPI
  • Voltage Reference: -
  • Voltage - Supply: 2.5 V ~ 5 V
  • Current - Supply: 17mA
  • Operating Temperature: -40°C ~ 85°C
  • Mounting Type: Surface Mount
  • Package / Case: 20-SOIC (0.295", 7.50mm Width)
  • Supplier Device Package: 20-SOIC
Package: 20-SOIC (0.295", 7.50mm Width)
In Stock185
10 b
I2C, Serial, SPI
-
2.5 V ~ 5 V
17mA
-40°C ~ 85°C
Surface Mount
20-SOIC (0.295", 7.50mm Width)
20-SOIC
AR1011T-I/SO
Microchip Technology

IC CTRLR TOUCH SENSE 20SOIC

  • Touchscreen: 4, 5, or 8 Wire Resistive
  • Resolution (Bits): 10 b
  • Interface: UART
  • Voltage Reference: -
  • Voltage - Supply: 2.5 V ~ 5 V
  • Current - Supply: 17mA
  • Operating Temperature: -40°C ~ 85°C
  • Mounting Type: Surface Mount
  • Package / Case: 20-SOIC (0.295", 7.50mm Width)
  • Supplier Device Package: 20-SOIC
Package: 20-SOIC (0.295", 7.50mm Width)
In Stock420
10 b
UART
-
2.5 V ~ 5 V
17mA
-40°C ~ 85°C
Surface Mount
20-SOIC (0.295", 7.50mm Width)
20-SOIC
MTCH6102T-I/MV
Microchip Technology

IC TOUCH CTLR PROJECTED 28UQFN

  • Touchscreen: 2 Wire Capacitive
  • Resolution (Bits): -
  • Interface: I2C
  • Voltage Reference: -
  • Voltage - Supply: 1.8 V ~ 3.6 V
  • Current - Supply: 1.17mA
  • Operating Temperature: -40°C ~ 85°C
  • Mounting Type: Surface Mount
  • Package / Case: 28-UFQFN Exposed Pad
  • Supplier Device Package: 28-QFN (4x4)
Package: 28-UFQFN Exposed Pad
In Stock170
-
I2C
-
1.8 V ~ 3.6 V
1.17mA
-40°C ~ 85°C
Surface Mount
28-UFQFN Exposed Pad
28-QFN (4x4)
AD7879WACPZ-R5
Analog Devices Inc.

TOUCH SCREEN CONTROLLER

  • Touchscreen: 4 Wire Resistive
  • Resolution (Bits): 12 b
  • Interface: SPI
  • Voltage Reference: External
  • Voltage - Supply: 1.6 V ~ 3.6 V
  • Current - Supply: -
  • Operating Temperature: -40°C ~ 85°C
  • Mounting Type: Surface Mount
  • Package / Case: 16-VQFN Exposed Pad, CSP
  • Supplier Device Package: 16-LFCSP-VQ (4x4)
Package: 16-VQFN Exposed Pad, CSP
In Stock349
12 b
SPI
External
1.6 V ~ 3.6 V
-
-40°C ~ 85°C
Surface Mount
16-VQFN Exposed Pad, CSP
16-LFCSP-VQ (4x4)
CYTMA445-44LQI33AA
Cypress Semiconductor Corp

IC SCREEN CNTRL 32BIT 44QFN

  • Touchscreen: 2 Wire Capacitive
  • Resolution (Bits): 32 b
  • Interface: I2C, SPI
  • Voltage Reference: -
  • Voltage - Supply: 1.71 V ~ 5.5 V
  • Current - Supply: -
  • Operating Temperature: -
  • Mounting Type: Surface Mount
  • Package / Case: 44-UFQFN Exposed Pad
  • Supplier Device Package: 44-QFN (5x5)
Package: 44-UFQFN Exposed Pad
In Stock969
32 b
I2C, SPI
-
1.71 V ~ 5.5 V
-
-
Surface Mount
44-UFQFN Exposed Pad
44-QFN (5x5)
BU21023MUV-E2
Rohm Semiconductor

IC CTRLR TOUCH SCREEN 28VQFN

  • Touchscreen: 4 Wire Resistive
  • Resolution (Bits): 8 b
  • Interface: I2C, Serial, SPI
  • Voltage Reference: -
  • Voltage - Supply: 2.7 V ~ 3.6 V
  • Current - Supply: 4mA
  • Operating Temperature: -20°C ~ 85°C
  • Mounting Type: Surface Mount
  • Package / Case: 28-VFQFN Exposed Pad
  • Supplier Device Package: 28-QFN
Package: 28-VFQFN Exposed Pad
In Stock101
8 b
I2C, Serial, SPI
-
2.7 V ~ 3.6 V
4mA
-20°C ~ 85°C
Surface Mount
28-VFQFN Exposed Pad
28-QFN
BU21029GUL-E2
Rohm Semiconductor

IC TOUCH SCREEN CTLR 50VCSP

  • Touchscreen: 4 Wire Resistive
  • Resolution (Bits): 12 b
  • Interface: I2C
  • Voltage Reference: External
  • Voltage - Supply: 1.65 V ~ 3.6 V
  • Current - Supply: 800µA
  • Operating Temperature: -20°C ~ 85°C
  • Mounting Type: Surface Mount
  • Package / Case: 16-UFBGA, CSPBGA
  • Supplier Device Package: 16-VCSP50L2 (2x2)
Package: 16-UFBGA, CSPBGA
In Stock190
12 b
I2C
External
1.65 V ~ 3.6 V
800µA
-20°C ~ 85°C
Surface Mount
16-UFBGA, CSPBGA
16-VCSP50L2 (2x2)
hotAD7843ARUZ
Analog Devices Inc.

IC ADC 12BIT TOUCHSCREEN 16TSSOP

  • Touchscreen: 4 Wire Resistive
  • Resolution (Bits): 12 b
  • Interface: Serial
  • Voltage Reference: External
  • Voltage - Supply: 2.2 V ~ 5.25 V
  • Current - Supply: -
  • Operating Temperature: -40°C ~ 85°C
  • Mounting Type: Surface Mount
  • Package / Case: 16-TSSOP (0.173", 4.40mm Width)
  • Supplier Device Package: 16-TSSOP
Package: 16-TSSOP (0.173", 4.40mm Width)
In Stock8,288
12 b
Serial
External
2.2 V ~ 5.25 V
-
-40°C ~ 85°C
Surface Mount
16-TSSOP (0.173", 4.40mm Width)
16-TSSOP
hotAD7879-1ACPZ-500R7
Analog Devices Inc.

IC ADC 12BIT CTRLR TOUCH 16LFCSP

  • Touchscreen: 4 Wire Resistive
  • Resolution (Bits): 12 b
  • Interface: I2C, Serial
  • Voltage Reference: External
  • Voltage - Supply: 1.6 V ~ 3.6 V
  • Current - Supply: -
  • Operating Temperature: -40°C ~ 85°C
  • Mounting Type: Surface Mount
  • Package / Case: 16-VQFN Exposed Pad, CSP
  • Supplier Device Package: 16-LFCSP-VQ (4x4)
Package: 16-VQFN Exposed Pad, CSP
In Stock1,045
12 b
I2C, Serial
External
1.6 V ~ 3.6 V
-
-40°C ~ 85°C
Surface Mount
16-VQFN Exposed Pad, CSP
16-LFCSP-VQ (4x4)
CP8597ATT
Cypress Semiconductor Corp

IC SCREEN CON TRUETOUCH 48WLCSP

  • Touchscreen: -
  • Resolution (Bits): -
  • Interface: -
  • Voltage Reference: -
  • Voltage - Supply: -
  • Current - Supply: -
  • Operating Temperature: -
  • Mounting Type: -
  • Package / Case: -
  • Supplier Device Package: -
Package: -
In Stock334
-
-
-
-
-
-
-
-
-
CP8334ATT
Cypress Semiconductor Corp

IC SCREEN CNTRL TRUETOUCH

  • Touchscreen: -
  • Resolution (Bits): -
  • Interface: -
  • Voltage Reference: -
  • Voltage - Supply: -
  • Current - Supply: -
  • Operating Temperature: -
  • Mounting Type: -
  • Package / Case: -
  • Supplier Device Package: -
Package: -
In Stock316
-
-
-
-
-
-
-
-
-
CP8132BTT
Cypress Semiconductor Corp

IC SCREEN CNTRL TRUETOUCH 44QFN

  • Touchscreen: -
  • Resolution (Bits): -
  • Interface: -
  • Voltage Reference: -
  • Voltage - Supply: -
  • Current - Supply: -
  • Operating Temperature: -
  • Mounting Type: -
  • Package / Case: -
  • Supplier Device Package: -
Package: -
In Stock102
-
-
-
-
-
-
-
-
-
CP7994ATT
Cypress Semiconductor Corp

IC SCREEN CNTRL TRUETOUCH 84BGA

  • Touchscreen: -
  • Resolution (Bits): -
  • Interface: -
  • Voltage Reference: -
  • Voltage - Supply: -
  • Current - Supply: -
  • Operating Temperature: -
  • Mounting Type: -
  • Package / Case: -
  • Supplier Device Package: -
Package: -
In Stock317
-
-
-
-
-
-
-
-
-
CG8374AFT
Cypress Semiconductor Corp

IC SCREEN CNTRL 56QFN

  • Touchscreen: -
  • Resolution (Bits): -
  • Interface: -
  • Voltage Reference: -
  • Voltage - Supply: -
  • Current - Supply: -
  • Operating Temperature: -
  • Mounting Type: -
  • Package / Case: -
  • Supplier Device Package: -
Package: -
In Stock399
-
-
-
-
-
-
-
-
-
CP8367AT
Cypress Semiconductor Corp

IC SCREEN CNTRL TRUETOUCH

  • Touchscreen: -
  • Resolution (Bits): -
  • Interface: -
  • Voltage Reference: -
  • Voltage - Supply: -
  • Current - Supply: -
  • Operating Temperature: -
  • Mounting Type: -
  • Package / Case: -
  • Supplier Device Package: -
Package: -
In Stock424
-
-
-
-
-
-
-
-
-
CP8141BT
Cypress Semiconductor Corp

IC SCREEN CNTRL TRUETOUCH

  • Touchscreen: -
  • Resolution (Bits): -
  • Interface: -
  • Voltage Reference: -
  • Voltage - Supply: -
  • Current - Supply: -
  • Operating Temperature: -
  • Mounting Type: -
  • Package / Case: -
  • Supplier Device Package: -
Package: -
In Stock302
-
-
-
-
-
-
-
-
-
CP8141AT
Cypress Semiconductor Corp

IC SCREEN CNTRL TRUETOUCH

  • Touchscreen: -
  • Resolution (Bits): -
  • Interface: -
  • Voltage Reference: -
  • Voltage - Supply: -
  • Current - Supply: -
  • Operating Temperature: -
  • Mounting Type: -
  • Package / Case: -
  • Supplier Device Package: -
Package: -
In Stock444
-
-
-
-
-
-
-
-
-
CP8133AT
Cypress Semiconductor Corp

IC SCREEN CNTRL TRUETOUCH

  • Touchscreen: -
  • Resolution (Bits): -
  • Interface: -
  • Voltage Reference: -
  • Voltage - Supply: -
  • Current - Supply: -
  • Operating Temperature: -
  • Mounting Type: -
  • Package / Case: -
  • Supplier Device Package: -
Package: -
In Stock101
-
-
-
-
-
-
-
-
-
CG8506AA
Cypress Semiconductor Corp

IC SCREEN CNTRL PSOC 56QFN

  • Touchscreen: -
  • Resolution (Bits): -
  • Interface: -
  • Voltage Reference: -
  • Voltage - Supply: -
  • Current - Supply: -
  • Operating Temperature: -
  • Mounting Type: -
  • Package / Case: -
  • Supplier Device Package: -
Package: -
In Stock128
-
-
-
-
-
-
-
-
-
CG8508AAT
Cypress Semiconductor Corp

IC SCREEN CNTRL PSOC 48QFN

  • Touchscreen: -
  • Resolution (Bits): -
  • Interface: -
  • Voltage Reference: -
  • Voltage - Supply: -
  • Current - Supply: -
  • Operating Temperature: -
  • Mounting Type: -
  • Package / Case: -
  • Supplier Device Package: -
Package: -
In Stock191
-
-
-
-
-
-
-
-
-
CG8524AA
Cypress Semiconductor Corp

IC SCREEN CNTRL PSOC 48QFN

  • Touchscreen: -
  • Resolution (Bits): -
  • Interface: -
  • Voltage Reference: -
  • Voltage - Supply: -
  • Current - Supply: -
  • Operating Temperature: -
  • Mounting Type: -
  • Package / Case: -
  • Supplier Device Package: -
Package: -
In Stock114
-
-
-
-
-
-
-
-
-
CG8496AAT
Cypress Semiconductor Corp

IC SCREEN CNTRL PSOC 44QFN

  • Touchscreen: -
  • Resolution (Bits): -
  • Interface: -
  • Voltage Reference: -
  • Voltage - Supply: -
  • Current - Supply: -
  • Operating Temperature: -
  • Mounting Type: -
  • Package / Case: -
  • Supplier Device Package: -
Package: -
In Stock132
-
-
-
-
-
-
-
-
-
CG8513AA
Cypress Semiconductor Corp

IC SCREEN CNTRL PSOC 44QFN

  • Touchscreen: -
  • Resolution (Bits): -
  • Interface: -
  • Voltage Reference: -
  • Voltage - Supply: -
  • Current - Supply: -
  • Operating Temperature: -
  • Mounting Type: -
  • Package / Case: -
  • Supplier Device Package: -
Package: -
In Stock375
-
-
-
-
-
-
-
-
-
CG8526AAT
Cypress Semiconductor Corp

IC SCREEN CNTRL PSOC 44QFN

  • Touchscreen: -
  • Resolution (Bits): -
  • Interface: -
  • Voltage Reference: -
  • Voltage - Supply: -
  • Current - Supply: -
  • Operating Temperature: -
  • Mounting Type: -
  • Package / Case: -
  • Supplier Device Package: -
Package: -
In Stock453
-
-
-
-
-
-
-
-
-