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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
MAX11803ETC/V+
Maxim Integrated

IC CTRLR TOUCH-SCREEN 12-QFN

  • Touchscreen: 4 Wire Resistive
  • Resolution (Bits): 12 b
  • Interface: I2C, Serial
  • 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 Stock102
12 b
I2C, Serial
-
1.7 V ~ 3.6 V
-
-40°C ~ 85°C
Surface Mount
12-WQFN Exposed Pad
12-TQFN (4x4)
MAX11811ETP+
Maxim Integrated

IC TOUCH SCREEN 12BIT I2C 20TQFN

  • Touchscreen: 4 Wire Resistive
  • Resolution (Bits): 12 b
  • Interface: I2C, Serial
  • Voltage Reference: -
  • Voltage - Supply: 1.7 V ~ 3.6 V
  • Current - Supply: -
  • Operating Temperature: -40°C ~ 85°C
  • Mounting Type: Surface Mount
  • Package / Case: 20-WFQFN Exposed Pad
  • Supplier Device Package: 20-TQFN (4x4)
Package: 20-WFQFN Exposed Pad
In Stock102
12 b
I2C, Serial
-
1.7 V ~ 3.6 V
-
-40°C ~ 85°C
Surface Mount
20-WFQFN Exposed Pad
20-TQFN (4x4)
AD7889-1ACBZ-RL
Analog Devices Inc.

IC ADC 12BIT CTRLR TOUCH 12WLCSP

  • Touchscreen: 4 Wire Resistive
  • Resolution (Bits): 12 b
  • Interface: I2C, Serial
  • Voltage Reference: External
  • Voltage - Supply: 1.6 V ~ 3.6 V
  • Current - Supply: 10nA
  • Operating Temperature: -40°C ~ 85°C
  • Mounting Type: Surface Mount
  • Package / Case: 12-UFBGA, WLCSP
  • Supplier Device Package: 12-WLCSP (1.51x2.01)
Package: 12-UFBGA, WLCSP
In Stock281
12 b
I2C, Serial
External
1.6 V ~ 3.6 V
10nA
-40°C ~ 85°C
Surface Mount
12-UFBGA, WLCSP
12-WLCSP (1.51x2.01)
hotMK712RTR
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: -
  • 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 Stock289
12 b
Parallel
-
3 V ~ 5.5 V
5mA
-
Surface Mount
28-SSOP (0.154", 3.90mm Width)
28-QSOP
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
AD7877ACBZ-REEL7
Analog Devices Inc.

IC CTRLR TOUCH SCREEN 25-WLCSP

  • Touchscreen: 4 Wire Resistive
  • Resolution (Bits): 12 b
  • Interface: SPI
  • Voltage Reference: External, Internal
  • Voltage - Supply: 2.7 V ~ 5.25 V
  • Current - Supply: 1µA
  • Operating Temperature: -40°C ~ 85°C
  • Mounting Type: Surface Mount
  • Package / Case: 25-UFBGA, WLCSP
  • Supplier Device Package: 25-WLCSP
Package: 25-UFBGA, WLCSP
In Stock145
12 b
SPI
External, Internal
2.7 V ~ 5.25 V
1µA
-40°C ~ 85°C
Surface Mount
25-UFBGA, WLCSP
25-WLCSP
hotAD7873ACPZ-REEL
Analog Devices Inc.

IC ADC 12BIT TOUCHSCREEN 16LFCSP

  • 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-VQFN Exposed Pad, CSP
  • Supplier Device Package: 16-LFCSP-VQ (4x4)
Package: 16-VQFN Exposed Pad, CSP
In Stock3,246
12 b
Serial
External, Internal
2.2 V ~ 5.25 V
-
-40°C ~ 85°C
Surface Mount
16-VQFN Exposed Pad, CSP
16-LFCSP-VQ (4x4)
QT112-S
Microchip Technology

SENSOR IC TOUCH/PROXMTY 1CH8SOIC

  • Touchscreen: 2 Wire Capacitive
  • Resolution (Bits): 14 b
  • Interface: Serial
  • Voltage Reference: Internal
  • Voltage - Supply: 2.45 V ~ 5.25 V
  • Current - Supply: 60µA
  • Operating Temperature: 0°C ~ 70°C
  • Mounting Type: Surface Mount
  • Package / Case: 8-SOIC (0.209", 5.30mm Width)
  • Supplier Device Package: 8-SO
Package: 8-SOIC (0.209", 5.30mm Width)
In Stock484
14 b
Serial
Internal
2.45 V ~ 5.25 V
60µA
0°C ~ 70°C
Surface Mount
8-SOIC (0.209", 5.30mm Width)
8-SO
hotAD7873ARUZ-REEL7
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 Stock13,946
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
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
AD7879WARUZ-RL7
Analog Devices Inc.

IC ADC 12BIT CTLR TOUCH 16TSSOP

  • 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-TSSOP (0.173", 4.40mm Width)
  • Supplier Device Package: 16-TSSOP
Package: 16-TSSOP (0.173", 4.40mm Width)
In Stock349
12 b
SPI
External
1.6 V ~ 3.6 V
-
-40°C ~ 85°C
Surface Mount
16-TSSOP (0.173", 4.40mm Width)
16-TSSOP
AR1010T-I/SO
Microchip Technology

IC TOUCH SCREEN CTRLR 20-SOIC

  • 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 Stock129
10 b
UART
-
2.5 V ~ 5 V
17mA
-40°C ~ 85°C
Surface Mount
20-SOIC (0.295", 7.50mm Width)
20-SOIC
AR1020T-I/SO
Microchip Technology

IC TOUCH SCREEN CTRLR 20-SOIC

  • 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 Stock139
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
hotSX8650IWLTRT
Semtech Corporation

IC TOUCH CTLR 4WIRE 12DFN

  • Touchscreen: 4 Wire Resistive
  • Resolution (Bits): 12 b
  • Interface: I2C
  • Voltage Reference: Internal
  • Voltage - Supply: 1.65 V ~ 3.7 V
  • Current - Supply: 105µA
  • Operating Temperature: -40°C ~ 85°C
  • Mounting Type: Surface Mount
  • Package / Case: 12-WFDFN Exposed Pad
  • Supplier Device Package: 12-DFN (3x3)
Package: 12-WFDFN Exposed Pad
In Stock68,674
12 b
I2C
Internal
1.65 V ~ 3.7 V
105µA
-40°C ~ 85°C
Surface Mount
12-WFDFN Exposed Pad
12-DFN (3x3)
BU21025GUL-E2
Rohm Semiconductor

IC TOUCH SCREEN CTLR 50VCSP

  • Touchscreen: 4 Wire Resistive
  • Resolution (Bits): 12 b
  • Interface: I2C
  • Voltage Reference: -
  • Voltage - Supply: 1.65 V ~ 3.6 V
  • Current - Supply: 120µA
  • Operating Temperature: -35°C ~ 85°C
  • Mounting Type: Surface Mount
  • Package / Case: 12-UFBGA, CSPBGA
  • Supplier Device Package: 12-VCSP50L2 (2x1.5)
Package: 12-UFBGA, CSPBGA
In Stock131
12 b
I2C
-
1.65 V ~ 3.6 V
120µA
-35°C ~ 85°C
Surface Mount
12-UFBGA, CSPBGA
12-VCSP50L2 (2x1.5)
AD7873ACPZ
Analog Devices Inc.

IC ADC 12BIT TOUCHSCREEN 16LFCSP

  • 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-VQFN Exposed Pad, CSP
  • Supplier Device Package: 16-LFCSP-VQ (4x4)
Package: 16-VQFN Exposed Pad, CSP
In Stock456
12 b
Serial
External, Internal
2.2 V ~ 5.25 V
-
-40°C ~ 85°C
Surface Mount
16-VQFN Exposed Pad, CSP
16-LFCSP-VQ (4x4)
hotMTCH6301-I/PT
Microchip Technology

IC TOUCH CTRLR 44TQFP

  • Touchscreen: 2 Wire Capacitive
  • Resolution (Bits): -
  • Interface: I2C
  • Voltage Reference: -
  • Voltage - Supply: 2.3 V ~ 3.6 V
  • Current - Supply: 19mA
  • Operating Temperature: -40°C ~ 85°C
  • Mounting Type: Surface Mount
  • Package / Case: 44-TQFP
  • Supplier Device Package: 44-TQFP (10x10)
Package: 44-TQFP
In Stock883
-
I2C
-
2.3 V ~ 3.6 V
19mA
-40°C ~ 85°C
Surface Mount
44-TQFP
44-TQFP (10x10)
CS445AT
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 Stock113
-
-
-
-
-
-
-
-
-
CP8369ATT
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 Stock398
-
-
-
-
-
-
-
-
-
CP8139BTT
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 Stock284
-
-
-
-
-
-
-
-
-
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
-
-
-
-
-
-
-
-
-
CP8330AT
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 Stock352
-
-
-
-
-
-
-
-
-
CG8502AA
Cypress Semiconductor Corp

IC SCREEN CNTRL PSOC 70BGA

  • Touchscreen: -
  • Resolution (Bits): -
  • Interface: -
  • Voltage Reference: -
  • Voltage - Supply: -
  • Current - Supply: -
  • Operating Temperature: -
  • Mounting Type: -
  • Package / Case: -
  • Supplier Device Package: -
Package: -
In Stock497
-
-
-
-
-
-
-
-
-
CG8472AA
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 Stock217
-
-
-
-
-
-
-
-
-
CG8529AA
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 Stock315
-
-
-
-
-
-
-
-
-
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
-
-
-
-
-
-
-
-
-
CG8515AAT
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 Stock439
-
-
-
-
-
-
-
-
-
CG8549AAT
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 Stock248
-
-
-
-
-
-
-
-
-
CG8549AA
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 Stock345
-
-
-
-
-
-
-
-
-
ATMXT640T-CCU050
Microchip Technology

IC SCREEN CNTRL 84UFBGA

  • Touchscreen: -
  • Resolution (Bits): -
  • Interface: I²C
  • Voltage Reference: -
  • Voltage - Supply: 3.3V
  • Current - Supply: -
  • Operating Temperature: -40°C ~ 85°C (TA)
  • Mounting Type: Surface Mount
  • Package / Case: 84-BGA
  • Supplier Device Package: 84-UFBGA (6x6)
Package: 84-BGA
In Stock253
-
I²C
-
3.3V
-
-40°C ~ 85°C (TA)
Surface Mount
84-BGA
84-UFBGA (6x6)