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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
CYTMA445-44LQI33AC
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 Stock134
32 b
I2C, SPI
-
1.71 V ~ 5.5 V
-
-
Surface Mount
44-UFQFN Exposed Pad
44-QFN (5x5)
CYTMA445-44LQI33AE
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 Stock101
32 b
I2C, SPI
-
1.71 V ~ 5.5 V
-
-
Surface Mount
44-UFQFN Exposed Pad
44-QFN (5x5)
LDS7001NTGI8
IDT, Integrated Device Technology Inc

IC SCREEN CNTRL 10BIT 48VFQFN

  • Touchscreen: 2 Wire Capacitive
  • Resolution (Bits): 10 b
  • Interface: I2C, SPI
  • Voltage Reference: Internal
  • Voltage - Supply: 2.7 V ~ 3.6 V
  • Current - Supply: -
  • Operating Temperature: -
  • Mounting Type: Surface Mount
  • Package / Case: 48-WFQFN Exposed Pad
  • Supplier Device Package: 48-VFQFN (6x6)
Package: 48-WFQFN Exposed Pad
In Stock458
10 b
I2C, SPI
Internal
2.7 V ~ 3.6 V
-
-
Surface Mount
48-WFQFN Exposed Pad
48-VFQFN (6x6)
hotSX8657IWLTRT
Semtech Corporation

IC TOUCH SCREEN 12BIT 20QFN

  • Touchscreen: 4 or 5 Wire Resistive
  • Resolution (Bits): 12 b
  • Interface: I2C, Serial
  • Voltage Reference: Internal
  • Voltage - Supply: 2.3 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-QFN (4x4)
Package: 20-WFQFN Exposed Pad
In Stock447
12 b
I2C, Serial
Internal
2.3 V ~ 3.6 V
-
-40°C ~ 85°C
Surface Mount
20-WFQFN Exposed Pad
20-QFN (4x4)
AD7889-1ACBZ-500R7
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 Stock207
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)
MPR181EJR2
NXP

IC CTLR TOUCH SENSOR 8-TSSOP

  • Touchscreen: -
  • Resolution (Bits): -
  • Interface: -
  • Voltage Reference: -
  • Voltage - Supply: -
  • Current - Supply: -
  • Operating Temperature: -
  • 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 Stock107
-
-
-
-
-
-
Surface Mount
16-TSSOP (0.173", 4.40mm Width)
16-TSSOP
MPR181EJ
NXP

IC CTLR TOUCH SENSOR 8-TSSOP

  • Touchscreen: -
  • Resolution (Bits): -
  • Interface: -
  • Voltage Reference: -
  • Voltage - Supply: -
  • Current - Supply: -
  • Operating Temperature: -
  • 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 Stock222
-
-
-
-
-
-
Surface Mount
16-TSSOP (0.173", 4.40mm Width)
16-TSSOP
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)
MK712SLFTR
IDT, Integrated Device Technology Inc

IC TOUCH SCREEN CTLR 28-SOIC

  • 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-SOIC (0.295", 7.50mm Width)
  • Supplier Device Package: 28-SOIC
Package: 28-SOIC (0.295", 7.50mm Width)
In Stock387
12 b
Parallel
-
3 V ~ 5.5 V
5mA
0°C ~ 70°C
Surface Mount
28-SOIC (0.295", 7.50mm Width)
28-SOIC
MK712RITR
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 Stock109
12 b
Parallel
-
3 V ~ 5.5 V
5mA
-
Surface Mount
28-SSOP (0.154", 3.90mm Width)
28-QSOP
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)
SX8677IWLTRT
Semtech Corporation

IC SCREEN CNTRL 12BIT 20QFN

  • Touchscreen: 4 or 5 Wire Resistive
  • Resolution (Bits): 12 b
  • Interface: I2C, Serial
  • Voltage Reference: Internal
  • Voltage - Supply: 2.3 V ~ 3.6 V
  • Current - Supply: 120µA
  • Operating Temperature: -40°C ~ 85°C
  • Mounting Type: Surface Mount
  • Package / Case: 20-WFQFN Exposed Pad
  • Supplier Device Package: 20-QFN (4x4)
Package: 20-WFQFN Exposed Pad
In Stock254
12 b
I2C, Serial
Internal
2.3 V ~ 3.6 V
120µA
-40°C ~ 85°C
Surface Mount
20-WFQFN Exposed Pad
20-QFN (4x4)
AR1021T-I/ML
Microchip Technology

IC CTRLR TOUCH SENSE 20QFN

  • 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-VFQFN Exposed Pad
  • Supplier Device Package: 20-QFN (4x4)
Package: 20-VFQFN Exposed Pad
In Stock332
10 b
I2C, Serial, SPI
-
2.5 V ~ 5 V
17mA
-40°C ~ 85°C
Surface Mount
20-VFQFN Exposed Pad
20-QFN (4x4)
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
hotSX8676IWLTRT
Semtech Corporation

IC SCREEN CNTRL 12BIT 20QFN

  • Touchscreen: 4 or 5 Wire Resistive
  • Resolution (Bits): 12 b
  • Interface: I2C, Serial
  • Voltage Reference: Internal
  • Voltage - Supply: 2.3 V ~ 3.6 V
  • Current - Supply: 120µA
  • Operating Temperature: -40°C ~ 85°C
  • Mounting Type: Surface Mount
  • Package / Case: 20-WFQFN Exposed Pad
  • Supplier Device Package: 20-QFN (4x4)
Package: 20-WFQFN Exposed Pad
In Stock5,580
12 b
I2C, Serial
Internal
2.3 V ~ 3.6 V
120µA
-40°C ~ 85°C
Surface Mount
20-WFQFN Exposed Pad
20-QFN (4x4)
AR1010-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 Stock436
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/SS
Microchip Technology

IC TOUCH CTLR PROJECTED 28SSOP

  • 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-SSOP (0.209", 5.30mm Width)
  • Supplier Device Package: 28-SSOP
Package: 28-SSOP (0.209", 5.30mm Width)
In Stock162
-
I2C
-
1.8 V ~ 3.6 V
1.17mA
-40°C ~ 85°C
Surface Mount
28-SSOP (0.209", 5.30mm Width)
28-SSOP
AR1010-I/SS
Microchip Technology

IC TOUCH SCREEN CTRLR 20-SSOP

  • 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-SSOP (0.209", 5.30mm Width)
  • Supplier Device Package: 20-SSOP
Package: 20-SSOP (0.209", 5.30mm Width)
In Stock349
10 b
UART
-
2.5 V ~ 5 V
17mA
-40°C ~ 85°C
Surface Mount
20-SSOP (0.209", 5.30mm Width)
20-SSOP
MTCH6303T-I/RG
Microchip Technology

IC TOUCH CTRLR 64QFN

  • Touchscreen: 2 Wire Capacitive
  • Resolution (Bits): -
  • Interface: I2C, USB
  • Voltage Reference: -
  • Voltage - Supply: 2.3 V ~ 3.6 V
  • Current - Supply: -
  • Operating Temperature: -40°C ~ 85°C
  • Mounting Type: Surface Mount
  • Package / Case: 64-VFQFN Exposed Pad
  • Supplier Device Package: 64-QFN (9x9)
Package: 64-VFQFN Exposed Pad
In Stock112
-
I2C, USB
-
2.3 V ~ 3.6 V
-
-40°C ~ 85°C
Surface Mount
64-VFQFN Exposed Pad
64-QFN (9x9)
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
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
MAX11803ETC+G3U
Maxim Integrated

INTEGRATED CIRCUIT

  • Touchscreen: -
  • Resolution (Bits): -
  • Interface: -
  • Voltage Reference: -
  • Voltage - Supply: -
  • Current - Supply: -
  • Operating Temperature: -
  • Mounting Type: -
  • Package / Case: -
  • Supplier Device Package: -
Package: -
In Stock169
-
-
-
-
-
-
-
-
-
CP8400BTT
Cypress Semiconductor Corp

IC SCREEN CNTRL TRUETOUCH 56QFN

  • Touchscreen: -
  • Resolution (Bits): -
  • Interface: -
  • Voltage Reference: -
  • Voltage - Supply: -
  • Current - Supply: -
  • Operating Temperature: -
  • Mounting Type: -
  • Package / Case: -
  • Supplier Device Package: -
Package: -
In Stock446
-
-
-
-
-
-
-
-
-
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
-
-
-
-
-
-
-
-
-
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
-
-
-
-
-
-
-
-
-
CP8400ATT
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 Stock240
-
-
-
-
-
-
-
-
-
CP8064ATT
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 Stock310
-
-
-
-
-
-
-
-
-
CP8063ATT
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 Stock110
-
-
-
-
-
-
-
-
-
CG8652AFT
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 Stock117
-
-
-
-
-
-
-
-
-
CP8398AT
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 Stock210
-
-
-
-
-
-
-
-
-