Touch screen light switch panel - Touch Screen Controllers - Heisener
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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

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Image
Part Number
Manufacturer
Description
Package
Stock
Quantity
Resolution (Bits)
Interface
Voltage Reference
Voltage - Supply
Current - Supply
Operating Temperature
Mounting Type
Package / Case
Supplier Device Package
ATMXT640T-CCU048
Microchip Technology

INTERFACE,TOUCH SCREEN CONTROLLR

  • Touchscreen: -
  • Resolution (Bits): -
  • Interface: I2C
  • Voltage Reference: -
  • Voltage - Supply: 3.3V
  • Current - Supply: -
  • Operating Temperature: -40°C ~ 85°C
  • Mounting Type: Surface Mount
  • Package / Case: -
  • Supplier Device Package: -
Package: -
Stock6,208
-
I2C
-
3.3V
-
-40°C ~ 85°C
Surface Mount
-
-
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
Stock4,896
12 b
I2C, Serial
-
1.7 V ~ 3.6 V
-
-40°C ~ 85°C
Surface Mount
12-WQFN Exposed Pad
12-TQFN (4x4)
hot SX8657IWLTRT
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
Stock7,152
12 b
I2C, Serial
Internal
2.3 V ~ 3.6 V
-
-40°C ~ 85°C
Surface Mount
20-WFQFN Exposed Pad
20-QFN (4x4)
TSC2020IRTVR
Texas Instruments

IC TOUCH SCREEN CTRLR 32QFN

  • Touchscreen: 4 Wire Resistive
  • Resolution (Bits): 12 b
  • Interface: I2C, Serial
  • Voltage Reference: Internal
  • Voltage - Supply: 1.6 V ~ 3.6 V
  • Current - Supply: -
  • Operating Temperature: -40°C ~ 85°C
  • Mounting Type: Surface Mount
  • Package / Case: 32-WFQFN Exposed Pad
  • Supplier Device Package: 32-WQFN (5x5)
Package: 32-WFQFN Exposed Pad
Stock5,040
12 b
I2C, Serial
Internal
1.6 V ~ 3.6 V
-
-40°C ~ 85°C
Surface Mount
32-WFQFN Exposed Pad
32-WQFN (5x5)
MAX11801ETC/V+T
Maxim Integrated

IC TOUCH SCREEN CTRLR LP 12WQFN

  • 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
Stock6,960
12 b
I2C, Serial
-
1.7 V ~ 3.6 V
-
-40°C ~ 85°C
Surface Mount
12-WQFN Exposed Pad
12-TQFN (4x4)
hot MAX11803ETC+
Maxim Integrated

IC CTRLR TOUCH-SCREEN 12-TQFN

  • 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
Stock19,596
12 b
I2C, Serial
-
1.7 V ~ 3.6 V
-
-40°C ~ 85°C
Surface Mount
12-WQFN Exposed Pad
12-TQFN (4x4)
MK712STR
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: -
  • 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)
Stock2,368
12 b
Parallel
-
3 V ~ 5.5 V
5mA
-
Surface Mount
28-SOIC (0.295", 7.50mm Width)
28-SOIC
hot TSC2111IRGZRG4
Texas Instruments

IC AUDIO CODEC 12BIT SER 48VQFN

  • Touchscreen: 4 Wire Resistive
  • Resolution (Bits): 12 b
  • Interface: SPI
  • Voltage Reference: External, Internal
  • Voltage - Supply: 3 V ~ 3.6 V
  • Current - Supply: 68µA
  • Operating Temperature: -40°C ~ 85°C
  • Mounting Type: Surface Mount
  • Package / Case: 48-VFQFN Exposed Pad
  • Supplier Device Package: 48-VQFN (7x7)
Package: 48-VFQFN Exposed Pad
Stock29,976
12 b
SPI
External, Internal
3 V ~ 3.6 V
68µA
-40°C ~ 85°C
Surface Mount
48-VFQFN Exposed Pad
48-VQFN (7x7)
LM8300HLQ9
Texas Instruments

IC TOUCHSCREEN CONTROLLER 44WQFN

  • Touchscreen: 4 Wire Resistive
  • Resolution (Bits): 10 b
  • Interface: UART
  • Voltage Reference: -
  • Voltage - Supply: 2.7 V ~ 5.5 V
  • Current - Supply: 11.5mA
  • Operating Temperature: 0°C ~ 70°C
  • Mounting Type: Surface Mount
  • Package / Case: 44-WFQFN Exposed Pad
  • Supplier Device Package: 44-WQFN (7x7)
Package: 44-WFQFN Exposed Pad
Stock2,128
10 b
UART
-
2.7 V ~ 5.5 V
11.5mA
0°C ~ 70°C
Surface Mount
44-WFQFN Exposed Pad
44-WQFN (7x7)
hot TSC2046IGQCR
Texas Instruments

IC TOUCH SCREEN CTRLR 48-BGA

  • Touchscreen: 4 Wire Resistive
  • Resolution (Bits): 12 b
  • Interface: SPI
  • Voltage Reference: Internal
  • Voltage - Supply: 2.2 V ~ 5.25 V
  • Current - Supply: 780µA
  • Operating Temperature: -40°C ~ 85°C
  • Mounting Type: Surface Mount
  • Package / Case: 48-VFBGA
  • Supplier Device Package: 48-BGA MICROSTAR JUNIOR (4x4)
Package: 48-VFBGA
Stock66,768
12 b
SPI
Internal
2.2 V ~ 5.25 V
780µA
-40°C ~ 85°C
Surface Mount
48-VFBGA
48-BGA MICROSTAR JUNIOR (4x4)
QT110-S
Microchip Technology

SENSOR IC TOUCH/PROXMTY 1CH8SOIC

  • Touchscreen: 2 Wire Capacitive
  • Resolution (Bits): 14 b
  • Interface: Serial
  • Voltage Reference: Internal
  • Voltage - Supply: 2.5V, 3.3V, 5V
  • Current - Supply: 20µA
  • Operating Temperature: 0°C ~ 70°C
  • Mounting Type: Surface Mount
  • Package / Case: 8-SOIC (0.154", 3.90mm Width)
  • Supplier Device Package: 8-SO
Package: 8-SOIC (0.154", 3.90mm Width)
Stock5,680
14 b
Serial
Internal
2.5V, 3.3V, 5V
20µA
0°C ~ 70°C
Surface Mount
8-SOIC (0.154", 3.90mm Width)
8-SO
LM8500IMT9B/NOPB
Texas Instruments

IC TOUCHSCREEN CONTROLLR 48TSSOP

  • Touchscreen: 4 Wire Resistive
  • Resolution (Bits): 10 b
  • Interface: UART
  • Voltage Reference: -
  • Voltage - Supply: 2.7 V ~ 5.5 V
  • Current - Supply: 11.5mA
  • Operating Temperature: 0°C ~ 70°C
  • Mounting Type: Surface Mount
  • Package / Case: 48-TFSOP (0.240", 6.10mm Width)
  • Supplier Device Package: 48-TSSOP
Package: 48-TFSOP (0.240", 6.10mm Width)
Stock2,912
10 b
UART
-
2.7 V ~ 5.5 V
11.5mA
0°C ~ 70°C
Surface Mount
48-TFSOP (0.240", 6.10mm Width)
48-TSSOP
hot TSC2003IPWG4
Texas Instruments

IC TOUCH SCREEN 12BIT 16TSSOP

  • Touchscreen: 4 Wire Resistive
  • Resolution (Bits): 12 b
  • Interface: I2C
  • Voltage Reference: Internal
  • Voltage - Supply: 2.5 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)
Stock5,776
12 b
I2C
Internal
2.5 V ~ 5.25 V
-
-40°C ~ 85°C
Surface Mount
16-TSSOP (0.173", 4.40mm Width)
16-TSSOP
hot TSC2007IPWG4
Texas Instruments

IC TOUCH SCREEN 12BIT 16TSSOP

  • Touchscreen: 4 Wire Resistive
  • Resolution (Bits): 12 b
  • Interface: I2C, Serial
  • Voltage Reference: External
  • Voltage - Supply: 1.2 V ~ 3.6 V
  • Current - Supply: 226.2µA
  • 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)
Stock3,568
12 b
I2C, Serial
External
1.2 V ~ 3.6 V
226.2µA
-40°C ~ 85°C
Surface Mount
16-TSSOP (0.173", 4.40mm Width)
16-TSSOP
hot TSC2008IYZGR
Texas Instruments

IC CTRL TOUCH SCREEN SPI 12-WCSP

  • Touchscreen: 4 Wire Resistive
  • Resolution (Bits): 8 b, 12 b
  • Interface: SPI
  • Voltage Reference: External
  • Voltage - Supply: 1.2 V ~ 3.6 V
  • Current - Supply: -
  • Operating Temperature: -40°C ~ 85°C
  • Mounting Type: Surface Mount
  • Package / Case: 12-UFBGA, DSBGA
  • Supplier Device Package: 12-DSBGA
Package: 12-UFBGA, DSBGA
Stock60,612
8 b, 12 b
SPI
External
1.2 V ~ 3.6 V
-
-40°C ~ 85°C
Surface Mount
12-UFBGA, DSBGA
12-DSBGA
SX8676ICSTRT
Semtech Corporation

IC SCREEN CNTRL 12BIT 19WLCSP

  • 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: 19-UFBGA, WLCSP
  • Supplier Device Package: 19-WLCSP (2.07x2.07)
Package: 19-UFBGA, WLCSP
Stock7,200
12 b
I2C, Serial
Internal
2.3 V ~ 3.6 V
120µA
-40°C ~ 85°C
Surface Mount
19-UFBGA, WLCSP
19-WLCSP (2.07x2.07)
hot TSC2007IPWR
Texas Instruments

IC TOUCH SCREEN 12BIT 16TSSOP

  • Touchscreen: 4 Wire Resistive
  • Resolution (Bits): 12 b
  • Interface: I2C, Serial
  • Voltage Reference: External
  • Voltage - Supply: 1.2 V ~ 3.6 V
  • Current - Supply: 226.2µA
  • 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)
Stock162,432
12 b
I2C, Serial
External
1.2 V ~ 3.6 V
226.2µA
-40°C ~ 85°C
Surface Mount
16-TSSOP (0.173", 4.40mm Width)
16-TSSOP
hot TSC2017IYZGR
Texas Instruments

IC CTRLR TCH SCREEN I2C 12DSBGA

  • Touchscreen: 4 Wire Resistive
  • Resolution (Bits): 12 b
  • Interface: I2C, Serial
  • Voltage Reference: External
  • Voltage - Supply: 1.6 V ~ 3.6 V
  • Current - Supply: 226.2µA
  • Operating Temperature: -40°C ~ 85°C
  • Mounting Type: Surface Mount
  • Package / Case: 12-UFBGA, DSBGA
  • Supplier Device Package: 12-DSBGA
Package: 12-UFBGA, DSBGA
Stock191,760
12 b
I2C, Serial
External
1.6 V ~ 3.6 V
226.2µA
-40°C ~ 85°C
Surface Mount
12-UFBGA, DSBGA
12-DSBGA
CS8435AAT
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: -
Stock7,744
-
-
-
-
-
-
-
-
-
CS448T
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: -
Stock3,648
-
-
-
-
-
-
-
-
-
CP8300ATT
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: -
Stock5,888
-
-
-
-
-
-
-
-
-
CP8139ATT
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: -
Stock4,256
-
-
-
-
-
-
-
-
-
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: -
Stock5,616
-
-
-
-
-
-
-
-
-
CP8412AT
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: -
Stock7,312
-
-
-
-
-
-
-
-
-
CP8132CT
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: -
Stock2,640
-
-
-
-
-
-
-
-
-
CP8112AT
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: -
Stock2,400
-
-
-
-
-
-
-
-
-
CG8502AAT
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: -
Stock2,096
-
-
-
-
-
-
-
-
-
CG8510AAT
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: -
Stock5,680
-
-
-
-
-
-
-
-
-
CG8494AAT
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: -
Stock5,520
-
-
-
-
-
-
-
-
-
BU21029MUV-E2
Rohm Semiconductor

IC SCREEN CON 12BIT VQFN020V4040

  • 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 (TA)
  • Mounting Type: Surface Mount
  • Package / Case: 20-VFQFN Exposed Pad
  • Supplier Device Package: VQFN020V4040
Package: 20-VFQFN Exposed Pad
Stock6,544
12 b
I²C
External
1.65 V ~ 3.6 V
800µA
-20°C ~ 85°C (TA)
Surface Mount
20-VFQFN Exposed Pad
VQFN020V4040