Data Acquisition - Touch Screen Controllers

Category Introduction

Touch screen controllers are integrated circuits that provide an interface between the touch screen sensor array and the device the screen operates. The controller receives position information from the sensor array which is usually resistive or capacitive. In turn, the position information is passed along to a microcontroller via a serial, parallel, USB, or UART interface.

Product List

45 Items

Mfr Part #	Quantity Available	UnitPrice	Series	Packaging	Product Status	Touchscreen	Resolution (Bits)	Interface	Voltage Reference	Voltage - Supply	Current - Supply	Operating Temperature	Mounting Type	Package / Case	Supplier Device Package
TSC2007IPWR IC SCREEN CNTRL 12BIT 16TSSOP Texas Instruments	179	$2.97		Tape & Reel (TR)	Active	4 Wire Resistive	12 b	I²C, Serial	External	1.2V ~ 3.6V	226.2 µA	-40°C ~ 85°C	Surface Mount	16-TSSOP (0.173", 4.40mm Width)	16-TSSOP
TSC2046IPWR IC SCREEN CNTRL 12BIT 16TSSOP Texas Instruments	125	$2.95		Tape & Reel (TR)	Active	4 Wire Resistive	12 b	SPI	Internal	2.2V ~ 5.25V	780 µA	-40°C ~ 85°C	Surface Mount	16-TSSOP (0.173", 4.40mm Width)	16-TSSOP
AD7873ARUZ IC SCREEN CNTRL 12BIT 16TSSOP Analog Devices Inc.	72	$5.99		Tube	Active	4 Wire Resistive	12 b	Serial	External, Internal	2.2V ~ 5.25V	-	-40°C ~ 85°C	Surface Mount	16-TSSOP (0.173", 4.40mm Width)	16-TSSOP
TSC2046EIPWR IC SCREEN CNTRL 12BIT 16TSSOP Texas Instruments	160	$1.94		Tape & Reel (TR)	Active	4 Wire Resistive	12 b	SPI	Internal	2.2V ~ 5.25V	780 µA	-40°C ~ 85°C	Surface Mount	16-TSSOP (0.173", 4.40mm Width)	16-TSSOP
TSC2017IYZGR IC SCREEN CNTRL 12BIT 12DSBGA Texas Instruments	206	$3.50		Tape & Reel (TR)	Active	4 Wire Resistive	12 b	I²C, Serial	External	1.6V ~ 3.6V	226.2 µA	-40°C ~ 85°C	Surface Mount	12-UFBGA, DSBGA	12-DSBGA
AD7843ARQZ-REEL7 IC SCREEN CNTRL 12BIT 16QSOP Analog Devices Inc.	154	$3.72		Tape & Reel (TR)	Active	4 Wire Resistive	12 b	Serial	External	2.2V ~ 5.25V	-	-40°C ~ 85°C	Surface Mount	16-SSOP (0.154", 3.90mm Width)	16-QSOP
AD7873ARUZ-REEL7 IC SCREEN CNTRL 12BIT 16TSSOP Analog Devices Inc.	62	$5.80		Tape & Reel (TR)	Active	4 Wire Resistive	12 b	Serial	External, Internal	2.2V ~ 5.25V	-	-40°C ~ 85°C	Surface Mount	16-TSSOP (0.173", 4.40mm Width)	16-TSSOP
ADS7843E IC SCREEN CNTRL 12BIT 16SSOP Texas Instruments	92	$3.51		Bulk	Active	4 Wire Resistive	12 b	Serial	External	2.7V ~ 5V	2.5 µA	-40°C ~ 85°C	Surface Mount	16-SSOP (0.154", 3.90mm Width)	16-SSOP
ADS7843E/2K5 IC SCREEN CNTRL 12BIT 16SSOP Texas Instruments	316	$2.96		Tape & Reel (TR)	Active	4 Wire Resistive	12 b	Serial	External	2.7V ~ 5V	2.5 µA	-40°C ~ 85°C	Surface Mount	16-SSOP (0.154", 3.90mm Width)	16-SSOP
TSC2003IPWR IC SCREEN CNTRL 12BIT 16TSSOP Texas Instruments	221	$4.36		Tape & Reel (TR)	Active	4 Wire Resistive	12 b	I²C	Internal	2.5V ~ 5.25V	-	-40°C ~ 85°C	Surface Mount	16-TSSOP (0.173", 4.40mm Width)	16-TSSOP
ADS7846E/2K5 IC SCREEN CNTRL 12BIT 16SSOP Texas Instruments	27	$4.94		Tape & Reel (TR)	Active	4 Wire Resistive	12 b	SPI	External, Internal	2.2V ~ 5.25V	500 µA	-40°C ~ 85°C	Surface Mount	16-SSOP (0.154", 3.90mm Width)	16-SSOP
TSC2004IRTJR IC SCREEN CNTRL 12BIT 20QFN Texas Instruments	101	$5.14		Tape & Reel (TR)	Active	4 Wire Resistive	12 b	I²C, Serial	External	1.2V ~ 3.6V	797 µA	-40°C ~ 85°C	Surface Mount	20-WFQFN Exposed Pad	20-QFN (4x4)
AD7879-1ACPZ-500R7 IC SCREEN CNTRL 12BIT 16LFCSP Analog Devices Inc.	151	$5.23		Tape & Reel (TR)	Active	4 Wire Resistive	12 b	I²C, Serial	External	1.6V ~ 3.6V	-	-40°C ~ 85°C	Surface Mount	16-WQFN Exposed Pad, CSP	16-LFCSP-WQ (4x4)
AD7843ARUZ-REEL7 IC SCREEN CNTRL 12BIT 16TSSOP Analog Devices Inc.	66	$3.68		Tape & Reel (TR)	Active	4 Wire Resistive	12 b	Serial	External	2.2V ~ 5.25V	-	-40°C ~ 85°C	Surface Mount	16-TSSOP (0.173", 4.40mm Width)	16-TSSOP
ADS7846N/2K5 IC SCREEN CNTRL 12BIT 16TSSOP Texas Instruments	37	$4.92		Tape & Reel (TR)	Active	4 Wire Resistive	12 b	SPI	External, Internal	2.2V ~ 5.25V	500 µA	-40°C ~ 85°C	Surface Mount	16-TSSOP (0.173", 4.40mm Width)	16-TSSOP
AD7843ARUZ IC SCREEN CNTRL 12BIT 16TSSOP Analog Devices Inc.	237	$3.63		Bulk	Active	4 Wire Resistive	12 b	Serial	External	2.2V ~ 5.25V	-	-40°C ~ 85°C	Surface Mount	16-TSSOP (0.173", 4.40mm Width)	16-TSSOP
TSC2013QPWRQ1 IC SCREEN CNTRL 12BIT 16TSSOP Texas Instruments	102	$2.83	Automotive, AEC-Q100	Tape & Reel (TR)	Active	4 Wire Resistive	10, 12 b	I²C	External	1.2V ~ 3.6V	655 µA	-40°C ~ 125°C	Surface Mount	16-TSSOP (0.173", 4.40mm Width)	16-TSSOP
AD7843ARQZ IC SCREEN CNTRL 12BIT 16QSOP Analog Devices Inc.	51	$3.66		Bulk	Active	4 Wire Resistive	12 b	Serial	External	2.2V ~ 5.25V	-	-40°C ~ 85°C	Surface Mount	16-SSOP (0.154", 3.90mm Width)	16-QSOP
AD7873ACPZ IC SCREEN CNTRL 12BIT 16LFCSP Analog Devices Inc.	61	$6.07		Tray	Active	4 Wire Resistive	12 b	Serial	External, Internal	2.2V ~ 5.25V	-	-40°C ~ 85°C	Surface Mount	16-VQFN Exposed Pad, CSP	16-LFCSP-VQ (4x4)
AD7873ARQZ IC SCREEN CNTRL 12BIT 16QSOP Analog Devices Inc.	44	$6.06		Bulk	Active	4 Wire Resistive	12 b	Serial	External, Internal	2.2V ~ 5.25V	-	-40°C ~ 85°C	Surface Mount	16-SSOP (0.154", 3.90mm Width)	16-QSOP

About Touch Screen Controllers

What are Touch Screen Controllers?

Touch Screen Controllers

Touch Screen Controllers are integral components in the realm of data acquisition, serving as the interface between a touch-sensitive surface and the device's processing unit. They detect and interpret touch inputs, converting them into digital signals that the device can process. These controllers operate based on capacitive or resistive touch technology, where they measure changes in electrical properties or pressure to determine the location and nature of the touch. By facilitating seamless interaction between users and electronic devices, touch screen controllers have become pivotal in modern technology.

Types of Touch Screen Controllers

Capacitive Touch Screen Controllers

Capacitive touch screen controllers are widely used in smartphones and tablets due to their high sensitivity and multi-touch capabilities. They work by detecting changes in capacitance when a conductive object, like a finger, comes into contact with the screen. These controllers are known for their durability and ability to support gestures such as pinching and swiping.

Resistive Touch Screen Controllers

Resistive touch screen controllers are often found in industrial and medical applications where precision is crucial. They function by detecting pressure applied to the screen, which causes two conductive layers to make contact. While they may not support multi-touch, they are highly accurate and can be operated with a stylus or gloved hand.

Infrared Touch Screen Controllers

Infrared touch screen controllers utilize an array of infrared LEDs and photodetectors to create an invisible grid over the screen. When an object interrupts the grid, the controller determines the touch location. These are used in large displays and kiosks due to their ability to detect any touch object and their robustness in various lighting conditions.

Surface Acoustic Wave (SAW) Touch Screen Controllers

SAW touch screen controllers employ ultrasonic waves that travel over the screen surface. When a touch occurs, it absorbs part of the wave, allowing the controller to pinpoint the touch location. Known for their clarity and durability, these controllers are used in high-end applications like ATMs and information kiosks.

How to choose Touch Screen Controllers?

When selecting a touch screen controller, several key parameters should be considered:

Touch Technology: Choose between capacitive, resistive, infrared, or SAW based on application needs.
Resolution and Sensitivity: Ensure the controller can accurately detect touch inputs with the required precision.
Environmental Conditions: Consider factors such as temperature, humidity, and exposure to elements that may affect performance.
Interface Compatibility: Verify that the controller is compatible with the device's operating system and hardware interface.
Supplier Reliability: Evaluate the supplier's reputation, customer reviews, and warranty offerings to ensure product quality and support.

Installation requirements should also be assessed, including the physical integration into the device and any necessary calibration procedures.

Applications of Touch Screen Controllers

Consumer Electronics

In consumer electronics, touch screen controllers are ubiquitous in smartphones, tablets, and smartwatches, providing intuitive user interfaces that support gestures and multi-touch functionalities.

Automotive Industry

Touch screen controllers are increasingly used in automotive infotainment systems, enabling drivers and passengers to interact with navigation, audio, and climate control systems through a centralized touch interface.

Healthcare Sector

In healthcare, touch screen controllers facilitate the operation of medical devices and diagnostic equipment, allowing for precise input and control in sterile environments where traditional input methods may be impractical.

Industrial Automation

In industrial settings, touch screen controllers are employed in human-machine interfaces (HMIs) to control machinery and monitor processes, offering robust and reliable performance in harsh environments.

Retail and Hospitality

Touch screen controllers are integral to point-of-sale systems and self-service kiosks in retail and hospitality, enhancing customer interaction and streamlining transactions.