Data Acquisition - Touch Screen Controllers

Part Number	Description / PDF	Quantity
TSC2004IRTJT Texas Instruments	IC SCREEN CNTRL 12BIT 20QFN	1968
AT42QT4160-MU Atmel (Microchip Technology)	QFIELD 10-BIT TOUCHSCREEN SENSOR	5987
TSC2046IPWR Texas Instruments	IC SCREEN CNTRL 12BIT 16TSSOP	6050
TSC2007IPWR Texas Instruments	TSC2007 12-BIT, NANOPOWER, 4-WIR	48474
CYTMA545-48LQI36AA IR (Infineon Technologies)	IC SCREEN CNTRL 32BIT 48QFN	200
TSC2007IYZGR Texas Instruments	IC SCREEN CNTRL 12BIT 12DSBGA	1877
AD7889-1ACBZ-RL7 Analog Devices, Inc.	12-BIT SAR ADC, 2 CHANNEL	938690
TSC2046IPWG4 Texas Instruments	IC SCREEN CNTRL 12BIT 16TSSOP	0
TSC2007IPWG4 Texas Instruments	IC SCREEN CNTRL 12BIT 16TSSOP	0
LM8500HVA9	CONSUMER CIRCUIT, PQCC44	1694
TSC2007IPW Texas Instruments	IC SCREEN CNTRL 12BIT 16TSSOP	277
AD7873BRQ Analog Devices, Inc.	ADC 12BIT TOUCHSCREEN	307
AR1011T-I/SS Roving Networks / Microchip Technology	IC SCREEN CNTRL 10BIT 20SSOP	2398
AD7873ACP-REEL7 Analog Devices, Inc.	TOUCH SCREEN DIGITIZER	3000
AD7889-1ACBZ-RL Analog Devices, Inc.	12-BIT SAR ADC, 2 CHANNEL	10000
TSC2200IRHB Texas Instruments	TSC2200 PROGRAMMABLE 4-WIRE TOUC	258
AD7873ARUZ-REEL Analog Devices, Inc.	TOUCH SCREEN DIGITIZER	834
TSC2200IPW Texas Instruments	IC SCREEN CNTRL 12BIT 28TSSOP	875
TSC2301IPAGG4 Texas Instruments	IC SCREEN CNTRL 12BIT 64TQFP	0
AD7879WARUZ-RL7 Analog Devices, Inc.	IC SCREEN CNTRL 12BIT 16TSSOP	727

Data Acquisition - Touch Screen Controllers

1. Overview

Touch screen controllers (TSCs) are specialized integrated circuits designed to process signals from touch-sensitive surfaces and convert them into digital data for host systems. These ICs serve as the interface between touch sensors and processing units, enabling precise position detection, gesture recognition, and pressure sensitivity. With the proliferation of touch-enabled devices in consumer electronics, industrial automation, and automotive systems, TSCs have become critical components for human-machine interaction (HMI).

2. Main Types & Functional Classification

Type	Functional Features	Application Examples
Capacitive TSC	Supports multi-touch, high sensitivity, glass overlay compatibility	Smartphones, tablets, industrial HMIs
Resistive TSC	Single-touch detection, low cost, glove operation capability	ATMs, medical devices, POS terminals
Optical TSC	Edge-mounted sensors, high durability, large-format support	Digital signage, interactive kiosks
Force-Sensing TSC	Pressure measurement with haptic feedback integration	Gaming consoles, automotive controls

3. Structure & Composition

A typical TSC IC includes: 1) Sensor interface circuitry for signal conditioning, 2) Analog-to-digital converter (ADC) for position data digitization, 3) Digital signal processor (DSP) for coordinate calculation, 4) Communication interface (I2C/SPI) for host connection, and 5) Power management module. Advanced designs integrate noise suppression algorithms and self-capacitance/projection-capacitance detection architectures.

4. Key Technical Specifications

Parameter	Description & Importance
Resolution	Position accuracy (e.g., 0.1mm), determines touch precision
Sampling Rate	Up to 200Hz for smooth gesture tracking
Power Consumption	Typically <100 A for mobile devices
Touch Points	Support for 5-10 point simultaneous detection
ESD Protection	8kV contact discharge immunity
Operating Temperature	-40 C to +85 C for industrial applications

5. Application Fields

Consumer Electronics: Smartphones (Apple iPhone, Samsung Galaxy), Wearables (Apple Watch)
Industrial Automation: Programmable logic controllers with HMI
Medical Equipment: Ultrasound imaging touch panels
Automotive Systems: Tesla Model S central console
Retail & POS: Square Terminal, Amazon Go checkout systems

6. Leading Manufacturers & Products

Manufacturer	Product Series	Key Features
Texas Instruments	TSC34XX	12-bit resolution, 4-wire resistive sensing
STMicroelectronics	STMPE8050	Capacitive controller with 10-touch detection
Synaptics	ClearPad 36000	Optimized for curved displays
Microchip	maXTouch T9	Low-power mode for IoT devices

7. Selection Guidelines

Key considerations include: 1) Sensor type compatibility (capacitive/resistive), 2) Required touch resolution and sampling rate, 3) Power budget constraints, 4) Electromagnetic interference (EMI) immunity requirements, 5) Host processor interface compatibility (I2C/SPI), 6) Operating environment conditions (temperature/humidity), and 7) Cost-effectiveness for target application. For example, automotive applications require AEC-Q100 certified components with extended temperature ranges.

8. Industry Trends

Future development focuses on: 1) Integration with AI algorithms for predictive touch recognition, 2) Enhanced force-sensing capabilities (4D touch), 3) Flexible and foldable display compatibility, 4) Ultra-low-power designs with wake-on-touch functionality, and 5) Advanced security features for biometric authentication. The market is projected to grow at 7.2% CAGR through 2027, driven by AR/VR and autonomous vehicle HMI demands.