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HomeProductsIntegrated Circuits (ICs)Data Acquisition - Touch Screen ControllersTSC2102IDA
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TSC2102IDA - Texas Instruments

Manufacturer Part Number
TSC2102IDA
Manufacturer
Texas Instruments
Allelco Part Number
32D-TSC2102IDA
Warranty
1 Year Allelco Warranty - Find out more
Stock Status:
6,089 pcs available, New & Original
Parts Description
IC SCREEN CNTRL 12BIT 32TSSOP
Package
32-TSSOP
Data sheet
-
RoHs Status
ROHS3 Compliant
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Our certification
In stock: 6089
  • Unit Price: $1.755
  • Subtotal: $0.00

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Add to Cart and Submit RFQ now, we'll contact you immediately.

Quantity Unit Price Ext. Price
1+ $1.755 $1.76
10+ $1.516 $15.16
30+ $1.366 $40.98
100+ $1.212 $121.20
500+ $1.142 $571.00
1000+ $1.112 $1,112.00
The above prices does not include taxes and freight rates, which will be calculated on the order pages.

Specifications

TSC2102IDA Tech Specifications
Texas Instruments - TSC2102IDA technical specifications, attributes, parameters and parts with similar specifications to Texas Instruments - TSC2102IDA

Product Attribute Attribute Value
Manufacturer Texas Instruments
Voltage Reference External, Internal
Voltage - Supply 2.7V ~ 3.6V
Touchscreen 4 Wire Resistive
Supplier Device Package 32-TSSOP
Series -
Resolution (Bits) 12 b
Product Attribute Attribute Value
Package / Case 32-TSSOP (0.240', 6.10mm Width)
Package Tray
Operating Temperature -40°C ~ 85°C
Mounting Type Surface Mount
Interface SPI
Current - Supply 65 µA
Base Product Number TSC2102

Environmental & Export Classifications

ATTRIBUTE DESCRIPTION
RoHs Status ROHS3 Compliant
Moisture Sensitivity Level (MSL) 2 (1 Year)
REACH Status REACH Unaffected
ECCN EAR99
HTSUS 8542.39.0001

Parts Introduction

TSC2102IDA Image
TSC2102IDA (1)

Manufacturer Part Number

TSC2102IDA

Manufacturer

Texas Instruments

Introduction

The TSC2102IDA is a touch screen controller designed for interfacing with 4-wire resistive touch screens, offering a precise 12-bit resolution.

Product Features and Performance

Supports 4-wire resistive touchscreen

12-bit resolution for accurate touch detection

SPI interface for communication with microcontrollers

Dual voltage reference options (external and internal)

Low power consumption with supply current of 65 µA

Wide operating temperature range (-40°C to 85°C)

Surface mount, 32-TSSOP package

Product Advantages

High resolution enhances touch sensitivity

Flexible interface options ensure compatibility with various MCUs

Low power requirement helps in designing energy-efficient applications

Robust operating temperature makes it suitable for harsh environments

Key Technical Parameters

Touchscreen Type: 4 Wire Resistive

Resolution: 12 bits

Interface: SPI

Voltage Reference: External, Internal

Voltage Supply: 2.7V to 3.6V

Current Supply: 65 µA

Operating Temperature: -40°C to 85°C

Mounting Type: Surface Mount

Package/Case: 32-TSSOP

Quality and Safety Features

Built according to Texas Instruments' quality manufacturing standards

Reliable performance in extended temperature ranges

Compatibility

Compatible with a variety of microcontrollers via SPI interface

Supports both external and internal voltage references

Application Areas

Mobile devices

Personal digital assistants (PDAs)

Portable instrumentation

Touch panels

Product Lifecycle

Currently active with no near-term discontinuation planned

Future replacements or upgrades envisaged if technology evolves

Several Key Reasons to Choose This Product

High resolution improves interaction precision with touch screens

Support for multiple voltage references increases design flexibility

Low power consumption benefits battery-operated portable devices

Durable in extreme conditions, suitably designed for a wide range of applications

Reliable product support and longevity, ensuring continuous operation and integration in designsabre

Frequently Asked Questions(FAQ)

How does the TSC2102IDA’s power consumption compare to alternative touchscreen controllers in low-power battery-operated devices?
The TSC2102IDA draws 65 µA of supply current during normal operation, which is competitive for its class. When compared to similarly featured 4-wire resistive touchscreen controllers, this level of quiescent current enables extended battery life in portable instrumentation and handheld equipment. While some newer solutions integrate additional power-saving modes or use lower-voltage logic thresholds, the TSC2102IDA’s balance between resolution, interface speed, and power efficiency makes it suitable for applications where moderate sampling rates are acceptable. Its 2.7V to 3.6V operating range also aligns well with single-cell Li-ion or alkaline battery systems common in embedded sensing platforms.
What design considerations arise when integrating the TSC2102IDA into a system requiring precise touch detection under varying environmental conditions?
Environmental stability depends heavily on proper analog front-end design, as the TSC2102IDA performs A/D conversion using voltage measurement principles sensitive to parasitic capacitance and noise. At -40°C to +85°C, temperature drift can affect contact resistance and signal integrity, particularly if guard traces or driven-shield techniques aren’t implemented. Additionally, since the device relies on external drive voltages (typically VDD or a regulated analog supply), maintaining clean decoupling and stable reference levels is critical. Calibration routines may be necessary to compensate for baseline shifts across temperature extremes, especially in industrial or automotive edge cases.
Can the TSC2102IDA support multi-touch functionality, and what limitations exist due to its 4-wire resistive architecture?
No, the TSC2102IDA does not support multi-touch detection because it is designed exclusively for 4-wire resistive touchscreens. These screens measure coordinate data through voltage gradients along orthogonal axes, which inherently limits them to single-point input. Unlike capacitive alternatives, 4-wire resistive technology cannot distinguish between multiple simultaneous contacts. Therefore, the TSC2102IDA is best suited for applications where single-touch interaction suffices—such as basic keypads, calibration interfaces, or legacy human-machine interfaces—rather than modern gesture-based UIs.
How does the 12-bit resolution of the TSC2102IDA impact touch accuracy in high-precision measurement scenarios?
With 12-bit resolution, the TSC2102IDA provides 4096 discrete steps across the full-scale voltage range of the touchscreen. This granularity supports sub-millimeter positional accuracy under ideal conditions, assuming linear response from the screen and consistent electrode resistance. In practice, however, mechanical tolerances, material aging, and environmental factors often limit usable precision to around 8–10 bits. For most resistive touch applications requiring coarse positioning or button-like behavior, 12 bits offer more than adequate resolution. But in metrology-grade systems demanding micron-level repeatability, higher-resolution ADCs coupled with active compensation would be preferable.
What SPI configuration trade-offs should engineers consider when interfacing the TSC2102IDA with microcontrollers?
The TSC2102IDA uses a standard SPI interface, but its command structure and timing requirements introduce constraints. For example, initiating a scan requires sending a specific register write sequence, followed by polling status registers until data is ready. This adds software overhead compared to interrupt-driven or DMA-capable peripherals. Engineers must also account for propagation delays inherent in the 4-wire switching matrix and ensure sufficient clock margin during data readout. If the host MCU runs at low frequencies or lacks dedicated SPI hardware, CPU utilization can increase significantly during active sampling periods.
How does the TSC2102IDA compare to the TSC2101 in terms of internal voltage references and external component requirements?
The TSC2102IDA includes both an internal bandgap voltage reference and allows external reference selection, offering flexibility for noise-sensitive designs. In contrast, the TSC2101 typically relies solely on an external reference. This means the TSC2102IDA can operate without additional components when moderate accuracy is acceptable, reducing BOM count. However, for applications requiring tight linearity or long-term stability, an external precision reference may still be preferred. Both share the same core architecture, so pin compatibility exists, but firmware differences arise from reference handling and calibration algorithms.
What layout precautions are essential to minimize crosstalk and noise coupling in PCB designs using the TSC2102IDA?
Given the analog nature of touchscreen measurements, careful routing of X+, X−, Y+, and Y− lines is critical. These signals should avoid crossing digital traces, especially high-speed clocks or switching regulators. Guard rings connected to a quiet analog ground plane help isolate sensitive nodes. Additionally, the TSC2102IDA’s package has exposed pads that require proper thermal relief and solder fillets to ensure reliable connections while minimizing parasitic inductance. Decoupling capacitors near the VDD pin—ideally placed within 1 mm—are non-negotiable to stabilize supply transients during switching events.
Is the TSC2102IDA suitable for medical or safety-critical applications requiring formal qualification?
While the TSC2102IDA meets standard commercial-grade specifications and is RoHS3 compliant, it is not pre-qualified for functional safety standards such as IEC 62304 or ISO 13485. Its documentation lacks failure mode analysis, diagnostic coverage metrics, or fault injection test results required for certification. Therefore, it should not be used in Class II medical devices or other systems where systematic failure could result in injury without redundancy or built-in self-test mechanisms. For general-purpose instrumentation or consumer electronics, however, it offers robust performance within its defined operating envelope.

Parts with Similar Specifications

The three parts on the right have similar specifications to Texas Instruments TSC2102IDA

Product Attribute TSC2102BIDA TSC2102IDAR TSC2102BIDAR TSC2101IRGZ
Part Number TSC2102BIDA TSC2102IDAR TSC2102BIDAR TSC2101IRGZ
Manufacturer Texas Instruments Texas Instruments Texas Instruments Texas Instruments
Mounting Type - Surface Mount Through Hole Surface Mount
Touchscreen - - - -
Interface - - - -
Base Product Number - DAC34H84 MAX500 ADS62P42
Supplier Device Package - 196-NFBGA (12x12) 16-PDIP 64-VQFN (9x9)
Series - - - -
Current - Supply - - - -
Package / Case - 196-LFBGA 16-DIP (0.300', 7.62mm) 64-VFQFN Exposed Pad
Voltage Reference - - - -
Operating Temperature - -40°C ~ 85°C 0°C ~ 70°C -40°C ~ 85°C
Package - Tape & Reel (TR) Tube Tape & Reel (TR)
Resolution (Bits) - - - -
Voltage - Supply - - - -

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Customer Reviews

Evaluation: 10 Articles

  • Nath***rooks
    Jun 11, 2026

    Installed this power component in a converter board. Output remained stable under different load conditions and thermal performance was better than expected.

  • Dani***alkerTech
    Jun 1, 2026

    Product works, but setup took more effort than expected. Once configured the MCU ran reliably, although documentation support felt older compared with newer platforms. Fine for maintenance projects.

  • Yuki***aka88
    May 26, 2026

    信号通信プロジェクトでこのRS-485トランシーバーを使用しました。設置は簡単で、長距離ケーブルでも通信は安定していました。消費電力も、以前使用していたものより低くなっています。

  • Stev***aker
    May 20, 2026

    Solid diode for power rectification. Works well in switching circuits.

  • Bran***Lewis
    May 11, 2026

    Compact FPGA with good performance. Suitable for basic signal processing tasks.

  • Oliv***arris
    May 7, 2026

    Reliable I/O expander. Works well in embedded control applications.

  • Jess***Jones
    Apr 17, 2026

    It offers good value for the price, and the specifications match the description. I’ve been using it for two days with no issues, and I’ll definitely buy it again if I need it in the future.

  • Mich***Smith
    Apr 17, 2026

    Shipping was on time, the component pins are neatly aligned, and I tested 10 of them with a multimeter—all readings were within the specified range. Highly recommended.

  • Aman***arris
    Apr 3, 2026

    It was great—the entire process, from placing the order to receiving the package, went very smoothly. The components were consistent, the price was fair, and I had a very pleasant shopping experience.

  • Mike***nch
    Apr 3, 2026

    Better than expected! The resistance and capacitance readings were spot-on, and it passed the test on the first try. The service was reliable, and the packaging was thoughtful—I highly recommend it.

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Shipment

Delivery Time

In-stock items can be shipped within 24 hours. Some parts will be arranged for delivery within 1-2 days from the date all items arrive at our warehouse. And Allelco ships order once a day at about 17:00, except Sunday. Once the goods are shipped, the estimated delivery time depends on the shipping methods and Delivery destination. The table below shows are the logistic time for some common countries.

Delivery Cost

  1. Use your express account for shipment if you have one.
  2. Use our account for the shipment. Refer to the table below for the approximate charges.
(Different time frame / countries / package size has different price.)

Delivery Method

  1. Global Common Shipment by DHL / UPS / FedEx / TNT / EMS / SF we support.
  2. Others more shipping ways, please get in touch with your customer manager.

Common Countries Logistic Time Reference
Region Country Logistic Time(Day)
America United States 5
Brazil 7
Europe Germany 5
United Kingdom 4
Italy 5
Oceania Australia 6
New Zealand 5
Asia India 4
Japan 4
Middle East Israel 6
DHL & FedEx Shipment Charges Reference
Shipment charges(KG) Reference DHL(USD$)
0.00kg-1.00kg USD$30.00 - USD$60.00
1.00kg-2.00kg USD$40.00 - USD$80.00
2.00kg-3.00kg USD$50.00 - USD$100.00
Note:
The above table is for reference only. There may have some data bias for the uncontrollable factors.
Contact us if you have any questions.
  • QC (Quality Warranty)
  • Payment Support
  • Packaging
  • Certifications & Memberships

QC (Quality Warranty)

Allelco is committed to exceeding customer expectations through customer service excellence, order accuracy, and on-time delivery.
This is achieved through our commitment to the continual improvement of our processes, services, and products.


Strict quality inspection builds a solid foundation for electronic component quality.
  1. Visual inspection
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We eliminate defective components and ensure the stable operation of electronic devices through professional quality standards.
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Packaging

Electrostatic Discharge Protection and Handling

All electrostatic-sensitive components are handled in accordance with electrostatic discharge control procedures. The products are hermetically sealed in anti-static safe packaging to prevent electrostatic damage. Appropriate labeling is also applied for identification and traceability. This ensures product integrity during storage, handling and transportation.


ESD

Certifications & Memberships

Third-party certified, strict quality control. Our certification
  • ISO 9001: 2015
  • ISO 13485: 2016
  • ISO 14001: 2015
  • ISO 28000: 2007
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TSC2102IDA Image

TSC2102IDA

Texas Instruments
32D-TSC2102IDA

Want a better price? Add to Cart and Submit RFQ now, we'll contact you immediately.

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