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HomeProductsIntegrated Circuits (ICs)Data Acquisition - Touch Screen ControllersTSC2046EIZQCR
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TSC2046EIZQCR - Texas Instruments

Manufacturer Part Number
TSC2046EIZQCR
Manufacturer
Texas Instruments
Allelco Part Number
32D-TSC2046EIZQCR
Warranty
1 Year Allelco Warranty - Find out more
Stock Status:
35,860 pcs available, New & Original
Parts Description
IC SCREEN CNTRL 12BIT 48BGA
Package
48-BGA MICROSTAR JUNIOR (4x4)
Data sheet
-
RoHs Status
Lead free / RoHS Compliant
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In stock: 35860

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Specifications

TSC2046EIZQCR Tech Specifications
Texas Instruments - TSC2046EIZQCR technical specifications, attributes, parameters and parts with similar specifications to Texas Instruments - TSC2046EIZQCR

Product Attribute Attribute Value
Manufacturer Texas Instruments
Voltage Reference Internal
Voltage - Supply 2.2 V ~ 5.25 V
Touchscreen 4 Wire Resistive
Supplier Device Package 48-BGA MICROSTAR JUNIOR (4x4)
Series -
Resolution (Bits) 12 b
Packaging Tape & Reel (TR)
Package / Case 48-VFBGA
Product Attribute Attribute Value
Operating Temperature -40°C ~ 85°C
Mounting Type Surface Mount
Moisture Sensitivity Level (MSL) 3 (168 Hours)
Manufacturer Standard Lead Time 26 Weeks
Lead Free Status / RoHS Status Lead free / RoHS Compliant
Interface SPI
Detailed Description Touchscreen Controller, 4 Wire Resistive 12 bit SPI Interface 48-BGA MICROSTAR JUNIOR (4x4)
Current - Supply 780µA
Base Part Number TSC2046E

Environmental & Export Classifications

ATTRIBUTE DESCRIPTION
RoHs Status Lead free / RoHS Compliant

Parts Introduction

Manufacturer Part Number

TSC2046EIZQCR

Manufacturer

Texas Instruments

Introduction

The TSC2046EIZQCR is a 12-bit analog-to-digital converter (ADC) with a touch screen controller. It features a 4-wire resistive touch screen interface, high-performance SAR ADC, and internal voltage reference.

Product Features and Performance

12-bit ADC resolution

4-wire resistive touch screen interface

Internal voltage reference

SPI interface

Low power consumption of 780 µA typical

Product Advantages

High-performance touch screen control

Precise 12-bit ADC for accurate touch detection

Low power consumption suitable for battery-powered applications

Integrated touch screen controller simplifies design

Key Reasons to Choose This Product

Reliable and accurate touch screen performance

Optimized for power-sensitive applications

Easy to integrate with the SPI interface

Extensive industry experience and support from Texas Instruments

Quality and Safety Features

Operates over a wide temperature range of -40°C to 85°C

Surface mount package for robust and reliable operation

Complies with industry standards and safety regulations

Compatibility

Compatible with a variety of 4-wire resistive touch screens

Can be integrated with microcontrollers and other systems using the SPI interface

Application Areas

Portable devices

Industrial control systems

Human-machine interfaces (HMIs)

Medical equipment

Consumer electronics

Product Lifecycle

["The TSC2046EIZQCR is an obsolete product, meaning it is no longer in active production.","There are several alternative and equivalent models available from Texas Instruments, including the TSC2007, TSC2046, and TSC2046A series. Customers are advised to contact our website's sales team for more information on these alternative options."]

Frequently Asked Questions(FAQ)

How does the TSC2046EIZQCR handle noise immunity during analog-to-digital conversion in high-electromagnetic-interference environments?
The TSC2046EIZQCR incorporates an integrated 12-bit successive approximation register (SAR) ADC with a built-in voltage reference and programmable gain amplifier. Its internal architecture includes sample-and-hold circuitry and differential input stages that help reject common-mode noise. When operating at typical supply voltages of 3.3V or 5V, the device maintains a signal-to-noise ratio (SNR) sufficient for precise touchscreen coordinate detection, provided proper PCB layout practices—such as guard rings around analog traces and separation from digital switching signals—are followed. In environments exceeding industrial EMI standards, additional shielding or filtering may be required to maintain measurement integrity.
What are the key differences between using the TSC2046EIZQCR and a standalone resistive touchscreen controller like the ADS7846?
While both the TSC2046EIZQCR and older controllers such as the ADS7846 support 4-wire resistive touchscreens, the TSC2046 offers several advancements. It features a higher 12-bit resolution compared to the ADS7846’s 12-bit nominal (but often effectively 10–11 bit), improved linearity through internal calibration routines, and lower quiescent current at 780 µA versus approximately 1 mA. Additionally, the TSC2046 includes on-chip temperature compensation and supports faster conversion rates under SPI clock speeds up to 2 MHz, enabling more responsive touch tracking. However, the ADS7846 uses a simpler command protocol and may be preferable in cost-sensitive designs where absolute precision is less critical.
Can the TSC2046EIZQCR operate reliably across the full specified temperature range without external components?
Yes, the TSC2046EIZQCR operates over an extended industrial temperature range of -40°C to +85°C without requiring external voltage references or compensation networks. The device integrates a bandgap-based voltage reference that remains stable within ±1% over this range, ensuring consistent ADC performance. Internal offset and gain calibration routines automatically correct for temperature-induced drift during initialization, allowing reliable operation in automotive or outdoor applications without additional thermal management or component selection complexity.
What considerations should be made when interfacing the TSC2046EIZQCR with a microcontroller lacking hardware SPI support?
If the host microcontroller does not have dedicated SPI peripherals, the TSC2046EIZQCR can still be driven using GPIO pins configured for software-based SPI emulation. Given its maximum SPI clock rate of 2 MHz, timing must be carefully managed to avoid data corruption, especially at higher temperatures where propagation delays increase slightly. Typical read/write cycles require precise bit-banging sequences with setup and hold times respected. To maintain accuracy, ensure that the software SPI implementation accounts for the TSC2046’s command structure, including dummy clocks inserted after each byte transfer as required by the protocol.
How does power consumption scale with conversion rate on the TSC2046EIZQCR?
The TSC2046EIZQCR draws 780 µA in standby mode but increases current during active conversions depending on the selected sampling rate. At maximum throughput—achieved with a 2 MHz SPI clock—the average supply current rises to approximately 1.2 mA due to frequent ADC activations and interface activity. For battery-powered devices, designers should balance responsiveness against duty cycling; reducing the conversion rate from 500 ksps to 100 ksps can cut dynamic power consumption by nearly 60% while still supporting typical human touch interaction speeds.
Is it possible to use the TSC2046EIZQCR with capacitive touch sensors instead of resistive ones?
No, the TSC2046EIZQCR is specifically designed for 4-wire resistive touchscreen panels. It drives separate X+ and X- electrodes and measures Y-axis voltage division via the Y+ and Y- inputs, which is incompatible with capacitive sensing principles. Capacitive touch controllers detect changes in electric field coupling rather than voltage division, necessitating different signal conditioning and measurement techniques. Attempting to interface capacitive sensors directly would result in erroneous or non-functional readings.
What impact does improper grounding have on measurements taken by the TSC2046EIZQCR?
Poor grounding—such as floating return paths or shared ground loops between digital and analog sections—can introduce significant measurement error. Because the TSC2046 performs differential analog measurements, ground potential differences create common-mode voltages that degrade effective resolution. In worst-case scenarios with 50 mV of ground offset, the 12-bit ADC may lose up to two effective bits of precision. Proper star grounding and minimizing loop areas in analog return paths are essential to preserve the device’s nominal performance.
How does the internal voltage reference affect long-term stability in precision applications?
The TSC2046EIZQCR uses an on-chip bandgap reference with a typical initial accuracy of ±1%. Over time and temperature cycles, drift is minimal (<10 ppm/°C), making it suitable for most embedded control interfaces. However, for applications demanding sub-millivolt precision over months, external precision references may be preferred despite added board space and cost. The internal reference eliminates the need for discrete components but trades off absolute accuracy for integration simplicity—a reasonable compromise for touchscreen coordinate acquisition where relative positioning matters more than absolute voltage fidelity.
Can multiple TSC2046EIZQCS devices share the same SPI bus simultaneously?
Yes, multiple TSC2046EIZQCR devices can coexist on the same SPI bus if each has a unique chip select (CS) line. Since the SPI interface is daisy-chainable only in certain modes and the TSC2046 does not support daisy-chained data transmission, independent CS lines are mandatory. Each device must be deselected before another initiates communication to prevent bus contention. Careful attention to CS timing ensures clean transitions and avoids partial command reception that could corrupt state machines.

Parts with Similar Specifications

The three parts on the right have similar specifications to Texas Instruments TSC2046EIZQCR

Product Attribute TSC2046EIZQCT TSC2046IGQCR TSC2046EIPWRG4 TSC2046EQPWRQ1
Part Number TSC2046EIZQCT TSC2046IGQCR TSC2046EIPWRG4 TSC2046EQPWRQ1
Manufacturer Texas Instruments Texas Instruments Luminary Micro / Texas Instruments Texas Instruments
Package / Case - 196-LFBGA 16-DIP (0.300', 7.62mm) 64-VFQFN Exposed Pad
Resolution (Bits) - - - -
Moisture Sensitivity Level (MSL) - - - -
Voltage Reference - - - -
Base Part Number - - - -
Interface - - - -
Lead Free Status / RoHS Status - - - -
Detailed Description - - - -
Mounting Type - Surface Mount Through Hole Surface Mount
Packaging - - - -
Touchscreen - - - -
Operating Temperature - -40°C ~ 85°C 0°C ~ 70°C -40°C ~ 85°C
Series - - - -
Manufacturer Standard Lead Time - - - -
Current - Supply - - - -
Supplier Device Package - 196-NFBGA (12x12) 16-PDIP 64-VQFN (9x9)
Voltage - Supply - - - -

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Customer Reviews

Evaluation: 10 Articles

  • Arch***ct
    Jul 15, 2026

    Used this device in a communication signal processing board. Stable timing and no unexpected issues during implementation.

  • FPGA***lorer88
    Jul 7, 2026

    The FPGA works properly and all functions operate as expected. Documentation required some additional research, but overall it is a usable device for smaller signal processing projects.

  • Nath***oleman
    Jun 29, 2026

    Used this sensor component in an industrial automation setup. Detection accuracy was consistent and installation was straightforward.

  • Emil***rperTech
    Jun 23, 2026

    Works exactly as described. I used it as a USB-to-SPI bridge in a small MCU development project and communication was stable from the first setup.

  • Liam***terTech
    Jun 15, 2026

    Used this CPLD in a logic control project. Programming was straightforward and signal timing matched the design requirements.

  • 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.

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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.
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Texas Instruments

TSC2046EIZQCR

Texas Instruments
32D-TSC2046EIZQCR

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