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Texas Instruments TSC2006IRTJTG4
- Part No.:
- TSC2006IRTJTG4
- Manufacturer:
- Texas Instruments
- Category:
- Touch Screen Controllers
- Package:
- 20-WFQFN Exposed Pad
- Datasheet:
-
TSC2006IRTJTG4.pdf
- Description:
- IC SCREEN CNTRL 12BIT 20QFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,511
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Product details
Overview
TSC2006IRTJTG4 from Texas Instruments is a 12-bit, nanopower, 4-wire resistive touch screen controller with SPI interface, designed for ultra-low-voltage handheld systems. It operates from 1.2V to 3.6V, integrates SAR ADC, internal oscillator, temperature sensor, and touch pressure measurement, and delivers 707µW typical power at 1.8V/50SSPS - enabling battery-powered PDA, MP3 player, and portable instrument interfaces.
For engineers reviewing the TSC2006IRTJTG4 datasheet, TSC2006IRTJTG4 pinout, TSC2006IRTJTG4 application, or TSC2006IRTJTG4 equivalent, key selection considerations include its programmable 10/12-bit resolution, ratiometric conversion support, integrated PENIRQ/DAV interrupt logic, ±8kV HBM ESD rating on X/Y inputs, and QFN-20 package compatibility with space-constrained human-interface designs.
Technical Context
The TSC2006IRTJTG4 implements a register-controlled, state-machine-driven architecture for autonomous 4-wire touch coordinate acquisition. Its internal 3.3–4.3MHz oscillator drives the SAR ADC (fADC = fOSC/2), while preprocessing logic reduces host bus activity via configurable sampling rates, averaging, and auto-power-down modes.
It supports SPI Mode 0 (CPOL=0, CPHA=0) up to 25MHz, with byte-aligned command cycles (8 SCLK for Byte 1, 24 SCLK for Byte 0). The device performs ratiometric A/D conversion using either external VREF or SNSVDD, and includes dedicated analog front-end switches (X+/X−/Y+/Y−) with ≤6Ω on-resistance and integrated temperature sensing via TEMP1/TEMP2 diodes.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | Programmable 10-bit or 12-bit SAR ADC - enables trade-off between precision (4096 steps) and speed in touch coordinate digitization. |
| Supply Range | 1.2V to 3.6V on SNSVDD and I/OVDD - supports single-cell Li-ion or alkaline battery operation without LDO. |
| Power Consumption | 707µW at 1.8V/50SSPS; 69µW at 1.6V/8.2kSPS equivalent rate - extends runtime in always-on touch detection modes. |
| SPI Interface | Mode 0 (CPOL=0, CPHA=0), up to 25MHz clock - ensures interoperability with ARM Cortex-M, MSP430, and low-voltage microcontrollers. |
| ESD Rating | ±8kV HBM, ±25kV air-gap, ±12kV contact on X+/X−/Y+/Y− - eliminates need for external TVS diodes in consumer handhelds. |
| Temperature Sensing | Differential method with ±2°C accuracy at 3V SNSVDD - provides on-chip thermal monitoring without external sensor. |
| Operating Temp | –40°C to +85°C industrial range - qualified for use in automotive infotainment displays and ruggedized portable instruments. |
Pinout & Package
Package: 20-pin QFN (RTJ), 4mm × 4mm, 0.4mm pitch, thermal pad connected to SUBGND.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (SDO) | MISO output | SPI serial data output; tri-state when CS high; compatible with standard microcontroller SPI peripherals. |
| 2 (SCLK) | Serial clock input | Host-provided SPI clock; rising edge latches SDI data; falling edge updates SDO; supports up to 25MHz. |
| 3 (SDI) | MOSI input | SPI serial data input; accepts register write commands and configuration bits per TI's byte-aligned protocol. |
| 4 (PINTDAV) | Interrupt/status output | Programmable active-low signal indicating pen-down event, data-ready, or both - reduces polling overhead. |
| 5 (RESET) | Asynchronous reset input | Active-low reset pulse ≥10µs (at 1.6V) restores all registers to default values - enables reliable recovery after brownout. |
| 13 (X+), 14 (Y+), 16 (X−), 17 (Y−) | Touch panel analog inputs | Direct connection to 4-wire resistive overlay; integrated drivers and <6Ω switch resistance ensure minimal coordinate error. |
| 9 (AUX), 11 (VREF), 12 (SNSVDD) | Auxiliary channel & reference | AUX supports external sensor input; VREF accepts 1.2–3.6V reference or ties to SNSVDD for ratiometric operation. |
Key Features
| Feature | Design Value |
|---|---|
| Ratiometric conversion | Eliminates dependency on absolute VREF stability by scaling measurements to supply voltage - improves coordinate repeatability across battery discharge. |
| Preprocessing engine | On-chip averaging, filtering, and auto-sampling control reduce host CPU load - frees processor cycles for UI rendering or real-time audio. |
| Internal touch detection | Hardware-based PENIRQ generation without host polling - enables immediate wake-from-sleep response to stylus contact. |
| Touch pressure measurement | Z-axis calculation using Z1/Z2 cross-panel readings - delivers quantitative force feedback for gesture differentiation (e.g., tap vs. press). |
| Low-voltage oscillator | 3.3–4.3MHz internal clock (SNSVDD-dependent) - removes need for external crystal or clock source, saving BOM cost and board area. |
Applications
| Portable Medical Devices | Industrial HMI Panels |
|---|---|
|
Use Scenario: Touch-enabled glucose meters and handheld ultrasound controls requiring reliable finger/stylus input under glove use and variable lighting. IC Role / Device Role / Timing Role: Primary touch coordinate acquisition IC; performs X/Y/Z measurement, internal temperature compensation, and PENIRQ assertion within 100µs of touch onset. Use Value: 1.2V operation extends battery life beyond 12 months; ±8kV HBM withstands clinical ESD events; 12-bit resolution ensures sub-millimeter positional accuracy on 3.5″ displays. |
Use Scenario: Ruggedized factory-floor HMIs exposed to vibration, dust, and wide ambient temperature swings (–25°C to +70°C). IC Role / Device Role / Timing Role: Dedicated touch controller interfacing to ARM-based display controller; handles touch debounce, pressure thresholding, and auto-power-down during idle periods. Use Value: –40°C to +85°C qualification ensures stable performance; integrated temperature sensor enables real-time calibration offset correction; QFN-20 footprint simplifies conformal coating. |
| Consumer Audio Players | Point-of-Sale Terminals |
|
Use Scenario: Compact MP3 players with OLED displays where PCB space and power budget are constrained to <10mm² and <1mW average. IC Role / Device Role / Timing Role: Low-power touch interface managing stylus input, swipe gestures, and volume control via AUX channel analog input. Use Value: 69µW at 8.2kSPS equivalent rate enables continuous touch monitoring; 4×4mm QFN allows placement behind display bezel; no external passive components required. |
Use Scenario: Retail kiosks and payment terminals requiring tamper-resistant, high-reliability touch response in high-traffic environments. IC Role / Device Role / Timing Role: Core touch acquisition unit driving 4-wire overlay; executes ratiometric conversion to reject LCD noise coupling; asserts DAV interrupt upon valid coordinate capture. Use Value: ±25kV air-gap ESD protection prevents field failures from customer static discharge; programmable sampling rate adapts to fast cashier swipes or slow customer navigation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar touch screen controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TI TSC2007IPWR | Same 20-pin QFN package; adds I²C interface alongside SPI; identical 12-bit SAR, 1.2–3.6V supply, and touch pressure capability. | Preferred where host MCU lacks SPI but offers I²C; supports dual-interface flexibility in shared-bus designs. | Select TSC2007IPWR only if I²C integration is required; TSC2006IRTJTG4 remains optimal for SPI-only, lowest-quiescent-current implementations. |
| Analog Devices AD7873ARUZ | 12-bit SAR, 2.7–3.6V supply only; no internal oscillator (requires external clock); ±4kV HBM ESD; 16-pin TSSOP package. | Suitable for fixed-voltage 3.3V systems with existing clock infrastructure; not viable for 1.2V battery operation or space-constrained layouts. | Choose AD7873ARUZ only in legacy 3.3V designs with TSSOP-compatible footprints; TSC2006IRTJTG4 provides broader voltage range and smaller size. |
Compared with TSC2007IPWR and AD7873ARUZ, the TSC2006IRTJTG4 uniquely combines nanopower operation down to 1.2V, integrated oscillator, and industry-leading ±25kV air-gap ESD - making it the sole choice for next-generation compact, battery-operated touch interfaces demanding robustness and efficiency.
Availability
TSC2006IRTJTG4 is available at Aetrix Electronics and suitable for portable medical devices, industrial HMI panels, consumer audio players, and point-of-sale terminals requiring stable component supply across extended production lifecycles.
Supply support for TSC2006IRTJTG4 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Texas Instruments is a global semiconductor leader specializing in analog, embedded processing, and connectivity technologies, with decades of expertise in precision data converters and human-interface solutions.
The TSC2006IRTJTG4 belongs to TI's touch screen controller product line, engineered specifically for ultra-low-power, small-footprint resistive touch applications in battery-constrained portable electronics - emphasizing integration, ESD resilience, and host-processor offload.
FAQ
What is the minimum operating voltage for the TSC2006IRTJTG4?
The TSC2006IRTJTG4 operates from 1.2V to 3.6V on both SNSVDD and I/OVDD rails. At 1.2V, it delivers 280µW at 50SSPS and maintains full 12-bit functionality, enabling direct connection to single-cell alkaline or lithium primary batteries without regulation - a critical advantage for long-life portable instrumentation where TSC2006IRTJTG4 replaces discrete ADC + GPIO solutions.
Does the TSC2006IRTJTG4 require an external reference voltage?
No, the TSC2006IRTJTG4 supports ratiometric operation using SNSVDD as the reference, eliminating the need for an external VREF. When an external reference is used (via VREF pin), it must be between 1.2V and SNSVDD. This flexibility allows TSC2006IRTJTG4 to maintain accurate coordinate measurement across battery discharge while reducing BOM count and layout complexity.
How does the TSC2006IRTJTG4 handle touch pressure (Z-axis) measurement?
The TSC2006IRTJTG4 calculates touch resistance using two methods: one requiring X-plate resistance and Z1/Z2 cross-panel readings, and another using both X- and Y-plate resistances plus Z1. The device performs these calculations internally, delivering calibrated Z-value data to the host - enabling TSC2006IRTJTG4 to distinguish light taps from firm presses in gesture-aware UIs without host-side computation.
What is the function of the PINTDAV pin on the TSC2006IRTJTG4?
PINTDAV is a programmable active-low interrupt/status output that can be configured to signal pen-down detection, data-available status, or both. This dual-mode capability allows the host processor to enter low-power sleep until TSC2006IRTJTG4 asserts PINTDAV, significantly reducing system-level power consumption in always-on touch interfaces such as kiosk displays and wearable controllers.
Is the TSC2006IRTJTG4 compatible with SPI Mode 3 (CPOL=1, CPHA=1)?
No, the TSC2006IRTJTG4 supports only SPI Mode 0 (CPOL=0, CPHA=0), where data are sampled on the rising edge of SCLK and changed on the falling edge. Attempting Mode 3 communication will result in corrupted register reads/writes. Host firmware must configure its SPI peripheral accordingly - a requirement explicitly documented in the TSC2006IRTJTG4 datasheet and verified in TI's reference designs.
TSC2006IRTJTG4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 20-WFQFN Exposed Pad
- Touchscreen:
- 4 Wire Resistive
- Resolution (Bits):
- 12 b
- Interface:
- SPI
- Voltage Reference:
- External
- Voltage - Supply:
- 1.2V ~ 3.6V
- Current - Supply:
- -
- Operating Temperature:
- -40°C ~ 85°C
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- 20-QFN (4x4)
TSC2006IRTJTG4 FAQ
1.How can I place an order for TSC2006IRTJTG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for TSC2006IRTJTG4 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for TSC2006IRTJTG4 reliable?
The price and inventory of TSC2006IRTJTG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TSC2006IRTJTG4 is usually 5 days.
3.What payment methods are accepted for TSC2006IRTJTG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TSC2006IRTJTG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TSC2006IRTJTG4?
TSC2006IRTJTG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TSC2006IRTJTG4 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for TSC2006IRTJTG4?
For technical support, including TSC2006IRTJTG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TSC2006IRTJTG4 requirements.
6.How does Aetrix verify that TSC2006IRTJTG4 is sourced from the original manufacturer or authorized distributors?
All TSC2006IRTJTG4 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that TSC2006IRTJTG4 meets industry standards.
7.What is the process for return or replacement of TSC2006IRTJTG4?
All TSC2006IRTJTG4 units undergo pre-shipment inspection (PSI). If there is an issue with TSC2006IRTJTG4, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The TSC2006IRTJTG4 part is unused and in its original packaging.
Return procedure for TSC2006IRTJTG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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