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Texas Instruments TSC2200IPWRG4
- Part No.:
- TSC2200IPWRG4
- Manufacturer:
- Texas Instruments
- Category:
- Touch Screen Controllers
- Package:
- 28-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
TSC2200IPWRG4.pdf
- Description:
- IC SCREEN CNTRL 12BIT 28TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,397
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Product details
Overview
TSC2200IPWRG4 from Texas Instruments is a complete PDA analog interface IC integrating 4-wire resistive touch screen controller, 4×4 keypad scanner, dual battery monitor (0.5V–6V), on-chip temperature sensor (±2°C accuracy, 0.3°C resolution), and 8-bit current-output DAC for LCD contrast control. It operates from a single 2.7V–3.6V supply, supports programmable 8/10/12-bit A/D resolution, and interfaces via SPI to host microprocessors in handheld human-interface systems.
For engineers reviewing the TSC2200IPWRG4 datasheet, TSC2200IPWRG4 pinout, TSC2200IPWRG4 application, or TSC2200IPWRG4 equivalent, key selection considerations include ratiometric touch conversion capability, integrated PENIRQ/KBIRQ interrupt signaling, internal 2.5V/1.25V reference options, touch-pressure measurement support, and TSSOP-28 package compatibility with space-constrained portable designs.
Technical Context
The TSC2200IPWRG4 implements a SAR-based A/D converter with capacitive redistribution architecture and integrated sample-and-hold, enabling simultaneous X/Y coordinate acquisition and Z-axis pressure calculation using two distinct methods. Its register-based SPI interface uses 16-bit command words with page addressing (Page 0 for data registers, Page 1 for control) and supports three A/D operation modes: auto-touch detection, PENIRQ-triggered, or host-controlled conversion sequencing.
Internal drivers provide low on-resistance switching (<6.5Ω at +25°C) for 4-wire touch panel excitation, while programmable panel voltage stabilization delay compensates for mechanical bounce and external filter capacitance. The device integrates dual independent battery monitors with ±3% accuracy and an on-chip temperature diode with 0.3°C resolution referenced to TEMP1/TEMP2 pins.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| A/D Resolution | Programmable 8-, 10-, or 12-bit; enables trade-off between speed (up to 125kHz sampling) and precision for touch, battery, or auxiliary measurements. |
| Supply Voltage | 2.7V to 3.6V single supply; supports direct integration into 3.3V portable systems without level-shifting or LDO overhead. |
| Battery Input Range | 0.5V to 6.0V per channel (VBAT1/VBAT2); allows monitoring of main and backup batteries while operating at 2.7V VDD. |
| Temperature Accuracy | ±2°C over –40°C to +85°C; enables reliable thermal management in PDAs and cellular handsets without external calibration. |
| DAC Output | 8-bit current-output (650µA max); sets LCD contrast via external resistor (ARNG-to-GND), eliminating need for external op-amp buffer. |
| Reference Options | Internal 2.5V or 1.25V (20ppm/°C drift) or external reference input (1.0V to VDD); supports ratiometric touch conversion for immunity to supply variation. |
| Operating Temperature | –40°C to +85°C; qualified for industrial-grade portable electronics including MP3 players and cellular phones. |
| Quiescent Current | 1.25mA typical (active), 3µA (power-down); extends battery life in always-on touch-detection standby mode. |
Pinout & Package
TSC2200IPWRG4 is packaged in a 28-pin TSSOP (PW) with 0.65mm pitch, optimized for compact portable PCB layouts. Pin functions are validated per TI SBAS191F Rev. April 2004 datasheet.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| VDD (Pin 1) | Power supply input | Single 2.7V–3.6V rail powers all analog and digital blocks; decoupling required near pin for noise-sensitive A/D operation. |
| X+, X–, Y+, Y– (Pins 2–5) | Touch screen interface terminals | Direct connection to 4-wire resistive overlay; internal drivers enable bidirectional excitation and sensing for X/Y/Z coordinate acquisition. |
| GND (Pin 6) | Analog/digital ground reference | Common return for all analog measurements and digital I/O; must be low-impedance to minimize offset error in ratiometric conversions. |
| VBAT1/VBAT2 (Pins 7–8) | Battery monitor inputs | High-impedance inputs (±1µA leakage) accept up to 6V; enable simultaneous monitoring of primary and secondary battery cells. |
| VREF (Pin 9) | Reference voltage I/O | Configurable as internal 2.5V/1.25V output or external reference input; critical for accuracy in battery and temperature measurements. |
| KBIRQ/PENIRQ (Pins 10, 24) | Interrupt outputs | Active-low open-drain signals alert host MCU to keypress or screen touch; eliminate polling overhead and reduce system power. |
| R1–R4, C1–C4 (Pins 11–18) | Keypad row/column scan I/O | Drive 4×4 matrix keypad with internal state machine; no external pull-ups or drivers required for basic scanning. |
| SCLK/SS/MOSI/MISO (Pins 19–23) | SPI serial interface | Standard Motorola SPI (CPOL=0, CPHA=1); supports full-duplex register read/write at up to 8MHz clock rate with 30ns timing margins. |
| AUX1/AUX2 (Pins 27–28) | Auxiliary analog inputs | Single-ended inputs (0–VREF range) with 25pF capacitance and ±1µA leakage; suitable for sensor or voltage-monitoring extensions. |
Key Features
| Feature | Design Value |
|---|---|
| Ratiometric touch conversion | Eliminates sensitivity to VDD variation during X/Y coordinate measurement by referencing A/D conversion to touch panel drive voltage rather than internal VREF. |
| Integrated touch-pressure measurement | Supports two calculation methods (Z1/Z2 or X/Y-based) using 12-bit A/D results to derive contact resistance-enabling pressure-sensitive UI gestures without external circuitry. |
| Programmable panel stabilization delay | Configurable delay between driver activation and A/D sampling compensates for mechanical bounce and external RC filtering, ensuring stable digitization after touch. |
| On-chip temperature sensor | Diode-based measurement with 0.3°C resolution and ±2°C accuracy across –40°C to +85°C enables thermal compensation of touch performance or system-level thermal management. |
| Direct battery voltage monitoring | Dual 0.5V–6V inputs with ±3% accuracy allow real-time tracking of battery health and charge state in multi-cell portable devices without external scaling resistors. |
| Full power-down control | 3µA shutdown current with retained register state enables rapid wake-up from touch-detection standby, extending battery life in always-on portable applications. |
Applications
| Personal Digital Assistant (PDA) | Cellular Phone |
|---|---|
Use Scenario: Resistive touch screen navigation and stylus-based input on monochrome or color LCD displays. IC Role / Device Role / Timing Role: Primary analog interface managing X/Y coordinate acquisition, pressure sensing, and LCD contrast via DAC output. Use Value: Integrates touch, keypad, battery, and temperature functions into one IC, reducing BOM count and PCB area versus discrete solutions. |
Use Scenario: Touchscreen UI interaction and physical keypad scanning in feature phones with dual-battery configurations. IC Role / Device Role / Timing Role: Dual-role interface handling both touch-panel interrupts (PENIRQ) and keypress events (KBIRQ) with synchronized SPI register access. Use Value: Enables simultaneous battery monitoring (VBAT1/VBAT2) and temperature tracking (TEMP1/TEMP2) for accurate power management and thermal throttling. |
| MP3 Player | Handheld Industrial Terminal |
Use Scenario: Compact audio player with touch-sensitive controls and battery-life optimization. IC Role / Device Role / Timing Role: Low-power analog front-end providing touch detection, battery voltage feedback, and contrast control for OLED/LCD display. Use Value: 3µA power-down mode and programmable sampling rates extend playback time; ratiometric conversion ensures consistent touch response across battery discharge curve. |
Use Scenario: Ruggedized field terminal requiring reliable human interface under variable temperature and power conditions. IC Role / Device Role / Timing Role: Robust analog interface supporting wide-input battery monitoring (0.5V–6V), industrial-grade temp range (–40°C to +85°C), and ESD-hardened I/O. Use Value: ±2°C temperature accuracy and ±3% battery measurement enable precise environmental compensation and predictive battery replacement alerts. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar analog interface applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TI TSC2003IPW | 3-wire touch interface only; no keypad scanner or battery monitor; 12-bit A/D, 2.7V–3.6V supply. | Limited to basic touch-only systems; lacks integrated keyboard, battery, and temperature functions of TSC2200IPWRG4. | Select when design requires minimal footprint and touch-only functionality without auxiliary analog channels. |
| ADI AD7873ARUZ | 4-wire touch controller only; no keypad, battery, or temperature monitoring; 12-bit A/D, 2.7V–3.6V supply; SPI-compatible. | Requires external components for keypad scanning and battery monitoring; higher system integration effort. | Choose when existing design already implements separate keypad/battery circuits and only touch interface upgrade is needed. |
Compared with TSC2200IPWRG4, the TSC2003IPW reduces integration by omitting keypad and battery functions, while the AD7873ARUZ provides touch-only capability with identical resolution but no on-chip peripherals-making TSC2200IPWRG4 uniquely suited for fully integrated PDA-class analog front-ends.
Availability
TSC2200IPWRG4 is available at Aetrix Electronics and suitable for personal digital assistants, cellular phones, and MP3 players requiring stable component supply, long-term lifecycle support, and industrial-temperature-grade performance.
Supply support for TSC2200IPWRG4 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 over 50 years of innovation in precision data converters and human-interface solutions.
The TSC2200IPWRG4 belongs to TI's PDA analog interface product line, designed specifically to consolidate touch, keypad, battery, temperature, and display control functions into a single IC for portable consumer electronics.
FAQ
What is the primary function of the TSC2200IPWRG4 in a portable electronic system?
The TSC2200IPWRG4 serves as a complete analog interface IC for handheld devices, integrating 4-wire resistive touch screen control, 4×4 keypad scanning, dual battery voltage monitoring (0.5V–6V), on-chip temperature sensing, and an 8-bit current-output DAC for LCD contrast. It replaces multiple discrete components in PDAs, cellular phones, and MP3 players, reducing system complexity and PCB area while maintaining high accuracy across its operating range.
Does the TSC2200IPWRG4 support ratiometric A/D conversion for touch screen measurements?
Yes, the TSC2200IPWRG4 supports ratiometric conversion for X/Y coordinate acquisition by using the touch panel drive voltage-not the internal reference-as the A/D conversion reference. This eliminates errors caused by VDD variation and ensures consistent touch position accuracy across the full battery discharge curve, a critical requirement for portable devices.
How does the TSC2200IPWRG4 handle touch-pressure measurement?
The TSC2200IPWRG4 enables touch-pressure (Z-axis) measurement using two supported calculation methods: one based on Z1/Z2 cross-panel readings and another using X/Y position data with known plate resistances. Both methods operate on 12-bit A/D results and require no external components, allowing pressure-sensitive UI implementation directly within the IC's register-controlled framework.
What are the key timing requirements for the SPI interface of the TSC2200IPWRG4?
The TSC2200IPWRG4 SPI interface requires CPOL = 0 and CPHA = 1 (data sampled on second clock edge), with minimum SCLK period of 30ns, data setup/hold times of 10ns, and slave access time of 15ns. SS must go low before SCLK starts, and MISO enters high-impedance state when SS is high-ensuring compatibility with standard microcontroller SPI peripherals without additional glue logic.
Can the TSC2200IPWRG4 operate with an external voltage reference?
Yes, the TSC2200IPWRG4 accepts an external reference voltage applied to the VREF pin over the range 1.0V to VDD. When enabled, the internal 2.5V/1.25V reference is disabled, allowing system-level reference sharing or higher-precision external references. This flexibility supports both ratiometric touch operation (using panel drive voltage) and absolute-measurement modes (using external VREF) for battery or auxiliary inputs.
TSC2200IPWRG4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 28-TSSOP (0.173", 4.40mm Width)
- Touchscreen:
- 4 Wire Resistive
- Resolution (Bits):
- 12 b
- Interface:
- SPI
- Voltage Reference:
- External, Internal
- Voltage - Supply:
- 2.7V ~ 3.6V
- Current - Supply:
- 1.25 mA
- Operating Temperature:
- -40°C ~ 85°C
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- 28-TSSOP
TSC2200IPWRG4 FAQ
1.How can I place an order for TSC2200IPWRG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for TSC2200IPWRG4 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 TSC2200IPWRG4 reliable?
The price and inventory of TSC2200IPWRG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TSC2200IPWRG4 is usually 5 days.
3.What payment methods are accepted for TSC2200IPWRG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TSC2200IPWRG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TSC2200IPWRG4?
TSC2200IPWRG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TSC2200IPWRG4 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 TSC2200IPWRG4?
For technical support, including TSC2200IPWRG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TSC2200IPWRG4 requirements.
6.How does Aetrix verify that TSC2200IPWRG4 is sourced from the original manufacturer or authorized distributors?
All TSC2200IPWRG4 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 TSC2200IPWRG4 meets industry standards.
7.What is the process for return or replacement of TSC2200IPWRG4?
All TSC2200IPWRG4 units undergo pre-shipment inspection (PSI). If there is an issue with TSC2200IPWRG4, 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 TSC2200IPWRG4 part is unused and in its original packaging.
Return procedure for TSC2200IPWRG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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