ILI2511 - 65-Channel Capacitive Touch Controller | ILITEK
N.º de pieza: ILI2511 ✓ Activo| Cant. | Precio unitario | Total |
|---|---|---|
| 1 | $4.5 | $4,50 |
| 10 | $4.05 | $40,50 |
| 100 | $3.6 | $360,00 |
| 500 | $3.2 | $1.600,00 |
| 1.000 | $2.85 | $2.850,00 |
| 3.000 | $2.55 | $7.650,00 |
ILI2511 Descripción general
What is a capacitive touch sensor controller? A capacitive touch controller is a mixed-signal IC that drives an array of electrodes (TX/RX lines) and measures the tiny changes in self- or mutual-capacitance caused by a finger or stylus near the panel. These measurements are digitized and processed by an embedded MCU to produce touch coordinates and gestures. In the broader taxonomy, the ILI2511 sits as: capacitive touch controller -> projected capacitive touch (PCAP) controller -> touch sensor IC -> mixed-signal interface IC -> semiconductor. PCAP controllers replaced legacy resistive touch in nearly all modern point-of-sale and industrial-human-machine-interface (HMI) panels.
Key features include 65 sensing channels that map to panels up to ~15.6" in diagonal, an embedded high-voltage charge pump that drives large-panel stacks without external DC-DC circuitry, on-chip firmware with touch and gesture reporting, and a hardware-qualified HID descriptor compatible with mainstream operating systems. Industrial-grade ESD protection and wide operating-temperature support make the part well suited to POS terminals, ATMs, medical carts, and factory HMI displays.
The ILI2511 integrates the analog front-end and digital MCU on a single die, which removes the need for an external host MCU to run the touch pipeline. The on-chip charge pump and HV regulator let the part bias the TX electrodes at the higher voltage needed for thick cover-glass or glove-touch operation, while the 32-bit core handles noise filtering, baseline tracking, and multi-touch reporting internally.
Typical applications include POS checkout terminals, ATM touchscreens, industrial control panels, medical equipment HMIs, self-service kiosks, and information displays. The USB and I2C interfaces allow drop-in integration with Windows PCs, embedded Linux boards, and standalone MCU hosts.
When designing with the ILI2511, follow the ILITEK reference layout for the QFN-88 EP land pattern, keep the high-voltage charge-pump traces short and surrounded by ground, and use the recommended ITO/stackup from the panel vendor to achieve the rated touch sensitivity. Add ESD protection on the USB D+/D- lines if the panel is exposed to user handling.
This page synthesizes verified ILITEK datasheet parameters, distributor pricing, and a curated list of drop-in alternative touch controllers you can evaluate for sourcing risk or second-source qualification - information not aggregated on any single manufacturer or distributor page.
Alternativas directas para ILI2511 — mismo encapsulado, compatible pin a pin. Se excluyen las piezas de otro encapsulado que requieren retrabajo de la PCB.
Herramienta de comparación rápida — seleccione piezas alternativas para compararlas lado a lado:
ILI2139A
✅ Sustitución directa ⚠️ Especificaciones sin verificar📋 Alternativa de referencia (no en el catálogo)
ILI2510
✅ Sustitución directa ⚠️ Especificaciones sin verificar📋 Alternativa de referencia (no en el catálogo)
ILI2511 Valores máximos y características eléctricas
| Product Type | Single-chip capacitive touch sensor controller (PCAP) |
| Manufacturer | ILITEK (ILITEK / ILI Technology Corp.) |
| Total Sensing Channels | 65 (TX drive + RX sense) |
| Embedded MCU | 32-bit |
| Front-End | High-speed Capacitance-to-Digital Converter (CDC) |
| Host Interfaces | USB, I2C, UART |
| High-Voltage Drive | On-chip charge pump controller + high-voltage regulator |
| OS Compliance | Windows 8.1, Windows 10 (HID-class) |
| Target Applications | POS, ATM, industrial capacitive touch panel |
| Encapsulado | QFN-88-EP (10x10 mm) |
| Tipo de montaje | Surface Mount |
Guía de configuración de pines de ILI2511 qfn-88-ep (10x10 mm)
Configuración de pines para ILI2511 (encapsulado qfn-88-ep (10x10 mm)). La numeración de pines, las funciones y los diagramas de conexión se definen en la hoja de datos del fabricante. Consúltela para conocer el footprint exacto y las directrices de soldadura.
No hay datos detallados de patillaje disponibles para ILI2511.
Consulte la hoja de datos para ver la configuración completa de patillas.
Aplicaciones típicas
ILI2511 es adecuado para 6 aplicacións: POS Checkout Terminals, ATM and Self-Service Kiosks, Industrial HMI Panels, Medical Equipment Touch Displays, Interactive Information Displays, Vending and Ticketing Machines.
POS Checkout Terminals
The ILI2511's 65 sensing channels, integrated high-voltage charge pump, and Windows 8.1/10 HID-compliant USB interface make it a strong fit for capacitive POS checkout terminals up to ~15.6 inches. The on-chip 32-bit MCU streams multi-touch coordinates through standard HID, so the POS host CPU runs only the POS application - no custom driver needed. Glove- and water-rejection firmware profiles (panel-vendor validated) let cashiers operate with wet or gloved hands without losing accuracy. Place the controller on a 4-layer board with the EP pad stitched to ground and keep the HV charge-pump traces short per ILITEK's reference layout to meet radiated-emissions targets in retail EMC environments.
Recomendado
ATM and Self-Service Kiosks
ATM and self-service kiosks demand vandal-resistant cover glass and reliable touch through gloves and rain - exactly where the ILI2511's integrated high-voltage charge pump earns its keep. The HV pump boosts the TX drive level so thick cover glass still produces measurable CDC delta, while the embedded 32-bit core handles baseline tracking and noise rejection in the field. HID-class USB output lets the kiosk computer treat the panel as a standard eGalax/HID digitizer, simplifying OS image builds. The QFN-88-EP (10x10 mm) keeps the controller small enough to sit behind a slim bezel, and the on-chip regulator removes one external DC-DC, reducing BOM and MTBF risk.
Recomendado
Industrial HMI Panels
Industrial HMI panels need consistent touch through gloves, oil, and water, plus immunity to the switching-noise environment near motor drives. The ILI2511's 65 channels, embedded charge pump, and CDC filtering support projected-capacitive sensing through 6-10 mm cover glass used in factory automation enclosures. The integrated 32-bit MCU handles noise filtering locally so the HMI's main processor is not interrupted per touch, keeping deterministic scan budgets for control loops. ILITEK's Windows 8.1/10 HID-class USB output also lets the same firmware image run on x86 HMI SBCs and ARM panels without driver porting. Validate panel-stackup-specific tuning per ILITEK's reference flow before going to production.
Recomendado
Medical Equipment Touch Displays
Medical carts, infusion pumps, and bedside terminals benefit from the ILI2511's glove/wet-finger firmware profiles and on-chip touch pipeline. The integrated CDC + 32-bit MCU processes touches locally, so the medical SBC can dedicate cycles to safety-critical tasks while the touch controller streams multi-touch via USB-HID or I2C. The on-chip HV regulator and charge pump reduce external components - critical for medical BOM simplification and faster IEC 60601-1 EMI/ESD reviews. Engineering teams should still validate the panel-stackup-specific tuning and ESD paths with the ILITEK reference documentation, but the silicon integration removes a class of analog design work from the medical project plan.
Recomendado
Interactive Information Displays
Interactive information displays in retail, transit, and museum settings typically run a 10-21 inch diagonal PCAP panel driven by an x86 media player. The ILI2511's 65 channels fit common 15.6" layouts, while its HID-class USB output is recognized natively by Windows, Linux (via standard hid-multitouch driver), and most embedded media-player OS images. The on-chip HV charge pump lets designers use thicker anti-glare cover glass, improving outdoor readability. Because the ILI2511 carries touch processing on-board, the media player is free to focus on graphics and content security rather than real-time touch filtering.
Recomendado
Vending and Ticketing Machines
Vending and ticketing machines combine outdoor environments, public-user touch, and an embedded SBC host - a perfect match for the ILI2511's HID-class USB output and rugged PCAP pipeline. The on-chip 32-bit MCU handles wet and glove touches that occur in transit-station vending, while the integrated HV regulator keeps power-rail design simple. The QFN-88-EP 10x10 mm package fits the slim bezel behind the touch panel, and the standard HID interface means the same vending controller firmware works across panel sizes up to ~15.6 inch. Designers should pair the ILI2511 with ILITEK's panel-tuning guide to lock down the cover-glass / sensor parameters early in the project.
Recomendado
Resumen de productos recomendados
Datos de referencia de ingeniería para ILI2511 — comparación, orientación de diseño e información de cumplimiento.
Guía de selección
Comparación con alternativas
| Parámetro | Este producto | ILI2139A | ILI2510 | GT9271 |
|---|---|---|---|---|
| Package | QFN-88-EP (10x10 mm) | QFN-88-EP (10x10 mm) - same family | QFN-88-EP (10x10 mm) - same family | QFN-68 - different package (not pin-compatible) |
| Brand | ILITEK | ILITEK (same brand) | ILITEK (same brand) | Goodix (cross-brand, different package) |
| Host Interfaces | USB, I2C, UART | USB, I2C | USB, I2C, UART | I2C, USB (no native UART HID) |
| Embedded MCU | 32-bit | 32-bit | 32-bit | 32-bit |
| High-Voltage Charge Pump | On-chip | On-chip | On-chip | On-chip |
| OS Compliance | Windows 8.1 / Windows 10 HID | Windows 8.1 / Windows 10 HID | Windows 8.1 / Windows 10 HID | Windows / Android HID-class |
| Target Panel Size | Up to ~15.6-inch diagonal | Up to ~10.1-inch diagonal | Up to ~10.1-inch diagonal | Up to ~8-inch diagonal |
Diferenciadores clave
- On-chip high-voltage charge pump for thick cover glass (frente a ILI2510)
- 65-channel count vs typical 32-channel PCAP parts (frente a GT9271)
- HID-class USB output compliant with Windows 8.1/10 (frente a Proprietary PCAP controllers)
Notas de diseño
Use a 4-layer stack-up with a continuous ground plane under the QFN-88-EP. Stitch the exposed pad (EP) with a 5x5 via array (0.3 mm via, 0.5 mm pitch) tied to the ground plane to meet thermal and EMI targets. Keep the high-voltage charge-pump capacitor loop (CX_PUMP and CPGND return) within 5 mm of the controller pins and route the return on the opposite layer to reduce radiated emissions in retail EMC scans.
Route the USB D+/D- pair as a 90-ohm differential with no splits, and place the ESD protection array within 5 mm of the connector. For I2C operation, locate the I2C pull-ups near the ILI2511 and follow ILITEK's reference schematic for the WAKE/INT/RESET pin net. Keep the TX/RX sensor traces short and shielded by ground; > 50 mm sensor runs require a re-check of the CDC noise floor during panel tuning.
Capacitive touch controllers are mixed-signal parts; the CDC front-end and the digital MCU share one die. Isolate the analog AVDD pin with a ferrite bead and a 10 uF + 0.1 uF decoupling pair, and keep digital return currents out of the AVDD ground reference. If the panel stackup is single-sided flex, follow the ILITEK reference flex-routing rules - improper return paths degrade CDC SNR and cause ghost touches near display edges.
Do not skip the panel-specific tuning flow - touch controllers require per-stackup calibration of the CDC baseline and integration window. Replacing an ILI2511 with a different PCAP part (e.g. GT9271) on the same PCB will produce ghost touches until the firmware and HID descriptor are regenerated. Also confirm the host system's hid-multitouch driver version; older Linux kernels need a manual map for some ILITEK descriptors, which trips up Linux kiosk images if not validated early.
Información de cumplimiento
JLCPCB lists ILI2511 as ROHS-compliant SMT. REACH, halogen-free, and conflict-minerals status were not found in the verified data; AEC-Q100 is not applicable to a touch controller IC.
