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Infineon Technologies CY8CMBR3106S-LQXI
- Part No.:
- CY8CMBR3106S-LQXI
- Manufacturer:
- Infineon Technologies
- Category:
- Sensor, Capacitive Touch
- Package:
- 24-UFQFN Exposed Pad
- Datasheet:
-
CY8CMBR3106S-LQXI.pdf
- Description:
- IC CAP SENSE 24QFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,030
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Product details
Overview
CY8CMBR3106S-LQXI from Infineon Technologies (formerly Cypress) is a register-configurable CapSense Express™ capacitive touch controller supporting up to 16 sensing inputs, 2 sliders, and proximity detection. It integrates SmartSense Auto-tuning, CSD PLUS sensing algorithm (SNR >100:1), and operates from 1.71 V to 5.5 V across –40 °C to +85 °C. Used in industrial HMI panels requiring liquid-tolerant, noise-immune touch interfaces with zero firmware development.
For engineers reviewing the CY8CMBR3106S-LQXI datasheet, CY8CMBR3106S-LQXI pinout, CY8CMBR3106S-LQXI application, or CY8CMBR3106S-LQXI equivalent, key selection criteria include I²C slave interface (400 kHz), 22 µA/sensor average current at 120-ms refresh, flanking sensor suppression (FSS), analog voltage output capability, and support for up to 15 mm glass overlay thickness.
Technical Context
The CY8CMBR3106S-LQXI implements a dedicated analog front-end with Capacitive Sigma Delta PLUS (CSD PLUS) modulation, delivering ≥100:1 signal-to-noise ratio under conducted/radiated EMI. Its SmartSense Auto-tuning continuously adjusts baseline and thresholds using real-time environmental compensation-no manual tuning required during production ramp-up.
It features an I²C slave interface with wake-on-hardware address match, deep sleep mode with interrupt wake-up, and eight high-sink GPOs for LED drive. System diagnostics monitor CMOD capacitor value, sensor parasitic capacitance (5–45 pF), and sensor shorts-enabling robust field-deployable designs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Sensing Inputs | 16 capacitive inputs with support for 2 independent sliders and proximity sensing |
| SNR Performance | >100:1 - ensures reliable touch detection in noisy industrial environments |
| Power Supply Range | 1.71 V to 5.5 V - enables direct integration with 1.8 V, 3.3 V, and 5 V host systems |
| Avg. Current per Sensor | 22 µA at 120-ms refresh - supports battery-powered UIs with multi-year operation |
| Overlay Thickness Support | Up to 15 mm glass / 5 mm plastic - allows sealed, vandal-resistant front-panel designs |
| I²C Speed | Up to 400 kHz - compatible with standard fast-mode I²C hosts without timing constraints |
| Operating Temp | –40 °C to +85 °C - qualified for industrial control and outdoor kiosk deployments |
Pinout & Package
Package: 16-pin QFN (3 × 3 × 0.6 mm), wettable flank, RoHS-compliant, thermal pad exposed on bottom.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Power supply input | Primary power rail (1.71–5.5 V); decoupling capacitor required near pin |
| GND | Ground reference | Analog/digital common return; connects to thermal pad for thermal dissipation |
| SCL | I²C clock input | Open-drain, requires external pull-up; supports up to 400 kHz clock rate |
| SDA | I²C data bidirectional | Open-drain, shares bus with other I²C slaves; supports wake-on-address match |
| INT | Interrupt output | Active-low open-drain attention line signaling sensor state change to host MCU |
| RESET | Hardware reset input | Active-low asynchronous reset; internal pull-up; debounced externally recommended |
| GPO0–GPO7 | General-purpose outputs | Eight high-sink (20 mA max) outputs for LED drive or buzzer control |
| CP0–CP15 | Capacitive sensor inputs | 16 dedicated analog inputs; each supports self- or mutual-capacitance measurement |
Key Features
| Feature | Design Value |
|---|---|
| SmartSense Auto-tuning | Real-time baseline and threshold adaptation eliminates manual tuning across temperature/humidity/aging |
| Liquid tolerance | Detects intentional touch while rejecting false triggers from mist, droplets, or streaming water |
| Flanking Sensor Suppression (FSS) | Prevents adjacent button crosstalk in high-density layouts with spacing <3 mm |
| System diagnostics | On-chip detection of CMOD fault, CP out-of-range (5–45 pF), and sensor short conditions |
| LED brightness control | Configurable ON-time per GPO enables uniform visual feedback across varying LED forward voltages |
Applications
| Industrial Control Panel | Medical Device Interface |
|---|---|
Use Scenario: Touch-enabled operator panel in factory HMIs with sealed front bezel and washdown requirements. IC Role / Device Role / Timing Role: Primary capacitive touch controller managing 12 buttons and 2 linear sliders via I²C; provides INT-driven status updates to ARM Cortex-M host. Use Value: Liquid tolerance prevents false actuation during cleaning; SmartSense maintains calibration across 40 °C ambient swings. | Use Scenario: Patient-facing diagnostic equipment requiring intuitive, glove-compatible touch controls. IC Role / Device Role / Timing Role: Standalone touch interface processor handling proximity wake-up and tactile LED feedback via GPOs. Use Value: 15 mm glass overlay support enables durable, scratch-resistant front panel; SNR >100:1 rejects ECG/EMG interference. |
| Smart Appliance UI | Public Kiosk Terminal |
Use Scenario: Oven/microwave control panel with slider-based temperature adjustment and button-based function selection. IC Role / Device Role / Timing Role: Dedicated CapSense controller offloading touch processing from main MCU; communicates via I²C at 100 kHz. Use Value: FSS enables compact 8-mm button pitch; low 22 µA/sensor current extends battery life in cordless models. | Use Scenario: Outdoor ticketing kiosk exposed to rain, dust, and wide temperature variation. IC Role / Device Role / Timing Role: Robust touch interface managing 16 buttons and proximity wake-up; uses analog voltage output for ambient light compensation. Use Value: –40 °C to +85 °C rating ensures reliability; system diagnostics flag sensor degradation before field failure. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar capacitive touch controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AT42QT2120-MAHR | 12-button QTouch IC; no slider/proximity support; fixed threshold; no SmartSense auto-tuning | Limited to basic button-only UIs; lacks liquid tolerance and environmental adaptation | Select when cost sensitivity outweighs need for adaptive tuning or multi-function sensing |
| TTP223B-BS6 | Single-channel touch detector; no I²C interface; no diagnostics; 3.3 V only; no slider/proximity | Only suitable for discrete on/off toggle functions-not for multi-input or slider-based interfaces | Choose only for ultra-low-cost single-button replacement; not scalable to 16-input systems |
Compared with AT42QT2120-MAHR and TTP223B-BS6, the CY8CMBR3106S-LQXI delivers full programmability, adaptive noise immunity, and integrated diagnostics-making it uniquely suited for complex, field-deployed touch interfaces where reliability and zero-touch-tuning are mandatory.
Availability
CY8CMBR3106S-LQXI is available at Aetrix Electronics and suitable for industrial control panels, medical device interfaces, smart appliance UIs, and public kiosk terminals requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for CY8CMBR3106S-LQXI 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
Infineon Technologies is a global semiconductor leader headquartered in Munich, Germany, specializing in power management, sensing, and connectivity solutions for industrial, automotive, and IoT applications.
The CY8CMBR3xxx product line was originally developed by Cypress Semiconductor and continues under Infineon's portfolio to deliver turnkey, firmware-free capacitive touch solutions targeting rapid HMI development in harsh or regulated environments.
FAQ
What is the maximum overlay thickness supported by CY8CMBR3106S-LQXI?
The CY8CMBR3106S-LQXI supports up to 15 mm of glass or 5 mm of plastic overlay thickness. This is achieved through high-sensitivity CSD PLUS sensing (0.1 pF resolution) and dynamic gain adjustment. Performance validation requires matching sensor geometry and parasitic capacitance (5–45 pF) per the Design Toolbox guidelines.
Does CY8CMBR3106S-LQXI require firmware development?
No. The CY8CMBR3106S-LQXI is register-configurable via I²C and requires no firmware development. All touch behavior-including thresholds, sensitivity, LED timing, and diagnostics-is set using the EZ-Click Customizer GUI tool or direct register writes. SmartSense Auto-tuning eliminates manual calibration during production.
How does the device handle water or condensation on the touch surface?
The CY8CMBR3106S-LQXI implements hardware-accelerated liquid tolerance by distinguishing between slow-rising water films and fast-rising finger touches using delta-C analysis and adaptive baseline tracking. It suppresses false triggers from mist, droplets, or streaming water while maintaining responsiveness to intentional touch-even with wet fingers.
Can CY8CMBR3106S-LQXI drive LEDs directly without external transistors?
Yes. The device provides eight high-sink GPOs rated for 20 mA each at VDD ≥ 3.0 V, enabling direct LED drive with appropriate current-limiting resistors. LED brightness is controlled via configurable ON-time per GPO, allowing consistent visual feedback across varying forward voltages and colors without external PWM circuitry.
CY8CMBR3106S-LQXI Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Package/Case:
- 24-UFQFN Exposed Pad
- Series:
- CAPSENSE™ Express™ SmartSense™
- Packaging:
- Tray
- Product Status:
- Active
- Programmable:
- Not Verified
- Type:
- Buttons, Slider
- Proximity Detection:
- Yes
- Number of Inputs:
- Up to 11
- LED Driver Channels:
- -
- Interface:
- I2C
- Resolution:
- -
- Voltage - Supply:
- 1.8V ~ 5.5V
- Current - Supply:
- 140mA
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 24-QFN (4x4)
CY8CMBR3106S-LQXI FAQ
1.How can I place an order for CY8CMBR3106S-LQXI through Aetrix?
Please submit a Request for Quotation (RFQ) for CY8CMBR3106S-LQXI 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 CY8CMBR3106S-LQXI reliable?
The price and inventory of CY8CMBR3106S-LQXI are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CY8CMBR3106S-LQXI is usually 5 days.
3.What payment methods are accepted for CY8CMBR3106S-LQXI?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CY8CMBR3106S-LQXI transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CY8CMBR3106S-LQXI?
CY8CMBR3106S-LQXI orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CY8CMBR3106S-LQXI 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 CY8CMBR3106S-LQXI?
For technical support, including CY8CMBR3106S-LQXI datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CY8CMBR3106S-LQXI requirements.
6.How does Aetrix verify that CY8CMBR3106S-LQXI is sourced from the original manufacturer or authorized distributors?
All CY8CMBR3106S-LQXI 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 CY8CMBR3106S-LQXI meets industry standards.
7.What is the process for return or replacement of CY8CMBR3106S-LQXI?
All CY8CMBR3106S-LQXI units undergo pre-shipment inspection (PSI). If there is an issue with CY8CMBR3106S-LQXI, 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 CY8CMBR3106S-LQXI part is unused and in its original packaging.
Return procedure for CY8CMBR3106S-LQXI:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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