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Infineon Technologies CG8179AA
- Part No.:
- CG8179AA
- Manufacturer:
- Infineon Technologies
- Category:
- Sensor, Capacitive Touch
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
CG8179AA.pdf
- Description:
- IC CAPSENSE MBR3 I2C/GPO 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,542
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Product details
Overview
CG8179AA from Cypress Semiconductor is an automotive-qualified CapSense® capacitive touch controller IC with 10 GPIOs, 10 CapSense I/O channels, and integrated proximity sensing. It operates from 1.71 V to 5.50 V across –40 °C to +85 °C and supports I²C communication with SmartSense™ auto-tuning enabled.
For engineers reviewing the CG8179AA datasheet, CG8179AA pinout, CG8179AA application, or CG8179AA equivalent, this device is selected for embedded touch interfaces requiring robust noise immunity, low-voltage operation, and automotive-grade reliability in space-constrained SOIC-16 layouts.
Technical Context
The CG8179AA integrates a dedicated CapSense sensing engine with hardware-based SmartSense™ tuning, eliminating manual calibration. It delivers true proximity detection via shielded electrode support and adaptive baseline tracking, enabling reliable operation under varying environmental conditions.
All 10 GPIOs are configurable as CapSense inputs or general-purpose digital I/O, with five of them supporting GPO functionality. The I²C interface operates up to 400 kHz with programmable address and interrupt-driven reporting, minimizing host CPU overhead.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Operating Voltage | 1.71 V to 5.50 V - supports single-supply operation across battery-powered and 3.3/5 V system rails |
| Temperature Range | –40 °C to +85 °C - qualified for automotive cabin and industrial control environments |
| CapSense I/O Count | 10 channels - enables full-button/slider implementation without external multiplexing |
| GPIO Count | 10 pins - all dual-function for CapSense or digital I/O, reducing BOM count |
| GPO Count | 5 outputs - drive LEDs, buzzers, or status indicators directly without external drivers |
| Communication Interface | I²C - standard two-wire interface with interrupt pin for event-driven host response |
| SmartSense Enabled | Yes - automatic sensor calibration and drift compensation without firmware intervention |
Pinout & Package
CG8179AA is housed in a 16-pin SOIC package (3.90 mm × 1.47 mm × 1.50 mm), RoHS-compliant, with Ni/Pd/Au lead finish and MSL Level 3 moisture sensitivity.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Power supply input | Primary 1.71–5.50 V supply rail for core and analog blocks |
| GND | Ground reference | Analog and digital ground common return path |
| SCL | I²C clock input | Master-generated clock for synchronous serial communication |
| SDA | I²C data bidirectional | Open-drain data line shared with other I²C devices |
| INT | Interrupt output | Active-low signal indicating touch/proximity event or status change |
| RESET | Hardware reset input | Asynchronous active-low reset for full device initialization |
| P0[0]–P0[4] | CapSense/GPO I/O | Five pins configurable as CapSense sensors or general-purpose outputs |
| P1[0]–P1[4] | CapSense I/O | Five additional pins dedicated to CapSense electrode connections |
Key Features
| Feature | Design Value |
|---|---|
| Automotive qualification | AEC-Q100 Grade 2 certified - validated for automotive interior applications |
| Proximity sensing | Detects presence within ~5 cm without physical contact - enables wake-on-approach UI |
| SmartSense™ auto-tuning | Real-time baseline and sensitivity adjustment - eliminates factory calibration and field drift |
| Integrated GPOs | 5 dedicated output pins - drive status indicators or feedback actuators without external logic |
| Low-voltage operation | 1.71 V minimum supply - compatible with coin-cell and energy-harvesting systems |
Applications
| Automotive Infotainment Panel | Industrial HMI Control Surface |
|---|---|
Use Scenario: Touch-sensitive center console with slider volume control and proximity wake-up. IC Role / Device Role / Timing Role: Primary CapSense controller managing 10 electrodes including slider and proximity zone. Use Value: SmartSense™ maintains consistent touch response across temperature and humidity variations in vehicle cabins. | Use Scenario: Sealed operator panel in factory automation with glove-compatible button interface. IC Role / Device Role / Timing Role: Capacitive touch interface controller with ESD-hardened I/O and wide voltage range. Use Value: 1.71–5.50 V operation allows direct integration with 24 V DC-powered PLC backplanes via LDO. |
| Medical Device Keypad | Home Appliance Control Panel |
Use Scenario: Disinfectant-resistant front panel on infusion pump with tactile feedback. IC Role / Device Role / Timing Role: Touch controller with proximity sensing to detect hand approach before activation. Use Value: Proximity wake-up reduces power consumption during standby while maintaining instant responsiveness. | Use Scenario: Oven or washing machine control panel exposed to steam and condensation. IC Role / Device Role / Timing Role: CapSense interface with shielded electrode support and water tolerance algorithms. Use Value: Adaptive baseline tracking prevents false triggers caused by moisture accumulation on overlay. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar capacitive touch controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| CY8C201A0-12LKXI | 8 CapSense I/O, no proximity sensing, no SmartSense, 5 V only | Limited to non-automotive, fixed-voltage designs without environmental adaptation | Select when cost sensitivity outweighs auto-calibration and proximity needs |
| MTCH101-I/ST | 10-channel CapSense, no GPOs, no automotive qualification, 1.8–5.5 V | Consumer-grade only; lacks AEC-Q100 validation and integrated output drivers | Choose for high-volume consumer panels where automotive compliance is not required |
Compared with CY8C201A0-12LKXI and MTCH101-I/ST, CG8179AA uniquely combines AEC-Q100 qualification, proximity sensing, SmartSense™, and 5 integrated GPOs in a single SOIC-16 package-enabling compact, self-contained touch solutions for harsh-environment applications.
Availability
CG8179AA is available at Aetrix Electronics and suitable for automotive infotainment, industrial HMI, and medical device interfaces requiring stable component supply and long-term lifecycle assurance.
Supply support for CG8179AA 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
Cypress Semiconductor (now part of Infineon Technologies) designs high-performance mixed-signal ICs for embedded systems, focusing on programmable analog/digital architectures and human-machine interface solutions.
The CG8179AA belongs to the CapSense® family, engineered specifically for robust, low-power capacitive touch and proximity sensing in automotive and industrial environments.
FAQ
What is the maximum number of simultaneous touch points supported by CG8179AA?
The CG8179AA does not support multi-touch gesture decoding. It provides 10 independent CapSense channels for single-touch or proximity detection per channel, with firmware-level arbitration required for complex gesture interpretation.
Does CG8179AA require external components for basic CapSense operation?
No external RC network is needed for baseline CapSense operation. Only decoupling capacitors (0.1 µF ceramic near VDD/GND) and pull-up resistors on I²C lines are required. Shielding traces and optional guard rings may be added for enhanced noise immunity.
Is SmartSense™ configuration done at runtime or during firmware development?
SmartSense™ operates autonomously at runtime using internal algorithms. No host firmware configuration is required for baseline operation, though optional tuning parameters (e.g., scan speed, sensitivity offset) can be adjusted via I²C registers after initial deployment.
Can CG8179AA drive LEDs directly without current-limiting resistors?
No. Each GPO has a 4 mA sink/source capability at 3.3 V. External current-limiting resistors must be used to ensure LED forward current remains within safe operating limits and to prevent voltage droop affecting CapSense accuracy.
CG8179AA Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Package/Case:
- 16-SOIC (0.154", 3.90mm Width)
- Series:
- CAPSENSE™ Express™ SmartSense™
- Packaging:
- Tray
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Type:
- Buttons
- Proximity Detection:
- Yes
- Number of Inputs:
- Up to 16
- LED Driver Channels:
- Up to 16
- 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:
- 16-SOIC
CG8179AA FAQ
1.How can I place an order for CG8179AA through Aetrix?
Please submit a Request for Quotation (RFQ) for CG8179AA 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 CG8179AA reliable?
The price and inventory of CG8179AA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for CG8179AA is usually 5 days.
3.What payment methods are accepted for CG8179AA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for CG8179AA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for CG8179AA?
CG8179AA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your CG8179AA 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 CG8179AA?
For technical support, including CG8179AA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your CG8179AA requirements.
6.How does Aetrix verify that CG8179AA is sourced from the original manufacturer or authorized distributors?
All CG8179AA 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 CG8179AA meets industry standards.
7.What is the process for return or replacement of CG8179AA?
All CG8179AA units undergo pre-shipment inspection (PSI). If there is an issue with CG8179AA, 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 CG8179AA part is unused and in its original packaging.
Return procedure for CG8179AA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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