company blog about Recycle Semtech Smart Sensing:PerSe Connect,PerSe Contact,PerSe Control,IO Expanders

Recycle Semtech Smart Sensing:PerSe Connect,PerSe Contact,PerSe Control,IO Expanders

Shenzhen Mingjiada Electronics has specialised in the recycling of original integrated circuits for over twenty years. Headquartered in Shenzhen, the company serves global markets, offering long-term, high-value cash-on-delivery recycling services for a wide range of electronic components and chips. We provide centralised procurement services for corporate clients, component distributors, unsold factory stock, surplus trading stock and clearance stock. Whether the components are brand-new from the original manufacturer, new in bulk or refurbished, we can provide quotations and help clients realise the value of their surplus stock and quickly recover working capital through a one-stop solution.

[Key Advantages of Our Recycling Service]

1. Highly competitive pricing: We closely monitor market trends set by original manufacturers and offer high-value cash payments.

Leveraging our global semiconductor supply chain network, we monitor market prices in real time. We prioritise high-value purchases for factory-sealed, full-reel chips; simultaneously, we provide fair valuations for loose components, tape-and-reel packaging and bare chips, ensuring there is no unfair price suppression. For chips of the same model and condition, our quotes exceed industry standards, and we offer on-site price negotiation services for bulk transactions.

2. Flexible settlement: Multiple payment methods, rapid payment

We support on-site cash settlement, corporate bank transfers and advance deposits. For small parcels, payment is made immediately upon inspection and signature; for large volumes of factory stock, we can arrange on-site inspection and settlement. We also offer consignment and commissioned sales arrangements, allowing you to choose the monetisation solution that best suits your needs.

3. Global Collection: Multi-warehouse network, hassle-free logistics

Goods can be received simultaneously at our Shenzhen headquarters and Hong Kong warehouse. We handle both domestic and international shipments. For clients outside our local area, we support the dispatch of insured samples via SF Express or DHL; shipping costs are negotiable. We strictly adhere to relevant regulations and source stock exclusively from legitimate factories and authorised dealers, ensuring safe and reliable transactions.

[Streamlined Recycling Partnership Process]

Enquiry and Quotation: Clients provide a list (model, quantity, year of manufacture, packaging, condition and photographs of the items); An accurate quotation is provided within 1–4 hours;

Sample Verification: Small items may be sent for testing; for bulk consignments, an appointment can be made for Mingjiada staff to visit the premises to carry out a physical inventory and inspection;

Contract Signing and Transaction: Both parties confirm the price and sign the formal buy-back agreement;

Dispatch and Settlement: Full payment is arranged immediately upon receipt of the customer’s goods and completion of inspection and acceptance.

I. PerSe® Connect: RF SAR Human Presence Detection, Optimising Wireless Connection Performance

PerSe Connect is a series of SAR (Specific Absorption Rate) human presence sensors designed for 5G and Wi-Fi 7 mobile terminals, with representative models including the SX9320 and SX9338. Its core mission is to balance wireless communication performance with global RF safety standards.

- Core Capabilities: Multi-channel capacitive sensing that detects human proximity to the device in real time and dynamically adjusts RF transmission power; transmission power is reduced only when a person is in close proximity, whilst high RF throughput is maintained when the user is further away, thereby avoiding the degradation in network speed caused by a blanket reduction in power. Features built-in automatic calibration and temperature drift compensation, with strong resistance to environmental interference.

- Electrical Characteristics: Ultra-low power consumption, compact packaging, I²C 400 kHz communication interface, wide operating temperature range of –40 °C to +85 °C.

- Typical Applications: Smartphones, tablets and laptops, ensuring SAR compliance whilst enhancing 5G/Wi-Fi connection stability and overall device battery life.

II. PerSe® Contact: Human-Interaction Sensing for Wearable Devices

PerSe Contact specialises in human contact detection and gesture interaction for wearable devices. Representative models include the SX9206 and SX9210, which provide lightweight, low-power human-machine interaction interfaces.

- Core capabilities: Multi-channel capacitive sensing, supporting in-ear/on-wrist detection, slider/scroll wheel gesture recognition, tap control, automatic power on/off, and voice assistant activation; built-in dedicated gesture algorithms; sensor electrodes can be miniaturised to facilitate compact product designs.

- Electrical Characteristics: Extremely low power consumption in sleep mode, meeting the stringent battery life requirements of wearable devices; supports independent configuration of multiple channels and I²C host communication.

- Typical Applications: Wearable devices such as TWS earphones, smartwatches, fitness trackers and smart glasses, enabling interaction functions including wear detection, touch gestures and media control.

III. PerSe® Control: High-Reliability Touch and Proximity Sensing for Automotive and Industrial Applications

PerSe Control is designed for automotive electronics and industrial HMI applications, providing high-resolution touch and proximity sensing. The flagship model, the SX9331WQ, is characterised by high robustness, a wide operating temperature range and resistance to harsh environments.

- Core Capabilities: Multi-channel proximity and touch detection, supporting long-range human proximity sensing, touch-sensitive buttons, and liquid level/weight monitoring; supports human-machine interaction in applications such as vehicle door handle sensing, touchless boot opening, in-cabin hand-away detection, industrial touchscreen terminals and POS devices. Features strong anti-interference capabilities and is suitable for complex operating conditions involving high temperatures, humidity and electromagnetic interference.

- Electrical Characteristics: Automotive-grade wide temperature range, high-resolution sampling, configurable detection thresholds, and support for interrupt output to reduce the overhead of host polling.

- Typical Applications: Automotive cockpit HMIs, touch-sensitive door handles, industrial control panels, smart access control systems, and industrial liquid level and material monitoring equipment.

IV. I/O Expanders: GPIO Expansion for the PerSe Sensing System

Semtech IO expanders (SX1508B and SX1509B series), as complementary hardware for the PerSe sensing solution, are ultra-low-voltage general-purpose GPIO expansion chips. They extend the host controller’s GPIO resources via the I²C serial bus and, when paired with PerSe sensors, enable hardware expansion for multi-channel sensing signals, push-button inputs and LED control.

- Key Features: Provides 4/8/16-channel GPIO with a wide supply voltage range of 1.2V to 5.5V; supports level conversion without the need for additional level-shifting components; GPIO pins can be independently configured as inputs, outputs, interrupts or pull-ups; features programmable LED driving and supports button detection.

- Electrical Characteristics: Low-power design, suitable for battery-powered handheld devices; I²C 400 kHz interface; compact package, simplifying PCB layout and alleviating the issue of insufficient host controller pin resources.

- Typical Applications: Mobile phones, wearables, industrial control boards; when paired with PerSe series sensors, it expands multi-channel sensor electrodes, status indicator lights and external button interfaces, simplifying the overall hardware architecture.