会社ブログについて Recycle Qorvo Evaluation Board: VPIN Limiter,CATV Amplifier,Digital Step Attenuator

Recycle Qorvo Evaluation Board: VPIN Limiter,CATV Amplifier,Digital Step Attenuator

Shenzhen Mingjiada Electronics Co., Ltd. is a globally renowned recycler of electronic components. Through professional recycling services to help customers realise the value of idle electronic components, with strong economic strength and perfect service system, won the long-term trust and cooperation of many factory customers and traders.

Recycling products include: 5G chips, new energy ICs, IoT ICs, Bluetooth ICs, Telematics ICs, automotive ICs, automotive grade ICs, communication ICs, artificial intelligence ICs, memory ICs, sensor ICs, microcontroller ICs, transceiver ICs, Ethernet ICs, WiFi chips, wireless communication modules, connectors and other electronic components.

Recycling Process:

1、Inventory classification and list submission

Customers firstly classify the backlog of inventory to determine the model, brand, production date, quantity, package form and packaging status. Customers can send the detailed inventory list to our valuation team via email or fax.

2、Professional evaluation and quotation

Upon receipt of the inventory list, the company will complete the initial evaluation and provide feedback on the quotation proposal within 24 hours.

3、Agreement signing and logistics arrangement

After both parties agree on the price, a formal recycling contract is signed to clarify the details of the transaction.

4、Goods inspection and quick payment

After the goods arrive at the warehouse, the final quality verification of the products will be carried out. After passing the inspection, the company promises to complete the payment within 3 working days to ensure that the customer quickly back to the capital. Payment methods are flexible and can be arranged according to customer demand in the form of wire transfer, cash and other forms.

CATV Amplifier Evaluation Board: Enabling Lossless Transmission of Broadband Signals

CATV networks demand amplifiers with exceptional linearity, low noise, and outstanding return loss across wide bandwidths (e.g., 40MHz to 1000MHz and beyond) to support distortion-free transmission of multi-channel high-definition signals. Qorvo's GaAs (Gallium Arsenide) process amplifier modules, such as the D10040250GT and D10040270GT, are engineered for this purpose. They typically deliver over 24dB of gain while maintaining stability across the entire frequency band.

To help engineers accurately evaluate and integrate these amplifiers, Qorvo offers several dedicated evaluation boards. For example, the QPL7420EVB evaluation board is specifically designed for evaluating the QPL7420 amplifier IC, suitable for 75Ω cable TV and satellite applications. Similarly, the QPL1819EVB-01 and QPL1821EVB-01 evaluation boards form complete demonstration and development platforms.

Digital Step Attenuator Evaluation Boards: Enabling Precise RF Signal Control

In RF systems, precise control of signal power levels is critical for applications such as automatic gain control (AGC), power calibration, and signal protection. Qorvo's digital step attenuators (DSAs), like the QPC3624 and QPC4614, are ideal choices due to their high precision, high linearity, and fast switching capabilities.

Both the QPC3624 and QPC4614 are 6-bit attenuators offering 0.5dB steps with a total attenuation range of 31.5dB. They exhibit an insertion loss of just 1.2dB at 1GHz and maintain high linearity across a wide bandwidth (5MHz-2000MHz for the QPC4614), with typical IIP3 reaching 69dBm. Their patented circuit architecture ensures no overshoot transients during switching, with typical switching speeds faster than 250 nanoseconds.

VPIN Limiter: The “Guardian” of the Receive Channel

The VPIN limiter is a critical component protecting sensitive receiver elements (such as low-noise amplifiers) from damage by high-power incident signals (e.g., radar pulses, jamming signals). Its core principle involves exhibiting low insertion loss at low input power while automatically activating at high power to limit output power to safe levels. Qorvo's TGL2205 exemplifies a high-performance broadband VPIN limiter.

Operating across the 1-6GHz frequency range, the TGL2205 features low insertion loss down to 0.5dB and 12dB return loss. It withstands input pulse power up to 100W while limiting leakage power below 16dBm. Crucially, it requires no DC bias, simplifying system design. The TGL2201-SM covers an even broader 2-12 GHz band and is equally suitable for receiver protection in radar and phased array systems.