RTL8188EUS-VH-CG datasheet & price | pdf

Antena wifi Realtek RTL8188EUS USB de una tablet descompuesta

RTL8188EUS-VH-CG

The RTL8188EUS-VH-CG is a USB WiFi controller from Realtek that’s widely used in compact USB WiFi modules. It supports 802.11b/g/n standards, giving you speeds up to 150Mbps—good enough for regular browsing and streaming videos. It comes with built-in USB 2.0 PHY, running smoothly on the common 2.4GHz band. Plus, it integrates an LNA, power amplifier, and RF switch, saving you from adding extra RF components. You can use either a PCB antenna or an external antenna through an IPEX connector. It’s also fully compatible with Linux, Windows, and Android, perfect for your DIY wireless projects.

RTL8188EUS-VH-CG Pinout

When using the RTL8188EUS chip, pay close attention to the power pins—they each need proper decoupling capacitors for stable and clean voltage. RF lines should be designed with 50Ω impedance and routed away from digital signals to avoid noise. For the crystal oscillator, pick a 25MHz or 40MHz crystal and correctly configure the XI/XO and USB_XTAL_SEL pins; the XO pin can even supply an external clock. Some pins have multiple functions (like LEDs or GPIO), set these through registers. Finally, keep USB differential pair lengths matched and impedance controlled for best signal quality.

RTL8188EUS-VH-CG Equivalent

If you’re replacing the RTL8188EUS-VH-CG, the RTL8188EUS-CG and RTL8188ETV-CG are pin-to-pin compatible—just double-check drivers and certifications, as batches may vary slightly. Or, you can try the MOD-WIFI-RTL8188EUS module. It’s easy to use since it comes with built-in antenna and connectors, but it’s bulkier and pricier, requiring PCB adjustments. Simply put, the module is perfect for quick prototypes, while the chip versions suit mass production better.

RTL8188EUS-VH-CG USB WiFi Circuit Example