LB-LINK BL-R8812AF1 Product Specification

Document Information

1. Introduction

The BL-R8812AF1 is based on the Realtek RTL8812AU chipset, functioning as a WLAN 11ac Dual Band module. It fully supports the features and functional compliance of IEEE 802.11 a/b/g/n/ac standards. This document outlines the engineering requirements specification.

1.1 RF Module Overview

The general hardware architecture of the module is depicted in Figure 1. This WLAN Module design utilizes the Realtek RTL8812AU, a highly integrated single-chip MIMO (Multiple In Multiple Out) Wireless LAN (WLAN) USB2.0 network interface controller that complies with the 802.11ac specification. It integrates MAC, a 2T2R capable baseband, and RF onto a single chip. The RTL8812AU provides a comprehensive solution for high-throughput wireless clients.

Figure 1: Module Block Diagram Description: The diagram illustrates the internal components of the BL-R8812AF1 module. It shows two antennas (Antenna A and Antenna B) connected to respective RF front-end (FE) modules, which include Low Noise Amplifiers (LNA) and Power Amplifiers (PA) for 2.4/5GHz bands. These connect to a transceiver, which interfaces with the RTL8812AU-VS chip. The chip contains the MAC, Configuration Control and Memory, and Baseband processing. It interfaces with external components such as NV Memory, a 40 MHz Crystal oscillator, and a USB Interface. Power is supplied via an external 3.3V power source. Additional interfaces include LED/GPIO Pins and a BT co-existence interface.

1.2 Specification Reference

This specification is based on the following references:

• IEEE Std. 802.11a
• IEEE Std. 802.11b
• IEEE Std. 802.11g
• IEEE Std. 802.11n
• IEEE Std. 802.11ac

1.3 System Functions

Table 1 presents the general specifications:

2. Product Picture

Top View Description: The top view shows the main component side of the module. Markings include "LB-LINK", "Happiness Sharing Technology", and the model name "BL-R8812AF1".

Bottom View Description: The bottom view displays the underside of the module, featuring a grid of solder pads and component markings. Prominent markings include "94V-0", "S Y16M03D05", and "JUB7.820.1607".

Note: The pictures are for reference only. Supplier's logo and batch number may vary.

2.1 Mechanical Specification

2.1 Mechanical Outline Drawing

The typical dimensions of the module are 27.00mm (Length) x 17.80mm (Width) x 3.5mm (Height).

Note: General tolerance is ±0.15mm unless otherwise stated.

2.2 Pin Definition

The module features 12 pins, detailed in the following diagram and table.

Pin Definition Diagram Description: The diagram shows the top view of the chip package with pins labeled H1 through H12. The corresponding pin numbers and names are provided in the table below.

3. Electrical Specification

This specification is based on conductive DVT testing results. Extreme conditions include overall temperature (0°C, +25°C, +60°C) and overall voltage (3.0V, 3.3V, 3.6V).

3.1 IEEE 802.11a Section:

3.2 IEEE 802.11b Section:

3.3 IEEE 802.11g Section:

3.4 IEEE 802.11n HT20 (2.4G) Section:

3.5 IEEE 802.11n HT20 (5G) Section:

3.6 IEEE 802.11n HT40 (2.4G) Section:

3.7 IEEE 802.11n HT40 (5G) Section:

3.8 IEEE 802.11ac HT20 Section:

3.9 IEEE 802.11ac HT40 Section:

3.10 IEEE 802.11ac HT80 Section:

4. Software Requirements

The driver supports the following operating systems: Linux, Microsoft Windows XP, Vista, and Win7.

5. Product Application

Consumer electronic devices such as DTVs, DVD players, wireless routers, and Blu-ray players.

6. Installation

1. The product should not be collocated with other radio devices.
2. The host label should contain the modular FCC ID: 2AL6K-R8812AF1.
3. If purchasing this module, ensure satisfaction with the antenna:
   • a: The antenna type should connect to an external antenna via the provided connector. (See picture for details).
   • b: The antenna gain should be ≤ 6dBi.
4. Installation:
   • (a) Pay attention to the position of the module's welding feet. Refer to the diagram and pin definition table for details.
   • (b) Welding on the client's main board should be performed according to the requirements.

Antenna Picture Description: An image showing a small connector, typically used for attaching an external antenna to the module.

FCC Statement

This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:

• Reorient or relocate the receiving antenna.
• Increase the separation between the equipment and receiver.
• Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
• Consult the dealer or an experienced radio/TV technician for help.

This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation. Changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment.

This equipment complies with FCC radiation exposure limits set forth for an uncontrolled environment. This equipment should be installed and operated with a minimum distance of 20cm between the radiator and your body.