The HFA1100IP is an integrated circuit (IC) manufactured by Intersil. It is a low-power, low-noise, dual-channel, direct-conversion receiver for 2.4 GHz IEEE 802.11b wireless LAN applications.

Features:

• Low-power operation
• Low-noise performance
• Dual-channel direct-conversion receiver
• On-chip voltage regulator
• On-chip crystal oscillator
• On-chip IF filter
• On-chip AGC
• On-chip RSSI
• On-chip temperature sensor

Applications:

• Wireless LANs
• Bluetooth
• Home networking
• Wireless audio/video systems
• Wireless security systems(For reference only) https://www.utsource.net/itm/p/117458.html