Description
1.1 Process
This 5-GHz power amplifier (PA) is designed using Atmel’s Silicon-Germanium (SiGe) process and provides high efficiency.

1.2 Circuitry
The PA, ATR7040, consists of a three-stage amplifier with a typical output power of 25 dBm. The output stage was implemented using an open-collector structure. Power up, power down, and output level are controlled at bias control pin 6 (Vctl).

Features
• Frequency Range 5 GHz to 6 GHz
• Pout 25 dBm at 5.8 GHz
• Gain Typically 30 dB
• Pin Typically 0 dBm
• VCC 2.7V to 3.8V
• Power Consumption in Power-down Mode Typically < 1 µA
• Package: QFN16 3 mm × 3 mm

Benefits
• Biasing Control Extends Battery Time
• Simple Input and Output Matching
• Only One Single Supply Required
• No High-side Switching Transistor Required