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Product Description The GSR2501 is a high performance, fully integrated RF front end module (FEM) designed for Bluetooth (including EDR), Zigbee applications. The device provides all the functionality of a fully matched power amplifier (PA), low-noise amplifier (LNA), and two single-pole, triple-throw (SP3T) switches. The GSR2501 provides a complete 2.4 GHz WLAN RF solution from the output of the transceiver to the antenna, and from the antenna to the input of the transceiver. The LNA increases the receive sensitivity of embedded solutions to improve range. The low ins***ion loss and low current bypass mode decrease the power consumption when working in a good signal environment. The GSR2501 also includes digital enable control pins for power ramp on/off control. The RF blocks operate over a wide supply voltage range from 3.0 V to 5.2 V that allows the GSR2501 to be used in lithium battery powered applications. The device is provided in a compact, 16-pin 2.3 x 2.3 mm Quad Flat No-Lead (QFN) package. Pin map is shown in Figure 1. A functional block diagram is shown in Figure 2. Key Features l Saturated output power: 22.5 dBm@3.3 V l EDR power up to 14 dBm l Integrated LNA (1.5 dB noise figure) l Low Ins***ion Loss Bypass Mode l Single ended transmit/receive inte***ce l Input and output matched to 50 ohm l Wide supply range ( 3.0 V to 5.2 V) l No external bias resistor is required l High Impedance Control Pin Applications l Range extender l Wireless sound and audio systems l Custom 2.4 GHz radio systems l Wireless sensor ***works l Zigbee smart power l Zigbee extended range devices
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