Application

The RF transceiver is integrated with a highly configurable baseband modem. The modem supports various modulation formats and has a configurable data rate up to 250 Kbps. The communication range can be increased by enabling a Forward Error Correction option, which is integrated in the modem.
TRW-811S provides extensive hardware support for packet handling, data buffering, burst transmissions, clear channel assessment, link quality indication and wake-on-radio.The main operating parameters and the 64-byte transmit/receive FIFOs of TRW-811S can be controlled via an SPI interface. In a typical system, the TRW-811S will be used together with a microcontroller and a few additional passive components.

Key Feature

Small size
Separate 64-byte RX and TX data FIFOs
Efficient SPI interface: All registers can be programmed with one "burst" transfer
Programmable output power up to +10dBm
High sensitivity (-111 dBm at 1.2 Kbps, 1% packet error rate)

Absolute Maximum Rating

Parameter	Min	Max	Unit	Condition/Note
Supply Voltage	2.7	3.3	V
Voltage on Any Digital Pin	-0.3	VDD+0.3	V
Input RF Level		+10	dBm
Storage Temperature Range	-50	150	℃
ESD		<50	V	According to JEDEC STD 22, method A114, Human Body Model

General Characteristic and Electrical Specification

Parameter	Min	Type	Max	Unit	Condition/Note
Frequency Range	300		928	MHz
Data Rate	1.2		250	Kbps
Power Down Modes		400		nA	Voltage regulator to digital part off, register values retained (sleep state)
Current Consumption, RX		16		mA
Current Consumption, TX		30		mA	Transmit mode, +10dBm output power
Receiver Sensitivity	1.2K data rate -111dBm
Transmit Output Power			+10	dBm	Transmit mode

I have a question:

Wireless Low Cost 900MHz RF Transceiver Module

TRW-811S