nRF902

·True single chip FSK/ASK transmitter ina small 8-pin package
·Adjustable output power  up to +10dBm 
·FSK data rate up to 50kbits/s 
·Very few external components 
·On-chip frequency synthesiser gives improved frequency stability compared tSAW solutions 
·Wide power supply range:  2.4 to 3.6 V 
·Low supply current, typical 9mA@ -10dBm output power 
·Power Down and Clock modes makes power saving easy 
·Reference Clock output pin for microcontroller

Supply voltages
V_DD.......................................... - 0.3V to +6V
V_SS .......................................................... 0V
Input voltage
V_I ................................ - 0.3V to V_DD + 0.3V
Output voltage
V_O.................................- 0.3V to V_DD + 0.3V
Power dissipation
P_D (T_A=85°C).....................................220mW
Temperatures
Operating Temperature.. -25°C to +85°C
Storage Temperature... -40°C to +125°C
Note: Stress exceeding one or more of the limiting values may cause permanent damage to the device. 

nRF902 is a single-chip transmitter for the 868 MHz ISM band, designed to comply with the ETSI specification I-ETS 300 220. Using nRF902 both FSK and ASK modulation is possible. The transmitter consists of a fully integrated frequency synthesiser, a power amplifier, a crystal oscillator and a modulator. Few external components are required: a 13.567 MHz crystal, two resistors and some decoupling capacitors. Due to the use of the crystal-oscillator stabilised frequency synthesiser, frequency drift is much lower than in comparable SAW-resonator based solutions. Output power is easily programmable by use of an external resistor. Current consumption is very low, only 9 mA at an output power of 10dBm. Built-in Clock and Power Down modes makes power saving and duty-cycling easily realisable.