nRF902 Datasheet | Nordic Semiconductor

PRELIMINARY PRODUCT SPECIFICATION Single chip 868 MHz Transmitter Features - - - - - n RF902 APPLICATIONS - - - - - - - - - - - - - - True single chip FSK/ASK transmitter in a small 8-pin package Adjustable output power up to +10d Bm FSK data rate up to 50kbits/s Very few external ponents On-chip frequency synthesiser gives improved frequency stability pared to SAW solutions Wide power supply range: 2.4 to 3.6 V Low supply current, typical 9m A @ -10d Bm output power Power Down and Clock modes makes power saving easy Reference Clock output pin for microcontroller Automatic Meter Reading Keyless entry Wireless data munication Alarm and security systems Home Automation Remote control Surveillance Automotive Telemetry Toys GENERAL DESCRIPTION n RF902 is a single-chip transmitter for the 868 MHz ISM band, designed to ply with the ETSI specification I-ETS 300 220. Using n RF902 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 ponents 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 parable SAW-resonator based solutions. Output power is easily programmable by use of an external resistor. Current consumption is very low, only 9 m A at an output power of - 10d Bm. Built-in Clock and Power Down modes makes power saving and duty-cycling easily realisable. QUICK REFERENCE DATA Parameter Minimum supply voltage Maximum output power Maximum FSK data rate Maximum ASK data rate Supply current FSK transmitter @ -10d Bm output power Supply current in Clock mode Supply current in Power Down mode Value 2.4 10 50 10 9 200 <10 Unit V d Bm kbit/s kbit/s m A µA nΑ Table 1. n RF902 quick reference data Main office: Nordic VLSI ASA - Vestre Rosten 81, N-7075 Tiller, Norway Revision: 1.0 Page 1 of...