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NRF902 Datasheet, PDF (1/13 Pages) List of Unclassifed Manufacturers – Single chip 868 MHz Transmitter | |||
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PRELIMINARY PRODUCT SPECIFICATION
Single chip 868 MHz Transmitter
nRF902
FEATURES
APPLICATIONS
⢠True single chip FSK/ASK transmitter in ⢠Automatic Meter Reading
a small 8-pin package
⢠Keyless entry
⢠Adjustable output power up to +10dBm ⢠Wireless data communication
⢠FSK data rate up to 50kbits/s
⢠Alarm and security systems
⢠Very few external components
⢠Home Automation
⢠On-chip frequency synthesiser gives
⢠Remote control
improved frequency stability compared to ⢠Surveillance
SAW solutions
⢠Automotive
⢠Wide power supply range: 2.4 to 3.6 V ⢠Telemetry
⢠Low supply current, typical 9mA
⢠Toys
@ -10dBm output power
⢠Power Down and Clock modes makes
power saving easy
⢠Reference Clock output pin for
microcontroller
GENERAL DESCRIPTION
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 â10dBm. Built-in Clock
and Power Down modes makes power saving and duty-cycling easily realisable.
QUICK REFERENCE DATA
Parameter
Value
Minimum supply voltage
2.4
Maximum output power
10
Maximum FSK data rate
50
Maximum ASK data rate
10
Supply current FSK transmitter @ -10dBm output power
9
Supply current in Clock mode
200
Supply current in Power Down mode
<10
Table 1. nRF902 quick reference data
Unit
V
dBm
kbit/s
kbit/s
mA
µA
nÎ
Main office: Nordic VLSI ASA - Vestre Rosten 81, N-7075 Tiller, Norway - Phone +4772898900 - Fax +4772898989
Revision: 1.0
Page 1 of 13
April 2000
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