NRF902 Datasheet, PDF (1/13 Pages) List of Unclassifed Manufacturers – Single chip 868 MHz Transmitter

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 –10dBm. 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
nΑ
Main office: Nordic VLSI ASA - Vestre Rosten 81, N-7075 Tiller, Norway - Phone [phone] - Fax [phone]
Revision: 1.0
Page 1 of 13
April 2000