Datasheet > NRF902

NRF902

更新时间： 2022-11-24 21:40:20

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描述
Single chip 868 MHz Transmitter

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NRF902 数据手册

PRELIMINARY PRODUCT SPECIFICATION

Single chip 868 MHz Transmitter

nRF902

FEATURES

APPLICATIONS

True single chip FSK/ASK transmitter in

a small 8-pin package

Automatic Meter Reading

Keyless entry

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 to

SAW solutions

Wide power supply range: 2.4 to 3.6 V

Low supply current, typical 9mA

@ -10dBm output power

Wireless data communication

Alarm and security systems

Home Automation

Remote control

Surveillance

Automotive

Telemetry

Toys

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

2.4

200

<10

Unit

dBm

kbit/s

Minimum supply voltage

Maximum output power

Maximum FSK data rate

Maximum ASK data rate

Supply current FSK transmitter @ -10dBm output power

Supply current in Clock mode

Supply current in Power Down mode

Table 1. nRF902 quick reference data

Main office: Nordic VLSI ASA

Revision: 1.0

Vestre Rosten 81, N-7075 Tiller, Norway

Phone +4772898900

Fax +4772898989

April 2000

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