NRF2401A 查看數據表（PDF） - Unspecified

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NRF2401A

Single chip 2.4 GHz Transceiver

Unspecified 

PRODUCT SPECIFICATION

nRF2401A Single Chip 2.4 GHz Radio Transceiver

ShockBurst™

The ShockBurst™ technology uses on-chip FIFO to clock in data at a low data rate

and transmit at a very high rate thus enabling extremely power reduction.

When operating the nRF2401A in ShockBurst™, you gain access to the high data

rates (1 Mbps) offered by the 2.4 GHz band without the need of a costly, high-speed

micro controller (MCU) for data processing.

By putting all high speed signal processing related to RF protocol on-chip, the

nRF2401A offers the following benefits:

• Highly reduced current consumption

• Lower system cost (facilitates use of less expensive micro controller)

• Greatly reduced risk of ‘on-air’ collisions due to short transmission time

The nRF2401A can be programmed using a simple 3-wire interface where the data

rate is decided by the speed of the micro controller.

By allowing the digital part of the application to run at low speed while maximizing

the data rate on the RF link, the nRF ShockBurst™ mode reduces the average current

consumption in applications considerably.

ShockBurst™ principle

When the nRF2401A is configured in ShockBurst™, TX or RX operation is

conducted in the following way (10 kbps for the example only).

8-bit

MCU

Continuous 10kbps

nRF2401A

FIFO

ShockBurstTM 1Mbps

Figure 4 Clocking in data with MCU and sending with ShockBurst technology

Without ShockBurstTM, running at speed dictated by 10Kbs MCU

10mA periode

10mA period 10Kbs MCU with ShockBurstTM

0

20

40

60

80

100 120 140 160 180 200 220 240

Time mS

Figure 5 Current consumption with & without ShockBurst technology

Nordic Semiconductor ASA - Vestre Rosten 81, N-7075 Tiller, Norway - Phone +4772898900 - Fax +4772898989

Revision: 1.1

Page 10 of 40

March 2006

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