NRF2401G IC Nordic VLSI, NRF2401G IC Datasheet

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NRF2401G IC

Manufacturer Part Number
NRF2401G IC
Description
RF Transceiver, Single chip 2.4GHz Transceiver, 24-QFN
Manufacturer
Nordic VLSI
Datasheet
PRODUCT SPECIFICATION
Single chip 2.4 GHz Transceiver
FEATURES
GENERAL DESCRIPTION
nRF2401 is a single-chip radio transceiver for the world wide 2.4 - 2.5 GHz ISM
band. The transceiver consists of a fully integrated frequency synthesizer, a power
amplifier, a crystal oscillator and a modulator. Output power and frequency channels
are easily programmable by use of the 3-wire serial interface. Current consumption is
very low, only 10.5mA at an output power of -5dBm and 18mA in receive mode.
Built-in Power Down modes makes power saving easily realizable.
QUICK REFERENCE DATA
Minimum supply voltage
Maximum output power
Maximum data rate
Supply current in transmit @ -5dBm output power
Supply current in receive mode
Temperature range
Sensitivity
Supply current in Power Down mode
Nordic Semiconductor ASA - Vestre Rosten 81, N-7075 Tiller, Norway -
Revision: 1.1
True single chip GFSK transceiver in a small
24-pin package (QFN24 5x5mm)
Data rate 0 to1Mbps
Only 2 external components
Multi channel operation
Data slicer / clock recovery of data
Address and CRC computation
DuoCeiver™ for simultaneous dual receiver
topology
ShockBurst™ mode for ultra-low power
operation and relaxed MCU performance
Power supply range: 1.9 to 3.6 V
Low supply current (TX), typical 10.5mA peak
@ -5dBm output power
Low supply current (RX), typical 18mA peak in
receive mode
100 % RF tested
No need for external SAW filter
World wide use
125 channels
Channel switching time <200 s.
Support frequency hopping
Parameter
Table 1 nRF2401 quick reference data
Page 1 of 39
-40 to +85
Value
APPLICATIONS
1000
10.5
400
Phone +4772898900
1.9
-90
18
0
Wireless mouse, keyboard, joystick
Keyless entry
Wireless data communication
Alarm and security systems
Home automation
Surveillance
Automotive
Telemetry
Intelligent sports equipment
Industrial sensors
Toys
nRF2401
-
Fax +4772898989
Unit
dBm
kbps
dBm
mA
mA
nA
V
C
June 2004

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NRF2401G IC Summary of contents

Page 1

PRODUCT SPECIFICATION Single chip 2.4 GHz Transceiver FEATURES True single chip GFSK transceiver in a small 24-pin package (QFN24 5x5mm) Data rate 0 to1Mbps Only 2 external components Multi channel operation 125 channels Channel switching time <200 s. Support frequency ...

Page 2

... PRODUCT SPECIFICATION nRF2401 Single Chip 2.4 GHz Radio Transceiver Type Number NRF2401 IC NRF2401G IC NRF2401-EVKIT Evaluation kit (2 test PCB, 2 configuration PCB, SW) Table 2 nRF2401 ordering information BLOCK DIAGRAM PWR_UP DuoCeiver ShockBurst DEMOD CE Clock Recovery, DR2 DataSlicer DOUT2 ADDR Data Channel 2 Decode CLK2 CRC Code/Decode ...

Page 3

PRODUCT SPECIFICATION nRF2401 Single Chip 2.4 GHz Radio Transceiver PIN FUNCTIONS Pin Name Pin function 1 CE Digital Input 2 DR2 Digital Output 3 CLK2 Digital I/O 4 DOUT2 Digital Output 5 CS Digital Input 6 DR1 Digital Output 7 ...

Page 4

PRODUCT SPECIFICATION nRF2401 Single Chip 2.4 GHz Radio Transceiver ELECTRICAL SPECIFICATIONS Conditions: VDD = +3V, VSS = 0V, T Symbol Parameter (condition) Operating conditions VDD Supply voltage TEMP Operating Temperature Digital input pin V HIGH level input voltage IH V ...

Page 5

PRODUCT SPECIFICATION nRF2401 Single Chip 2.4 GHz Radio Transceiver PACKAGE OUTLINE, PUNCH TYPE nRF2401G uses the GREEN QFN24 5x5 package, with matt tin plating. Dimensions are in mm. Package Type A Punch QFN24 Min 0.8 (5x5 mm) typ. Max 0.9 ...

Page 6

PRODUCT SPECIFICATION nRF2401 Single Chip 2.4 GHz Radio Transceiver PACKAGE OUTLINE, SAW TYPE nRF2401 uses the QFN 24LD 5x5 package, only available with SnPb plating. Dimensions are in mm. Package Type A QFN24 Min 0.8 (5x5 mm) typ. Max 1 ...

Page 7

PRODUCT SPECIFICATION nRF2401 Single Chip 2.4 GHz Radio Transceiver Absolute Maximum Ratings Supply voltages VDD............................ - 0. 3.6V VSS ...................................................0V Input voltage V ........................- 0.3V to VDD + 0.3V I Output voltage V .......................- 0.3V to VDD + ...

Page 8

PRODUCT SPECIFICATION nRF2401 Single Chip 2.4 GHz Radio Transceiver Glossary of Terms Term CLK CRC GFSK ISM MCU OD PWR_DWN PWR_UP RX ST_BY TX Nordic Semiconductor ASA - Vestre Rosten 81, N-7075 Tiller, Norway - Revision: 1.1 ...

Page 9

PRODUCT SPECIFICATION nRF2401 Single Chip 2.4 GHz Radio Transceiver MODES OF OPERATION Overview The nRF2401 can be set in the following main modes depending on three control pins: Mode Active (RX/TX) Configuration Stand by Power down Table 6 nRF2401 main ...

Page 10

PRODUCT SPECIFICATION nRF2401 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 ...

Page 11

PRODUCT SPECIFICATION nRF2401 Single Chip 2.4 GHz Radio Transceiver NO nRF2401 in TM ShockBurst TX (CE=hi)? YES uController Loading ADDR and PAYLOAD data nRF2401 Calculating CRC NO CE=Low? YES nRF2401 Pre- Adding Preamble amble nRF2401 Sending TM ShockBurst Package (250 ...

Page 12

PRODUCT SPECIFICATION nRF2401 Single Chip 2.4 GHz Radio Transceiver nRF2401 ShockBurst RX? YES nRF2401 Detects PREAMBLE and Incoming Data NO Correct ADDR? YES nRF2401 Receives Data and Checking CRC NO nRF2401 Checks: Correct CRC? YES nRF2401 Set ...

Page 13

PRODUCT SPECIFICATION nRF2401 Single Chip 2.4 GHz Radio Transceiver nRF2401 ShockBurst™ Receive: MCU interface pins: CE, DR1, CLK1 and DATA (one RX channel receive) 1. Correct address and size of payload of incoming RF packages are set when nRF2401 is ...

Page 14

PRODUCT SPECIFICATION nRF2401 Single Chip 2.4 GHz Radio Transceiver DuoCeiver™ Simultaneous Two Channel Receive Mode In both ShockBurst™ & direct modes the nRF2401 can facilitate simultaneous reception of two parallel independent frequency channels at the maximum data rate. This means: ...

Page 15

PRODUCT SPECIFICATION nRF2401 Single Chip 2.4 GHz Radio Transceiver Configuration Mode In configuration mode a configuration word bytes is downloaded to nRF2401. This is done through a simple 3-wire interface (CS, CLK1 and DATA). For more ...

Page 16

PRODUCT SPECIFICATION nRF2401 Single Chip 2.4 GHz Radio Transceiver Pin configuration for the different modes of nRF2401 nRF2401 MODE SWITCHES MODES RXMODE ShockBurst X X Power down 0 1 Power down Power down 1 1 Stand Stand ...

Page 17

PRODUCT SPECIFICATION nRF2401 Single Chip 2.4 GHz Radio Transceiver DEVICE CONFIGURATION All configuration of the nRF2401 is done via a 3-wire interface to a single configuration register. The configuration word can bytes long for ShockBurst™ use ...

Page 18

PRODUCT SPECIFICATION nRF2401 Single Chip 2.4 GHz Radio Transceiver Configuration Word overview Bit Number position of bits 143:120 24 TEST 119:112 8 DATA2_W 111:104 8 DATA1_W 103:64 40 ADDR2 63:24 40 ADDR1 23:18 6 ADDR_W 17 1 CRC_L 16 1 ...

Page 19

PRODUCT SPECIFICATION nRF2401 Single Chip 2.4 GHz Radio Transceiver Configuration Word Detailed Description The following describes the function of the 144 bits (bit 143 = MSB) that is used to configure the nRF2401. General Device Configuration: bit[15:0] ShockBurst™ Configuration: bit[119:16] ...

Page 20

PRODUCT SPECIFICATION nRF2401 Single Chip 2.4 GHz Radio Transceiver ShockBurst™ configuration: The section bit[119:16] contains the segments of the configuration register dedicated to ShockBurst™ operational protocol. After VDD is turned on ShockBurst™ configuration is done once and remains set whilst ...

Page 21

PRODUCT SPECIFICATION nRF2401 Single Chip 2.4 GHz Radio Transceiver ADDRx 103 102 101 … …. Table 13 Address of receiver #2 and receiver #1. Bit 103 – 64: ADDR2: Receiver address channel bit. ...

Page 22

PRODUCT SPECIFICATION nRF2401 Single Chip 2.4 GHz Radio Transceiver General device configuration: This section of the configuration word handles RF and device related parameters. Modes: RX2_EN CM RFDR_SB Table 15 RF operational settings. Bit 15: RX2_EN: Logic ...

Page 23

PRODUCT SPECIFICATION nRF2401 Single Chip 2.4 GHz Radio Transceiver Bit 9-8: RF_PWR: Sets nRF2401 RF output power in transmit mode: RF OUTPUT POWER D9 Table 17 RF output power setting. RF channel & direction 7 6 Table 18 Frequency channel ...

Page 24

PRODUCT SPECIFICATION nRF2401 Single Chip 2.4 GHz Radio Transceiver DATA PACKAGE DESCRIPTION PRE-AMBLE ADDRESS Figure 12 Data Package Diagram The data packet for both ShockBurst™ mode and direct mode communication is divided into 4 sections. These are: 1. PREAMBLE 2 ...

Page 25

PRODUCT SPECIFICATION nRF2401 Single Chip 2.4 GHz Radio Transceiver IMPORTANT TIMING DATA The following timing applies for operation of nRF2401. nRF2401 Timing Information nRF2401 timing PWR_DWN è Configuration mode PWR_DWNè Active mode (RX/TX) ST_BY è TX ShockBurst™ ST_BY è TX ...

Page 26

PRODUCT SPECIFICATION nRF2401 Single Chip 2.4 GHz Radio Transceiver PWR_UP CS CE CLK1 DATA Figure 14 Power down (or VDD off) to active mode Note that the configuration word will be lost when VDD is turned off and that the ...

Page 27

PRODUCT SPECIFICATION nRF2401 Single Chip 2.4 GHz Radio Transceiver Configuration mode timing When one or more of the bits in the configuration word needs to be changed the following timing apply. PWR_UP CS CE CLK1 DATA Figure 15 Timing diagram ...

Page 28

PRODUCT SPECIFICATION nRF2401 Single Chip 2.4 GHz Radio Transceiver ShockBurst™ Mode timing ShockBurst™ TX PWR_UP CS CE CLK1 DATA ANT1/ANT2 Td Figure 16 Timing of ShockBurst™ The package length and the data rate give the ...

Page 29

PRODUCT SPECIFICATION nRF2401 Single Chip 2.4 GHz Radio Transceiver ShockBurst™ RX PWR_UP CS CE DR1/2 CLK1/2 DATA/DOUT2 ANT1/ANT2 Td Tsby2rx CE DR1/2 CLK1/2 DATA/ DOUT2 Td Figure 17 Timing of ShockBurst™ The CE may be ...

Page 30

PRODUCT SPECIFICATION nRF2401 Single Chip 2.4 GHz Radio Transceiver Direct Mode Direct Mode TX PWR_UP CS CE CLK1 DATA ANT1/ANT2 Td Figure 18 Timing of direct mode direct mode the input data will be ...

Page 31

PRODUCT SPECIFICATION nRF2401 Single Chip 2.4 GHz Radio Transceiver Direct Mode RX PWR_UP CS CE CLK1/2 DATA/DOUT2 ANT1/ANT2 Td DATA/DOUT2 Figure 19 Timing of direct mode RX Tsby2rx describes the delay from the positive edge of CE ...

Page 32

PRODUCT SPECIFICATION nRF2401 Single Chip 2.4 GHz Radio Transceiver PERIPHERAL RF INFORMATION Antenna output The ANT1 & ANT2 output pins provide a balanced RF output to the antenna. The pins must have a DC path to VDD, either via a ...

Page 33

PRODUCT SPECIFICATION nRF2401 Single Chip 2.4 GHz Radio Transceiver Sharing crystal with micro controller. When using a micro controller to drive the crystal reference input XC1 of the nRF2401 transceiver some rules must be followed. Crystal parameters: When the micro ...

Page 34

PRODUCT SPECIFICATION nRF2401 Single Chip 2.4 GHz Radio Transceiver frequency. When clocking the nRF2401 externally, XC2 is not used and can be left as an open pin. Frequency Reference MCU In direct mode there is a requirement on the accuracy ...

Page 35

PRODUCT SPECIFICATION nRF2401 Single Chip 2.4 GHz Radio Transceiver APPLICATION EXAMPLE nRF2401 with single ended matching network VDD C6 C5 10nF 1nF PWR_UP DR2 DR2 3 CLK2 CLK2 xxx 4 DOUT2 DOUT2 ...

Page 36

PRODUCT SPECIFICATION nRF2401 Single Chip 2.4 GHz Radio Transceiver PCB layout example Figure 22 shows a PCB layout example for the application schematic in Figure 21. A double-sided FR-4 board of 1.6mm thickness is used. This PCB has a ground ...

Page 37

PRODUCT SPECIFICATION nRF2401 Single Chip 2.4 GHz Radio Transceiver DEFINITIONS Data sheet status Objective product specification This data sheet contains target specifications for product development. Preliminary product This data sheet contains preliminary data; supplementary data may be specification published from ...

Page 38

PRODUCT SPECIFICATION nRF2401 Single Chip 2.4 GHz Radio Transceiver YOUR NOTES Nordic Semiconductor ASA - Vestre Rosten 81, N-7075 Tiller, Norway - Revision: 1.1 Phone +4772898900 Page Fax +4772898989 June 2004 ...

Page 39

PRODUCT SPECIFICATION nRF2401 Single Chip 2.4 GHz Radio Transceiver Nordic Semiconductor ASA – World Wide Distributors For Your nearest dealer, please see http://www.nordicsemi.no Vestre Rosten 81, N-7075 Tiller, Norway Phone: + 00, Fax: + ...

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