nRF2401A Datasheet PDF - ETC


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nRF2401A
ETC

Part Number nRF2401A
Description Single chip 2.4 GHz Transceiver
Page 30 Pages

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PRODUCT SPECIFICATION
www.DataSheet4U.com
Single chip 2.4 GHz Transceiver nRF2401A
FEATURES
APPLICATIONS
True single chip GFSK transceiver in a small Wireless mouse, keyboard, joystick
24-pin package (QFN24 5x5mm)
Keyless entry
Data rate 0 to1Mbps
Wireless data communication
Only 2 external components
Alarm and security systems
Multi channel operation
Home automation
125 channels
Surveillance
Channel switching time <200µs.
Automotive
Support frequency hopping
Data slicer / clock recovery of data
Telemetry
Address and CRC computation
Intelligent sports equipment
DuoCeiver™ for simultaneous dual receiver Industrial sensors
topology
Toys
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
GENERAL DESCRIPTION
nRF2401A 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
Parameter
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
Value
1.9
0
1000
10.5
18
-40 to +85
-93
400
Table 1 nRF2401A quick reference data
Unit
V
dBm
kbps
mA
mA
°C
dBm
nA
Nordic Semiconductor ASA - Vestre Rosten 81, N-7075 Tiller, Norway - Phone +4772898900 - Fax +4772898989
Revision: 1.0
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December 2004



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PRODUCT SPECIFICATION
nRF2401A Single Chip 2.4 GHz Radio Transceiver
www.DataSheet4U.com
Type Number
NRF2401A
NRF2401AG
NRF2401A-EVKIT
Description
24 pin QFN 5x5
24 pin QFN 5x5, lead free (green)
Evaluation kit (2 test PCB, 2 configuration PCB, SW)
Table 2 nRF2401A ordering information
Version
A
A
1.0
BLOCK DIAGRAM
PWR_UP
CE
Data
Channel 2
DR2
DOUT2
CLK2
Data
Channel 1
3-wire
interface
DR1
DATA
CLK1
CS
DuoCeiverTM
ShockBurstTM
DEMOD
Clock
Recovery,
DataSlicer
ADDR
Decode
CRC
Code/Decode
FIFO
In/Out
GFSK
Filter
XC1
XC2
VSS_PA=0V
VDD_PA=1.8V
LNA
Frequency
Synthesiser
PA
ANT1
400
ANT2
IREF
22k
Figure 1 nRF2401A with external components.
Nordic Semiconductor ASA - Vestre Rosten 81, N-7075 Tiller, Norway - Phone +4772898900 - Fax +4772898989
Revision: 1.0
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December 2004



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PRODUCT SPECIFICATION
nRF2401A Single Chip 2.4 GHz Radio Transceiver
PIN FUNCTIONS
www.DataSheet4U.com
Pin Name
1 CE
2 DR2
3 CLK2
4 DOUT2
5 CS
6 DR1
7 CLK1
8 DATA
9 DVDD
10 VSS
11 XC2
12 XC1
13 VDD_PA
14 ANT1
15 ANT2
16 VSS_PA
17 VDD
18 VSS
19 IREF
20 VSS
21 VDD
22 VSS
23 PWR_UP
24 VDD
Pin function
Digital Input
Digital Output
Digital I/O
Digital Output
Digital Input
Digital Output
Digital I/O
Digital I/O
Power Output
Power
Analog Output
Analog Input
Power Output
RF
RF
Power
Power
Power
Analog Input
Power
Power
Power
Digital Input
Power
Description
Chip Enable Activates RX or TX mode
RX Data Ready at Data Channel 2 (ShockBurst™ only)
Clock Output/Input for RX Data Channel 2
RX Data Channel 2
Chip Select Activates Configuration Mode
RX Data Ready at Data Channel 1 (ShockBurst™ only)
Clock Input (TX) & Output/Input (RX) for Data Channel 1
3-wire interface
RX Data Channel 1/TX Data Input/ 3-wire interface
Positive Digital Supply output for de-coupling purposes
Ground (0V)
Crystal Pin 2
Crystal Pin 1
Power Supply (+1.8V) to Power Amplifier
Antenna interface 1
Antenna interface 2
Ground (0V)
Power Supply (+3V DC)
Ground (0V)
Reference current
Ground (0V)
Power Supply (+3V DC)
Ground (0V)
Power Up
Power Supply (+3V DC)
Table 3 nRF2401A pin function
PIN ASSIGNMENT
VDD PWR_UP VSS VDD VSS IREF
24 23 22 21 20 19
CE 1
DR2 2
CLK2 3
nRF2401A
QFN24 5x5
18 VSS
17 VDD
16 VSS_PA
4 15 ANT2
CS 5
14 ANT1
DR1 6
13 VDD_PA
7 8 9 10 11 12
CLK1 DATA DVDD VSS XC2 XC1
Figure 2 nRF2401A pin assignment (top view) for a QFN24 5x5 package.
Nordic Semiconductor ASA - Vestre Rosten 81, N-7075 Tiller, Norway - Phone +4772898900 - Fax +4772898989
Revision: 1.0
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December 2004



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PRODUCT SPECIFICATION
nRF2401A Single Chip 2.4 GHz Radio Transceiver
www.DataSheet4U.com
ELECTRICAL SPECIFICATIONS
Conditions: VDD = +3V, VSS = 0V, TA = - 40ºC to + 85ºC
Symbol Parameter (condition)
Notes Min.
Typ. Max. Units
VDD
TEMP
Operating conditions
Supply voltage
Operating Temperature
1.9 3.0 3.6
-40 +27 +85
Digital input pin
VIH HIGH level input voltage
VIL LOW level input voltage
VDD- 0.3
Vss
VDD
0.3
Digital output pin
VOH HIGH level output voltage (IOH=-0.5mA)
VOL LOW level output voltage (IOL=0.5mA)
VDD- 0.3
Vss
VDD
0.3
fOP
fXTAL
f
RGFSK
RGFSK
FCHANNEL
General RF conditions
Operating frequency
Crystal frequency
Frequency deviation
Data rate ShockBurst™
Data rate Direct Mode
Channel spacing
1) 2400
2524
2) 4
20
±156
>0 1000
3) 250
1000
1
Transmitter operation
PRF Maximum Output Power
4) 0 +4
PRFC RF Power Control Range
16 20
PRFCR RF Power Control Range Resolution
±3
PBW 20dB Bandwidth for Modulated Carrier
PRF2 2nd Adjacent Channel Transmit Power 2MHz
PRF3 3rd Adjacent Channel Transmit Power 3MHz
1000
-20
-40
IVDD Supply current @ 0dBm output power
5)
13
IVDD Supply current @ -20dBm output power
5)
8.8
IVDD Average Supply current @ -5dBm output
6)
0.8
power, ShockBurst™
IVDD Average Supply current in stand-by mode
IVDD Average Supply current in power down
7)
12
400
Receiver operation
IVDD Supply current one channel 250kbps
18
IVDD Supply current one channel 1000kbps
19
IVDD Supply current two channels 250kbps
23
IVDD Supply current two channels 1000kbps
25
RXSENS Sensitivity at 0.1%BER (@250kbps)
-93
RXSENS Sensitivity at 0.1%BER (@1000kbps)
-85
C/ICO
C/I1ST
C/I2ND
C/I3RD
C/I Co-channel
1st Adjacent Channel Selectivity C/I 1MHz
2nd Adjacent Channel Selectivity C/I 2MHz
3rd Adjacent Channel Selectivity C/I 3MHz
8)
8)
8)
8)
10/4
-20/0
-37/-20
-43/-30
RXB Blocking Data Channel 2
-45/-41
1) Usable band is determined by local regulations
2) The crystal frequency may be chosen from 5 different values (4, 8, 12, 16, and 20MHz) which are specified in the
configuration word, see Table 8. 16MHz are required for 1Mbps operation.
3) Data rate must be either 250kbps or 1000kbps.
4) Antenna load impedance = 100+j175
5) Antenna load impedance = 100+j175. Effective data rate 250kbps or 1Mbps.
6) Antenna load impedance = 100+j175. Effective data rate 10kbps.
7) Current if 4 MHz crystal is used.
8) 250kbps/1000kbps.
Table 4 nRF2401A RF specifications
V
ºC
V
V
V
V
MHz
MHz
kHz
kbps
kbps
MHz
dBm
dB
dB
kHz
dBm
dBm
mA
mA
mA
µA
nA
mA
mA
mA
mA
dBm
dBm
dB
dB
dB
dB
dB
Nordic Semiconductor ASA - Vestre Rosten 81, N-7075 Tiller, Norway - Phone +4772898900 - Fax +4772898989
Revision: 1.0
Page 4 of 38
December 2004




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