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A2500R24x – Users Manual 

 

 

Release Date 01/10/11 

 

 

1.3. Features 

Features: 

  Frequency range: 2400 – 2483.5 MHz 

  Ultra small package size 9mm x 12mm 

x 2mm  

  Impedance controlled multi-layer PCB 

 Shielded 

Package 

  1.8 to 3.3 V operation 

 SPI 

Interface 

 ROHS 

Compliant 

 LGA 

Footprint 

 Low 

Power 

Consumption 

  Regulatory approvals for FCC, IC, 

ETSI 

  Digital RSSI output 

  Programmable channel filter bandwidth 

  Programmable output power up to +1 

dBm 

  High sensitivity (–104 dBm at 2.4 

kBaud, 1% packet error rate) 

  Low current consumption (13.3 mA in 

RX, 250 kBaud, input well above 
sensitivity limit) 

  Separate 64-byte RX and TX data 

FIFOs 

  Fast startup time: 250us from SLEEP 

to Rx or Tx mode 

  Data Rate: 1.2 – 500 Kbit/Sec 

  Programmable data rate from 1.2 to 

500 kBaud 

 Sleep 

state: 

0.4mA 

  Idle State: 1.5mA 

Benefits Summary: 

  Operating temperature -40 to +85C 

  100% RF Tested in production 

  Common footprint for all family 

members 

  No RF engineering experience 

necessary 

  Only requires a 2 layer PCB 

implementation 

  Excellent receiver selectivity and 

blocking Performance 

  Suitable for frequency hopping and 

multichannel systems due to a fast 
settling frequency synthesizer with 90 
us settling time 

  Suited for systems compliant with EN 

300 328 and EN 300 440 class 2 
(Europe), FCC CFR47 Part 15.247b 
and 15.249 (US) 

  No regulatory “Intentional radiator” 

testing required to integrate module 
into end product. Simple certification 
labeling replaces testing. 

 

1.4. 

Theory of Operation 

The A2500R24C and A2500R24A are for low power wireless applications in the 2400MHz to 
2483.5MHz global ISM/SRD band. The devices can be used to implement a variety of networks, 
including; point to point, point to multipoint, peer to peer and mesh networks 

The A2500R24C and A2500R24A both interface to an application microcontroller via an SPI 
bus. Physical and MAC layer functionality are accessed via the SPI bus, through addressable 
registers as well as execution commands. Data received or to be transmitted are also accessed 
through the SPI bus and are implemented as a FIFO register (64 bytes each for Tx and Rx).  

Summary of Contents for A2500R24 Series

Page 1: ...Anaren Integrated Radio A2500R24x Users Manual Release Date 01 10 11...

Page 2: ...THIS PAGE LEFT INTENTIONALLY BLANK...

Page 3: ...1 2 End User Manual 13 2 1 3 RF Exposure 13 2 2 Canada Industry Canada IC 14 2 3 Europe Conformit Europ enne 15 2 4 Potential Interference Sources 16 2 4 1 WLAN 16 2 4 2 Bluetooth 16 2 4 3 Microwave o...

Page 4: ...THIS PAGE LEFT INTENTIONALLY BLANK...

Page 5: ...testing for an intentional radiator Section 2 has information on the requirements for the end user integrator must fulfill to use the modules without intentional radiator regulatory testing The A2500R...

Page 6: ...ecessary Only requires a 2 layer PCB implementation Excellent receiver selectivity and blocking Performance Suitable for frequency hopping and multichannel systems due to a fast settling frequency syn...

Page 7: ...ttern is desired such that all nodes have a fair chance of communicating The A2500R24A module has an integral antenna that is near omni directional whereas the A2500R24C has approved antenna options r...

Page 8: ...Page 8 of 26 A2500R24x Users Manual Release Date 01 10 11 Figure 1 The functionality of the A2500R24A using an integral antenna Figure 2 The functionality of the A2500R24C using an external antenna...

Page 9: ...thesizer needs to be started FS_Wakeup and having been powered off or idle for a while the control loop of the VCO PLL needs to be calibrated calibrate A data frame is loaded into the transmit FIFO an...

Page 10: ...Page 10 of 26 A2500R24x Users Manual Release Date 01 10 11 Medium access Figure 4 Transceiver state diagram...

Page 11: ...483 5 MHz ISM SRD bands Wireless alarm and security systems Industrial monitoring and control Wireless sensor networks AMR Automatic Meter Reading Home and building automation Wireless game controller...

Page 12: ...rovals 15 19a3 The modules comply with part 15 of the FCC rules Operation is subject to the following two conditions 1 this device may not cause harmful interference and 2 this device must accept any...

Page 13: ...e to radio or television reception which can be determined by turning the equipment off and on the user is encouraged to try to correct the interference by one or more of the following measures Reorie...

Page 14: ...meet the following conditions a The host device as a stand alone unit without any separately certified modules complies with all applicable Radio Standards Specifications b The host device and all th...

Page 15: ...ndard ETSI EN 300 328 V1 7 1 2006 10 Maximum Transmit Power Maximum EIRP Spectral Density Frequency Range Radiated Emissions Test standards ETSI EN 301 489 1 2008 and ETSI EN 301 489 17 2008 Radiated...

Page 16: ...ed Predominantly channels 1 6 and 11 are used to achieve non overlapping channels The user is therefore encouraged to select a channel scheme that also has channels falling in between or entirely outs...

Page 17: ...quency band and maintain a list of best available channels 2 5 Approved Usage The radio modules can be used in a variety of physical layer configurations the following restricts the use to maintain co...

Page 18: ...nel Rx Filter Link Budget kb s MHz MHz dBm kHz KHz dB 420 0 2401 8 2480 3 1 0 307 861 812 500 500 0 2401 8 2480 3 1 0 307 861 812 500 MSK Modulation Requirement Suggested In a frequency agile implemen...

Page 19: ...Min Max Unit Condition Note Supply Voltage Vdd 0 3 3 9 V Voltage on any digital pin 0 3 Vdd 0 3 max 3 9 V RF input power 10 dBm Storage Temperature 50 150 C Solder reflow temperature 260 C According...

Page 20: ...or adaptive antenna tuning is desired Below the common footprint are shown Pin Pin Name Pin Type Description 1 DNC NC Do Not Connect Internal GND connection used during testing not recommended to conn...

Page 21: ...O General purpose port 15 Vdcoup2 Analog Optional decoupling of the modules internal Vdd supply It is recommended to not connect anything to this pin In particular noisy environment this pin can be us...

Page 22: ...elease Date 01 10 11 connect this pin to anything 24 DNC NC Do Not Connect Internal GND connection used during testing not recommended to connect to main GND Table 3 Pin Descriptions 3 4 Recommended L...

Page 23: ...Mounting the module along an edge Figure 9 Mounting the module along an edge with overhang This option is not generally recommended but is a method to save PCB in an environmentally benign environment...

Page 24: ...ing regulators motor controls etc it may be necessary to add additional noise reduction means Pin 7 Vdcoup1 is connected to the modules internal supply line after the ferrite bead and decoupling capac...

Page 25: ...elease Date 01 10 11 HISTORY Date Author Change Note No Notes 05 31 10 Richardson Initial Draft 07 15 10 Richardson Initial Release 12 17 10 Richardson Formatting applied no content change 01 10 11 Ri...

Page 26: ...R product line Worldwide North America Worldwide Anaren Microwave Inc 6635 Kirkville Road East Syracuse NY 13057 Tel 1 315 432 8909 1 800 411 6596 Fax 1 315 432 8970 Anaren Microwave Europe Inc 12 Som...

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