Microchip Technology MRF24J40MB Datasheet

2.4 ghz ieee std. 802.15.4 20 dbm rf transceiver module

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MRF24J40MB

Data Sheet

2.4 GHz IEEE Std. 802.15.4™

20 dBm RF Transceiver Module

Preliminary

DS70599B

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Page 1 MRF24J40MB Data Sheet 2.4 GHz IEEE Std. 802.15.4™ 20 dBm RF Transceiver Module Preliminary © 2009 Microchip Technology Inc. DS70599B...
Page 2 Select Mode, Total Endurance, TSHARC, WiperLock and ZENA are trademarks of Microchip Technology Incorporated in the U.S.A. and other countries. SQTP is a service mark of Microchip Technology Incorporated in the U.S.A. All other trademarks mentioned herein are property of their respective companies.
Page 3 • Supports Encryption and Decryption for MAC - RX mode: 25 mA (typical) Sublayer and Upper Layer - TX mode: 130 mA (typical) - Sleep: 5 μA (typical) FIGURE 1: PIN DIAGRAM RESET 11 GND WAKE Preliminary © 2009 Microchip Technology Inc. DS70599B-page 1...
Page 4: Table Of Contents
When contacting a sales office, please specify which device, revision of silicon and data sheet (include literature number) you are using. Customer Notification System Register on our web site at www.microchip.com to receive the most current information on all of our products. Preliminary © 2009 Microchip Technology Inc. DS70599B-page 2...
Page 5: Device Overview
DEVICE OVERVIEW Interface Description Figure 1-1 shows a simplified block diagram of the The MRF24J40MB is a 2.4 GHz IEEE Std. 802.15.4™ MRF24J40MB module. The module is based on the compliant, surface mount module with integrated Microchip Technology MRF24J40 IEEE 802.15.4™...
Page 6 No connection Power Power supply Ground Ground Ground Ground Legend: Pin type abbreviation: D = Digital, I = Input, O = Output FIGURE 1-2: MICROCONTROLLER TO MRF24J40MB INTERFACE ® MRF24J40MB INTx WAKE RESET Preliminary © 2009 Microchip Technology Inc. DS70599B-page 4...
Page 7 1.2", be kept clear of metal objects. A host PCB ground plane around the MRF24J40MB acts as a counterpoise to the PCB antenna. It is recommended to extend the ground plane at least 0.4" around the module.
Page 8 0.315” 0.4” 0.4” PCB Ground Plane (Counterpoise) 0.4” Underneath and extend as far as possible to the sides and below the module (at least 0.4 inches on each side) for best performance Preliminary © 2009 Microchip Technology Inc. DS70599B-page 6...
Page 9: Circuit Description
CIRCUIT DESCRIPTION Schematic A schematic diagram of the module is shown in The MRF24J40MB is a complete 2.4 GHz IEEE Figure 2-1 and the Bill of Materials (BOM) is shown in Std. 802.15.4™ compliant surface mount module with Table 2-1.
Page 11 MRF24J40MB TABLE 2-1: MRF24J40MB BILL OF MATERIALS Designator Description Manufacturer Part Number Chip Capacitor 0402 COG 0.5P Johanson Technology 500R07S0R5AV4T Chip Capacitor 0402 COG 0.5P Johanson Technology 500R07S0R5AV4T Chip Capacitor 0402 COG 1.0P Johanson Technology 500R07S1R0BV4T Chip Capacitor 0402 COG 1.5P...
Page 12 MRF24J40MB TABLE 2-1: MRF24J40MB BILL OF MATERIALS (CONTINUED) Designator Description Manufacturer Part Number Chip Capacitor 0402 X5R 100N Murata GRM155R61A104KA01D Chip Capacitor 0402 COG 47P Murata GRM1555C1H470JZ01D Chip Capacitor 0603 X5R 2.2U Murata GRM188R60J225ME01D 802.15.4 Radio Microchip MRF24J40-I/ML Switch SPDT...
Page 13 MRF24J40MB Printed Circuit Board The MRF24J40MB module printed circuit board is con- structed with material, four layers 0.032 inches thick. The layers are shown in Figure 2-2 through Figure 2-6. The stack up of the PCB is shown in Figure 2-7.
Page 14 1/2 oz. Copper Top Copper 8 mil FR4 1/2 oz. Copper Ground Plane 0.032‚ 12 mil FR4 +/- 0.005‚ 1/2 oz. Copper Power Plane 8 mil FR4 1/2 oz. Copper Bottom Copper Preliminary © 2009 Microchip Technology Inc. DS70599B-page 12...
Page 15 Ansoft Designer and HFSS™ 3D full-wave solver software by Ansoft Corporation FIGURE 2-8: PCB ANTENNA DIMENSIONS 22.0 3.82 1.54 0.85 0.72 Note 1: Dimensions are in mm and tolerance is +/– 0.05 mm. Preliminary © 2009 Microchip Technology Inc. DS70599B-page 13...
Page 16 MRF24J40MB FIGURE 2-9: PCB ANTENNA SIMULATION DRAWING FIGURE 2-10: SIMULATED 2D RADIATION PATTERN Preliminary © 2009 Microchip Technology Inc. DS70599B-page 14...
Page 17 MRF24J40MB FIGURE 2-11: SIMULATED 3D RADIATION PATTERN FIGURE 2-12: SIMULATED PCB ANTENNA IMPEDANCE Preliminary © 2009 Microchip Technology Inc. DS70599B-page 15...
Page 18 MRF24J40MB FIGURE 2-13: SIMULATED PCB ANTENNA SWR Preliminary © 2009 Microchip Technology Inc. DS70599B-page 16...
Page 19: Regulatory Approval
Canada and European countries. Modular approval with the limits for a Class B digital device, pursuant to allows the end user to place the MRF24J40MB module part 15 of the FCC Rules. These limits are designed to inside a finished product and not require regulatory...
Page 20 Industry Canada. Label: If the MRF24J40MB module is used in a portable Contains IC: 7693A-24J40MB application (antenna is less than 20 cm from persons during operation), the integrator is responsible for From Section 7.1.6, RSS-Gen, Issue 2, June 2007,...
Page 21 Europe 3.3.1 MRF24J40MB SETTINGS To meet ETSI requirements, the following settings must The MRF24J40MB module has been certified for use in be observed by the integrator: European countries. The following testing has been completed: • The MRF24J40MB transmit power setting (RFCON3 0x203) cannot exceed -14.9 dB.
Page 23: Electrical Characteristics
Input Return Loss — Noise Figure — — (including matching) Adjacent Channel @ +/-5 MHz — — Rejection Alternate Channel @ +/-10 MHz — — Rejection RSSI Range — — RSSI Error — Preliminary © 2009 Microchip Technology Inc. DS70599B-page 21...
Page 24 Programmed by Register — 1.25 — Resolution Carrier Suppression — — TX Spectrum Mask for Offset Frequency > 3.5 MHz, — — O-QPSK Signal at 0 dBm Output Power TX EVM — — Preliminary © 2009 Microchip Technology Inc. DS70599B-page 22...
Page 25: Appendix A: Revision History
MRF24J40MB APPENDIX A: REVISION HISTORY Revision A (June 2009) Original release of this document. Revision B (July 2009) Added Section 3.0 “Regulatory Approval”. Preliminary © 2009 Microchip Technology Inc. DS70599B-page 23...
Page 27: Index
Layer 2 – Ground Plane..........11 Bill of Materials (BOM) ............9 Layer 3 – Power Plane ..........12 Block Diagrams Stack Up ..............12 Microcontroller to MRF24J40MB Interface....4 Top Copper ..............11 MRF24J40MB ............... 3 Top Silk Screen ............11 Pin Description..............4 Pin Diagram ................
Page 29: The Microchip Web Site
To register, access the Microchip web site at www.microchip.com, click on Customer Change Notification and follow the registration instructions. Preliminary © 2009 Microchip Technology Inc. DS70599B-page 27...
Page 30: Reader Response
5. What deletions from the document could be made without affecting the overall usefulness? 6. Is there any incorrect or misleading information (what and where)? 7. How would you improve this document? Preliminary © 2009 Microchip Technology Inc. DS70599B-page 28...
Page 31: Product Identification System
To order or obtain information, e.g., on pricing or delivery, refer to the factory or the listed sales office PART NO. Examples: Device Module Module Tape and Temperature MRF24J40MB-I = Industrial temp. tray Type Reel Range MRF24J40MBT-I = Industrial temp., tape and reel. Device MRF24J40MB;...
Page 32 Thailand - Bangkok Santa Clara, CA Tel: 86-29-8833-7252 Tel: 66-2-694-1351 Tel: 408-961-6444 Fax: 86-29-8833-7256 Fax: 66-2-694-1350 Fax: 408-961-6445 China - Zhuhai Toronto Tel: 86-756-3210040 Mississauga, Ontario, Fax: 86-756-3210049 Canada Tel: 905-673-0699 Fax: 905-673-6509 03/26/09 Preliminary © 2009 Microchip Technology Inc. DS70599B-page 30...

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