ApplicationsRF BOM vs. Application Requirements
Introduction
Components around RF transceivers can be classified into four families:•RF filtering of out-of-band high-level jamming such as pagers' Base Stations,portable phones. These are the most expensive parts (e.g. SAW).
•
IF filtering to protect against other users of the ISM bands. The 10.7 MHz onesare very cheap, while the 455 kHz are rather expensive but the only solution toachieve (very) narrow channels.
•Filtering and decoupling of power supplies. These are always very cheap(resistors, capacitors).
•
RF components such as antenna matching, loop filter, etc.
Thanks to the AT86RF211’s very high level of integration (incl. inductor, varactor), nocritical RF components have to be added outside of the chip with the exception ofsome low-cost R, L, C passives for antenna matching and loop filter. Printed inductorsfit very well.
As far as other components are concerned, such a super-heterodyne device is veryflexible and allows you to achieve a low cost BOM for standard applications, as wellas high performances (immunity, selectivity, etc.) for industrial systems: external filterscan be removed/chosen according to performance requirements. There is a wide vari-ety of filters, with various bandwidths and costs (simpler filters with discretecomponents are also possible) to meet any requirement. The same PCB layout canbe used for several applications (unique RF platform). This allows you to adapt theperformance to new requirements with minimal design efforts resulting in a very shorttime-to-market.
SmartRFSeriesApplication NoteRev. 5305A–WIRE–05/031
Possible
Configurations
This table sums up possible configurations of the RF chip in relation to performances required.
Table 1. Possible Configurations
Configuration
Name
Conducted Typ. Sensitivity BW [dBm][kHz]
-90-93(6)-90-93(6)-103-106(6)
High sensitivity medium towide channels
-100-103(6)-99-102(6)-103
150(9)150(9)150(9)
Immunity Without Shielding(1)
3 V/m3 V/m3 V/m
Typical 900 MHz Open Field Range(5)
Boards Available for a Quick Design Start
Features
IF1 filter – Printed antenna and inductorsIF1 filter – Wire antenna printed inductorsIF1 filter – Wire antenna printed inductors – LNA
300 to > 400m (Home) area
IF1 filter – Wire antenna printed inductors – LNA –RF ceramic filterIF1 filter – Printed
antenna and inductors – LNA – RF SAW filterIF1 and IF2 filter – Wire antenna
IF1 and IF2 filter – Wire antenna – RF ceramic filter
IF1 and IF2 filter – Wire antenna – RF SAW filterIF1 and IF2 filter – Wire antenna – LNA
IF1 and IF2 filter – Wire
600 to > 1000m
antenna – LNA – RF
(more than home)
ceramic filter
area
IF1 and IF2 filter – Wire antenna – LNA – RF SAW filter
AT86RF211-DB433107(4)AT86RF211-DB868107(4)AT86RF211-DB915107(4)
433 MHz868 MHz915 MHz(up to 19.2 kbps)
AT86RF211DB-868LNA(3)AT86RF211DB-915LNA(3)
868 MHz915 MHz(up to kbps)
Part NumbersAT86RF211DB-BIBAND(2)
Designed for the
Band(s)868 and 915 MHz (up to kbps)
Standard BOM
0.5 $ cost in volume50 to > 200m (Room) area
150(9)
> 5 V/m
150
(9)
> 5 V/m
35(8)
3 V/m
High sensitivityHigh selectivity(Narrow band)
-10035
(8)
> 5 V/m
300 to > 400m (Home) area
-99
35(8)
> 5 V/m
-113(7)
Very high sensitivityHigh selectivity(Narrow band)
35(8)
3 V/m
-110
(7)
35
(8)
> 5 V/m
-109(7)35(8)
> 5 V/m
Notes:
1.The intrinsic immunity of the RF211 (high level of integration, architecture, etc.) makes it capable of meeting immunity
requirements (3 V/m) with no SAW filter and no shielding. 3 V/m corresponds to European standards.2.See “AT86RF211-BIBAND: Standard Dual-band Board with Printed Antenna and Inductors” on page 3.
3.See “AT86RF211DB-xxxLNA: High Sensitivity/Medium to Wide Channels Board with Printed Antenna and Inductors” on
page 7.
4.See “AT86RF211-DBxxx107: High Sensitivity/High Selectivity Board (Narrow Band)” on page 11.
5.A range (even measured in open field) is always difficult to guarantee since it depends on many parameters: sofware used,
choice of criteria to say the link is OK (e.g. Bit Error Rate), nature of the measurement field (ground, obstacles, antennas),shape of the product, etc... 3-400m are generally required for applications within a home. Values given are typical for 868 or915 MHz bands. In the 400-450 MHz one, the range is more than twice the given value.6.Using SMD inductors instead of printed ones. Also leads to +3 dB power.
7.Values given with a very low-cost discrete LNA. -120 dBm is achievable with integrated LNAs.8.IF2 filters BW from 10 to 35 kHz are available.9.IF1 filters BW from 110 to 300 kHz are available.
2
SmartRF AT86RF211 App Note
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SmartRF AT86RF211 App Note
Boards Available for a Quick Design Start
The following are the descriptions of the boards listed in Table 1 on page 2.
AT86RF211-BIBAND: Standard Dual-band Board with Printed Antenna and Inductors
Description
•••
One piece of hardware for 868/915 MHz applications.
Adjustable antenna (C43 is NOT mounted for 915 MHz applications).
EIRP = +6 dBm must be reduced by software to meet standards at 915 MHz (TXLVL = 010 in CTRL1) if no frequency hopping is implemented (FCC requirement).ETSI EN300-220 in 868 MHz configuration.
EN 301 4 for EMC requirements, tested on the AT86RF211 Dev Kit.FCC Part 15 in 915 MHz configuration.
Compliance to Standards
•••
Figure 1. AT86RF211-BIBAND Board
Available
Documentation
••
“Schematics of the Board and Layout” on page 4.
“Bill of Material” on page 6 which includes component manufacturers and full part numbers.
Information Notes1.The part numbers given are indicative; they may change without notice.2.Gerber files for this design are available, please ask your local Atmel FAE.3.A wired antenna can be easily mounted to increase the range.
4.All components out of the area delimited by the blank line are not related to the RF
part.
3
5305A–WIRE–05/03
Schematics of the Board and Layout
Figure 2. AT86RF211-BIBAND Component Placement
Figure 3. AT86RF211-BIBAND Top Layout and Ground
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SmartRF AT86RF211 App Note
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SmartRF AT86RF211 App Note
Figure 4. AT86RF211-BIBAND Electrical Schematic
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Bill of Material
Table 2. Standard 868/915 MHz
QtyDescription16172118111161112141332
Resistor 1/10W 0603 0Resistor 1/10W 5% 0603 10Resistor 1/10W 5% 0603 33Resistor 1/10W 5% 0603 1kResistor 1/10W 5% 0603 3.3kResistor 1/10W 5% 0603 18kResistor 1/10W 5% 0603 22kResistor 1/10W 5% 0603 100k
Ceramic Capacitor 0603 ±0.25p 1 pF NPO
NameR35
R3, R4, R5, R7, R9, R12R2
R28, R29, R30, R31, R32, R33, R34R10, R16R1R8
PackageSMD 0603SMD 0603SMD 0603SMD 0603SMD 0603SMD 0603SMD 0603
Manufacturer
R6, R17, R21, R22, R23, R24, R25, R26SMD 0603C5
SMD 0603SMD 0603SMD 0603SMD 0603SMD 0603SMD 0603SMD 0603SMD 0603SMD 0603SMD 0603SMD 0603SMD 0603SMD 0603SMD 0603SMD 0603
Ceramic Capacitor 0603 ±0.25p 2.2 pF NPOC1Ceramic Capacitor 0603 ±0.25p 2.7 pF NPOC4Ceramic Capacitor 0603 ±0.5p 6.8 pF NPOCeramic Capacitor 0603 5% 27 pF NPOCeramic Capacitor 0603 5% 47 pF NPOCeramic Capacitor 0603 5% 56 pF NPOCeramic Capacitor 0603 5% 82 pF NPOCeramic Capacitor 0603 5% 100 pF NPOCeramic Capacitor 0603 5% 470 pF NPOCeramic Capacitor 0603 10% 1 nF X7RCeramic Capacitor 0603 10% 2.2 nF X7RCeramic Capacitor 0603 10% 4.7 nF X7RCeramic Capacitor 0603 10% 10 nF X7RCeramic Capacitor 0603 10% 100 nF X7R
C3
C22, C27, C28, C29, C41, C43(1)C13C38C37C7, C17C24
C10, C18, C20, C36C15
C12, C19, C26C9, C16, C21C11, C14
J1 (10 pts), J3 (3 pts), J4 (3 pts)C23YR1U1
16“Tulipe” Connector Male-Male11119Note:
Trimmer Capacitor 4.5 to 20 pF pink(not used on final product)
Ceramic filter 10.7 MHz SFE10.7xxxx (150 kHz)
Transceiver Atmel AT86RF211
Lead ThroughLead ThroughSMD
MURATAMURATAAtmel AT86RF211
Crystal 10.245 MHz 50 ppm/cal 15 ppm/temp
Q1
[-10; +60°C] Cload = 20 pFNot Mounted
C2, C6, C8, C39, C40, C42, J2, L5, R15
HC49/U
Specif. XCOT001-1
Lead Through 2pts
1.For 915 MHz use: C43 is NOT mounted and TXLVL = 010 in CTRL1 register (in order not to exceed the max power
allowed).
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SmartRF AT86RF211 App Note
AT86RF211DB-xxxLNA: High Sensitivity/Medium to Wide Channels Board with Printed Antenna and Inductors
Description
•••
One piece of hardware for 868/915 MHz applications (except the SAW filter).Adjustable antenna (C43 is NOT mounted for 915 MHz applications).
EIRP = +6 dBm must be reduced by software to meet standards at 915 MHz (TXLVL = 010 in CTRL1) if no frequency hopping is implemented (FCC requirement).Compliance to •ETSI EN300-220 in 868 MHz configuration
Standards
•EN 301 4 for EMC requirement, tested on AT86RF211 Dev Kit•
FCC Part 15 in 915 MHz configuration
Figure 5. AT86RF211DB-xxxLNA Board
Available
•“Schematics of the Board and Layout” on page 8.
Documentation
•
“Bill of Material” on page 10 which includes component manufacturers and full part numbers.
Information Notes1.The part numbers given are indicative; they may change without notice.2.Gerber files for this design are available, please ask your local Atmel FAE.3.A wired antenna can be easily mounted to increase the range.
5305A–WIRE–05/03
7
Schematics of the Board and Layout
Figure 6. AT86RF211DB-xxxLNA Component Placement
Figure 7. AT86RF211DB-xxxLNA Top Layout and Ground
8
SmartRF AT86RF211 App Note
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SmartRF AT86RF211 App Note
Figure 8. AT86RF211DB-xxxLNA Electrical Schematic
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9
Bill of Material
Table 3. Enhanced 868 MHz
QtyDescription1611921111
Resistor 1/10W 0603 0Resistor 1/10W 5% 0603 10Resistor 1/10W 5% 0603 33Resistor 1/10W 5% 0603 56Resistor 1/10W 5% 0603 1kResistor 1/10W 5% 0603 3.3kResistor 1/10W 5% 0603 10kResistor 1/10W 5% 0603 18kResistor 1/10W 5% 0603 22kResistor 1/10W 5% 0603 27k
NameR35
R3, R4, R5, R7, R9, R12R2R14
PackageSMD 0603SMD 0603SMD 0603SMD 0603
Manufacturer
R19, R27, R28, R29, R30, R31, R32,
SMD 0603
R33, R34R10, R16R18R1R8R11
SMD 0603SMD 0603SMD 0603SMD 0603SMD 0603
10Resistor 1/10W 5% 0603 100k11111911111413321
Ceramic Capacitor 0603 ±0.25p 1 pF NPOCeramic Capacitor 0603 ±0.25p 2.2 pF NPOCeramic Capacitor 0603 ±0.25p 2.7 pF NPOCeramic Capacitor 0603 ±0.5p 6.8 pF NPOCeramic Capacitor 0603 ±0.5p 15 pF NPOCeramic Capacitor 0603 5% 2 7pF NPOCeramic Capacitor 0603 5% 47 pF NPOCeramic Capacitor 0603 5% 56 pF NPOCeramic Capacitor 0603 5% 82 pF NPOCeramic Capacitor 0603 5% 100 pF NPOCeramic Capacitor 0603 5% 470 pF NPOCeramic Capacitor 0603 10% 1 nF X7RCeramic Capacitor 0603 10% 2.2 nF X7RCeramic Capacitor 0603 10% 4.7 nF X7RCeramic Capacitor 0603 10% 10 nF X7RCeramic Capacitor 0603 10% 100 nF X7RTransistor PNP BC856C-857C-858C-859C
R6, R13, R17, R20, R21, R22, R23,
SMD 0603
R24, R25, R26C5C1C4C3C25
SMD 0603SMD 0603SMD 0603SMD 0603SMD 0603
C22, C27, C28, C30, C31, C33, C34,
SMD 0603
C41, C43(1)C13C38C37C7, C17C24
C10, C18, C20, C36C15
C12, C19, C26C9, C16, C21C11, C14T2
J1 (10 pts), J3 (3 pts), J4 (3 pts)C23T1
Lead ThroughSOT-23
MURATAPHILIPS
SMD 0603SMD 0603SMD 0603SMD 0603SMD 0603SMD 0603SMD 0603SMD 0603SMD 0603SMD 0603SOT-23
16“Tulipe” Connector Male-Male11
Trimmer Capacitor 4.5-20 pF pink(not used on final product)Transistor NPN 5 GHz BFR520
10
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SmartRF AT86RF211 App Note
Table 3. Enhanced 868 MHz (Continued)
QtyDescription1111
SAW filter 869 MHz SAFC869MF70T (50Ω)
Ceramic filter 10.7 MHz SFE10.7xxxxTransceiver Atmel AT86RF211
Crystal 10.245 MHz 50 ppm/cal 1ppm/temp [-10; +60°C] Cload = 20pF
NameYR2YR1U1Q1
C2, C6, C8, C29, C32, C35, C39, C40, C42, J2, L5, R15
PackageSMDLead ThroughSMD
ManufacturerMURATAMURATAAtmel AT86RF211
HC49/U
Specif. XCOT001-1
Lead Through 2pts
12Not MountedNote:
1.For 915 MHz use: C43 is NOT mounted, SAW filter 915 MHz SAFC915MA70N (50Ω) and TXLVL = 010 in CTRL1 register
(in order not to exceed the max power allowed).
AT86RF211-DBxxx107: High Sensitivity/High Selectivity Board (Narrow Band)
Description
•
One single PCB for 433, 868 or 915 MHz applications: only a few components
corresponding to antenna, SAW filter matching, as well as harmonics filtering are specific to the frequency band.
Antenna: a SMA antenna is mounted on each board for test purposes. The industrial solution is a simple wire plugged into hole A2. Its size must be adapted to the frequency: 17.3 cm for the 433 MHz version, 8.6 cm for the 868 MHz version and 8.2 cm for the 915MHz version.
•
Table 4. Measured Radiated Power of Modules with the SMA Antenna
Frequency Band
Measured EIRPRpower = 18 kΩTXLVL = 111
+13 dBm+10 dBm
Max. EIRPRpower = 10 kΩ
Recommendations
According to the ETSI300-220, the power must be clamped to +10 dBm ERP depending on the gain of the antenna used.Same remark.
According to FCC Part 15, radiated output power is limited to -1.25 dBm for a fixed
frequency system, and +30 dBm for a FHSS system.
433 MHz868 MHz
+15 dBm+12 dBm
915 MHz+7 dBm+11 dBm
General Note
The SMA connector and antenna provided are very friendly for quick measurements, radiatedor conducted, but are not allowed on a finished product (according to legislation, no removablepart is tolerated).•••
ETSI EN300-220 in 868 MHz configuration
EN 301 4 for EMC requirement, tested on AT86RF211 Dev KitFCC Part 15 in 915 MHz configuration
Compliance to Standards
11
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Figure 9. AT86RF211-DBxxx107 Board
Available in this Document
••
“Schematics of the Board and Layout” on page 12.
“Bill of Material” on page 14 which includes component manufacturers and full part numbers.
Information Notes1.The part numbers given are indicative; they may change without notice.2.Gerber files for this design are available, please ask your local Atmel FAE.
3.A wired antenna can be easily mounted to increase the range, as well as a SMA
antenna.
Schematics of the Board and Layout
Figure 10. AT86RF211-DBxxx107 Component Placement
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SmartRF AT86RF211 App Note
Figure 11. AT86RF211-DBxxx107 Top Layout and Ground
Figure 12. AT86RF211-DBxxx107 Electrical Schematics
SAWF1TQS-821A-7R33C482NCIN266C49817OUT6.8pFC22C36VDD5.6nF560pF817VDDR18C24L33K31nF47nHL4C43L7J2C27L656nHVDD1µH11µH21nFC5215pFC193C29R21HEADER 3100pF100nF100pFC41C4427KC20C5C30C6J31NC4.7nF1pF4.7nF100pF100nF238763210987444444444333HEADER 3TDCUN22N122CDNCIOGVXDCILTCNWXXRNCODCIGVCNCFVGGVFC1AR17SRREEVCCA10.7MHzJ41RPOWERIF1OUT3611323118K2232A2TXGND1IF1IN35HEADER 3A1C56C47L111L1C392.7pFL12318nHIF1DEC34C53J6SMA127nHRF2.7pF1.5nHFC24.7nF25.6pFC21C40455KHz18.2pF10pFC25NC42L2TXGND2IF2OUT3333211318nH2HEADER 3C335R30TXGND3DISCFILT32C17NC1nFIC122KJ7C346TXGND4DB433107IF2DEC31C23C181100pF2.2NF100pF23HEADER 3VDDL970RTXVCCIF2IN30VCC8VCCTXGND5IF2GND29C32L14100pFVDD1µHL1091µHDIVGNDIF2VCC28C14100nFVDDC57C26100nF10R311nFDIVCCDISCOUT27R2047KC580RC3168pF100pF11DATAMSGDSIN26DATAMSGC1612SLESKFILT25PKSLEAULC21111TE1210nFLLAKATTCDDCK2VDDDAASCNNCCLAASWDEVGGVSTEEOCCTTXXVDDL15345678C01234C59111111122222TP31µHC7100nF4.7nFR41C35C60100K NCTEST2VDD100nFTESTWAKEUPDATACLKSDATADATAMSGSLESCKOL2100pFXT182pF10.245MHzVDDC38R40R42L8CV1C423.3K100K NCJ1C151µH6.5a30pF15pF56pF10nF12345SCK67SCKWAKEUPTEST2OL210SDATADATACLKHEADER 10R10R12R11R14R15R16R19R22100K100K100K100K100K100K100K100KVDD5305A–WIRE–05/03
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Bill of Material
433 MHz Frequency BandTable 5. Board 433 MHz
QtyDescription12111181121111211181414126112111
Resistor 1/10W 5% ORResistor 1/10W 5% 3.3kResistor 1/10W 5% 18kResistor 1/10W 5% 22kResistor 1/10W 5% 27kResistor 1/10W 5% 47kResistor 1/10W 5% 100kResistor 1/10W 5% OR
Ceramic Capacitor ±0.25p 1 pF NPO
NameR31R18, R40R17R30R21R20
R10, R11, R12, R14, R15, R16, R19, R22L9C44
PackageSMD 0603SMD 0603SMD 0603SMD 0603SMD 0603SMD 0603SMD 0603SMD 0805SMD 0603SMD 0603SMD 0603SMD 0603SMD 0603SMD 0603SMD 0603SMD 0603SMD 0603SMD 0603SMD 0603SMD 0603SMD 0603SMD 0603SMD 0603SMD 0603SMD 0603SMD 0603SMDSMD 0603SMD 0603SMD 0603SMD 0603SMD 0603
MURATAEpcos SIMID06-CEpcos SIMID06-CEpcos SIMID06-CEpcos SIMID06-CEpcos SIMID06-CManufacturer
Ceramic Capacitor ±0.25p 2.7 pF NPOC39, C47Ceramic Capacitor ±0.25p 5.6 pF NPOC56Ceramic Capacitor ±0.25p 6.8 pF NPOC49Ceramic Capacitor ±0.25p 8.2 pF NPOC21Ceramic Capacitor ±0.25p 10 pF NPOCeramic Capacitor 5% 15 pF NPOCeramic Capacitor 5% 56 pF NPOCeramic Capacitor 5% 68 pF NPOCeramic Capacitor 5% 82 pF NPOCeramic Capacitor 5% 100 pF NPOCeramic Capacitor 10% 560 pF X7RCeramic Capacitor 10% 1 nF X7RCeramic Capacitor 10% 2.2 nF X7RCeramic Capacitor 10% 4.7 nF X7RCeramic Capacitor 10% 5.6 nF X7RCeramic Capacitor 10% 10 nF X7RCeramic Capacitor 10% 100 nF X7RTrimmer Cap. 6.5-30 pF(removed on final product)Self 5% 1.5nHSelf 5% 18 nHSelf 5% 27 nHSelf 5% 47 nHSelf 5% 56 nH
C40C42, C43C38C58C35
C18, C29, C30, C31, C32, C34, C52, C60C36
C17, C24, C26, C27C23
C5, C8, C20, C53C22C15, C16
C6, C7, C14, C19, C57, C59CV1L12L2, L11L1L3L4
14
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Table 5. Board 433 MHz (Continued)
QtyDescription61111
Self 10% 1.0 µHAT86RF211
Name
L6, L7, L8, L10, L14, L15IC1
PackageSMD 0805TQFP48SMDSMD
AtmelMURATAMURATAManufacturer
Ceramic filter 10.7 MHz SFECV10.7xxx
FC1
(150 kHz)
Ceramic filter 455 kHz CFUXC455Axxx
FC2
(±17.5 kHz)
Crystal 10.245 MHz 50ppm/cal ±15 ppm/drift [-10; +60°C]Cload = 16pFSAW filter 434 MHzNot Mounted
XT1
HC49US SMD
Toyocom TQS-821A-7R (150Ω)
16
SAWF1
R41, R42, C25, C33, C41, C48
SMD
15
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868 MHz Frequency BandTable 6. Board 868 MHz
QtyDescription121111811111211181514126111121611
Resistor 1/10W 5% ORResistor 1/10W 5% 3.3kResistor 1/10W 5% 18kResistor 1/10W 5% 22kResistor 1/10W 5% 27kResistor 1/10W 5% 47kResistor 1/10W 5% 100kResistor 1/10W 5% OR
Ceramic Capacitor ±0.25p 1.5 pF NPOCeramic Capacitor ±0.25p 2.2 pF NPOCeramic Capacitor ±0.25p 2.7 pF NPOCeramic Capacitor ±0.25p 10 pF NPOCeramic Capacitor 5% 15 pF NPOCeramic Capacitor 5% 56 pF NPOCeramic Capacitor 5% 68 pF NPOCeramic Capacitor 5% 82 pF NPOCeramic Capacitor 5% 100 pF NPOCeramic Capacitor 10% 560 pF X7RCeramic Capacitor 10% 1 nF X7RCeramic Capacitor 10% 2.2 nF X7RCeramic Capacitor 10% 4.7 nF X7RCeramic Capacitor 10% 5.6 nF X7RCeramic Capacitor 10% 10 nF X7RCeramic Capacitor 10% 100 nF X7RTrimmer Capacitor 6.5-30 pF(removed on final product)Self 5% 1.5 nHSelf 5% 3.3 nHSelf 5% 10 nHSelf 5% 12 nHSelf 5% 15 nHSelf 10% 1.0 µHAT86RF211
NameR31R18, R40R17R30R21R20
R10, R11, R12, R14, R15, R16, R19, R22L9C56C21C39C40C42, C43C38C58C35
C18, C29, C30, C31, C32, C33, C52, C60C36
C17, C24, C26, C27, C34C23
C5, C8, C20, C53C22C15, C16
C6, C7, C14, C19, C57, C59CV1L12L3L11L2, L4L1
L6, L7, L8, L10, L14, L15IC1
PackageSMD 0603SMD 0603SMD 0603SMD 0603SMD 0603SMD 0603SMD 0603SMD 0805SMD 0603SMD 0603SMD 0603SMD 0603SMD 0603SMD 0603SMD 0603SMD 0603SMD 0603SMD 0603SMD 0603SMD 0603SMD 0603SMD 0603SMD 0603SMD 0603SMDSMD 0603SMD 0603SMD 0603SMD 0603SMD 0603SMD 0805TQFP48SMD
AtmelMURATAMURATAEpcos SIMID06-CEpcos SIMID06-CEpcos SIMID06-CEpcos SIMID06-CEpcos SIMID06-CManufacturer
Ceramic filter 10.7 MHz SFECV10.7xxx FC1(150 kHz)
16
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SmartRF AT86RF211 App Note
Table 6. Board 868 MHz (Continued)
QtyDescription11
Name
PackageSMD
ManufacturerMURATA
Ceramic filter 455 kHz CFUXC455Axxx
FC2
(±17.5 kHz)
Crystal 10.245 MHz 50ppm/cal ±15 ppm/drift [-10; +60°C]Cload = 16pF
SAW filter 869 MHz SAFCH869MA (50Ω)Not Mounted
XT1
HC49US SMD
18
SAWF1
R41, R42, C25, C41, C44, C47, C48, C49
SMDMURATA
915 MHz Frenquency BandTable 7. Board 915 MHz
QtyDescription121111811211211181424126
Resistor 1/10W 5% ORResistor 1/10W 5% 3.3kResistor 1/10W 5% 18kResistor 1/10W 5% 22kResistor 1/10W 5% 27kResistor 1/10W 5% 47kResistor 1/10W 5% 100kResistor 1/10W 5% OR
Ceramic Capacitor ±0.25p 2.2 pF NPOCeramic Capacitor ±0.25p 2.7 pF NPOCeramic Capacitor ±0.25p 3.3 pF NPOCeramic Capacitor ±0.25p 8.2 pF NPOCeramic Capacitor 5% 15 pF NPOCeramic Capacitor 5% 56 pF NPOCeramic Capacitor 5% 68 pF NPOCeramic Capacitor 5% 82 pF NPOCeramic Capacitor 5% 100 pF NPOCeramic Capacitor 10% 560 pF X7RCeramic Capacitor 10% 1 nF X7RCeramic Capacitor 10% 2.2 nF X7RCeramic Capacitor 10% 4.7 nF X7RCeramic Capacitor 10% 5.6 nF X7RCeramic Capacitor 10% 10 nF X7RCeramic Capacitor 10% 100 nF X7R
NameR31R18, R40R17R30R21R20
R10, R11, R12, R14, R15, R16, R19, R22L9C21C39, C56C49C40C42, C43C38C58C35
C18, C29, C30, C31, C32, C33, C52, C60C36
C17, C24, C26, C27C23, C24C5, C8, C20, C53C22C15, C16
C6, C7, C14, C19, C57, C59
PackageSMD 0603SMD 0603SMD 0603SMD 0603SMD 0603SMD 0603SMD 0603SMD 0805SMD 0603SMD 0603SMD 0603SMD 0603SMD 0603SMD 0603SMD 0603SMD 0603SMD 0603SMD 0603SMD 0603SMD 0603SMD 0603SMD 0603SMD 0603SMD 0603
Manufacturer
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Table 7. Board 915 MHz (Continued)
QtyDescription111111161111
Trimmer Cap. 6.5-30 pF(removed on final product)Self 5% 1.5 nHSelf 5% 2.2 nHSelf 5% 8.2 nHSelf 5% 10 nHSelf 5% 12 nHSelf 5% 15 nHSelf 10% 1.0 HAT86RF211
NameCV1L12L3L11L2L1L4
L6, L7, L8, L10, L14, L15IC1
PackageSMDSMD 0603SMD 0603SMD 0603SMD 0603SMD 0603SMD 0603SMD 0805TQFP48SMDSMD
AtmelMURATAMURATAManufacturerMURATAEpcos SIMID06-CEpcos SIMID06-CEpcos SIMID06-CEpcos SIMID06-CEpcos SIMID06-CEpcos SIMID06-C
Ceramic filter 10.7 MHz SFECV10.7xxx
FC1
(150 kHz)
Ceramic filter 455 kHz CFUXC455Axxx
FC2
(±17.5 kHz)
Crystal 10.245 MHz 50 ppm/cal ±15 ppm/drift [-10,+60°C]Cload = 16pF
SAW filter 915 MHz SAFCH915MA (50Ω)Not Mounted
XT1
HC49US SMD
17
SAWF1
R41, R42, C25, C41, C44, C47, C48
SMDMURATA
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SmartRF AT86RF211 App Note
5305A–WIRE–05/03
SmartRF AT86RF211 App Note
Multi-sourcing
The AT86RF211 is a fully integrated component that does not require any external critical RFcomponent. As a consequence, it is possible to use several different sources for all of them.The components mounted on our development tools/reference designs are described in thedifferent BOMs. The aim of this annex is to give examples of other suppliers. Please note thatthere is NEVER any TRUE second source for any component! For instance, another inductorwill have a different quality factor. As a consequence, switching from one supplier to anothermay require a slight adaptation of the nominal values.
Inductors
•••••••
Murata LQN21A series: 0805 surface mount packageMurata LQP18MN series: 0603 surface mount packageMurata LQW1005A series: 0402 surface mount packageSusumu TFL0816 series: 0603 surface mount packageCoilcraft 0805CS series: 0805 surface mount packageCoilcraft 0603CS series: 0603 surface mount packageWürth WE-MK: 0603 surface mount packageGolledgeRaltronQuartzcomSiward
Frank & SchulteEtc.
T° drift, calibration, ageing: please refer to App Note “Understanding the Demodulation and Data Slicing Features – Implementing the DC Demodulation Capability”.ESR: be sure to get a crystal whose ESR < 100Ω.Drive Level ≥ 100 µW
Load capacitance: give the value given in the BOM. If another value is chosen, you will have to re-calculate the values of the external capacitors (refer to the datasheet for examples).
Crystals
••••••••••
The crystal manufacturer will ask you the following information:
10.7 MHz Filters
Cheap ceramic filters (from 110 kHz to more than 250 kHz) can be purchased from:•••••••
Toko PanasonicTokenEtc.MurataNDK
Crystal filters manufacturers in general
Narrow filters (typ 50 kHz) are also possible:
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455 kHz Filters
IF2 455 kHz filters are available from ±5 kHz to ±17.5 kHz 6 dB bandwidth. The data rate islimited to 20 kbits/s accordingly.
Note:
This filter can be removed for many applications (replaced by a > 1 nF capacitor), or made withdiscrete elements (please refer to the datasheet).
••••
AVXTokoSoshinTokem
SAW Filters
433 MHz SAW Filters
••••
Toyocom TQS-821-A7RMurata SAFCH434MAEpcos B3580Sawcom C21627
It is also possible to use a 50Ω filter:
Then the user has to modify the matching as follow:
47 nHSWOUT(pin 48)SAW50Ω8.2 pF56 nHRXIN(pin 45)6.8 pF868 MHz SAW Filters••
Murata SAFCH869MA (50Ω)Epcos B3568 (50Ω)
Murata SAFCH915MA (50Ω).Epcos B3588 (50Ω).
915 MHz SAW Filters••
Important Note: It is always possible to use a SAW filter with another impedance, but thisnecessitates changing the matching network. Please refer to the datasheet to find the relevantimpedances.
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SmartRF AT86RF211 App Note
5305A–WIRE–05/03
Atmel Corporation
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SmartRF@gfo.atmel.com
Disclaimer: Atmel Corporation makes no warranty for the use of its products, other than those expressly contained in the Company’s standardwarranty which is detailed in Atmel’s Terms and Conditions located on the Company’s web site. The Company assumes no responsibility for anyerrors which may appear in this document, reserves the right to change devices or specifications detailed herein at any time without notice, anddoes not make any commitment to update the information contained herein. No licenses to patents or other intellectual property of Atmel aregranted by the Company in connection with the sale of Atmel products, expressly or by implication. Atmel’s products are not authorized for useas critical components in life support devices or systems.
© Atmel Corporation 2003. All rights reserved. Atmel® is a registered trademark of Atmel Corporation.Other terms and product names may be the trademarks of others.
Printed on recycled paper.5305A–WIRE–05/03
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