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Electrical Characteristics
Electrical Connections
Characteristic Sym Notes Min Typ Max Units
Center Frequency fC426.4 MHz
1 dB Bandwidth BW119.5 MHz
Maximum Insertion Loss, 418.00 to 434.79 MHz ILMAX 1.8 2.8
dB
Amplitude Ripple, p-p, 418 to 434.79 MHz 1.0
Rejection Referenced to Insertion Loss at 433.00 MHz:
DC to 406 MHz 40 43
456 to 470 MHz 33 36
470 to 870 MHz 40 43
870 to 1300 MHz 37 40
1300 to 1735 MHz 29 32
1735 to 2000 MHz 24 27
Source Impedance ZS50 Ω
Balanced Load Impedance ZL150 Ω
Case Style SM3838-8 3.8 x 3.8 mm Nominal Footprint
Lid Symbolization (Y=year, WW=week, S=shift) dot=pin 1 indicator 891, YWWS
Standard Reel Quantity Reel Size 7 Inch 500 Pieces/Reel
Reel Size 13 Inch 3000 Pieces/Reel
Connection Terminals
Single-ended Port 6
Balanced Port 1, 3
Case Ground 4, 5, 7, 8
No Connection 2
• 418.00 to 434.79 MHz Filter
• Optimized for use with the TRC105 Transceiver
• Balanced 150 ohm IC Interfa ce
• Complies with Directive 2002/95/EC (RoHS)
Absolute Maximum Ratings
Rating Value Units
Input Power Level +15 dBm
DC V oltage ±5 V
Operating Temperature Range -40 to +85 °C
Storage Temperature Range in Tape and Reel -40 to +85 °C
426.4 MHz
SAW Filter
RF3608D
1. Unless noted oth erwis e, all spec ifications apply ov er the operating temperatur e range with filter soldered to the specified demons trat ion board with imped ance
match ing to 50 Ω and measured with 50 Ω network analyz er.
2. Unless noted otherwise, all frequenc y specifications are referenced to the nominal center frequen cy, fc .
3. Rejection is measured as attenuation below the minimum IL point in the passband. Rejec tion in final user application is dependent on PCB layout and e xt ernal
impedance matching des ign. See Application Note No. 42 for details.
4. The desi gn, manufact uring process , and specifications of this filter are subject to change.
5. US and international patents may apply.
6. RFM, stylized RFM logo, and RF Monolithics, Inc., are registered trademarks of RF Monolithics, Inc.
Pb
CAUTION: Electrostatic Sensitive Device. Observe precautions for handling.
Notes:
SM3838-8
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©2009-2010 by RF Monolithics, Inc. RF3608D - 6/9/10
5
6
781
3
2
R F 3 6 0 8 D
50 ohm
Antenna T R C 1 0 5
3 1
3 2
0 . 0 4 7 µ F
470 pF
V D D _ P A
R F 3 6 0 8 D - T R C 1 0 5 A p p l i c a t i o n C i r c u i t
F a i r - R i t e
2506031217YO bead
220 nH
4
33 nH
33 nH
1 . 2 p F
5 . 6 n H
5
6
781
3
2
R F 3 6 0 8 D
50 ohm
R F 3 6 0 8 D 5 0 O h m T u n i n g N e t w o r k
220 nH
450 ohm
35 nH
7 p F
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RF3608D Broadband Response, 200 to 2000 MHz
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RF3608D Response, 326.4 to 526.4 MHz
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RF3608D Response, 376.4 to 476.4 MHz
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RF3608D Passband Response
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RF3608D Input Impedance Plot
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RF3608D Balanced Output Impedance Plot
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©2009-2010 by RF Monolithics, Inc. RF3608D - 6/9/10
Case Dimensions
Dimension mm Inches
Min Nom Max Min Nom Max
A3.6 3.8 4.0 0.142 0.150 0.157
B3.6 3.8 4.0 0.142 0.150 0.157
C0.90 1.00 1.1 0.035 0.040 0.043
D0.80 0.90 1.0 0.031 0.035 0.040
E0.90 1.00 1.10 0.035 0.040 0.043
F0.50 0.60 0.70 0.020 0.024 0.028
G2.39 2.54 2.69 0.090 0.100 0.110
H1.40 1.75 2.05 0.055 0.069 0.080
Materials
Solder Pad
Plating 0.3 to 1.0 µm Gold over 1.27 to 8.89 µm Nickel
Lid Plating 2.0 to 3.0 µm Nickel
Body Al2O3 Ceramic
Pb Free
8-Terminal Ceramic Surface-Mount Case
3.8 X 3.8 mm Nominal Footprint
TOP VIEW BOTTOM VIEW
0.066
0.055 TYP.
(1.68)
(1.40)
0.029 TYP.
(O.74)
0.050 TYP.
(1.27)
0.002
(0.05)
0.090
(2.29)
0.033
(0.84)
PCB Footprint
A
1
2
3
B
7
6
5
4
C
H7
6
5
4
E
F
G
1
2
3
88
D
891
YWWS
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Tape and Reel Specifica t ions
“B “
Nominal Size Quantity Per Reel
Inches millimeters
7 178 500
13 330 3000
See Detail " A"
13.0
20.2
2.0
12.0
100 REF.
"B" REF.
COMPONENT ORIENTATION and DIMENSIONS
Carrier Tape Dimensions
Ao 4.25 mm
Bo 4.25 mm
Ko 1.30 mm
Pitc h 8.0 mm
W12.0 mm
RO.3
(MAX.)
Ko
SECTION A-A
0.3 ± 0.05
SECTION B-B
Bo
2.0 4.0
Ao Pitch
BB
AR0.5
(MAX.)
A
5.5
12.0
1.75
1.5
1.50
PIN #1
USER DIRECTION OF FEED
