RFM RF1181D

RF1181D
®
•
•
•
•
Ideal Front-End Filter for 916.5 MHz Wireless Receivers
Low-Loss, Coupled-Resonator Quartz Design
Simple External Impedance Matching
Complies with Directive 2002/95/EC (RoHS)
Pb
The RF1181D is a low-loss, compact, and economical surface-acoustic-wave (SAW) filter designed to provide front-end selectivity in 916.5 MHz receivers. Receiver designs using this filter include superhet with
10.7 MHz IF, direct conversion and superregen. Typical applications of these receivers are wireless remotecontrol and security, data telemetry, and meter reading devices operating in the USA under FCC Part 15 and
in Canada under DoC RSS-210.
916.5 MHz
SAW Filter
This coupled-resonator filter (CRF) uses selective null placement to provide suppression, typically greater
than 40 dB, of the LO and image spurious responses of superhet receivers with 10.7 MHz IF. RFM’s advanced SAW design and fabrication technology is utilized to achieve high performance and very low loss with
simple external impedance matching (not included). Our new patent pending solder seal process utilizes a
Faraday shield lid, which improves out of band rejection.
SM3838-8 Case
3.8 x 3.8
Electrical Characteristics
Characteristic
Center Frequency at 25°C
Sym
fc
Absolute Frequency
Tolerance from 916.50 MHz
Insertion Loss
3 dB Bandwidth
Rejection (Attenuation: relative to Min IL:)
∆fc
1, 2, 3
IL
1, 3
BW3
1, 3
Frequency Aging
Impedance @ fC
Minimum
916.5
dB
500
600
900
kHz
50
30
35
906 to 910 MHz
25
30
35
40
925 to 933 MHz
14
18
933 to 940 MHz
30
35
940 to 1100 MHz
40
45
1, 3
Freq. Temp. Coefficient
FTC
Absolute Value during the First Year
|fA|
5
Input ZIN = RIN/CIN
ZIN
1
7 Inch Reel
13 Inch Reel
dB
0.032
ppm/°C2
≤10
ppm/yr
37Ω // 1.6pF
25Ω // 1.8pF
Lid Symbolization (in addition to Lot and/or Date Codes)
Standard Reel Quantity
MHz
4.0
40
ZOUT
Units
2.5
10 to 895 MHz
Output ZOUT = ROUT/COUT
Maximum
kHz
3, 4
Standard Reel Quantity
Typical
895 to 906 MHz
922 to 925 MHz
Temperature
Notes
435 // YWWS
9
500 Pieces/Reel
3000 Pieces/Reel
CAUTION: Electrostatic Sensitive Device. Observe precautions for handling.
Notes:
1.
2.
3.
4.
5.
6.
7.
8.
9.
Unless noted otherwise, all measurements are made with the filter installed in the specified test fixture which is connected to a 50 Ω test system with VSWR ≤ 1.2:1. The
test fixture L and C are adjusted for minimum insertion loss at the filter center frequency, fc. Note that insertion loss and bandwidth and passband shape are dependent on
the impedance matching component values and quality.
The frequency fc is defined as the midpoint between the 3dB frequencies.
Where noted specifications apply over the entire specified operating temperature range of -40 to 90°C.
The turnover temperature, TO, is the temperature of maximum (or turnover) frequency, fo. The nominal frequency at any case temperature, Tc, may be calculated from:
f = fo [1 - FTC (To - Tc)2].
Frequency aging is the change in fc with time and is specified at +65°C or less. Aging may exceed the specification for prolonged temperatures above +65°C. Typically,
aging is greatest the first year after manufacture, decreasing significantly in subsequent years.
The design, manufacturing process, and specifications of this device are subject to change.
One or more of the following U.S. Patents apply: 4,54,488, 4,616,197, and others pending.
All equipment designs utilizing this product must be approved by the appropriate government agency prior to manufacture or sale.
Tape and Reel Standard for ANSI/EIA 481.
RF Monolithics, Inc.
Phone: (972) 233-2903
Fax: (972) 387-8148
RFM Europe
Phone: 44 1963 251383
Fax: 44 1963 251510
©1999 by RF Monolithics, Inc. The stylized RFM logo are registered trademarks of RF Monolithics, Inc.
E-mail: [email protected]
http://www.rfm.com
RF1181D-081704
Page 1 of 3
916.5 MHz
SAW Filter
RF Monolithics, Inc.
Phone: (972) 233-2903
Fax: (972) 387-8148
RFM Europe
Phone: 44 1963 251383
Fax: 44 1963 251510
©1999 by RF Monolithics, Inc. The stylized RFM logo are registered trademarks of RF Monolithics, Inc.
E-mail: [email protected]
http://www.rfm.com
RF1181D-081704
Page 2 of 3
916.5 MHz
SAW Filter
Absolute Maximum Ratings
Rating
Value
Units
Input Power Level
10
dBm
DC Voltage
12
VDC
Storage Temperature
-40 to +125
°C
Operable Temperature Range
-40 to +125
°C
260
°C
Soldering Temperature
(10 seconds / 5 cycles max.)
Pin
Connection
1
Input Ground
2
Input
3
Ground
4
Case Ground
5
Output Ground
6
Output
7
Ground
8
Case Ground
A
E
C
B
8
Electrical Connections
8
1
7
H 7
1
2
6
6
2
3
5
5
3
G
4
4
F
D
Matching Circuit to 50Ω
Ω
Case Dimensions
Dimension
7
1
12 nH
12 nH
6
Output
A
B
C
D
E
F
G
H
5
8
4
2
Input
3
Min
3.6
3.6
1.00
0.95
0.90
0.50
2.39
1.40
mm
Nom
3.8
3.8
1.20
1.10
1.0
0.6
2.54
1.75
Max
4.0
4.0
1.40
1.25
1.10
0.70
2.69
2.05
Min
0.14
0.14
0.04
0.037
0.035
0.020
0.090
0.055
Inches
Nom
0.15
0.15
0.05
0.043
0.04
0.024
0.100
0.069
Max
0.16
0.16
0.055
0.05
0.043
0.028
0.110
0.080
OPTIONAL
Electrical Connections
Pin
1
2
3
4
5
6
7
8
Connection
Input
Input Ground
Ground
Case Ground
Output
Output Ground
Ground
Case Ground
Matching Circuit to 50Ω
Ω
12 nH
7
6
12 nH
Output
RF Monolithics, Inc.
Phone: (972) 233-2903
Fax: (972) 387-8148
RFM Europe
Phone: 44 1963 251383
Fax: 44 1963 251510
©1999 by RF Monolithics, Inc. The stylized RFM logo are registered trademarks of RF Monolithics, Inc.
1
8
Input
2
4
5
3
E-mail: [email protected]
http://www.rfm.com
RF1181D-081704
Page 3 of 3