RF Monolithics, Inc.
Phone: (972) 233-2903
Fax: (972) 387-9148
E-mail: info@rfm.com
Page 1 of 2
RFM Europe
Phone: 44 1963 251383
Fax: 44 1963 251510
http://www.rfm.com
1999 by RF Monolithics, Inc. The stylized RFM logo are registered trademarks of RF Monolithics, Inc.
RF1171B-082201
Electrical Characteristics
Characteristic
Sym
Notes
Minimum
Typical
Maximum
Units
Nominal Frequency
f
c
1, 2
418.0
MHz
Tolerance from 418.0 MHz
fc
80
dB
Insertion Loss
IL
1
3.0
5.0
dB
3 dB Bandwidth
BW
3
1, 2
500
600
800
kHz
Rejection
at f
C
- 21.4 MHz (Image)
1
40
50
dB
at f
C
- 10.7 MHz (LO)
15
30
Ultimate
80
Temperature
Operating Case Temp.
T
C
3, 4
-40
+85
C
Turnover Temperature
T
O
15
25
40
C
Turnover Frequency
f
O
f
c
MHz
Freq. Temp. Coefficient
FTC
0.032
ppm/C
2
Frequency Aging
Absolute Value during the First Year
|fA|
5
10
ppm/yr
External Impedance
Series Inductance
L
1
TBD
nH
Shunt Capacitance
C
TBD
pF
Lid Symbolization (in addition to Lot and/or Date Codes)
RFM RF1171B
Ideal Front-End Filter for Wireless Receiver in the US and UK
Low-Loss, Coupled-Resonator Quartz Design
Simple External Impedance Matching
Surface-Mount Ceramic Case with 52 mm
2
Footprint
Complies with Directive 2002/95/EC (RoHS)
The RF1171B is a low-loss, compact, and economical surface-acoustic-wave (SAW) filter designed to pro-
vide front-end selectivity in 418.0 MHz receivers. Receiver designs using this filter include superhet with
10.7 MHz or 500 kHz IF, direct conversion and superregen. Typical applications of these receivers are wire-
less remote-control and security devices operating in the USA under FCC Part 15.
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 ad-
vanced 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.
418.0 MHz
SAW Filter
RF1171B
SM8558-8 Case
CAUTION: Electrostatic Sensitive Device. Observe precautions for handling.
Notes:
1. Unless noted otherwise, all measurements are made with the filter installed in the specified test fixture which is connected to a 50
test system with
VSWR
1.2:1. The test fixture L and C are adjusted for minimum insertion loss at the filter center frequency, f
c
. Note that insertion loss, bandwidth,
and passband shape are dependent on the impedance matching component values and quality.
2. The frequency f
c
is defined as the midpoint between the 3dB frequencies.
3. Unless noted otherwise, specifications apply over the entire specified operating temperature range.
4. The turnover temperature, T
O
, is the temperature of maximum (or turnover) frequency, f
o
. The nominal frequency at any case temperature, T
c
, may
be calculated from: f = f
o
[1 - FTC (T
o
- T
c
)
2
].
5. Frequency aging is the change in fc with time and is specified at +65C or less. Aging may exceed the specification for prolonged temperatures
above +65C. Typically, aging is greatest the first year after manufacture, decreasing significantly in subsequent years.
6. The design, manufacturing process, and specifications of this device are subject to change without notice.
7. One or more of the following U.S. Patents apply: 4,54,488, 4,616,197, and others pending.
8. All equipment designs utilizing this product must be approved by the appropriate government agency prior to manufacture or sale.
418.0 MHz SAW Filter
RF Monolithics, Inc.
Phone: (972) 233-2903
Fax: (972) 387-9148
E-mail: info@rfm.com
Page 2 of 2
RFM Europe
Phone: 44 1963 251383
Fax: 44 1963 251510
http://www.rfm.com
1999 by RF Monolithics, Inc. The stylized RFM logo are registered trademarks of RF Monolithics, Inc.
RF1171B-082201
Typical Filter Response
Typical filter responses are shown below. The actual response is dependent on external impedance matching and circuit layout. Illustrated frequencies
and minimum rejection for LO and IMAGE are shown only for superhet receivers with 10.7 MHz IF.
Absolute Maximum Ratings
Rating
Value
Units
Incident RF Power
+13
dBm
DC Voltage between any 2 pins (Observe ESD Precautions)
30
VDC
Case Temperature
5
-45 to +85
C
Soldering Temperature
(10 seconds / 5 cycles max.)
260
C
Electrical Connections
Typical Demonstration Circuit
Case Design
Dimensions
Millimeters
Inches
Min
Max
Min
Max
A
8.71
0.343
B
6.04
0.238
C
2.03
0.080
D
0.79 Nominal
0.031 Nominal
E
1.14 Nominal
0.045 Nominal
F
1.98 Nominal
0.078 Nominal
G
0.79 Nominal
0.031 Nominal
H
6.91
0.040
K
4.24
0.167
M
0.81
0.032
N
2.54 Nominal
0.100 Nominal
P
1.91 Nominal
0.075 Nominal
Pin
Connection
1
Input
2
Ground
3
Output Return
4
Case Ground
5
Output
6
Ground
7
Input Return
8
Case Ground
PDF 
ZIP