RF1210 RF Monolithics, RF1210 Datasheet

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RF1210

Manufacturer Part Number
RF1210
Description
Frequency = 303.825 ;; Description = RF Filter
Manufacturer
RF Monolithics
Datasheet

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Company
Part Number
Manufacturer
Quantity
Price
Part Number:
RF1210
Manufacturer:
MITSUBISH
Quantity:
5 000
Part Number:
RF1210D
Manufacturer:
MITSUBISHI
Quantity:
5 000
Notes:
RF Monolithics, Inc.
RFM Europe
©1999 by RF Monolithics, Inc. The stylized RFM logo are registered trademarks of RF Monolithics, Inc.
The RF1210 is a low-loss, compact, and economical surface-acoustic-wave (SAW) filter designed to provide
front-end selectivity in 303.825 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, in Australia, in Japan, and
in Korea.
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). Quartz construction provides excellent frequency stability
over a wide temperature range.
Electrical Characteristics
1. Unless noted otherwise, all measurements are made with the filter installed in the specified test fixture which is connected to a 50
2. The frequency f
3. Unless noted otherwise, specifications apply over the entire specified operating temperature range.
4. The turnover temperature, T
5. 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
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.
Center Frequency at 25°C
Insertion Loss
3 dB Passband
Rejection
Temperature
Frequency Aging
External Impedance
Lid Symbolization (in addition to Lot and/or Date Codes)
VSWR
and passband shape are dependent on the impedance matching component values and quality.
be calculated from: f = f
above +65°C. Typically, aging is greatest the first year after manufacture, decreasing significantly in subsequent years.
Ideal Front-End Filter for 303.825 MHz Wireless Receivers
Low-Loss, Coupled-Resonator Quartz Design
Simple External Impedance Matching
Rugged TO39 Hermetic Package
CAUTION: Electrostatic Sensitive Device. Observe precautions for handling.
1.2:1. The test fixture L and C are adjusted for minimum insertion loss at the filter center frequency, f
Phone: (972) 233-2903
Phone: 44 1963 251383
c
is defined as the midpoint between the 3dB frequencies.
Characteristic
Tolerance from 303.825
at f
at f
Ultimate
Operating Case Temp.
Turnover Temperature
Turnover Frequency
Freq. Temp. Coefficient
Absolute Value during the First Year
Series Inductance
Shunt Capacitance
o
Absolute Frequency
[1 - FTC (T
c
c
O
- 21.4 MHz (Image)
- 10.7 MHz (LO)
, is the temperature of maximum (or turnover) frequency, f
o
- T
c
)
2
].
Fax: (972) 387-8148
Fax: 44 1963 251510
Sym
BW
FTC
|fA|
T
T
f
f
IL
C
L
C
O
f
O
C
C
3
Notes
1, 2
1, 2
3, 4
1
1
5
1
o
. The nominal frequency at any case temperature, T
Minimum
303.745
500
-35
40
15
37
RFM RF1210
Typical
0.032
E-mail: info@rfm.com
http://www.rfm.com
RF1210-082401
f
700
C
1.7
50
40
80
52
87
10
9
+7
c
303.825 MHz
. Note that insertion loss, bandwidth,
SAW Filter
RF1210
TO39-3 Case
Maximum
303.905
+85
±80
800
3.0
67
test system with
ppm/°C
ppm/yr
Page 1 of 2
Units
MHz
MHz
kHz
kHz
dB
dB
°C
pF
c
, may
2

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