FILTERS
FOR FM APPLICATIONS–HIGHLY SELECTIVE G.D.T. FLAT TYPE
SFE MX/MA8/ML 10.7MHz
The SFE 10.7MX/MA8/ML lines of ceramic
filters were designed to minimize the
dispersion of amplitude and phase
characteristics within the pass band. Because
the excellent G.D.T. characteristics of these
filters insure signal integrity, they are
recommended for use in applications ranging
from high grade stereo receivers to digital
transmission systems.
FEATURES
s Little dispersion of amplitude characteristics
and phase characteristics (G.D.T.
characteristics)
s The SFE 10.7 MX Series has G.D.T.
characteristics and is useful for obtaining
low distortion. SFE 10.7 ML Series, in these
ceramic filters, being in harmony with
flatness of G.D.T., roundness of the
amplitude and selectivity characteristics,
therefore, these ceramic filters are suitable
to high-grade stereo tuners. Even if
mismatching condition, they can keep little
distortion because of low Qm of ceramic
material. The SFE 10.7 MA8 Series is
based on SFE 10.7 MA5/MS2/MS3, and
it obtains high selectivity with low loss.
There is little dispersion of amplitude and
G.D.T. characteristics, and low distortion
rate can be obtained.
s All products are inspected for symmetry
and roundness of amplitude
DIMENSIONS
MX SERIES
Low Distortion
9.0 max.
MA8 SERIES
High Selectivity, Low Loss
7.0 ± 2
ML SERIES
Selectivity
7.0 ± 2
TEST CIRCUIT
R1 ቤ ባ ቢ
E10.7X
M
11.0 max.
5.0 ± 1
2.5 2.5
ቤባቢ
3±1
: EIA-J Date Code
E10.7A
M
7.0 ± 2
5.0 ± 1
2.5 2.5
ቤባቢ
3±1
: EIA-J Date Code
E10.7L
M
7.0 ± 2
5.0 ± 1
2.5
ቤባቢ
2.5
3±1
: EIA-J Date Code
Rg=50⍀
S.S.G.
C R2
RF
Voltmeter
R1 + Rg = R2 = 330⍀
C = 10pF
(including stray capacitance and input
capacitance of RF Voltmeter)
ቢ INPUT
ባ GROUND
ቤ OUTPUT
SPECIFICATIONS
SFE MX/MA8/ML SERIES
Part Number
3dB Bandwidth 20dB Bandwidth Insertion Loss Spurious (9~12MHz) Ripple w/n 3dB
(kHz)
(kHz) max. (dB) max.
(dB) min.
Bandwidth (dB)
G.D.T. Bandwidth
(kHz) min.
SFE10.7MX-A
250 ± 40
670 (620)
MX Series
SFE10.7MX2-A
SFE10.7MZ1-A
220 ± 40
180 ± 30
610 (560)
530 (460)
SFE10.7MZ2-A
150 ± 30
500 (420)
SFE10.7MA8-A
280 ± 50
650 (520)
MA8 Series SFE10.7MS2G-A
230 ± 50
600 (420)
SFE10.7MS3G-A
180 ± 40
520 (380)
SFE10.7ML-A
280 ± 50
700 (610)
ML Series SFE10.7MP3-A
250 ± 50
650 (550)
SFE10.7MM-A
230 ± 50
600 ( 510)
• Input/output impedance: 330⍀
• The rank of center frequency is available in two series: 30kHz steps and 25kHz steps.
• The G.D.T. waveforms of all these types are controlled.
12 (10)
12.5 (10.5)
14 (12.3)
14 (12.6)
6 (4)
7 (4.5)
7 (5)
9 (7)
10 (8)
11 (9)
25 (33)
30 (37)
33 (38)
35 (41)
30 (43)
40 (45)
40 (45)
25 (33)
30 (35)
30 (38)
0 max.
0 max.
0 max.
0 max.
0.5 max.
0 max.
0 max.
0 max.
1.0 max.
0 max.
0.2 sec. fo ±110kHz
0.15 sec. fo ±80kHz
0.15 sec. fo ±60kHz
0.15 sec. fo ±50kHz
0.5 sec. fo ±80 (±100)
0.5 sec. fo ±60 (±75)
0.5 sec. fo ±45 (±60)
0.25 sec. fo ±70 (±105)
0.25 sec. fo ±65 (±90)
0.25 sec. fo ±60 (±85)
( ) Typical value
PART NUMBERING SYSTEM
SFE 10.7M MX
H–A
SERIES
CENTER FREQUENCY
in MHz
RATING, CHARACTERISTICS
TOLERANCE OF
CENTER FREQUENCY
±30kHz = Blank
±25kHz = H
±20kHz = K
RANK OF CENTER
FREQUENCY
̆Applicable in North American market only. ̄Applicable in European market only.
For more detailed information regarding this product line in North America, see Catalog No. P-05-D. To receive additional information on Murata Products call 1-800 -831-9172.
For more detailed information regarding this product line in Europe, see Catalog No. P61E-4.
106
