B39401B3742H110 Datasheet, PDF (5/12 Pages) –

SAW Components
SAW filter
Data sheet
Characteristics
Temperature range for specification:
Terminating source impedance:
Terminating load impedance:
Center frequency
Minimum insertion attenuation
incl. loss in matching elements
excl. loss in matching elements
B3742
400.00 MHz
T = –40 ˚C to +105 ˚C
Z_S = 50 Ω and matching network
Z_L = 50 Ω and matching network
min.
typ.
max.
@ 25 ˚C
f_C
—
400.00
—
α_min
—
2.3
3.0
—
1.8
2.5
MHz
dB
dB
Pass band (relative to α_min)
399.875 ... 400.125MHz
—
0.6
3.0 dB
Relative attenuation (relative to α_min)
α_rel
10.00 ... 370.00 MHz
55
60
— dB
370.00 ... 390.00 MHz
50
55
— dB
390.00 ... 399.00 MHz
22
27
— dB
399.00 ... 399.30 MHz
15
25
— dB
400.70 ... 401.00 MHz
15
21
— dB
401.00 ... 408.00 MHz
22
27
— dB
408.00 ... 414.00 MHz
35
40
— dB
414.00 ... 468.00 MHz
45
50
— dB
468.00 ... 800.00 MHz
50
55
— dB
800.00 ... 1500.00 MHz
60
65
— dB
1500.00 ... 2500.00 MHz
50
55
— dB
Impedance for pass band matching¹⁾
Input: Z_IN = R_IN || C_IN
Output: Z_OUT = R_OUT || C_OUT
—
380 || 2.2
— Ω || pF
—
380 || 2.2
— Ω || pF
1) _{Impedance for passband matching bases on an ideal, perfect matching of the SAW filter to source- and to load}
impedance (here 50 Ohm). After removal of the SAW filter the input impedance of the input and output match-
ing network is calculated. The conjugate complex value of these characteristic impedances are the input and
output impedances for flat passband. For more details we refer to EPCOS application note #18.
Please read cautions and warnings and
important notes at the end of this document.
3 May 16, 2013