Datasheet > B3550

B3550

更新时间： 2022-11-24 21:54:37

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描述
SAW Components Low-loss Filter

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B3550 数据手册

SAW Components

Low-loss Filter

Data Sheet

B3550

433,92 MHz

Characteristics

Reference temperature:

T_A= 25 ˚C

Terminating source impedance:

Terminating load impedance:

Z_S= 50 Ω and matching network t. b. d.

Z_L= 50 Ω and matching network t. b. d.

min.

typ.

max.

f_C

—

433,96

—

MHz

Center frequency

(center frequency between 3 dB points)

Minimum insertion attenuation

α_min

433,80 ... 434,12 MHz

—

2,0

3,5 dB

Pass band (relative to α_min

)

433,76 ... 434,16 MHz

433,74 ... 434,18 MHz

433,68 ... 434,24 MHz

—

1,0

1,5

2,0 dB

3,0 dB

6,0 dB

Relative attenuation (relative to α_min

)

α_rel

10,00 ... 414,00 MHz

414,00 ... 428,00 MHz

428,00 ... 432,92 MHz

434,92 ... 442,00 MHz

442,00 ... 550,00 MHz

550,00 ...1000,00 MHz

—

Impedance for pass band matching ²⁾

Input: Z_IN= R_IN|| C_IN

Output: Z_OUT= R_OUT|| C_OUT

—

270 || 2,67

250 || 3,20

—

Ω || pF

Temperature coefficient of frequency ¹⁾

Frequency inversion point

TC_f

T₀

—

–0,03

—

ppm/K²

°C

¹⁾Temperature dependence of f_C: f_C(T_A) = f_C(T₀) (1 + TC_f(T_A– T₀)²)

²⁾Impedance for passband matching bases on an ideal, perfect matching of the SAW filter to

source- and to load impedance (here 50 Ohm). After the SAW filter is removed and input imped-

ance into the input matching / output matching network is calculated.

The conjugate complex value of these characteristic impedances are the input and output imped-

ances for flat passband. For more details, we refer to EPCOS application note #4.

May 09, 2001

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