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DIP Type SAW Filter AGSD-TSF11

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Specification
Content
Features

DIP Type SAW Filter AGSD-TSF11 (433.92 MHz)

Maximum rating:

Input Power Level: 0 dBm
DC voltage: 0V
Operating Temperature: -15 ºC to +60 ºC
Storage Temperature: -40 ºC to +85 ºC

Electrical Characteristics:

Item		Unit	Min.	Type	Max.
Center frequency	Fc	MHz	-	433.92	-
Insertion Loss	IL_min (reference level)	dB	-	2.3	3.5
3dB Bandwidth	BW_3dB	MHz	4	7.7	-
Attenuation: (Reference level from IL_min )
Fc -100 to Fc -200	MHz	dB	56	64	-
Fc -25 to Fc -100	MHz	dB	40	55	-
Fc -10.7	MHz	dB	42	59
Fc +25to Fc +100	MHz	dB	40	60	-
Fc +100 to Fc +200	MHz	dB	40	52	-
Source impedance	Z_s	Ω	-	50	-
Load impedance	Z_L	Ω	-	50	-

Note:

IL_min is the minimum of the pass band attenuation. The center frequency

F_c is the mean value of the upper and lower frequencies at the 3dB filter attenuation level relative to the ILmin.

Dimension: (mm)

AGSD-TSF11

SAW (surface acoustic wave) filters are electromechanical devices commonly used in radio frequency applications. Electrical signals are converted to a mechanical wave in a device constructed of a piezoelectric crystal or ceramic; this wave is delayed as it propagates across the device, before being converted back to an electrical signal by further electrodes. The delayed outputs are recombined to produce a direct analog implementation of a finite impulse response filter. This hybrid filtering technique is also found in an analog sampled filter. SAW filters are limited to frequencies up to 3 GHz.

Engineers realized that a large number of crystals could be collapsed into a single component, by mounting comb-shaped evaporations of metal on a quartz crystal. In this scheme, a "tapped delay line" reinforces the desired frequencies as the sound waves flow across the surface of the quartz crystal. The tapped delay line has become a general scheme of making high-Q filters in many different ways.

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