RF Components - SAW SF1142B 315 MHz SAW SAW Filter - IF - RFM offers a full set of custom embedded wireless networking solutions like Zigbee wireless mesh sensor networks, RF modules, IC transceiver, IC transmitters and IC receivers. RFM, Inc. manufactures low power wireless and RF radio modules, wireless mesh nodes for distributed sensing on distributed sensor networks. Low Power radio, n../arrowband and short range devices, front end saw filters, active RFID, RFIC, coupled resonator filters, single silicon chips in the 70MHZ and 300-1000Mhz range.

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RF Components
Products Guide

SF1142B

315 MHz SAW Filter - IF

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� Designed for SDARS IF Receiver
� Low Insertion Loss
� 5.0 X 7.0 mm Surface-Mount Case
� Differential Input and Output
� Complies with Directive 2002/95/EC (RoHS)
Click here if you need additional technical information,
to inquire about samples or to discuss your custom needs.

download data sheet Rev Date 02/16/06

download RoHS Statement

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Specs
AppNotes
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Electrical Characteristics

Characteristic	Symbol	Minimum	Typical	Maximum	Units
Nominal Center Frequency	fC		315.000		MHz
Passband Insertion Loss at fc	IL		13.0	14.0	dB
1dB Passband	BW1	�2.1	�2.25		MHz
Fast Amplitude Ripple over fc �2.1 MHz				1.0	dBP-P
Group Delay Variation over fc �2.1 MHz	GDV		75	200	nsP-P
Rejection 100 to fc-4.6 and fc+4.85 to fc+100 MHz		40	47		dB
Operating Temperature Range	TA	-40		+85	�C
Differential Input and Output Impedance			250		ohms