RF Components - SAW SF2045A 140 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

SF2045A

140 MHz SAW Filter - IF

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� Designed for IF Applications
� Excellent Size-to-Performance Ratio
� Hermetic 13.3 x 6.5 mm Surface-mount Case
� 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 05/10/07

download RoHS Statement

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Specs
AppNotes
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Electrical Characteristics

Characteristic	Symbol	Minimum	Typical	Maximum	Units
Center Frequency (3dB points) at 25�C	fC	139.60	140.000	140.40	MHz
Passband Insertion Loss at fc	IL		7.7	11	dB
1 db Passband	BW1	8	9.8		MHz
3 db Passband	BW3	10	10.8		MHz
Amplitude Ripple over 1 dB BW			0.4	0.8	dBP-P
Phase Linearity over 1 dB BW			2.7	8	� P-P
Group Delay Variation over 1 dB BW	GDV		50	100	nsP-P
Absolute Group Delay			1.057		usec
Rejection 35 dB BW			13.9	15	MHz
10 - 120 MHz		40	52		dB
120 - 130 MHz		40	47		dB
150 - 1000 MHz		40	45		dB
Operating Temperature Range	TA	-40	25	85	�C
Frequency Temperature Coefficient	FTC		-94		ppm/�C