70 MHz SAW Filter
4 MHz Bandwidth
Part Number SF0070MF03053S
IDT • SAW Products • 324 Clark Street, Worcester, MA 01606, USA • Ph 1-508-852-5400 • Fax 1-508-852-8456
www.idt.com
DSSF0070MF03053S Rev - 27-Mar-2007
Page 2 of 3
SPECIFICATION
Parameter Min Typ Max Units
Center Frequency (Fc) 1 69.85 70 70.15 MHz
Insertion Loss - 7.1 8 dB
1 dB Bandwidth 3.4 4.1 - MHz
3 dB Bandwidth 4 4.9 - MHz
35 dB Bandwidth - 7.25 8 MHz
Passband Ripple - 0.6 1 dB
Phase Deviation from Linear2 - 4 7 deg
Group Delay Variation2 - 100 150 ns
Absolute Delay - 0.95 - µs
Substrate - LiNbO3 - -
Temperature Coefficient of Frequency (Tc)3 - -90 - ppm/°C
Ambient Temperature (Tref) - 25 - °C
System Source and Load Impedance - 50 - Ω
Notes: 1. Average of lower & upper 3 dB frequencies.
2. Evaluated over 70% of the 3 dB bandwidth.
3. Typical change of frequency response with temperature is ∆f = Fc *(T-Tref)*Tc ppm.
MAXIMUM RATINGS
Parameter Min Max Units
Storage Temperature Range -40 85 ˚C
Input Power Level - 10 dBm
MATCHING CIRCUIT
Component values in 50 Ω: Ls1 = 150 nH Ls2 = 120 nH
Notes:
1. Recommend +/-5% or better component tolerance. Typical inductor Q=40.
2. Optimum component values may change depending on board layout. The values shown here are
intended as a guide only.
11 5
12 6
Input
50 Ω
Single ended
Output
50 Ω
Single ended
GND GND