Document
SAW Components
Data Sheet B3570
SAW Components Low-loss Filter Data Sheet
B3570 868,30 MHz
Ceramic package QCC8C
Features
s RF low-loss filter for remote control receivers s Package for Surface Mounted Technology
(SMT)
Terminals
s Ni, gold plated
typ. dimensions in mm, approx. weight 0,1 g
Pin configuration 1 2,7 5 3,6 4,8 Input Input Ground Output Output Ground Case - Ground
Type B3570
Ordering code B39871-B3570-U310
Marking and package according to C61157-A7-A56
Packing according to F61074-V8070-Z000
Electrostactic Sensitive Device (ESD)
Maximum ratings Operable temperature range Storage temperature range DC voltage Source power
TA Tstg VDC PS
–45/+90 –45/+90 0 0
˚C ˚C V dBm
source impedance 50 Ω
2
May 09, 2001
SAW Components Low-loss Filter Data Sheet
Characteristics Reference temperature: Terminating source impedance: Terminating load impedance:
B3570 868,30 MHz
TA = 25 ˚C ZS = 50 Ω and matching network ZL = 50 Ω and matching network
min. typ. 868,39 max. — MHz
Center frequency (center frequency between 3 dB points)
fC
—
Minimum insertion attenuation αmin 868,00 ... 868,78 MHz Pass band (relative to αmin) 868,00 ... 868,78 MHz 867,90 ... 868,88 MHz Relative attenuation (relative to αmin) 10,00 ... 700,00 700,00 ... 830,00 830,00 ... 850,00 850,00 ... 865,20 871,00 ... 874,50 874,50 ... 883,00 883,00 ... 900,00 900,00 ...1000,00 αrel MHz MHz MHz MHz MHz MHz MHz MHz
—
2,7
4,2
dB
— —
1,0 1,5
3,0 6,0
dB dB
50 35 32 25 11 22 30 35
55 45 40 30 16 27 35 40
— — — — — — — —
dB dB dB dB dB dB dB dB
Impedance for pass band matching 2) Input: ZIN = RIN || CIN Output: ZOUT = ROUT || COUT Temperature coefficient of frequency 1) Frequency inversion point
1)Temperature 2)
— —
216 || 2,20 222 || 2,20 –0,03 —
— — — 35
Ω || pF Ω || pF ppm/K2 °C
TCf T0
— 15
dependence of fC: fC(TA) = fC(T0) (1 + TCf(TA – T0)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 impedance into the input matching / output matching network is calculated. The conjugate complex value of these characteristic impedances are the input and output impedances for flat passband. For more details, we refer to EPCOS application note #4.
3
May 09, 2001
SAW Components Low-loss Filter Data Sheet
Characteristics Reference temperature: Terminating source impedance: Terminating load impedance:
B3570 868,30 MHz
TA = –45 ... 90 ˚C ZS = 50 Ω and matching network ZL = 50 Ω and matching network
min. typ. 868,30 max. — MHz
Center frequency (center frequency between 3 dB points)
fC
—
Minimum insertion attenuation αmin 868,00 ... 868,78 MHz Pass band (relative to αmin) 868,00 ... 868,60 MHz 867,90 ... 868,70 MHz Relative attenuation (relative to αmin) 10,00 ... 700,00 700,00 ... 830,00 830,00 ... 850,00 850,00 ... 865,02 871,00 ... 874,50 874,50 ... 883,00 883,00 ... 900,00 900,00 ...1000,00 αrel MHz MHz MHz MHz MHz MHz MHz MHz
.