Preliminary format of data sheet
Terms of delivery and rights to change design reserved OFW EM EU
Page 1 of 5 Sep. 20, 1999
SAW Components
Data Sheet
B4846
225,0 MHz
Low-Loss Filter
SMD ceramic package QCC8C
Features
●Low-loss IF filter for mobile telephone
●Channel selection in GSM, PCN systems
●Ceramic SMD package
●Very small size
●Low insertion attenuation
●Low group delay ripple
Terminals
●Gold-plated Ni
Dimensions in mm, approx. weight 0,10 g
Pin configuration
1,2 Input, balanced
5,6 Output, balanced
4,8 Case - ground
3,7 To be grounded
Electrostatic Sensitive Device (ESD)
Type Ordering code Marking and Package
according to Packing
according to
B4846 B39231-B4846-U310 C61157-A7-A53 F61074-V8070-Z000
Maximum ratings
Operable temperature range
T
– 25/+ 80 ˚C
Storage temperature range
T
stg – 40/+ 85 ˚C
DC voltage
V
DC 5V
Source power
P
s10 dBm
Preliminary format of data sheet
Terms of delivery and rights to change design reserved OFW EM EU
Page 2 of 5 Sep. 20, 1999
SAW Components
Data Sheet
B4846
225,0 MHz
Low-Loss Filter
Characteristics
Reference temperature:
T
= 25 ˚C
Terminating source impedance:
Z
S= 860 Ω || -2,0 pF
Terminating load impedance:
Z
L= 860 Ω || -2,0 pF
1) Temperature dependence of
f
c:
f
c(
T
) =
f
c(
T
0)(1 +
TC
f(
T
–
T
0)2)
min. typ. max.
Nominal frequency
f
N— 225,01 — MHz
Minimum insertion attenuation αmin 3,0 3,9 4,5 dB
(including loss in baluns and matching elements)
Amplitude ripple (p-p) ∆α
f
N - 67,5 kHz ...
f
N + 67,5 kHz — 0,6 1,6 dB
f
N - 80,0 kHz ...
f
N + 80,0 kHz — 0,7 3,0 dB
Group delay ripple (p-p) ∆τ
f
N - 50,0 kHz ...
f
N + 50,0 kHz — 0,2 1,3 µs
f
N - 67,5 kHz ...
f
N + 67,5 kHz — 0,3 1,5 µs
f
N - 80,0 kHz ...
f
N + 80,0 kHz — 0,6 1,8 µs
Relative attenuation (relative to αmin)αrel
f
N - 15,00 MHz ...
f
N - 5,00 MHz 42 45 — dB
f
N - 5,00 MHz ...
f
N - 2,00 MHz 43 46 — dB
f
N - 2,00 MHz ...
f
N - 0,60 MHz 36 37 — dB
fN - 0,60 MHz ... fN - 0,40 MHz 26,5 29 — dB
f
N - 0,40 MHz ...
f
N - 0,20 MHz 6,5 12 — dB
f
N + 0,20 MHz ...
f
N + 0,40 MHz 6,5 12 — dB
f
N + 0,40 MHz ...
f
N + 0,60 MHz 26,5 29 — dB
f
N + 0,60 MHz ...
f
N + 2,00 MHz 36 37 — dB
f
N + 2,00 MHz ...
f
N + 5,0 MHz 43 47 — dB
f
N + 3,00 MHz ...
f
N + 15,0 MHz 42 45 — dB
Impedance within the passband
Input:
Z
IN =
R
IN ||
C
IN — 860 || 2,0 — Ω || pF
Output:
Z
OUT =
R
OUT ||
C
OUT —860 || 2,0 —Ω || pF
Temperature coefficient of frequency 1)
TC
f— -0,036 — ppm/K2
Frequency inversion point
T
0—25—˚C
Preliminary format of data sheet
Terms of delivery and rights to change design reserved OFW EM EU
Page 3 of 5 Sep. 20, 1999
SAW Components
Data Sheet
B4846
225,0 MHz
Low-Loss Filter
Characteristics
Operating temperature range:
T
= -20 to +70 ˚C
Terminating source impedance:
Z
S= 860 Ω || -2,0 pF
Terminating load impedance:
Z
L= 860 Ω || -2,0 pF
1) Temperature dependence of
f
c:
f
c(
T
) =
f
c(
T
0)(1 +
TC
f(
T
–
T
0)2)
min. typ. max.
Nominal frequency
f
N— 225,00 — MHz
Minimum insertion attenuation αmin 3,0 3,9 5,0 dB
(including loss in baluns and matching elements)
Amplitude ripple (p-p) ∆α
f
N - 67,5 kHz ...
f
N + 67,5 kHz — 0,7 2,2 dB
f
N - 80,0 kHz ...
f
N + 80,0 kHz — 0,8 3,2 dB
Group delay ripple (p-p) ∆τ
f
N - 50,0 kHz ...
f
N + 50,0 kHz — 0,2 1,3 µs
f
N - 67,5 kHz ...
f
N + 67,5 kHz — 0,4 1,6 µs
f
N - 80,0 kHz ...
f
N + 80,0 kHz — 0,7 1,8 µs
Relative attenuation (relative to αmin)αrel
f
N - 15,00 MHz ...
f
N - 5,00 MHz 42 45 — dB
f
N - 5,00 MHz ...
f
N - 2,00 MHz 43 46 — dB
f
N - 2,00 MHz ...
f
N - 0,60 MHz 35 37 — dB
fN - 0,60 MHz ... fN - 0,40 MHz 26 29 — dB
f
N - 0,40 MHz ...
f
N - 0,20 MHz 5 13 — dB
f
N + 0,20 MHz ...
f
N + 0,40 MHz 5 11 — dB
f
N + 0,40 MHz ...
f
N + 0,60 MHz 26 29 — dB
f
N + 0,60 MHz ...
f
N + 2,00 MHz 35 37 — dB
f
N + 2,00 MHz ...
f
N + 5,00 MHz 43 47 — dB
f
N + 5,00 MHz ...
f
N + 15,00 MHz 42 45 — dB
Impedance within the passband
Input:
Z
IN =
R
IN ||
C
IN — 860 || 2,0 — Ω || pF
Output:
Z
OUT =
R
OUT ||
C
OUT — 860 || 2,0 —Ω || pF
Temperature coefficient of frequency 1)
TC
f— -0,036 — ppm/K2
Frequency inversion point
T
0—25—˚C
Preliminary format of data sheet
Terms of delivery and rights to change design reserved OFW EM EU
Page 4 of 5 Sep. 20, 1999
SAW Components
Data Sheet
B4846
225,0 MHz
Low-Loss Filter
Test matching network (element values depend on pcb layout)
Source impedance ZS=50 Ω, load impedance ZL=50 Ω
Ls1 = Ls2 = 47 nH
Ls5 = Ls6 = 47 nH
Cp3 = Cp4 = 1,2 pF
Preliminary format of data sheet
Terms of delivery and rights to change design reserved OFW EM EU
Page 5 of 5 Sep. 20, 1999
SAW Components
Data Sheet
B4846
225,0 MHz
Low-Loss Filter
Transfer function (normalized)