SAW Components
Data Sheet B4849
2Dec 01, 1999
SAW Components B4849
241,00 MHz
Low-Loss Filter for Mobile Communication
Data Sheet Ceramic package QCC8C
Features
■Low-loss IF filter for mobile telephone
■Channel selection in GSM, PCN, PCS systems
■Ceramic SMD package
■Very small size
Terminals
■Gold-plated Ni
Dimensions in mm, approx. weight 0,10 g
Pin configuration
1,2 Input, balanced
5,6 Output, balanced
7 External coil
3,4,8 To be grounded
Electrostatic Sensitive Device (ESD)
Type Ordering code Marking and Package
according to Packing
according to
B4849 B39241-B4849-U310 C61157-A7-A56 F61074-V8070-Z000
Maximum ratings
Operable temperature range
T
-25 / +75 ˚C
Storage temperature range
T
stg -40 / +85 ˚C
DC voltage
V
DC 0V
Source power
P
s10 dBm
3Dec 01, 1999
SAW Components B4849
241,00 MHz
Low-Loss Filter for Mobile Communication
Data Sheet
Characteristics
Operating temperature:
T
= -25 to +75˚C
Terminating source impedance:
Z
S= 1100 Ω|| -1,0 pF
Terminating load impedance:
Z
L= 1100 Ω|| -1,0 pF
1) Temperature dependence of
f
c:
f
c(
T
) =
f
c(
T
0)(1 +
TC
f(
T
–
T
0)2)
Test matching network to 50 Ω(element values depend on PCB layout):
min. typ. max.
Nominal frequency
f
N— 241,00 — MHz
Minimum insertion attenuation αmin 5,0 5,3 6,5 dB
(Including losses in baluns and matching network)
Amplitude ripple (p-p) ∆α
f
N - 70,0 kHz ...
f
N + 70,0 kHz — 0,2 2,0 dB
Group delay ripple (p-p) ∆τ
f
N - 70,0 kHz ...
f
N + 70,0 kHz — 0,8 1,5 µs
Relative attenuation (relative to αmin)αrel
f
N - 15,00 MHz ...
f
N - 3,00 MHz 42 57 — dB
f
N - 3,00 MHz ...
f
N - 1,60 MHz 38 48 — dB
f
N - 1,60 MHz ...
f
N - 0,60 MHz 38 41 — dB
f
N - 0,60 MHz ...
f
N - 0,40 MHz 25 38 — dB
f
N - 0,40 MHz ...
f
N - 0,330 MHz 18 28 — dB
f
N + 0,330 MHz ...
f
N + 0,40 MHz 18 30 — dB
f
N + 0,40 MHz ...
f
N + 0,60 MHz 25 36 — dB
f
N + 0,60 MHz ...
f
N + 1,60 MHz 38 43 — dB
f
N + 1,60 MHz ...
f
N + 3,00 MHz 38 43 — dB
f
N + 3,00 MHz ...
f
N + 15,00 MHz 42 45 — dB
Impedance within the passband
Input:
Z
IN =
R
IN ||
C
IN — 1100 || 1,0 — Ω || pF
Output:
Z
OUT =
R
OUT ||
C
OUT —1100 || 1,0 —Ω || pF
Temperature coefficient of frequency 1)
TC
f— -0,030 — ppm/K2
Frequency inversion point
T
0—15—˚C
Ls1 = Ls4 = 47nH
Cp2= Cp3= 1,2pF
Lc = 120nH
4Dec 01, 1999
SAW Components B4849
241,00 MHz
Low-Loss Filter for Mobile Communication
Data Sheet
Transfer function (normalized)
5Dec 01, 1999
SAW Components B4849
241,00 MHz
Low-Loss Filter for Mobile Communication
Data Sheet
Published by EPCOS AG
Surface Acoustic Wave Components Division, OFW E MF
P.O. Box 80 17 09, D-81617 München
EPCOS AG 1999. All Rights Reserved.
A
s far as patents or other rights of third parties are concerned, liability is only assumed for compo-
nents per se, not for applications, processes and circuits implemented within components or
assemblies.
T
he information describes the type of component and shall not be considered as assured
characteristics.
T
erms of delivery and rights to change design reserved.
For questions on technology, prices and delivery please contact the sales offices of EPCOS AG or
t
he international representatives.
Due to technical requirements components may contain dangerous substances. For information on
t
he type in question please also contact one of our sales offices.
