EPCOS B3853 User Manual
SAW Components
Data Sheet B3853
SAW Components B3853
141,0 MHzLow-Loss Filter
Data Sheet
Ceramic package DCC18
Features
■ Low-loss IF filter for CDMA base station
■ Temperature stable
■ Ceramic SMD package
■ Unbalanced or balanced operation
Terminals
■ Gold plated
Dimensions inmm, approx. weight 0,8 g
Pin configuration
1 Input or balanced input
10 Input ground or balanced input
6 Output or balanced output
5 Output ground or balanced output
3, 8 Ground
2, 4, 7, 9 Case ground
Type Ordering code Marking and Package
according to
Packing
according to
B3853 B39141-B3853-U210 C61157-A7-A54 F61074-V8166-Z000
Electrostatic Sensitive Device (ESD)
Maximum ratings
Operable temperature range
Storage temperature range
DC voltage
Source power
T
T
stg
V
DC
P
s
–40 / +85 ˚C
–40 / +85 ˚C
5V
10 dBm
2 Sep 30, 2002
SAW Components B3853
141,0 MHzLow-Loss Filter
Data Sheet
Characteristics
Operating temperature range: T = 0 to +85 ˚C
Terminating source impedance:
Terminating load impedance:
Z
= 50 Ω and external matching network
S
Z
= 50 Ω and external matching network
L
min. typ. max.
Nominal frequency
f
N
— 141,0 — MHz
Minimum insertion attenuation α
3,75 dB bandwidth
α
≤ 3,75dB
rel
Amplitude ripple (p-p)
Phase Linearity (rms)
Absolute group delay @
Group delay ripple (p-p)
f
± 525 kHz ∆α — 0,2 1,0 dB
N
f
± 630 kHz ∆ϕ — 1,0 2,0 deg
N
f
N
f
± 525 kHz ∆τ — 100 300 ns
N
Relative attenuation (relative to αN) α
50 MHz ... 120 MHz 50 60 — dB
120 MHz ...
f
− 1350 kHz ...
N
f
+ 1250 kHz ...
N
f
+ 1750 kHz ... 175 MHz
N
f
− 1350 kHz 45 52 — dB
N
f
− 1250 kHz 41 45 — dB
N
f
+ 1750 kHz 41 45 — dB
N
1)
175 MHz ... 500 MHz 60 70 — dB
Return loss
f
± 525 kHz 10 15 — dB
N
N
B
3,75dB
— 11,0 13,0 dB
1,18 1,32 — MHz
τ — 2,75 — µs
rel
45 48 — dB
3rd-order intercept point
Temperature coefficient of frequency
2)
Turnover temperature
1)
Except for two peaks around 144 and 146 MHz with typically 45dB
2)
Temperature dependance of
f
:
f
(
T
c
) =
c
A
IP3
TC
f
T
0
f
(
T
)(1 +
c
TC
0
40 45 — dB
— –0,036 — ppm/K
— 42,5 — ˚C
(
T
–
f
A
3 Sep 30, 2002
2
T
)2)
0
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