B4858 [ETC]
Analog IC ; 模拟IC\n
ETC 
SAW Components
Data Sheet B4858
SAW Components
B4858
Low Loss Filter for Mobile Communication
Data Sheet
85,38 MHz
Ceramic package QCC10B
Features
■ Low-loss IF filter for mobile telephone
■ Channel selection in AMPS/D-AMPS systems
■ Filter surface passivated
■ High stopband attenuation
■ Low insertion loss
■ Balanced or unbalanced operation possible
■ Package for Surface Mounted Technology (SMT)
Terminals
■ Ni, gold plated
Dimensions in mm, approx. weight 0,23 g
Pin configuration
10
Input
5
Output
9
4
Balanced input or input ground
Balanced output or output ground
Case ground
1,3,6,8
2,7
Not connected
Type
Ordering code
Marking and Package
according to
C61157-A7-A49
Packing
according to
F61064-V8035-Z000
B4858
B39860-B4858-Z710
Electrostatic Sensitive Device (ESD)
Maximum ratings
Operable temperature range T
Storage temperature range Tstg
– 30/+ 85
– 40/+ 85
13
˚C
˚C
V
DC voltage
VDC
Ps
Source power
10
dBm
2
Jul 26, 2000
SAW Components
B4858
Low Loss Filter for Mobile Communication
85,38 MHz
Data Sheet
Characteristics
Operating temperature range:
Terminating source impedance:
Terminating load impedance:
T
= -30˚C ... 85˚C
ZS = 1000 Ω || 2600 nH
ZL = 1000 Ω || 2600 nH
min.
typ.
max.
fN
—
85,38
—
MHz
kHz
Nominal frequency
3 dB Bandwidth
+-14
—
—
—
Minimum insertion attenuation
αmin
3,8
5,0 dB
(including losses in the matching network)
Amplitude ripple (p-p)
∆α
fN – 12,0 kHz ... fN + 12,0 kHz
—
—
0,3
3,0
1,5 dB
10,0 µs
3,0 dB
Group delay ripple (p-p)
∆τ
fN – 12,0 kHz ... fN + 12,0 kHz
Relative attenuation (relative to αmin
fN ± 14,0 kHz
)
αrel
—
25
50
55
55
55
0,5
32
fN ± 60,0 kHz ... fN ± 120,0 kHz
fN ± 120,0 kHz ... fN ± 240,0 kHz
fN ± 240,0 kHz ... fN ± 330,0 kHz
fN ± 330,0 kHz ... fN ±1200,0 kHz
fN ±1200,0 kHz ... fN ± 2,5 MHz
—
—
—
—
—
dB
dB
dB
dB
dB
57
65
70
75
Impedance within the passband
Input: ZIN = RIN || CIN
Output: ZOUT = ROUT || COUT
—
—
1000 || 1,4
1000 || 1,4
—
—
Ω || pF
Ω || pF
Temperature coefficient of frequency 1)
Turnover temperature
TCf
T0
—
—
– 0,036
25
—
—
ppm/K2
˚C
1) Temperature dependance of fc: fc(T) = fc(T0)(1 + TCf(T – T0)2)
3
Jul 26, 2000
SAW Components
B4858
Low Loss Filter for Mobile Communication
Data Sheet
85,38 MHz
Test matching networks to 50 Ω (element values depend on pcb layout)
a) Unbalanced - unbalanced matching network
Input: Pin 10
Output: Pin 5
Ls1 = 470 nH
Cp2 = 4,3 pF
Cp3 = 4,3 pF
Ls4 = 470 nH
b) Balanced - balanced matching network
Input: Pins 10 and 9
Output: Pins 5 and 4
Cs1 = 8,2 pF
Cs2 = 8,2 pF
Lp1 = 680 nH
Lp2 = 680 nH
Cs3 = 10 pF
Cs4 = 8,2 pF
Note :
The balanced - balanced network is realized using M/A-COM 1:4 baluns TP-103. The insertion
attenuation of each balun is 0,4 dB at fN. The loss of the baluns is not included in the specified
filter insertion attenuation. S-Parameters of the M/A-COM 1:4 baluns TP-103 are available on re-
quest.
The level of ultimate suppression may be limited by electromagnetic feedthrough depending on
the layout of the pcb and the arrangement of the matching components.
The above mentioned characteristics can be realized either in balanced or in unbalanced mode
of operation.
For more details see our application note PCB Layout for Highly Selective IF Filters.
4
Jul 26, 2000
SAW Components
B4858
Low Loss Filter for Mobile Communication
Data Sheet
85,38 MHz
Normalized transfer function (passband, measured single ended - single ended)
Normalized transfer function (wideband, measured single ended - single ended)
5
Jul 26, 2000
SAW Components
B4858
Low Loss Filter for Mobile Communication
Data Sheet
85,38 MHz
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.
As 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.
The information describes the type of component and shall not be considered as assured
characteristics.
Terms of delivery and rights to change design reserved.
For questions on technology, prices and delivery please contact the sales offices of EPCOS AG or
the international representatives.
Due to technical requirements components may contain dangerous substances. For information on
the type in question please also contact one of our sales offices.
6
Jul 26, 2000
相关型号：
©2020 ICPDF网 联系我们和版权申明