B3577 [EPCOS]
SAW Components Low-loss Filter 311,06 MHz; 声表面波元件低损耗滤波器311,06兆赫
| 型号： | B3577 |
| 厂家： | 
EPCOS |
| 描述： | SAW Components Low-loss Filter 311,06 MHz |
| 文件： | 总6页 (文件大小：75K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
SAW Components
Data Sheet B3577
SAW Components
Low-loss Filter
Data Sheet
B3577
311,06 MHz
Ceramic package QCC8C
Features
■ RF low-loss filter for remote control receivers
■ Package for Surface Mounted Technology
(SMT)
■ Balanced and unbalanced operation possible
■ Passivation layer: Protec
■ AEC-Q200 qualified component family
■ Compliant to EU RoHs Directive (2002/95/EC)
■ Lead free soldering compatible with J - STD20C
Terminals
typ. dimensions in mm, approx. weight 0,1 g
■ Ni, gold plated
Pin configuration
1
2
Input Ground
Input
5
Output
6
4,8
Output Ground
Case - Ground
3,7
to be grounded
Type
B3577
Ordering code
Marking and package
according to
Packing
according to
B39311-B3577-U310
C61157-A7-A56
F61074-V8169-Z000
Electrostactic Sensitive Device (ESD)
Maximum ratings
Operable temperature range TA
Storage temperature range Tstg
–45/+120
˚C
˚C
–45/+120
DC voltage
VDC
PS
0
V
Source power
10
dBm
source impedance 50 Ω
2
Sep 09, 2005
SAW Components
Low-loss Filter
Data Sheet
B3577
311,06 MHz
Characteristics
Reference temperature:
TA = -40 ... 95 ˚C
Terminating source impedance:
Terminating load impedance:
ZS = 50 Ω and matching network
ZL = 50 Ω and matching network
min.
typ.
max.
fC
—
311,06
—
MHz
Center frequency
(center frequency between 3 dB points)
Minimum insertion attenuation
αmin
310,94 ... 311,18 MHz
—
2,0
3,0 dB
Pass band (relative to αmin
)
310,94 ... 311,18 MHz
310,91 ... 311,21 MHz
—
—
1,0
2,0
2,0 dB
3,0 dB
Relative attenuation (relative to αmin
)
αrel
10,00 ... 290,00 MHz
290,00 ... 306,00 MHz
306,00 ... 310,10 MHz
312,00 ... 313,50 MHz
320,00 ... 396,00 MHz
550,00 ...1000,00 MHz
40
35
20
15
35
45
45
40
26
21
40
60
—
dB
dB
dB
dB
dB
dB
—
—
—
—
—
Impedance for pass band matching
Input: ZIN = RIN || CIN
Output: ZOUT = ROUT || COUT
—
—
353 || 3,30
343 || 3,30
—
—
Ω || pF
Ω || pF
Temperature coefficient of frequency 1)
Frequency inversion point
TCf
T0
—
–0,03
—
—
ppm/K2
10
30
°C
1)Temperature dependence of fC: fC(TA) = fC(T0) (1 + TCf(TA – T0)2)
3
Sep 09, 2005
SAW Components
Low-loss Filter
Data Sheet
B3577
311,06 MHz
Matching network to 50 Ω (element values depend on pcb layout and equivalent circuit)
Ls1 = 56 nH
Ls2 = 56 nH
Minimising the crosstalk
For a good ultimate rejection a low crosstalk is necessary. Low crosstalk can be realised with
a good RF layout. The major crosstalk mechanism is caused by the “ground-loop” problem.
Grounding loops are created if input-and output transducer GND are connected on the top-side
of the PCB and fed to the system grounding plane by a common via hole. To avoid the common
ground path, the ground pin of the input- and output transducer are fed to the system ground
plane (bottom PCB plane) by their own via hole. The transducers’ grounding pins should be
isolated from the upper grounding plane.
A common GND inductivity of 0.5nH degrades the ultimate rejection (crosstalk) by 20dB.
The optimised PCB layout, including matching network for transformation to 50 Ohm, is shown
here. In this PCB layout the grounding loops are minimised to realise good ultimate rejection.
Optimised PCB layout for SAW filters in QCC8C package, pinning 2,5 (top side, scale 1:1)
The bottom side is a copper plane (system ground area). The input and output grounding pins
are isolated and connected to the common ground by separated via holes.
For good contact of the upper grounding area with the lower side it is necessary to place
enough via holes.
4
Sep 09, 2005
SAW Components
Low-loss Filter
Data Sheet
B3577
311,06 MHz
Normalized frequency response
Normalized frequency response (wideband)
5
Sep 09, 2005
SAW Components
Low-loss Filter
Data Sheet
B3577
311,06 MHz
Published by EPCOS AG
Surface Acoustic Wave Components Division, SAW CE AE PD
P.O. Box 80 17 09, D-81617 München
of this bro-
dissemination
publication and
Reserved. Reproduction,
2005. All Rights
EPCOS AG
chure and the information contained therein without EPCOS’ prior express consent is prohibited.
be con-
and shall not
type of component
describes the
this brochure
contained in
The information
r
Conditions fo
Industry recommended
the General
are subject to
and Electronics
Purchase orders
of the Electrical
characteristics.
and Services
sidered as guaranteed
the Supply of Products
by the
ZVEI (German Electrical and Electronic Manufacturers’ Association), unless otherwise agreed.
This brochure replaces the previous edition.
or
of EPCOS AG
the Sales Offices
please contact
prices and delivery
on technology,
For questions
the international Representatives.
on
For information
substances.
contain dangerous
components may
requirements
Due to technical
the type in question please also contact one of our Sales Offices.
6
Sep 09, 2005
相关型号：
©2020 ICPDF网 联系我们和版权申明