Including losses in matching test circuit shown below
Minimum
-
-
-
-
-
35
26
5
5
26
35
42
42
-
-
-
-
-
Typical
225
2.3
3.5
0.5
0.3
45
32
11
13
30
39
45
45
0.9
0.6
0.2
704Ω||332nH
739Ω||359nH
Maximum
-
3.8
5.0
3.2
2.2
-
-
-
-
-
-
-
-
1.8
1.6
1.3
-
-
Unit
MHz
dB
dB
dB p-p
dB p-p
MHz
MHz
MHz
MHz
MHz
MHz
dB
dB
µsec
µsec
µsec
Ω
Ω
Amplitude Variation
224.9200 - 225.0800 MHz
224.9325 - 225.0675 MHz
Rejection
(4)
223 - 224.4 MHz
224.4 - 224.6 MHz
224.6 - 224.8 MHz
225.2 - 225.4 MHz
225.4 - 225.6 MHz
225.6 - 227.0 MHz
Out of Band Rejection
10 - 215 MHz
235 - 750 MHz
Group Delay Ripple
224.9200 - 225.0800 MHz
224.9325 - 225.0675 MHz
224.9500 - 225.0500 MHz
Optimal Source Impedance:
(5)
Optimal Load Impedance:
(5)
Notes:
1.
2.
3.
4.
5.
All specifications are based on the test circuit shown below
In production, devices will be tested at room temperature to a guardbanded specification to ensure electrical compliance over
temperature
Electrical margin has been built into the design to account for the variations due to manufacturing tolerances
Relative to insertion loss at 225 MHz
This is the complex conjugate of the unmatched filter’s impedance resulting in maximum power transfer
Test Circuit:
7pF
2
5
82nH
1
7pF
3,4,7,8
6
7pF
50Ω
7pF
50Ω
Balanced
50Ω
82nH
Subject to change or obsolescence without notice
Rev B
13-Oct-2005
Page 2 of 5
Data Sheet
Part Number 855844
225 MHz SAW Filter
Typical Performance
(at +25
o
C)
Subject to change or obsolescence without notice
Rev B
13-Oct-2005
Page 3 of 5
Data Sheet
Actual matching values may vary due to PCB layout and parasitics
7pF
2
5
82nH
1
7pF
3,4,7,8
6
Part Number 855844
225 MHz SAW Filter
Matching Schematics
7pF
50Ω
Balanced
50Ω
82nH
50Ω
7pF
Marking
2.28
Sawtek
logo
Marking
code
PCB Footprint
5.20
1.47
C
JJJYM
.84
.71
ID dot
Date code
.43
.84
1.47
The date code consists of: JJJ = Julian day,
Y = last digit of year, M = manufacturing site code
This footprint represents a recommendation only
Dimensions shown are nominal in millimeters
Tape and Reel
2.7
12.8
Ø330
Sawtek
logo
0.3
2.0
4.0
Ø1.5
A
1.75
5.5
5.25
1.8
Section A-A
5.25
8.0
Ø1.5
A
ID dot
Ø102
Direction of travel
12.0
Ø20.2
Ø13.0
2.0
Dimensions shown are nominal in millimeters
Packaging quantity: 4000 units/reel
Subject to change or obsolescence without notice
Rev B
13-Oct-2005
Page 4 of 5
Data Sheet
Maximum Ratings
Parameter
Operating Temperature Range
Storage Temperature Range
Part Number 855844
225 MHz SAW Filter
Symbol
T
T
stg
Minimum
-20
-40
Maximum
+70
+85
Unit
o
o
C
C
Important Notes
Warnings
•
•
•
•
Electrostatic Sensitive Device (ESD)
Avoid ultrasonic exposure
RoHS Compliance
This product complies with EU directive 2002/95/EC (RoHS)
Pb
Solderability
Compatible with JEDEC J-STD-020C
Pb-free
process,
260°C
peak reflow temperature
(see
soldering profile)
Links to Additional Technical Information
PCB Layout Tips
S-Parameters
Qualification Flowchart
RoHS Information
Soldering Profile
Other Technical Information
Sawtek’s liability is limited only to the Surface Acoustic Wave (SAW) component(s) described in this data sheet. Sawtek does not accept any liability for
applications, processes, circuits or assemblies, which are implemented using any Sawtek component described in this data sheet.
A power supply circuit as shown in the figure
If R1=R2, then after the follower U1, the output is 6V, and the transistor V1 is turned on.
So what is the potential of the transistor emitter e?
Is it 6-...
[i=s]This post was last edited by qwqwqw2088 on 2019-8-19 08:33[/i]This is a power supply with a wide input voltage of 120-277V 60HZ, an output of 48V, 273mA, and a Buck topology.Note: In the initial ...
"Principles and Applications of Relay Protection in Power Systems" first introduces the basic concepts of conventional protection and microcomputer protection in power system relay protection, and the...
Aren't all charging piles AC-DC, and then charge electric vehicles? Why are there DC charging piles? -----------A DC charging pile is a charging pile where the battery pack charges the battery pack of...
[size=4]Share this with everyone... [/size] [size=4] [/size] [size=4] When you install IAR For ARM, you may encounter the following situation: everything from entering the registration code to install...
CubeWB provides a lot of examples that can be used directly in the software development environment. It supports three IDEs - IAR EWARM, MDK-ARM and SW4STM32. The latter uses the GCC compiler. I don't...
Current-sense amplifiers are mature ICs widely used in electronic devices to monitor load current in real time. The system controller performs power management operations based on load informa...[Details]
According to Weibo blogger @鹏鹏君驾到, Huawei is likely to release a new generation of TWS true wireless Bluetooth headsets at the autumn new product launch conference to iterate the FreeBuds 3 pr...[Details]
According to Jiwei.com on March 18, Meizu Technology’s official Weibo account announced a good news earlier, that is, the Meizu 18 series will open 2K+120 frame dual-opening mode through OTA. Now Wan...[Details]
The basic principles and functions of any MCU are similar, and the only difference is the configuration and number of its peripheral function modules, instruction system, etc. For the instruction sys...[Details]
Since publicly announcing its entry into the mobile phone field, Gree has been upholding Dong Mingzhu's spirit and attitude of "fighting to the end", which has attracted more attention and ar...[Details]
For information about SPI protocol, see: http://hi.baidu.com/gilbertjuly/blog/item/0be222eeac9abae5cf1b3e38.html For
ISD4002 chip data, see: http://download.csdn.net/source/1208805
The foll...[Details]
According to South Korean media TheElec, Samsung is expected to purchase 6.5 million smartphone OLED panels from domestic display panel manufacturers BOE and CSOT this year. That would be about eigh...[Details]
Tektronix oscilloscope DPO70604C cannot be turned on. Antai maintenance detected that the power module was actually damaged. In this issue, we will share this maintenance case with you. Tektronix ...[Details]
Providing floating power for disconnect switch applications
Provides high voltage and high current to drive standard MOSFET/IGBT in different industries
Beijing, China, No...[Details]
Recently, Super Fusion Technology Co., Ltd. (hereinafter referred to as "Super Fusion"), which is wholly owned by Huawei Technologies Co., Ltd., was registered and established. According to Jiwei.com...[Details]
Since the LCR tester has different models, its connection method will also be different. Here we sort out the characteristics of the five connection methods. Generally speaking, the more complicated ...[Details]
Figure 9 shows the organization of the ATmega32 SRAM space. The first 2144 bytes of data memory include the register file, I/O memory, and internal data SRAM. The first 96 addresses are for the reg...[Details]
The report predicts that the NB-IoT chip market size will be US$272 million in 2019, and in the next five years, the market size will exceed US$2 billion, reaching US$2.002 billion in 2024, with a co...[Details]
At present, the speed of updating and replacing of various communication products is very fast. The quality and function of products are the foundation for the survival of products. For a product ...[Details]
Soft start and star-delta start are two different motor starting methods, which have different effects on the motor current and torque during the starting process.
The difference in start...[Details]
Analog electronics
京公网安备 11010802033920号
EEWORLD
