857142
1227.6 MHz SAW Filter
Applications
For GPS applications
Product Features
High attenuation
Usable bandwidth 20.46 MHz
Single-ended operation
Ceramic chip-scale Package (CSP)
Small Size: 1.40 x 1.20 x 0.46 mm
Hermetically Sealed
RoHS
compliant,
Pb-free
Functional Block Diagram
Top view
Gnd
Output
5
Input
1
2
4
3
Gnd
Gnd
General Description
857142 is specifically designed for GPS applications.
857142 uses advanced and inexpensive packaging
techniques to achieve an extremely small 1.40 x 1.20 x 0.46
mm hermetically sealed package.
Pin Configuration
Pin # Balanced
1
4
2,3,5
Description
Input
Output
Ground
Ordering Information
Part No.
857142
857142-EVB
Description
packaged part
evaluation board
Standard T/R size = 10000 units/reel.
Preliminary Data Sheet: Rev A 8/21/12
© 2012 TriQuint Semiconductor, Inc.
- 1 of 6 -
Disclaimer: Subject to change without notice e
Connecting the Digital World to the Global Network
®
857142
1227.6 MHz SAW Filter
Specifications
Electrical Specifications
(1)
Specified Temperature Range:
(2)
-55 to +85 ºC
Parameter
(3)
Center Frequency
Maximum Insertion Loss
Lower 4.5dB Bandedge
Upper 4.5dB Bandedge
Lower 21dB Bandedge
Upper 21dB Bandedge
Amplitude Variation
Relative Attenuation
(5)
Conditions
1226.4 – 1228.8 MHz
Min
-
-
-
1237.83
1177.6
-
-
20
21
21
20
10
10
-
-
Typical
(4)
1227.6
2.1
1204.92
1244.64
1199.47
1255.87
0.09
39.2
33.3
33.3
37.4
14.0
14.1
50
50
Max
-
3.5
1217.37
-
-
1277.6
0.2
-
-
-
-
-
-
-
-
Units
MHz
dB
MHZ
MHZ
MHZ
MHZ
dB p-p
dB
dB
dB
dB
dB
dB
Input Return Loss
Output Return Loss
Source Impedance (Single-ended)
(6)
Load Impedance (Single-ended)
(6)
1226.4 – 1228.8 MHz
464 – 600 MHz
1150 – 1177.6 MHz
1277.6 – 1300 MHz
1360 – 1820 MHz
1226.4 – 1228.8 MHz
1226.4 – 1228.8 MHz
Notes:
1. All specifications are based on the TriQuint schematic for the main reference design shown on page 3
2. In production, devices will be tested at room temperature to a guardbanded specification to ensure electrical compliance over
temperature
3. Electrical margin has been built into the design to account for the variations due to temperature drift and manufacturing tolerances
4. Typical values are based on average measurements at room temperature
5. Relative to zero dB.
6. This is the optimum impedance in order to achieve the performance shown
Absolute Maximum Ratings
Parameter
Operating Temperature
Storage Temperature
Input Power
(8)
7.
8.
(7)
Rating
-55 to +85
o
C
-55 to +85
o
C
+15 dBm
Device may operate over this range with degraded Electrical Specifications
Device is measured for equivalent 10K hours @ +85
ºC
[CW Signal]
Operation of this device outside the parameter ranges given above may cause permanent damage.
Preliminary Data Sheet: Rev A 8/21/12
© 2012 TriQuint Semiconductor, Inc.
- 2 of 6 -
Disclaimer: Subject to change without notice e
Connecting the Digital World to the Global Network
®
857142
1227.6 MHz SAW Filter
Reference Design
Schematic
1
4
50
Single-ended
Input
50
2,3,5
50
50
Single-ended
Output
Notes:
1.
Actual matching values may vary due to PCB layout and parasitic
PC Board
960568
Mounting Configuration
1.35
0.15
0.15
JJ
WWY
1.00
0.425
0.35
Notes:
Top, middle & bottom layers: 1 oz copper
Substrates: FR4 dielectric, .031” thick
Finish plating: Nickel: 3-8µm thick, Gold: .03-.2µm thick
Hole plating: Copper min .0008µm thick
Notes:
1.
All dimensions are in millimeters.
2.
This footprint represents a recommendation only.
Bill of Material
Reference Desg.
SMA
PCB
Value
N/A
N/A
Description
SMA connector
3-layer
Manufacturer
Radiall USA Inc.
multiple
Part Number
9602-1111-018
960568
Preliminary Data Sheet: Rev A 8/21/12
© 2012 TriQuint Semiconductor, Inc.
- 3 of 6 -
Disclaimer: Subject to change without notice e
Connecting the Digital World to the Global Network
®
857142
1227.6 MHz SAW Filter
Typical Performance
(at room temperature)
Preliminary Data Sheet: Rev A 8/21/12
© 2012 TriQuint Semiconductor, Inc.
- 4 of 6 -
Disclaimer: Subject to change without notice e
Connecting the Digital World to the Global Network
®
857142
1227.6 MHz SAW Filter
Mechanical Information
Package Information, Dimensions and Marking
Marking
code
Package Style: CSP-5BT
Dimensions: 1.40 x 1.20 x 0.46 mm
ID dot
JJ
WWY
Date code
Body:
Al
2
O
3
ceramic
Lid:
Kovar
or
Alloy 42, Au
over
Ni
plated
Terminations:
Au
plating 0.5 - 1.0μm, over a 2-6μm
Ni
plating
All dimensions shown are nominal in millimeters
All tolerances are ±0.15mm except overall length and width
±0.10mm
0.46 NOM.
0.50 MAX.
1.40
1.25
0.50
The date code consists of: WW = 2 digit week and Y = last
digit of year
1.20 0.325
0.25
0.90
0.25
Tape and Reel Information
Standard T/R size = 10000 units/reel. All dimensions are in millimeters
2.7
8.8
Ø330
ID dot
Section A-A
0.3
2.0
4.0
Ø1.5
A
1.75
Ø102 Ø20.2
Ø13.0
Direction of travel
2.0
1.73
0.65
1.47
4.0
Ø1.0
A
3.5 8.0
Preliminary Data Sheet: Rev A 8/21/12
© 2012 TriQuint Semiconductor, Inc.
- 5 of 6 -
Disclaimer: Subject to change without notice e
Connecting the Digital World to the Global Network
®
