LEADED, TO -39 PACKAGE
SAW RESONATORS
ASR314.5
FEATURES:
• One-port SAW resonator 314.5 MHz. Fundamental mode.
• Wide operating temperature range.
0.366±0.008
(9.30±0.20)
0.14±0.008
(3.40±0.20)
0.018±0.008
(0.45±0.20)
9.8 x 9.8 x 3.6 mm
COMMON APPLICATIONS:
• Quartz frequency stabilization of fixed-frequency transmitters at 314.5 MHz.
• Wireless car alarm, Garage door opener. (RKE)
0.12 min.
• Mobile communications systems
(3.0)
ABLSOLUTE MAXIMUM RATINGS:
DC voltage
Operating temperature
Maximum power dissipation
± 30 Vdc
-40 °C to +85°C
10dBm
0.1
(2.54)
STANDARD SPECIFICATIONS
CHARACTERISTICS
UNIT
min.
314.425
-
-
-
-
-
1.0
-
-
-
-
25
-
typ.
314.5
±75
1.5
12,500
2,000
-
-
2.25
19
120.503
2.1274
40
0.037
max.
314.575
-
2.0
-
-
10
-
-
26
-
-
55
-
0.2
(5.08)
Dimensions: Inches (mm)
Center frequency
Fr
MHz
Tolerance from 314.5
MHz
∆f
C
kHz
Insertion loss
IL
dB
Unloaded quality factor
Q
U
-
loaded quality factor 50Ω Q
L
-
Aging absolute first year [A]
ppm
DC insulation resistance
MΩ
Shunt capacitance
Co
pF
Motional resistance
R1
Ω
Motional inductance
L1
µH
Motional capacitance
C1
fF
Turnover temperature
To
°
C
Temperature coefficient
T
C
ppm/C
2
Reliability specifications, See SAW application notes
Pin No. Function
1
Input/Output
2
Output/Input
3
Case GND
1
Equivalent circuit:
Cp
2
From 50 ohms
source
0.5pF*
Rm
Lm
Cm
To 50 ohms
load
0.5pF*
Co=Cp+0.25pF*
* Case Parasitics
Typical Frequency Response
1:Transmssion /M Log Mag 5.0 dB/ Ref -1.50 dB
2: Off
CH1 MKR1 314.496 MHz
-1.21 dB
Temperature Characteristics
fc=fo, Tc=To
0
-50
-100
-150
0
-50
-100
-150
-200
CH1
-200
1
T=Tc-To(
o
C)
Test circuit:
-80 -60 -40 -20
0
+20 +40 +60 +80
Center 314.500 MHz,
Span
0.008 MHz
Marking:
ASR
314.5
ABRACON IS
ISO 9001 / QS 9000
CERTIFIED
NOTE: All specifications and markings subject to change without notice
ABRACON
29 Journey • Aliso Viejo, CA 92656 • USA
(949) 448-7070
•
F
AX
: (949) 448-8484
E-
MAIL
:
abinfo
@
abracon.com •
I
NTERNET
A
DDRESS
:
www.abracon.com
®
C O R P O R A T I O N
S17
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