
315.00 MHz One-Port SAW Resonator
Phone: +86 10 6301 4184 Fax: +86 10 6301 9167 Email: sales@vanlong.com Web: http://www.vanlong.com
2004 by Vanlong Technology Co., Ltd.
SR315
Ideal for 315.00 MHz Transmitters
Very Low Insertion Loss
Quartz Stability
Rugged, Hermetic, Low Profile TO-39 Package
Absolute Maximum Rating (Ta=25
°
C)
Parameter
Rating
Unit
CW RF Power Dissipation
P
0
dBm
DC Voltage
V
DC
±
30
V
Operating Temperature Range
T
A
-10 ~ +60
°
C
Storage Temperature Range
T
stg
-40 ~ +85
°
C
Electronic Characteristics
Parameter
Sym
Minimum
Typical
Maximum
Unit
Frequency (25
°
C)
Nominal Frequency
Tolerance from 315.00 MHz
f
C
f
C
IL
NS
-
315.00
-
NS
±
75
MHz
KHz
Insertion Loss
-
1.5
2.0
dB
Quality Factor
Unloaded Q-Value
50
Loaded Q-Value
Q
U
Q
L
-
-
12,500
2,000
-
-
-
-
Temperature Stability
Turnover Temperature
Turnover Frequency
Frequency Temperature Coefficient
T
O
f
O
FTC
25
-
-
-
fc
-0.032
55
-
-
°
C
KHz
ppm/
°
C
2
Frequency Aging
Absolute Value during the First Year
|f
A
|
-
-
10
ppm/yr
DC Insulation Resistance Between any Two Pins
-
1.0
-
-
M
RF Equivalent RLC Model
Motional Resistance
Motional Inductance
Motional Capacitance
Pin 1 to Pin 2 Static Capacitance
R
M
L
M
C
M
C
O
-
-
-
2.3
19
120.3114
2.1240
2.6
26
-
-
2.9
μ
H
fF
pF
NS = Not Specified
Notes:
1.
The center frequency,
f
C
, is measured at the minimum IL point with
the resonator in the 50
test system.
2.
Unless noted otherwise, case temperature
T
C
= +25
°
C ± 2
°
C.
3.
Frequency aging is the change in
f
C
with time and is specified at
+65
°
C or less. Aging may exceed the specification for prolonged
temperatures above +65°C. Typically, aging is greatest the first year
after manufacture, decreasing in subsequent years.
4.
Turnover temperature,
T
0
, is the temperature of maximum (or
turnover) frequency,
f
0
. The nominal frequency at any case
temperature, T
C
, may be calculated from:
f
=
f
0
[1 -
FTC
(
T
0
-
T
C
)
2
].
5.
This equivalent RLC model approximates resonator performance
near the resonant frequency and is provided for reference only. The
capacitance
C
0
is the measured static (nonmotional) capacitance
between Pin1 and Pin2. The measurement includes case parasitic
capacitance.
6.
Derived mathematically from one or more of the following directly
measured parameters:
f
C
,
IL
, 3 dB bandwidth,
f
C
versus
T
C
, and
C
0
.
7.
The specifications of this device are based on the test circuit shown
above and subject to change or obsolescence without notice.
8.
Typically, equipment utilizing this device requires emissions testing
and government approval, which is the responsibility of the
equipment manufacturer.
9.
Our liability is only assumed for the Surface Acoustic Wave (SAW)
component(s) per se, not for applications, processes and circuits
implemented within components or assemblies.
10. For questions on technology, prices and delivery please contact our
sales offices or e-mail to sales@vanlong.com.
SR315