Tel : +44 118 979 1238
Fax : +44 118 979 1283
Email: info@actcrystals.com
The
ACTR316.8/316.8/TO39
is a true one-port, surface-acoustic-wave (SAW) resonator in a
low-profile metal
TO-39
case. It provides reliable, fundamental-mode, quartz frequency
stabilization i.e. in transmitters or local oscillators operating at
316.800
MHz.
1.Package Dimension
(TO-39)
Pin
1
2
3
Dimension
A
B
C
D
E
Configuration
Input / Output
Output / Input
Case Ground
Data (unit: mm)
9.30±0.20
5.08±0.10
3.40±0.20
3±0.20⁄5±0.20
0.45±0.20
3.Equivalent LC Model and Test Circuit
4.Typical Application Circuits
1) Low-Power Transmitter Application
2) Local Oscillator Application
In keeping with our ongoing policy of product evolvement and improvement, the above specification is subject to change without notice.
ISO9001: 2000 Registered - Registration number 6830/2
For quotations or further information please contact us at:
3 The Business Centre, Molly Millars Lane, Wokingham, Berks, RG41 2EY, UK
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5.Typical Frequency Response
6.Temperature Characteristics
7.Performance
7-1.Maximum Ratings
Rating
CW RF Power Dissipation
DC Voltage Between Any Two Pins
Case Temperature
Value
0
±30V
-40 to +85
Units
dBm
VDC
°C
7-2.Electronic Characteristics
Characteristic
Centre Frequency
(+25
°C)
Insertion Loss
Unloaded Q
Quality Factor
50
Ω
Loaded Q
Turnover Temperature
Temperature
Stability
Turnover Frequency
Frequency Temperature Coefficient
Frequency Aging
Absolute Value during the First Year
Absolute Frequency
Tolerance from 316.800MHz
Sym
f
C
∆f
C
IL
Q
U
Q
L
T
0
f
0
FTC
|f
A
|
Minimum
316.725
Typical
Maximum
316.875
Units
MHz
kHz
±75
1.3
13,800
1,900
25
f
C
0.032
≤10
1.0
55
1.8
dB
°C
kHz
ppm/°C
2
ppm/yr
MΩ
DC Insulation Resistance Between Any Two Pins
Motional Resistance
RF Equivalent
RLC Model
Motional Inductance
Motional Capacitance
Pin 1 to Pin 2 Static Capacitance
R
M
L
M
C
M
C
0
16
110.7814
2.2806
2.35
2.65
23
Ω
µH
fF
2.95
pF
In keeping with our ongoing policy of product evolvement and improvement, the above specification is subject to change without notice.
ISO9001: 2000 Registered - Registration number 6830/2
For quotations or further information please contact us at:
3 The Business Centre, Molly Millars Lane, Wokingham, Berks, RG41 2EY, UK
Issue : 1 C1
Date : SEPT 04
http://www.actcrystals.com
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Tel : +44 118 979 1238
Fax : +44 118 979 1283
Email: info@actcrystals.com
i
CAUTION: Electrostatic Sensitive Device. Observe precautions for handling!
1.
2.
3.
4.
5.
6.
7.
8.
9.
The centre frequency, f
C
, is measured at the minimum IL point with the resonator in the 50
Ω
test system.
Unless noted otherwise, case temperature T
C
= +25°C±2°C.
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.
Turnover temperature, T
0
, is the temperature of maximum (or turnover) frequency, f
0
. The nominal frequency at
2
any case temperature, T
C
, may be calculated from: f = f
0
[1 - FTC (T
0
- T
C
) ].
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 (non-motional) capacitance between Pin1 and
Pin2. The measurement includes case parasitic capacitance.
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
.
The specifications of this device are based on the test circuit shown above and subject to change or
obsolescence without notice.
Typically, equipment utilizing this device requires emissions testing and government approval, which is the
responsibility of the equipment manufacturer.
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.
In keeping with our ongoing policy of product evolvement and improvement, the above specification is subject to change without notice.
ISO9001: 2000 Registered - Registration number 6830/2
For quotations or further information please contact us at:
3 The Business Centre, Molly Millars Lane, Wokingham, Berks, RG41 2EY, UK
http://www.actcrystals.com
3 OF 3
Issue : 1 C1
Date : SEPT 04
Power technology
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