The RS TO39-3 Series of Two-Port SAW Resonators
Electrical Connections
Either pin 1 or pin 2 may be used for input or output with
these bidirectional, two-port, three-terminal, SAW
resonators. However, impedances and circuit board
parasitics may not be symmetrical, requiring slightly
different oscillator component values for different resonator
connections.
Pin
1
2
3
Connection
Input or Output
Output or Input
Case Ground
Bottom View
Pin 1
Pin 2
Pin 3
Temperature Characteristics
( f - f
O
) / f
O
( ppm )
The curve shown on
the right accounts
for resonator contri-
bu tio n o nl y a nd
does not include os-
cillator temperature
characteristics.
f
C
= f
O
, T
C
= T
O
0
-50
-100
-150
0
-50
-100
-150
-200
-200
-80 -60 -40 -20 0 +20 +40 +60 +80
D
T = T
C
- T
O
( °C )
Case Design
C
B
H
F
A
D
(3 places)
J
(2 places)
E
G
Typical Test Circuit
The test circuit inductor, L
TEST
, is used to resonate with
the static capacitance, C
O
(which is measured at low
frequency with a capacitance meter).
45°
Typical Application Circuits
The following circuit illustrates a basic oscillator topology.
This resonator is suitable for oscillator designs requiring 0°
phase shift at resonance in a two-port configuration.
1
2
3
Phasing
& Match
Phasing
& Match
Dimension
A
B
C
D
E
F
G
H
J
Millimeters
9.30
3.18
2.50
3.50
0.46 Nominal
5.08 Nominal
2.54 Nominal
2.54 Nominal
1.02
1.40
Inches
0.366
0.125
0.098
0.138
0.018 Nominal
0.200 Nominal
0.100 Nominal
0.100 Nominal
0.040
0.055
Minimum Maximum Minimum Maximum
Equivalent LC Model
The following equivalent LC model is valid near resonance:
1
Rm Lm Cm
2
Co
Co
3
1-98
®
RS1032-1
•
•
•
•
Designed for 674.0 MHz CATV Converter LOs
Nominal Insertion Phase Shift of 0° at Resonance
Quartz Stability
Rugged, Hermetic, Low-Profile TO39 Case
The RS1032-1 is a two-port surface-acoustic-wave (SAW) resonator in a low-profile
TO39 case. It provides reliable, fundamental-mode, quartz frequency stabilization of
fixed-frequency oscillators operating at or near 674 MHz. Typical applications include
the second LO in CATV set-top convertors with channel 3 output.
674.03 MHz
SAW
Resonator
Absolute Maximum Ratings
Rating
CW RF Power Dissipation (See: Typical Test Circuit.)
DC Voltage between Any Two Pins (Observe ESD Precautions.)
Case Temperature
1
Value
+
5
±
30
−40
to
+85
Units
dBm
VDC
°C
TO39-3 Case
Electrical Characteristics
Characteristic
Center Frequency (+25°C) Absolute Frequency
Tolerance from 674.030 MHz
Insertion Loss
Quality Factor
Unloaded Q
50
Ω
Loaded Q
Temperature Stability
Turnover Temperature
Turnover Frequency
Frequency Temperature Coefficient
Frequency Aging
Absolute Value during the First Year
DC Insulation Resistance between Any Two Pins
RF Equivalent RLC Model Motional Resistance
Motional Inductance
Motional Capacitance
Shunt Static Capacitance
Lid Symbolization (in Addition to Lot and/or Date Codes)
Sym
f
C
∆f
C
IL
Q
U
Q
L
T
O
f
O
FTC
|f
A
|
R
M
L
M
C
M
C
O
Notes
2, 3, 4, 5
2, 5, 6
5, 6, 7
55
6, 7, 8
6
5
5, 7, 9
5, 6, 9
1.3
Minimum
673.930
Typical
Maximum
674.130
±100
12.5
Units
MHz
kHz
dB
8.3
9,500
5,900
70
f
C
+50
0.037
≤
10
160
360.609
0.154613
1.6
RFM 1032-1
85
1.0
322
1.9
°C
kHz
ppm/°C
2
ppm/yr
MΩ
Ω
µH
fF
pF
CAUTION: Electrostatic Sensitive Device. Observe precautions for handling.
NOTES:
1. 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.
2. The frequency f
C
is the frequency of minimum IL with the resonator in the specified test fixture in a 50
Ω
test system with VSWR
≤
1.2:1.
Typically, f
OSCILLATOR
or f
TRANSMITTER
is less than the resonator f
C
.
3. One or more of the following United States patents apply: 4,454,488; 4,616,197.
4. Typically, equipment utilizing this device requires emissions testing and government approval, which is the responsibility of the equipment manufacturer.
5. Unless noted otherwise, case temperature T
C
=
+
25°C
±
2°C.
6. The design, manufacturing process, and specifications of this device are subject to change without notice.
7. 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
O
.
8. Turnover temperature, T
O
, is the temperature of maximum (or turnover) frequency, f
O
. The nominal frequency at any case temperature, T
C
, may be calculated
from: f = f
O
[ 1 – FTC ( T
O
– T
C
)
2
]. Typically,
oscillator
T
O
is 20° less than the specified
resonator
T
O
.
9. This equivalent RLC model approximates resonator performance near the resonant frequency and is provided for reference only. The capacitance C
O
is the
measured static (nonmotional) capacitance between either pin 1 and ground or pin 2 and ground. The measurement includes case parasitic capacitance.
1-99
stm32/stm8
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