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2008 by RF Monolithics, Inc.
RO2166E - 3/26/08
-80 -60 -40 -20
0 +20 +40 +60
0
-50
-100
-150
+80
-200
0
-50
-100
-150
-200
f
C = f O , T C = T O
ΔT = T
C - T O ( °C )
(f
-f
o
) /
f
(ppm
)
0.05 pF*
0.05 pF
Cp
Co
+
=
*Case Parasitics
Cp
Rm
Lm
Cm
Equivalent LC Model
Temperature Characteristics
The curve shown on the right accounts for resonator contribution only and
does not include LC component temperature contributions.
Pin
Connection
1NC
2
Terminal
3NC
4NC
5
Terminal
6NC
Power Test
Electrical Connections
The SAW resonator is bidirectional and
may be installed with either orientation.
The two terminals are interchangeable
and unnumbered. The callout NC
indicates no internal connection. The NC
pads assist with mechanical positioning
and stability. External grounding of the NC
pads is recommended to help reduce
parasitic capacitance in the circuit.
Typical Test Circuit
The test circuit inductor, LTEST, is tuned to resonate with the static
capacitance, CO, at FC.
Electrical Test
Typical Application Circuits
From 50
Ω
Network Analyzer
To 50
Ω
Network Analyzer
2
3
6
5
4
1
Low-Loss
Matching
Network to
50
Ω
50
Ω Source
at F
C
P
INCIDENT
P
REFLECTED
2
3
6
5
4
1
Modulation
Input
ROXXXXC
Bottom View
200k
Ω
C1
L1
(Antenna)
47
+9VDC
C2
RF Bypass
470
Typical Low-Power Transmitter Application
2
3
6
5
4
1
+VDC
ROXXXXC
Bottom View
200k
Ω
C1
L1
+VDC
C2
RF Bypass
Typical Local Oscillator Application
Output
2
3
6
5
4
1
2
3
6
5
4
1
2
3
6
5
4
A
BC
D
J
EF
GH
I
Case Dimensions
Dimension
mm
Inches
Min
Nom
Max
Min
Nom
Max
A
2.87
3.0
3.13
0.113
0.118
0.123
B
2.87
3.0
3.13
0.113
0.118
0.123
C
1.12
1.25
1.38
0.044
0.049
0.054
D
0.77
0.90
1.03
0.030
0.035
0.040
E
2.67
2.80
2.93
0.105
0.110
0.115
F
1.47
1.6
1.73
0.058
0.063
0.068
G
0.72
0.85
0.98
0.028
0.033
0.038
H
1.37
1.5
1.63
0.054
0.059
0.064
I
0.47
0.60
0.73
0.019
0.024
0.029
J
1.17
1.30
1.43
0.046
0.051
0.056