433.935 MHz
SAW Resonator
Power Test
Electrical Connections
Pin
1
Connection
The SAW resonator is bidirectional and
may be installed with either orientation.
The two terminals are interchangeable
and unnumbered. The callout NC indi-
cates 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.
NC
Terminal
NC
2
PINCIDENT
Low-Loss
Matching
Network to
3
50
Source
W
2
5
3
4
1
4
NC
Terminal
NC
at FC
6
5
PREFLECTED
50
W
6
Typical Application Circuits
B
C
G
H
Typical Low-Power Transmitter Application
1
2
3
6
5
4
200k
W
+9VDC
Modulation
Input
6
5
4
1
C1
47
L1
A
E
I
2
3
(Antenna)
2
5
3
4
1
6
D
J
C2
ROXXXXC
Bottom View
RF Bypass
470
Typical Local Oscillator Application
Output
200k
W
Case Dimensions
Dimension
+VDC
C1
+VDC
mm
Nom
3.80
3.80
1.20
1.10
2.54
1.0
Inches
Nom
0.15
L1
Min
Max
4.0
Min
Max
0.16
A
B
C
D
E
G
H
I
3.60
3.60
1.00
0.95
2.39
0.90
1.90
0.50
1.70
0.14
0.14
2
5
3
4
1
4.0
0.15
0.16
6
1.40
1.25
2.69
1.10
2.10
0.70
1.90
0.04
0.05
0.055
0.05
C2
ROXXXXC
Bottom View
0.037
0.090
0.035
0.75
0.043
0.10
RF Bypass
0.110
0.043
0.83
0.04
2.0
0.08
Equivalent LC Model
0.6
0.020
0.067
0.024
0.07
0.028
0.075
J
1.8
0.05 pF*
+
C
p
=
C
o
0.05 pF
Typical Test Circuit
C
p
The test circuit inductor, L
, is tuned to resonate with the static
TEST
*Case Parasitics
capacitance, C , at F .
O
C
Electrical Test
Lm
Cm
Rm
Temperature Characteristics
The curve shown on the right accounts for resonator contribution only and
does not include LC component temperature contributions.
fC = fO , T C = TO
6
0
0
1
-50
-50
From 50
Network Analyzer
5
4
To 50
W
W
2
Network Analyzer
-100
-150
-100
-150
-200
3
-200
-80 -60 -40 -20
0
+40 +60 +80
+20
T = T - T ( °C )
D
C
O
RF Monolithics, Inc.
RFM Europe
Phone: (972) 233-2903
Phone: 44 1963 251383
Fax: (972) 387-8148
Fax: 44 1963 251510
E-mail: info@rfm.com
http://www.rfm.com
RO2101D-1-092004
Page 2 of 2
©1999 by RF Monolithics, Inc. The stylized RFM logo are registered trademarks of RF Monolithics, Inc.
RFM [ RF MONOLITHICS, INC ]
