RFM products are now Murata products.

RFM products are now Murata products.
RFM products are now
Murata products.
RO3112D
•
•
•
•
Ideal for European 433.420 MHz Remote Control and Security Transmitters
Very Low Series Resistance
Quartz Stability
Pb
Complies with Directive 2002/95/EC (RoHS)
433.420 MHz
SAW
Resonator
The RO3112D is a true one-port, surface-acoustic-wave (SAW) resonator in a surface-mount ceramic case.
It provides reliable, fundamental-mode, quartz frequency stabilization of fixed-frequency transmitters
operating at 433.420 MHz. This SAW is designed specifically for remote control and wireless security
transmitters operating in Europe under ETSI I-ETS 300 220.
Absolute Maximum Ratings
Rating
Value
Units
0
dBm
12
VDC
Input Power Level
DC Voltage
Storage Temperature
-40 to +85
°C
260
°C
Soldering Temperature (10 seconds / 5 cycles maximum)
SM3838-6 Case
3.8 X 3.8
Electrical Characteristics
Characteristic
Center Frequency, +25 °C
Sym
fC
Absolute Frequency
fC
Tolerance from 433.420 MHz
Insertion Loss
Quality Factor
Temperature Stability
Frequency Aging
IL
2,3,4,5
Minimum
Unloaded Q
QU
50 Loaded Q
QL
Turnover Temperature
TO
Turnover Frequency
fO
Frequency Temperature Coefficient
FTC
|fA|
Maximum
Units
433.495
MHz
±75
kHz
2.5
dB
40
°C
1.2
8400
5,6,7
1000
10
25
fC
6,7,8
Absolute Value during the First Year
Typical
433.345
2,5,6
DC Insulation Resistance between Any Two Terminals
RF Equivalent RLC Model
Notes
ppm/°C2
ppm/yr
0.032
10
1
5
1.0
M
13.7

42.2
µH
3.2
fF
Motional Resistance
RM
Motional Inductance
LM
Motional Capacitance
CM
Shunt Static Capacitance
CO
5, 6, 9
3.7
pF
LTEST
2, 7
36.2
nH
Test Fixture Shunt Inductance
5, 7, 9
Lid Symbolization (in addition to Lot and/or Date Codes)
Standard Reel Quantity
683 // YWWS
Reel Size 7 Inch
500 Pieces/Reel
Reel Size 13 Inch
3000 Pieces/Reel
CAUTION: Electrostatic Sensitive Device. Observe precautions for handling.
NOTES:
1.
2.
3.
4.
5.
6.
Frequency aging is the change in fC 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.
The center frequency, fC, is measured at the minimum insertion loss point,
ILMIN, with the resonator in the 50  test system (VSWR  1.2:1). The
shunt inductance, LTEST, is tuned for parallel resonance with CO at fC.
Typically, fOSCILLATOR or fTRANSMITTER is approximately equal to the
resonator fC.
One or more of the following United States patents apply: 4,454,488 and
4,616,197.
Typically, equipment utilizing this device requires emissions testing and
government approval, which is the responsibility of the equipment
manufacturer.
Unless noted otherwise, case temperature TC = +25 ± 2 °C.
The design, manufacturing process, and specifications of this device are
©2010-2014 by Murata Electronics N.A., Inc.
RO3112D (R) 4/14/14
7.
8.
9.
Page 1 of 2
subject to change without notice.
Derived mathematically from one or more of the following directly
measured parameters: fC, IL, 3 dB bandwidth, fC versus TC, and CO.
Turnover temperature, TO, is the temperature of maximum (or turnover)
frequency, fO. The nominal frequency at any case temperature, TC, may be
calculated from: f = fO [1 - FTC (TO -TC)2]. Typically oscillator TO is
approximately equal to the specified resonator TO.
This equivalent RLC model approximates resonator performance near the
resonant frequency and is provided for reference only. The capacitance CO
is the static (nonmotional) capacitance between the two terminals
measured at low frequency (10 MHz) with a capacitance meter. The
measurement includes parasitic capacitance with "NC” pads unconnected.
Case parasitic capacitance is approximately 0.05 pF. Transducer parallel
capacitance can by calculated as: CP  CO - 0.05 pF.
www.murata.com
Electrical Connections
Pin
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.
B
NC
2
Terminal
3
NC
4
NC
5
NC
6
Terminal
7
NC
8
NC
1
6
1
From 50 
Network Analyzer
G
C
Parameter Test Circuit
Connection
1
5
2
4
3
To 50 
Network Analyzer
Power Test Circuit
H
6
6
A 2
5
E
1
5
2
4
3
50  Source
at F C
I
P INCIDENT
Low-Loss
Matching
Network to
50 
P REFLECTED
1
6
2
3
5
4
4
3
D
J
Example Application Circuits
Typical Low-Power Transmitter Application
Modulation
Input
200k 
+9VDC
C1
47
L1
(Antenna)
1
6
2
3
5
4
C2
ROXXXXC
Bottom View
RF Bypass
470
Typical Local Oscillator Application
Output
200k 
+VDC
C1
+VDC
L1
Case Dimensions
A
B
C
D
E
G
H
I
J
mm
Nom
3.80
3.80
1.30
1.10
2.54
1.00
2.00
0.60
1.80
Min
3.60
3.60
1.10
0.95
2.39
0.90
1.90
0.50
1.70
Max
4.00
4.00
1.50
1.25
2.69
1.10
2.10
0.70
1.90
Min
0.142
0.142
0.043
0.037
0.094
0.035
0.748
0.020
0.067
Inches
Nom
0.150
0.150
0.050
0.043
0.100
0.040
0.079
0.024
0.071
6
Max
0.157
0.157
0.060
0.049
0.106
0.043
0.083
0.028
0.075
Lm
4
RF Bypass
The curve shown on the right accounts for resonator contribution only and
does not include LC component temperature contributions.
Co = Cp + 0.05 pF
fC = f O , T C = T O
0
0
-50
-50
-100
-100
-150
-150
-200
-80 -60 -40 -20
*Case Parasitics
-200
0 +20 +40 +60 +80
T = TC - T O ( °C )
Cm
©2010-2014 by Murata Electronics N.A., Inc.
RO3112D (R) 4/14/14
5
Temperature Characteristics
0.05 pF*
Rm
3
C2
Equivalent RLC Model
Cp
2
ROXXXXC
Bottom View
(f-fo ) / fo (ppm)
Dimension
1
Page 2 of 2
www.murata.com
Mouser Electronics
Authorized Distributor
Click to View Pricing, Inventory, Delivery & Lifecycle Information:
Murata:
RO3112D
Was this manual useful for you? yes no
Thank you for your participation!

* Your assessment is very important for improving the work of artificial intelligence, which forms the content of this project

Download PDF

advertisement