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RO3101A-20

Description
1-Port Saw Resonator,
CategoryPassive components    Crystal/resonator   
File Size266KB,2 Pages
ManufacturerMurata
Websitehttps://www.murata.com
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RO3101A-20 Overview

1-Port Saw Resonator,

RO3101A-20 Parametric

Parameter NameAttribute value
MakerMurata
Reach Compliance Codeunknown
Factory Lead Time20 weeks
Other featuresTR
Crystal/Resonator Type1-PORT
frequency stability0.0115%
Frequency tolerance(MHz)0.075
Insertion loss2.2 dB
Installation featuresSURFACE MOUNT
Nominal operating frequency433.92 MHz
Maximum operating temperature85 °C
Minimum operating temperature-40 °C
Parallel capacitor2.35 pF
physical sizeL5.13XB3.63XH1.6 (mm)/L0.202XB0.143XH0.063 (inch)
surface mountYES

RO3101A-20 Preview

RoHS Compliance
This component is compliant
with RoHS directive.
This component was always
RoHS compliant from the first
date of manufacture.
Ideal for European 433.92 MHz Transmitters
Very Low Series Resistance
Quartz Stability
Surface-Mount Ceramic Case
Passivation for Enhanced Reliability
RO3101A-20
433.92 MHz
SAW Resonator
The RO3101A-20 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 433.92 MHz. This SAW is designed specifically for remote-control and wireless security
transmitters operating in Europe under ETSI I-ETS 300 220 and in Germany under FTZ 17 TR 2100.
Absolute Maximum Ratings
Rating
CW RF Power Dissipation (See: Typical Test Circuit)
DC voltage Between Terminals (Observe ESD Precautions)
Case Temperature
Soldering Temperature (10 seconds / 5 cycles max.)
Characteristic
Center Frequency (+25 °C)
Insertion Loss
Quality Factor
Temperature Stability
Unloaded Q
50
Loaded
Q
Turnover Temperature
Turnover Frequency
Frequency Temperature Coefficient
Frequency Aging
RF Equivalent RLC Model
Absolute Value during the First Year
Motional Resistance
Motional Inductance
Motional Capacitance
Shunt Static Capacitance
Test Fixture Shunt Inductance
Lid Symbolization (in addition to Lot and/or Date Codes)
DC Insulation Resistance between Any Two Terminals
R
M
L
M
C
M
C
O
L
TEST
5, 6, 9
2, 7
5, 7, 9
Sym
f
C
f
C
IL
Q
U
Q
L
T
O
f
O
FTC
|f
A
|
1
5
1.0
19.4
63.8
2.11
2.4
55.1
778 // YWWS
6,7,8
Value
+0
±30
-40 to +85
260
Notes
2,3,4,5
2,5,6
5,6,7
10
Units
dBm
VDC
°C
°C
Minimum
433.845
Typical
Maximum
433.995
±75
1.5
9000
1458
25
f
C
0.032
10
ppm/°C
2
ppm/yr
M
µH
fF
pF
nH
40
°C
2.2
Units
MHz
kHz
dB
SM5035-4
Absolute Frequency
Tolerance from 433.920 MHz
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.
The center frequency, f
C
, is measured at the minimum insertion loss point, IL
MIN
,
with the resonator in the 50
test system (VSWR
1.2:1). The shunt
inductance, L
TEST
, is tuned for parallel resonance with C
O
at f
C
. Typically,
f
OSCILLATOR
or f
TRANSMITTER
is approximately equal to the resonator f
C
.
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 T
C
= +25°C±2°C.
The design, manufacturing process, and specifications of this device are subject
to change without notice.
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
2.
9.
3.
4.
5.
6.
7.
10.
calculated from: f = f
O
[1 - FTC (T
O
-T
C
)
2
]. Typically
oscillator
T
O
is
approximately equal to the specified
resonator
T
O
.
This equivalent RLC model approximates resonator performance near the
resonant frequency and is provided for reference only. The capacitance C
O
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:
C
P
C
O
- 0.05 pF.
Tape and Reel standard per ANSI / EIA 481.
Copyright © Murata Manufacturing Co., Ltd. All rights reserved. 2007
RO3101A-20 (R) 4/11/19
Page 1 of 2
www.murata.com
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.
Terminal
Case Ground
Case Ground
Typical Local Oscillator Applications
Output
+VDC
C1
L1
C2
RO3XXXA
Bottom View
RF Bypass
+VDC
Terminal
Typical Test Circuit
The test circuit inductor, L
TEST
, is tuned to resonate with the static
capacitance, C
O
, at F
C
.
Equivalent LC Mode
l
0.05 pF*
Cp
Co = Cp + 0.05 pF
*Case Parasitics
ELECTRICAL TEST
From 50
Network Analyzer
To 50
Network Analyzer
Rm
Lm
Cm
Temperature Characteristics
The curve shown on the right
accounts for resonator
contribution only and does not
include LC component
temperature contributions
.
Low-Loss
Matching
Network to
50
Terminal
NC
NC
Terminal
f
C
= f
O
, T
C
= T
O
0
(f-fo) / fo (ppm)
0
-50
-100
-150
-200
0 +20 +40 +60 +80
-50
POWER TEST
P
INCIDENT
-100
-150
-200
-80 -60 -40 -20
50
Source
P
at F
C
REFLECTED
Typical Circuit Board
Land Pattern
T = T
C
- T
O
( °C )
CW RF Power Dissipation =
P INCIDENT - P REFLECTED
Typical Application Circuits
Typical Low-Power Transmitter Application
+9VDC
Modulation
Input
200k
C1
47
L1
(Antenna)
The circuit board land pattern shown below is one possible design. The
optimum land pattern is dependent on the circuit board assembly process
which varies by manufacturer. The distance between adjacent land edges
should be at a maximum to minimize parasitic capacitance. Trace lengths
from terminal lands to other components should be short and wide to
minimize parasitic series inductances.
(4 Places)
Typical Dimension:
0.010 to 0.047 inch
(0.25 to 1.20 mm)
C2
RO3XXXA
Bottom View
470
RF Bypass
Case Design
Top View
B
Side View
C
Bottom View
E (3x)
4
F (4x)
3
2
G (1x
D
1
A
Copyright © Murata Manufacturing Co., Ltd. All rights reserved. 2007
RO3101A-20 (R) 4/11/19
Page 2 of 2
www.murata.com
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