RO3144C-1 [MURATA]
1-PORT SAW RESONATOR;
| 型号： | RO3144C-1 |
| 厂家： | 
muRata |
| 描述： | 1-PORT SAW RESONATOR 晶体 谐振器 |
| 文件： | 总2页 (文件大小：73K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
RO3144C
RO3144C-1
RO3144C-2
®
• Ideal for 916.500 MHz Transmitters
• Very Low Series Resistance
• Quartz Stability
916.500 MHz
SAW
Resonator
Pb
• Complies with Directive 2002/95/EC (RoHS)
The RO3144C 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 local oscillators operating at
approximately 916.500 MHz. This SAW was designed for automotive-keyless-entry applications operating in
the USA under FCC Part 15, in Canada under DoC RSS-210, and in Italy.
Absolute Maximum Ratings
Rating
Value
Units
dBm
VDC
°C
Input Power Level
0
12
DC Voltage
Storage Temperature
-40 to +85
260
Soldering Temperature (10 seconds / 5 cycles max.)
°C
SM5050-8 Case
5 X 5
Electrical Characteristics
Characteristic
Sym
Notes
Minimum
Typical
Maximum
Units
Frequency (+25 °C) Nominal Frequency
Tolerance from 916.500 MHz
Insertion Loss
RO3144C
916.300
916.700
fC
916.350
916.400
916.650
916.600
±200
MHz
RO3144C-1
RO3144C-2
RO3144C
2, 3, 4, 5
ΔfC
RO3144C-1
RO3144C-2
±150
kHz
dB
±100
IL
QU
QL
TO
fO
2, 5, 6
1.2
26000
2800
25
2.5
Quality Factor
Unloaded Q
50W Loaded Q
Temperature Stability
Turnover Temperature
10
40
°C
fC
Turnover Frequency
6, 7, 8
ppm/°C2
ppm/yr
Frequency Temperature Coefficient
Absolute Value during the First Year
FTC
|fA|
0.032
10
Frequency Aging
1, 6
5
DC Insulation Resistance between Any Two Terminals
1.0
MΩ
Ω
RM
LM
RF Equivalent RLC Model
Motional Resistance
Motional Inductance
Motional Capacitance
Shunt Static Capacitance
12.7
55.9
.54
5, 7, 9
µH
fF
CM
CO
5, 6, 9
2, 7
2.2
pF
nH
LTEST
Test Fixture Shunt Inductance
Lid Symbolization
13.5
RO3144C 691, RO3144C-1 B12, RO3144C-2 B13 // YWWS
500 Pieces / Reel
Standard Reel Quantity
Reel Size 7 Inch
Reel Size 13 Inch
3000 Pieces / Reel
CAUTION: Electrostatic Sensitive Device. Observe precautions for handling.
Notes:
1.
2.
Frequency aging is the change in f with time and is specified at +65°C or
6.
7.
The design, manufacturing process, and specifications of this device are
subject to change without notice.
C
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.
Derived mathematically from one or more of the following directly
measured parameters: f , IL, 3 dB bandwidth, f versus T , and C .
C
C
C
O
The center frequency, f , is measured at the minimum insertion loss point,
8.
Turnover temperature, T , is the temperature of maximum (or turnover)
C
O
IL , with the resonator in the 50 Ω test system (VSWR ≤ 1.2:1). The
frequency, f . The nominal frequency at any case temperature, T , may be
MIN
O
C
2
shunt inductance, L
, is tuned for parallel resonance with C at f .
TEST
O C
calculated from: f = f [1 - FTC (T -T ) ]. Typically oscillator T is
O O C O
Typically, f
or f
is approximately equal to the
OSCILLATOR
TRANSMITTER
approximately equal to the specified resonator T .
O
resonator f .
C
9.
This equivalent RLC model approximates resonator performance near the
3.
4.
One or more of the following United States patents apply: 4,454,488 and
4,616,197.
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
Typically, equipment utilizing this device requires emissions testing and
government approval, which is the responsibility of the equipment
manufacturer.
measurement includes parasitic capacitance with "NC” pads unconnected.
Case parasitic capacitance is approximately 0.05 pF. Transducer parallel
capacitance can by calculated as: C ≈ C - 0.05 pF.
5.
Unless noted otherwise, case temperature T = +25°C±2°C.
C
P
O
www.RFM.com
E-mail: info@rfm.com
Page 1 of 2
©2014 by RF Monolithics, Inc.
RO3144C - 1/6/14
Power Test
Electrical Connections
Pin
Connection
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.
NC
1
NC
3
1
2
3
4
5
6
7
8
NC
PINCIDENT
Terminal
NC
Low-Loss
Matching
Network to
2
8
6
50 Source
Ω
at FC
4
NC
NC
NC
PREFLECTED
7
5
50
Ω
NC
Terminal
NC
NC
NC
NC
Typical Application Circuits
Typical Low-Power Transmitter Application
200k
E
B
8
C
8
Ω
+9VDC
Modulation
Input
C1
D
1
2
3
7
6
5
7
6
5
1
2
3
47
L1
(Antenna)
A
G
1
7
2
8
6
3
4
5
C2
4
4
Bottom View
RF Bypass
F
470
Typical Local Oscillator Application
200k
Output
Case Dimensions
Dimension
Ω
+VDC
C1
+VDC
mm
Inches
L1
Min
4.8
4.8
Nom Max
Min
0.189
0.189
Nom
0.197
0.197
Max
0.205
0.205
0.067
1
7
2
8
6
3
A
B
C
D
E
F
5.0
5.0
5.2
5.2
1.7
4
5
C2
Bottom View
2.08
1.17
0.64
2.54
0.082
0.046
0.025
0.100
RF Bypass
G
2.39
2.69
0.094
0.106
Equivalent LC Model
Typical Test Circuit
The test circuit inductor, LTEST, is tuned to resonate with the static
0.05 pF*
capacitance, CO, at FC.
+
C
=
C
o
0.05 pF
p
C
p
*Case Parasitics
Electrical Test
Lm
C m
Rm
Temperature Characteristics
The curve shown on the right accounts for resonator contribution only and
does not include LC component temperature contributions.
7
6
5
1
2
3
8
4
From 50
Ω
To 50
Ω
Network Analyzer
fC = fO , TC = TO
Network Analyzer
0
0
-50
-50
-100
-150
-100
-150
-200
-200
-80 -60 -40 -20
0
+40 +60 +80
+20
T = T - T ( °C )
Δ
C
O
www.RFM.com
©2014 by RF Monolithics, Inc.
E-mail: info@rfm.com
Page 2 of 2
RO3144C - 1/6/14
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