RO2188 [RFM]
390.0 MHz SAW Resonator; 390.0 MHz的SAW谐振器
| 型号： | RO2188 |
| 厂家： | 
RF MONOLITHICS, INC |
| 描述： | 390.0 MHz SAW Resonator |
| 文件： | 总2页 (文件大小：142K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
®
RO2188
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Ideal for 390.0 MHz Transmitters
Very Low Series Resistance
Quartz Stability
Rugged, Hermetic, TO39-3 Package
Complies with Directive 2002/95/EC (RoHS)
390.0 MHz
SAW
Pb
Resonator
The RO2188 is a true one-port, surface-acoustic-wave (SAW) resonator in TO39-3 case. It provides reliable,
fundamental-mode, quartz frequency stabilization of fixed-frequency transmitters operating at 390.0 MHz.
Absolute Maximum Ratings
Rating
Value
+5
Units
dBm
VDC
°C
CW RF Power Dissipation
DC Voltage Between Any Two Pins (Observe ESD Precautions)
Case Temperature
±30
-40 to +85
TO39-3 Case
Electrical Characteristics
Characteristic
Sym
Notes
Minimum
Typical
Maximum
Units
Center Frequency at +25 °C
Absolute Frequency
f
389.900
390.100
MHz
kHz
dB
C
2, 3, 4, 5
Tolerance from 304.0 MHz
Df
±100
2.0
C
Insertion Loss
Quality Factor
IL
0.9
12,000
1,200
42
2, 5, 6
5, 6, 7
Unloaded Q
Q
U
50 W Loaded Q
Q
L
Temperature Stability
Turnover Temperature
Turnover Frequency
T
f
27
1.0
3.6
57
°C
O
f -5
6, 7, 8
kHz
O
C
2
Frequency Temperature Coefficient
Absolute Value during the First Year
FTC
|fA|
0.037
ppm/°C
Frequency Aging
£10
ppm/yr
MW
W
1
5
DC Insulation Resistance between Any Two Terminals
RF Equivalent RLC Model
Motional Resistance
R
L
11
54.963
3.0299
3.9
26
M
Motional Inductance
µH
5, 7, 9
M
Motional Capacitance
C
fF
M
O
Pin 1 to Pin 2 Static Capacitance
Transducer Static Capacitance
C
5, 6, 9
5, 6, 7, 9
2, 7
4.2
pF
C
3.65
43
pF
P
Test Fixture Shunt Inductance
Lid Symbolization
L
TEST
nH
E319
CAUTION: Electrostatic Sensitive Device. Observe precautions for handling.
Notes:
1.
2.
Lifetime (10 year) frequency aging.
parameters: fC, IL, 3 dB bandwidth, fC versus TC, and CO.
The center frequency, fC, is measured at the minimum insertion loss point,
8.
Turnover temperature, TO, is the temperature of maximum (or turnover) fre-
quency, fO. The nominal frequency at any case temperature, TC, may be cal-
ILMIN, with the resonator in the 50 W test system (VSWR £ 1.2:1). The shunt
inductance, LTEST, is tuned for parallel resonance with CO at fC.
culated from: f = fO [1 - FTC (TO -TC)2].
3.
4.
One or more of the following United States patents apply: 4,454,488 and
4,616,197.
9.
This equivalent RLC model approximates resonator performance near the
resonant frequency and is provided for reference only. The capacitance CO is
Typically, equipment utilizing this device requires emissions testing and gov-
ernment approval, which is the responsibility of the equipment manufacturer.
Unless noted otherwise, case temperature TC = +25°C±2°C.
the static (nonmotional) capacitance between the two terminals measured at
low frequency (10 MHz) with a capacitance meter. The measurement
includes parasitic capacitance with a floating case. Case parasitic capaci-
tance is approximately 0.25pF. Transducer parallel capacitance can be cal-
culated as: CP » CO - 0.25pF.
5.
6.
The design, manufacturing process, and specifications of this device are sub-
ject to change without notice.
7.
Derived mathematically from one or more of the following directly measured
RF Monolithics, Inc.
RFM Europe
Phone: (972) 233-2903
Phone: 44 1963 251383
Fax: (972) 387-9148
Fax: 44 1963 251510
E-mail: info@rfm.com
http://www.rfm.com
RO2188-031300
Page 1 of 2
©1999 by RF Monolithics, Inc. The stylized RFM logo are registered trademarks of RF Monolithics, Inc.
390.0 MHz
SAW Resonator
Electrical Connections
This one-port, two-terminal SAW resonator is bidirectional. The terminals
Temperature Characteristics
are interchangeable with the exception of circuit board layout.
fC = fO , T C = TO
The curve shown on the right
accounts for resonator contri-
bution only and does not in-
clude oscillator temperature
0
0
Pin
Connection
-50
-50
Bottom View
Pin 2
1
2
3
Terminal 1
Terminal 2
-100
-100
-150
-200
characteristics.
Pin 1
-150
Case Ground
-200
Pin 3
-80 -60 -40 -20
0
+40 +60 +80
+20
T = T - TO ( °C )
D
C
Typical Test Circuit
The test circuit inductor, L
, is tuned to resonate with the static capaci-
TEST
tance, C at F .
O
C
Equivalent LC Model
The following equivalent LC model is valid near resonance:
Electrical Test:
1
2
W
W
2
3
1
Network
Analyzer
Network
Analyzer
C =C
+
0.25 pF*
p
o
C
p
*Case Parasitics
R
L
C
M
M
M
0.5 pF*
0.5 pF*
Power Test:
3
1
P
INCIDENT
Low-Loss
50
W
Matching
Network
Source at
P
Case Design
REFLECTED
F
C
W
3
to50
2
C
G
B
-
CW RF Power Dissipation =
P
P
INCIDENT
REFLECTED
H
F
Typical Application Circuits
E
A
D
(3 places)
Typical Low-Power Transmitter Application:
J
(2 places)
200kW
45°
MPS-H10
Modulation
Input
+9VDC
47
C1
L1
1
2
(Antenna)
Millimeters
Min Max
Inches
Dimensions
Min
Max
C2
ROXXXX
3
RF Bypass
Bottom View
A
B
C
D
E
F
9.40
3.18
3.50
0.370
0.125
0.138
470
2.50
0.098
0.46 Nominal
0.018 Nominal
0.200 Nominal
0.100 Nominal
0.100 Nominal
Typical Local Oscillator Application:
5.08 Nominal
2.54 Nominal
2.54 Nominal
Output
+VDC
C1
L1
G
H
J
+VDC
1
2
1.02
0.040
1.40
0.055
C2
ROXXXX
Bottom View
3
RF Bypass
RF Monolithics, Inc.
RFM Europe
Phone: (972) 233-2903
Phone: 44 1963 251383
Fax: (972) 387-9148
Fax: 44 1963 251510
E-mail: info@rfm.com
http://www.rfm.com
RO2188-031300
Page 2 of 2
©1999 by RF Monolithics, Inc. The stylized RFM logo are registered trademarks of RF Monolithics, Inc.
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