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參數(shù)資料
| 型號： | RO2071-2 |
| 廠商： | RF MONOLITHICS INC |
| 元件分類： | SAW諧振器 |
| 英文描述： | 1-PORT SAW RESONATOR, 980 MHz |
| 封裝： | ROHS COMPLIANT, HERMETIC, CASE TO39-3, 3 PIN |
| 文件頁數(shù)： | 1/2頁 |
| 文件大?。?/td> | 140K |
| 代理商： | RO2071-2 |
www.RFM.com
E-mail: info@rfm.com
Page 1 of 2
2008 by RF Monolithics, Inc.
RO2071-2 - 3/25/08
Electrical Characteristics
Characteristic
Sym
Notes
Minimum
Typical
Maximum
Units
Center Frequency (+25 °C)
Absolute Frequency
fC
2, 3, 4, 5
979.825
980.175
MHz
Tolerance from 980.0 MHz
ΔfC
±175
kHz
Insertion Loss
IL
2, 5, 6
1.5
2.2
dB
Quality Factor
Unloaded Q
QU
5, 6, 7
18,000
50
Ω Loaded Q
QL
5,000
Temperature Stability
Turnover Temperature
TO
6, 7, 8
24
39
54
°C
Turnover Frequency
fO
fc
kHz
Frequency Temperature Coefficient
FTC
0.032
ppm/°C2
Frequency Aging
Absolute Value during the First Year
|fA|
1
≤10
ppm/yr
DC Insulation Resistance between Any Two Pins
5
1.0
M
Ω
RF Equivalent RLC Model
Motional Resistance
RM
5, 7, 9
12
124
Ω
Motional Inductance
LM
0.035
mH
Motional Capacitance
CM
0.76
fF
Pin 1 to Pin 2 Static Capacitance
CO
5, 6, 9
2.2
2.5
2.8
pF
Transducer Static Capacitance
CP
5, 6, 7, 9
2.3
pF
Test Fixture Shunt Inductance
LTEST
2, 7
nH
Lid Symbolization (in Addition to Lot and/or Date Codes)
RFM RO2071-2
TO39-3 Case
Ideal for 980 MHz Transmitters
Low Series Resistance
Quartz Stability
Rugged, Hermetic, Low-Profile TO39 Case
Complies with Directive 2002/95/EC (RoHS)
The RO2071-2 is a true one-port, surface-acoustic-wave (SAW) resonator in a low-profile TO39 case. It
provides reliable, fundamental-mode, quartz frequency stabilization of fixed-frequency transmitters operating
at 980 MHz.
Absolute Maximum Ratings
Rating
Value
Units
CW RF Power Dissipation
+0
dBm
DC Voltage Between Any Two Pins
±30
VDC
Case Temperature
-40 to +85
°C
980.0 MHz
SAW
Resonator
RO2071-2
CAUTION: Electrostatic Sensitive Device. Observe precautions for handling.
Notes:
1.
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 significantly in subsequent years.
2.
The center frequency, fC, is measured at the minimum insertion loss point, ILMIN, with the resonator in the 50 Ω test system (VSWR ≤ 1.2:1). The
shunt inductance, LTEST, is tuned for parallel resonance with CO at fC. Typically, fOSCILLATOR or fTRANSMITTER is less than the resonator fC.
3.
One or more of the following United States patents apply: 4,454,488 and 4,616,197 and others pending.
4.
Typically, equipment designs utilizing this device require emissions testing and government approval, which is the responsibility of the equipment
manufacturer.
5.
Unless noted otherwise, case temperature TC = +25°C±2°C.
6.
The design, manufacturing process, and specifications of this device are subject to change without notice.
7.
Derived mathematically from one or more of the following directly measured parameters: fC, IL, 3 dB bandwidth, fC versus TC, and CO.
8.
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 T
O is 20°C less than the specified resonator TO.
9.
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 pin1 and pin 2 measured at low frequency (10 MHz) with a capacitance meter. The measurement
includes case parasitic capacitance with a floating case. For usual grounded case applications (with ground connected to either pin 1 or pin 2 and to
the case), add approximately 0.25 pF to CO.
Pb
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