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參數(shù)資料
| 型號： | RO2112A |
| 廠商： | RF MONOLITHICS INC |
| 元件分類： | SAW諧振器 |
| 英文描述： | 1-PORT SAW RESONATOR, 433.42 MHz |
| 封裝： | ROHS COMPLIANT, CERAMIC, CASE SM-2, 4 PIN |
| 文件頁數(shù)： | 1/2頁 |
| 文件大?。?/td> | 115K |
| 代理商： | RO2112A |
www.RFM.com
E-mail: info@rfm.com
Page 1 of 2
2008 by RF Monolithics, Inc.
RO2112A - 3/24/08
Electrical Characteristics
Characteristic
Sym
Notes
Minimum
Typical
Maximum
Units
Center Frequency (+25 °C)
Absolute Frequency
fC
2, 3, 4, 5
433.345
433.495
MHz
Tolerance from 433.42 MHz
ΔfC
±75
kHz
Insertion Loss
IL
2, 5, 6
1.0
1.5
dB
Quality Factor
Unloaded Q
QU
5, 6, 7
14,000
50
Ω Loaded Q
QL
1,500
Temperature Stability
Turnover Temperature
TO
6, 7, 8
10
25
40
°C
Turnover Frequency
fO
fC
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 Terminals
5
1.0
M
Ω
RF Equivalent RLC Model
Motional Resistance
RM
5, 7, 9
12
19
Ω
Motional Inductance
LM
61.6197
H
Motional Capacitance
CM
2.18828
fF
Transducer Static Capacitance
CO
5, 6, 9
1.7
2.0
2.3
pF
Test Fixture Shunt Inductance
LTEST
2, 7
70
nH
Lid Symbolization
102
Ideal for European 433.92 MHz Superhet Receiver LOs
Very Low Series Resistance
Quartz Stability
Surface-Mount, Ceramic Case with 21 mm2 Footprint
Complies with Directive 2002/95/EC (RoHS)
The RO2112A 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 433.42 MHz. This SAW is designed for 433.92 MHz superhet receivers with 500 kHz IF
(Philips UAA3201T). Applications include remote-control and wireless security receivers operating in Europe
under ETSI I-ETS 300 220 and in Germany under FTZ 17 TR 2100.
Absolute Maximum Ratings
Rating
Value
Units
CW RF Power Dissipation
(See Typical Test Circuit)
+0
dBm
DC Voltage Between Terminals
(Observe ESD Precautions)
±30
VDC
Case Temperature
-40 to +85
°C
Soldering Temperature (10 seconds / 5 cycles max.)
260
°C
433.42 MHz
SAW
Resonator
RO2112A
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 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 approximately equal to the
resonator fC.
3.
One or more of the following United States patents apply: 4,454,488 and
4,616,197.
4.
Typically, equipment utilizing this device requires 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
approximately equal to 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 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 be calculated as: CP ≈ CO - 0.05 pF.
10.
Packaged in 500PC Tape carrier.
SM-2 Case
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