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參數(shù)資料
| 型號(hào)： | RO2104A |
| 廠商： | RF MONOLITHICS INC |
| 元件分類(lèi)： | SAW諧振器 |
| 英文描述： | 1-PORT SAW RESONATOR, 303.825 MHz |
| 封裝： | ROHS COMPLIANT, CERAMIC, CASE SM-2, 4 PIN |
| 文件頁(yè)數(shù)： | 1/2頁(yè) |
| 文件大?。?/td> | 114K |
| 代理商： | RO2104A |
www.RFM.com
E-mail: info@rfm.com
Page 1 of 2
2008 by RF Monolithics, Inc.
RO2104A - 3/24/08
Electrical Characteristics
Characteristic
Sym
Notes
Minimum
Typical
Maximum
Units
Frequency (+25 °C)
Nominal Frequency
fC
2, 3, 4, 5
303.725
303.925
MHz
Tolerance from 303.825 MHz
ΔfC
±100
kHz
Insertion Loss
IL
2, 5, 6
1.1
2.0
dB
Quality Factor
Unloaded Q
QU
5, 6, 7
17,800
50
Ω Loaded Q
QL
2,100
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, 6
10
ppm/yr
DC Insulation Resistance between Any Two Terminals
5
1.0
M
Ω
RF Equivalent RLC Model
Motional Resistance
RM
5, 6, 7,
9,
14
26
Ω
Motional Inductance
LM
127.021
H
Motional Capacitance
CM
2.16032
fF
Transducer Static Capacitance
CO
5, 6, 9
2.0
2.3
2.6
pF
Test Fixture Shunt Inductance
LTEST
2, 7
120
nH
Lid Symbolization
112
Ideal for 303.825 MHz Transmitters
Very Low Series Resistance
Quartz Stability
Surface-Mount, Ceramic Case with 21 mm2 Footprint
Complies with Directive 2002/95/EC (RoHS)
The RO2104A 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 303.825 MHz. This SAW is designed specifically for AM transmitters in wireless security and
remote control applications operating in the USA under FCC Part 15, in Australia, in Japan, and in Korea.
Absolute Maximum Ratings
Rating
Value
Units
CW RF Power Dissipation (See Typical Test Circuit)
+5
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
303.825 MHz
SAW
Resonator
RO2104A
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 tem-
peratures 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 TO 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 by calculated as:
CP ≈ CO -0.05pF.
SM-2 Case
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| RO2108 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Analog IC |
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