- 您现在的位置：买卖IC网 > PDF目录67166 > RO2175A (RF MONOLITHICS INC) 1-PORT SAW RESONATOR, 430.5 MHz PDF资料下载
参数资料
| 型号： | RO2175A |
| 厂商： | RF MONOLITHICS INC |
| 元件分类： | SAW谐振器 |
| 英文描述： | 1-PORT SAW RESONATOR, 430.5 MHz |
| 文件页数： | 1/2页 |
| 文件大小： | 173K |
| 代理商： | RO2175A |
Preliminary
RF Monolithics, Inc.
Phone: (972) 233-2903
Fax: (972) 387-9148
E-mail: info@rfm.com
Page 1 of 2
RFM Europe
Phone: 44 1963 251383
Fax: 44 1963 251510
http://www.rfm.com
1999 by RF Monolithics, Inc. The stylized RFM logo are registered trademarks of RF Monolithics, Inc.
RO2175A-062001
Electrical Characteristics
Characteristic
Sym
Notes
Minimum
Typical
Maximum
Units
Frequency (+25 °C)
Absolute Frequency
fC
2, 3, 4, 5
430.425
430.575
MHz
Tolerance from 430.5 MHz
f
C
±75
kHz
Insertion Loss
IL
2, 5, 6
1.0
1.5
dB
Quality Factor
Unloaded Q
QU
5, 6, 7
13,600
50
Loaded Q
QL
1,700
Temperature Stability
Turnover Temperature
TO
6, 7, 8
15
30
45
°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
RF Equivalent RLC Model
Motional Resistance
RM
5, 6, 7, 9
14
19
Motional Inductance
LM
72.0
H
Motional Capacitance
CM
1.9
fF
Shunt Static Capacitance
CO
5, 6, 7, 9
2.2
2.5
2.8
pF
Test Fixture Shunt Inductance
LTEST
2, 7
54.77
nH
Lid Symbolization (in Addition to Lot and/or Date Code)
289
Ideal for Chinese 431 MHz Superhet Receiver LO’s
Very Low Series Resistance
Quartz Stability
Surface-Mount, Ceramic Case with 21 mm2 Footprint
The RO2175A is a 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 approxi-
mately 430.5 MHz. This SAWR is designed for 431 MHz superhet receivers with 500kHz IF (Philips
UAA320IT). Applications include remote-control and wireless security receivers operating in China.
Absolute Maximum Ratings
Rating
Value
Units
CW RF Power Dissipation
+0
dBm
DC Voltage Between Terminals (Observe ESD Precautions)
±30
VDC
Case Temperature
-40 to +85
°C
Soldering Temperature
+250
°C
430.5 MHz
SAW
Resonator
RO2175A
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 subse-
quent years.
2.
The center frequency, fC, is measured at the minimum insertion loss point,
ILMIN, with the resonator in the 50 test system (VSWR ≤ 1.2:1). The shunt
inductance, LTEST, is tuned for parallel resonance with CO at fC. Typically, fOS-
CILLATOR 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 govern-
ment 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) fre-
quency, fO. The nominal frequency at any case temperature, TC, may be calcu-
lated 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 reso-
nant 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 para-
sitic capacitance with "NC” pads unconnected. Case parasitic capacitance is
approximately 0.05 pF. Transducer parallel capacitance can by calculated as:
CP ≈ CO - 0.05 pF.
SM-2 Case
相关PDF资料 |
PDF描述 |
|---|---|
| RO2179B | 1-PORT SAW RESONATOR, 315 MHz |
| RO2180B | 1-PORT SAW RESONATOR, 433.92 MHz |
| RO2181B | 1-PORT SAW RESONATOR, 868.35 MHz |
| RO2LUG40DRV | T-1 SINGLE COLOR LED ARRAY, GREEN, 3 mm |
| RO3030A-1 | 1-PORT SAW RESONATOR, 314.2 MHz |
相关代理商/技术参数 |
参数描述 |
|---|---|
| RO2179B | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Analog IC |
| RO2180B | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Analog IC |
| RO2181B | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Analog IC |
| RO2188 | 制造商:RFM 制造商全称:RF Monolithics, Inc 功能描述:390.0 MHz SAW Resonator |
| RO2188A | 制造商:RFM 制造商全称:RF Monolithics, Inc 功能描述:390.0 MHz SAW Resonator |
发布紧急采购，3分钟左右您将得到回复。