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參數資料
| 型號： | RO2156A-2 |
| 廠商： | RF Monolithics, Inc. |
| 英文描述： | 868.95 MHz SAW Resonator |
| 中文描述： | 868.95兆赫聲表面波諧振器 |
| 文件頁數： | 1/2頁 |
| 文件大小： | 100K |
| 代理商： | RO2156A-2 |
RF Monolithics, Inc.
RFM Europe
1999 by RF Monolithics, Inc. The stylized RFM logo are registered trademarks of RF Monolithics, Inc.
Phone: (972) 233-2903
Phone: 44 1963 251383
Fax: (972) 387-8148
Fax: 44 1963 251510
E-mail: info@rfm.com
http://www.rfm.com
RO2156A_RO2156A-1_RO2156A-2 _012202
Page 1 of 2
Soldering Temperature (10 seconds / 5 cycles max.)
Electrical Characteristics
Characteristic
Sym
Notes
Minimum
868.875
868.875
868.850
Typical
Maximum
869.025
869.175
869.050
±75
+225
±100
2.0
Units
Frequency at +25°C Nominal Frequency RO2156A
f
C
2,3,4,5
MHz
RO2156A-1
RO2156A-2
Tolerance from 868.95 MHz RO2156A
f
C
kHz
RO2156A-1
RO2156A-2
-75
Insertion Loss
Quality Factor
IL
Q
U
Q
L
T
O
f
O
FTC
|fA|
2,5,6
5,6,7
1.1
dB
Unloaded Q
50
Loaded Q
Turnover Temperature
Turnover Frequency
Frequency Temperature Coefficient
Absolute Value during the First Year
38,997
4,000
25
f
C
0.032
<±10
Temperature Stability
6,7,8
10
40
°C
kHz
ppm/°C
2
ppm/yr
M
μH
fF
pF
nH
Frequency Aging
DC Insulation Resistance between Any Two Terminals
RF Equivalent RLC Model
1
5
1.0
Motional Resistance
Motional Inductance
Motional Capacitance
Shunt Static Capacitance
R
M
L
M
C
M
C
O
L
TEST
5, 6, 7, 9
11.4295
81.637
0.41
2.9
11.5679
197
5, 6, 7, 9
2, 7
Test Fixture Shunt Inductance
Lid Symbolization (in Addition to Lot and/ or Date Code)
Ideal for European 868.95 MHz Transmitters
Very Low Series Resistance
Quartz Stability
Surface-Mount Ceramic Case with 21 mm
2
Footprint
Complies with Directive 2002/95/EC (RoHS)
The RO2156A 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 operat-
ing at 868.95 MHz. This SAW is designed specifically for remote-control and wireless security transmitters
operating under ETSI-ETS 300 220 in Europe and under FTZ 17 TR 2100 in Germany.
Absolute Maximum Ratings
Rating
Value
+5
±30
-40 to +85
260
Units
dBm
VDC
°C
°C
CW RF Power Dissipation
DC Voltage Between Terminals
Case Temperature
868.95 MHz
SAW
Resonator
RO2156A
RO2156A-1
RO2156A-2
CAUTION: Electrostatic Sensitive Device. Observe precautions for handling.
Notes:
1.
2.
Lifetime (10 year) frequency aging.
The center frequency, f
C
, is measured at the minimum insertion loss point,
IL
MIN
, with the resonator in the 50
test system (VSWR
≤
1.2:1). The shunt
inductance, L
TEST
, is tuned for parallel resonance with C
O
at f
C
.
One or more of the following United States patents apply: 4,454,488 and
4,616,197.
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 T
C
= +25°C±2°C for all specifica-
tions.
The design, manufacturing process, and specifications of this device are sub-
ject to change without notice.
3.
4.
5.
6.
7.
Derived mathematically from one or more of the following directly measured
parameters: f
C
, IL, 3 dB bandwidth, f
C
versus T
C
, and C
O
.
Turnover temperature, T
O
, is the temperature of maximum (or turnover) fre-
quency, f
O
. The nominal frequency at any case temperature, T
C
, may be cal-
culated from: f = f
O
[1 - FTC (T
O
-T
C
)
2
].
This equivalent RLC model approximates resonator performance near the
resonant frequency and is provided for reference only. The capacitance C
O
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 0.05pF. Transducer parallel capacitance can be
calculated as: C
P
≈
C
Ο
0.05 pF.
8.
9.
SM-2 Case
相關PDF資料 |
PDF描述 |
|---|---|
| RO2156D | 868.95 MHz SAW Resonator |
| RO2156D-1 | 868.95 MHz SAW Resonator |
| RO2156D-2 | 868.95 MHz SAW Resonator |
| RO2156E | Ideal for European 868.95 MHz Transmitters |
| RO2156E-1 | Ideal for European 868.95 MHz Transmitters |
相關代理商/技術參數 |
參數描述 |
|---|---|
| RO2156D | 制造商:RFM 制造商全稱:RF Monolithics, Inc 功能描述:868.95 MHz SAW Resonator |
| RO2156D-1 | 制造商:RFM 制造商全稱:RF Monolithics, Inc 功能描述:868.95 MHz SAW Resonator |
| RO2156D-2 | 制造商:RFM 制造商全稱:RF Monolithics, Inc 功能描述:868.95 MHz SAW Resonator |
| RO2156E | 制造商:RFM 制造商全稱:RF Monolithics, Inc 功能描述:Ideal for European 868.95 MHz Transmitters |
| RO2156E-1 | 制造商:RFM 制造商全稱:RF Monolithics, Inc 功能描述:Ideal for European 868.95 MHz Transmitters |
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