RO3156D
RO3156D-1
RO3156D-2
• Ideal for 868.95 MHz FCC Part 15 Transmitters
• Very Low Series Resistance
• Quartz Stability
• Complies with Directive 2002/95/EC (RoHS)
Pb
868.95 MHz
SAW
Resonator
The RO3156D is a true one-port, surface-acoustic-wave (SAW) resonator in a surface-mount ceramic case.
It provides reliable, fundamental-mode stabilization of fixed-frequency transmitters operating at 868.95 MHz.
This SAW is designed specifically for remote-control and data-link transmitters operating in the under ETSI
EN 300 220 regulations.
Absolute Maximum Ratings
Rating
Value
10
Units
dBm
VDC
°C
Input Power Level
DC Voltage
12
Storage Temperature
-40 to +85
260
Soldering Temperature, 10 seconds / 5 cycles maximum
°C
SM3838-6 Case
3.8 X 3.8
Electrical Characteristics
Characteristic
Sym
Notes
Minimum
868.750
868.800
868.850
Typical
Maximum
869.150
869.100
869.050
±200
Units
Frequency, +25 °C
RO3156D
f
RO3156D-1
RO3156D-2
RO3156D
MHz
C
2, 3, 4, 5
Tolerance from 916.5 MH
∆f
RO3156D-1
RO3156D-2
±150
kHz
dB
C
±100
Insertion Loss
Quality Factor
IL
2, 5, 6
5, 6, 7
1.20
6300
850
25
2.5
Unloaded Q
Q
U
50 Ω Loaded Q
Turnover Temperature
Q
L
Temperature Stability
T
10
40
°C
O
Turnover Frequency
f
6, 7, 8
fc
MHz
O
2
Frequency Temperature Coefficient
Absolute Value during the First Year
FTC
|fA|
0.032
10
ppm/°C
ppm
Frequency Aging
1
5
DC Insulation Resistance between Any Two Terminals
1.0
MΩ
Ω
µH
fF
RF Equivalent RLC Model
Motional Resistance
R
15.7
18.1
1.85
2.2
M
Motional Inductance
L
5, 6, 7, 9
M
Motional Capacitance
Transducer Static Capacitance
C
C
M
5, 6, 9
2, 7
pF
nH
O
Test Fixture Shunt Inductance
Lid Symbolization
L
15.2
TEST
RO3156D: 715, RO3156D-1: 924, RO3156D-2: 925 //YWWS
Standard Reel Quantity
Reel Size 7 Inch
Reel Size 13 Inch
500 Pieces / Reel
10
3000 Pieces / Reel
CAUTION: Electrostatic Sensitive Device. Observe precautions for handling.
Notes:
1.
2.
Frequency aging is the change in fC with time and is specified at +65°C or less.
7.
Derived mathematically from one or more of the following directly measured
parameters: fC, IL, 3 dB bandwidth, fC versus TC, and CO.
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.
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 - 0.05 pF.
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.
8.
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,
9.
fOSCILLATOR or fTRANSMITTER is approximately equal to the resonator fC.
3.
4.
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
government approval, which is the responsibility of the equipment manufacturer.
Unless noted otherwise, case temperature TC = +25°C±2°C.
5.
6.
The design, manufacturing process, and specifications of this device are subject
to change without notice.
10. Tape and Reel Standard Per ANSI/EIA 481.
www.RFM.com E-mail: info@rfm.com
©2009 by RF Monolithics, Inc.
Page 1 of 2
RO3156D - 7/30/09