RO3053A-1
Ideal for 310.0 MHz Transmitters
Very Low Series Resistance
Quartz Stability
310.0 MHz
Surface-mount Ceramic Case
Complies with Directive 2002/95/EC (RoHS)
Pb
SAW
The RO3053A-1 is a true one-port, surface-acoustic-wave (SAW) resonator in a surface-mount, ceramic case.
Resonator
It provides reliable, fundamental-mode, quartz frequency stabilization of fixed-frequency transmitters
operating at 310.0 MHz.
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 maximum) 260 C
SM5035-4
Electrical Characteristics
Characteristic Sym Notes Minimum Typical Maximum Units
Center Frequency, +25 C Absolute Frequency f 309.950 310.050 MHz
C
2,3,4,5
Tolerance from 310.0 MHz f 50 kHz
C
Insertion Loss IL 2,5,6 1.2 1.7 dB
Quality Factor Unloaded Q Q 15500
U
5,6,7
50 Loaded Q Q 1970
L
T
Temperature Stability Turnover Temperature 10 25 40 C
O
f f
Turnover Frequency 6,7,8
O C
2
Frequency Temperature Coefficient FTC 0.032
ppm/C
|f |
Frequency Aging Absolute Value during the First Year 1 10 ppm/yr
A
DC Insulation Resistance between Any Two Terminals 5 1.0 M
R
RF Equivalent RLC Model Motional Resistance 14.6
M
L
Motional Inductance 5, 7, 9 115.7 H
M
C
Motional Capacitance 2.3 fF
M
C
Shunt Static Capacitance 5, 6, 9 2.6 pF
O
L
Test Fixture Shunt Inductance 2, 7 102 nH
TEST
Lid Symbolization (in addition to Lot and/or Date Codes) 810 // YWWS
CAUTION: Electrostatic Sensitive Device. Observe precautions for handling.
Notes:
1. Frequency aging is the change in f with time and is specified at +65 C or subject to change without notice.
C
7. Derived mathematically from one or more of the following directly
less. Aging may exceed the specification for prolonged temperatures
measured parameters: f , IL, 3 dB bandwidth, f versus T , and C .
above +65 C. Typically, aging is greatest the first year after manufacture,
C C C O
decreasing in subsequent years. 8. Turnover temperature, T , is the temperature of maximum (or turnover)
O
2. The center frequency, f , is measured at the minimum insertion loss point,
frequency, f . The nominal frequency at any case temperature, T , may be
C
O C
IL , with the resonator in the 50 test system (VSWR 1.2:1). The 2
MIN
calculated from: f = f [1 - FTC (T -T ) ]. Typically oscillator T is
O O C O
shunt inductance, L , is tuned for parallel resonance with C at f .
TEST O C
approximately equal to the specified resonator T .
O
Typically, f or f is approximately equal to the
OSCILLATOR TRANSMITTER
9. This equivalent RLC model approximates resonator performance near the
resonator f .
C
resonant frequency and is provided for reference only. The capacitance C
O
3. One or more of the following United States patents apply: 4,454,488 and
is the static (nonmotional) capacitance between the two terminals
4,616,197.
measured at low frequency (10 MHz) with a capacitance meter. The
4. Typically, equipment utilizing this device requires emissions testing and
measurement includes parasitic capacitance withNC pads unconnected.
government approval, which is the responsibility of the equipment
Case parasitic capacitance is approximately 0.05 pF. Transducer parallel
manufacturer.
capacitance can by calculated as: C C -0.05pF.
P O
5. Unless noted otherwise, case temperature T =+25 2 C.
C
10. Tape and Reel standard per ANSI / EIA 481.
6. The design, manufacturing process, and specifications of this device are
www.RFM.com E-mail: info@rfm.com Page 1 of 2
2009-2011 by RF Monolithics, Inc. RO3053A-1 6/28/11Electrical Connections Equivalent Model
The SAW resonator is bidirectional and may be
Terminal 0.05 pF*
installed with either orientation. The two terminals
C = C +0.05 pF
o p
are interchangeable and unnumbered. The callout
C
p
NC indicates no internal connection. The NC pads
*Case Parasitics
assist with mechanical positioning and stability.
External grounding of the NC pads is
Terminal
Lm Cm
Rm
recommended to help reduce parasitic
Temperature Characteristics
capacitance in the circuit.
The curve shown on the right
f = f , T = T
Typical Test Circuit C O C O
accounts for resonator 0 0
The test circuit inductor, L , is tuned to resonate with the static
TEST
-50
contribution only and does not -50
capacitance, C , at F .
O C
include LC component
-100 -100
temperature contributions.
-150 -150
-200 -200
ELECTRICAL TEST
-80 -60 -40 -20 0 +40 +60 +80
+20
Case
T = T - T ( C )
C O
From 50 To 50
Network Analyzer Network Analyzer
POWER TEST
P
INCIDENT
Terminal
Low-Loss
50 Source
Matching
NC
NC
P
at F
Network to
C REFLECTED
50
Terminal
P P
CW RF Power Dissipation = INCIDENT - REFLECTED
Typical Application Circuits
Typical Low-Power Transmitter Application
+9VDC
200k
Modulation
47
Input C1
L1
(Antenna)
PCB Land Pattern
Top View
C2
RF Bypass
RO3XXXA
Millimeters Inches
Bottom View
Dimensions
Min Nom Max Min Nom Max
470
A 4.87 5.00 5.13 0.191 0.196 0.201
B 3.37 3.50 3.63 0.132 0.137 0.142
Typical Local Oscillator Applications
C 1.45 1.53 1.60 0.057 0.060 0.062
D 1.35 1.43 1.50 0.040 0.057 0.059
Output
E 0.67 0.80 0.93 0.026 0.031 0.036
+VDC
F 0.37 0.50 0.63 0.014 0.019 0.024
C1 +VDC
G 1.07 1.20 1.33 0.042 0.047 0.052
L1
H - 1.04 - - 0.041 -
I - 1.46 - - 0.058 -
C2
J - 0.50 - - 0.019 -
RO3XXXA
RF Bypass K - 1.05 - - 0.041 -
Bottom View
L - 1.44 - - 0.057 -
M - 0.71 - - 0.028 -
www.RFM.com E-mail: info@rfm.com Page 2 of 2
2009-2011 by RF Monolithics, Inc. RO3053A-1 6/28/11
(ppm)
(f-f ) f
o / o
Case Ground
Case Ground