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RO2216D-6
* * * * Ideal for European 905.800 MHz Transmitters Very Low Series Resistance Quartz Stability Complies with Directive 2002/95/EC (RoHS)
Pb
The RO2216D-6 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 905.800 MHz. This SAW is designed specifically for remote-control and wireless security transmitters operating in Europe under ETSI I-ETS 300 220 and in Germany under FTZ 17 TR 2100.
905.800 MHz SAW Resonator
Absolute Maximum Ratings
Rating Input Power Level DC voltage Storage Temperature Soldering Temperature (10 seconds / 5 cycles max.) Value 0 12 -40 to +85 260 Units dBm VDC C C
SM3838-6 Case 3.8 X 3.8 Electrical Characteristics Characteristic
Center Frequency (+25 C) Insertion Loss Quality Factor Temperature Stability Unloaded Q 50 Loaded Q Turnover Temperature Turnover Frequency Frequency Temperature Coefficient Frequency Aging RF Equivalent RLC Model Absolute Value during the First Year Motional Resistance Motional Inductance Motional Capacitance Shunt Static Capacitance Test Fixture Shunt Inductance Lid Symbolization (in addition to Lot and/or Date Codes) Standard Reel Quantity Reel Size 7 Inch Reel Size 13 Inch DC Insulation Resistance between Any Two Terminals RM LM CM CO LTEST 5, 6, 9 2, 7 5, 7, 9 Absolute Frequency Tolerance from 905.800 MHz
Sym
fC fC IL QU QL TO fO FTC |fA|
Notes
2,3,4,5 2,5,6 5,6,7
Minimum
905.700
Typical
Maximum
905.900 100
Units
MHz kHz dB
2.1 7300 1500 10 25 fC 0.032 10 1.0 28 38 0.8 1.8 17 583 // YWWS 500 Pieces/Reel 3000 Pieces/Reel
2.8
40
C ppm/C2 ppm/yr M H fF pF nH
6,7,8 1 5
CAUTION: Electrostatic Sensitive Device. Observe precautions for handling. Notes:
1. Frequency aging is the change in fC with time and is specified at +65C or less. Aging may exceed the specification for prolonged temperatures above +65C. Typically, aging is greatest the first year after manufacture, decreasing in subsequent years. 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, fOSCILLATOR or fTRANSMITTER is approximately equal to the resonator fC. 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 = +25C2C. 6. 7. 8. The design, manufacturing process, and specifications of this device are subject to change without notice. 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.
2.
9.
3. 4. 5.
www.RFM.com E-mail: info@rfm.com (c)2008 by RF Monolithics, Inc.
Page 1 of 2 RO2216D-6 - 3/26/08
Electrical Connections
The SAW resonator is bidirectional and may be installed with either orientation. The two terminals are interchangeable and unnumbered. The callout NC indicates no internal connection. The NC pads assist with mechanical positioning and stability. External grounding of the NC pads is recommended to help reduce parasitic capacitance in the circuit.
Power Test Pin
1 2 3 4 5 6 NC Terminal NC NC Terminal NC
Connection
P INCIDENT
50 Source at F C
P REFLECTED
Low-Loss Matching Network to 50
1 6
2
3
5
4
B 1 6
C
G
H
Typical Application Circuits
Typical Low-Power Transmitter Application
1
200k Modulation Input +9VDC C1 L1 47
6
A2
5
E
5
2
I
4 3 4
(Antenna)
3
1 2 3
D
J
6
5
4
C2
ROXXXXC Bottom View
RF Bypass
470
Case Dimensions Dimension Min
A B C D E G H I J 3.60 3.60 1.00 0.95 2.39 0.90 1.90 0.50 1.70
Typical Local Oscillator Application
200k
Output
mm Nom
3.80 3.80 1.20 1.10 2.54 1.0 2.0 0.6 1.8
Inches Max
4.0 4.0 1.40 1.25 2.69 1.10 2.10 0.70 1.90
+VDC
C1 L1
+VDC
Min
0.14 0.14 0.04 0.037 0.090 0.035 0.75 0.020 0.067
Nom
0.15 0.15 0.05 0.043 0.10 0.04 0.08 0.024 0.07
Max
0.16 0.16 0.055 0.05 0.110 0.043 0.83 0.028 0.075
1 6 2 3
5
4
C2
ROXXXXC Bottom View
RF Bypass
Equivalent LC Model
0.05 pF*
Typical Test Circuit
The test circuit inductor, LTEST, is tuned to resonate with the static capacitance, CO, at FC.
Cp
Co = Cp + 0.05 pF *Case Parasitics
Electrical Test
Rm
Lm
Cm
Temperature Characteristics
The curve shown on the right accounts for resonator contribution only and does not include LC component temperature contributions.
6 1
fC = f O , T C = T O
0
(f-fo ) / fo (ppm)
To 50 Network Analyzer
0 -50 -100 -150 -200 0 +20 +40 +60 +80
From 50 Network Analyzer
5
2
-50
4
3
-100
-150 -200 -80 -60 -40 -20
T = T C - T O ( C )
www.RFM.com E-mail: info@rfm.com (c)2008 by RF Monolithics, Inc.
Page 2 of 2 RO2216D-6 - 3/26/08

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