SAW Components Data Sheet R 771 SAW Components R 771 Resonator 314,875 / 315,125 MHz Data Sheet Ceramic package QCC8C Features ■ 1-port resonator (2 Resonators in 1 housing) ■ Provides reliable, fundamental mode, quartz fre- quency stabilization i.e. in transmitters or local oscillators ■ Protection layer: Protec Terminals ■ Ni, gold plated Dimensions in mm, approx. weight 0,1 g Pin configuration 1 3 7 5 4,8 2,6 Input Reso 1 Input Reso 2 Output Reso 1 Output Reso 2 Ground (case) float R1 L1 C1 R2 L2 C2 C01 C02 7 3 1 Type R 771 Ordering code Marking and Package Packing B39311-R 771-U310 according to C61157-A7-A56 according to F61074-V8169-Z000 Electrostatic Sensitive Device (ESD) Maximum ratings Operable temperature range Storage temperature range DC voltage Source power TA Tstg VDC Ps –45/+120 –45/+120 12 0 2 ˚C ˚C V dBm between any terminals Mar 03, 2004 5 SAW Components R 771 Resonator 314,875 / 315,125 MHz Data Sheet Characteristics Resonator 1 Reference temperature: Terminating source impedance: Terminating Load impedance: TA = 25 ˚C ZS = 50 Ω ZL = 50 Ω min. Center frequency Resonator fc 11) Frequency offset Resonator 2 to Resonator 1 foffset typ. max. 314,825 314,875 314,925 MHz 200,0 250,0 300,0 KHz Minimum insertion attenuation αmin — 1,3 1,6 Unloaded quality factor QU 9600 13200 — — — ± 50 C1 L1 R1 C01 — — — — 2,39 106,94 16 3,1 — — 22 — fF µH Ω pF TCf — – 0,03 — ppm/K2 T0 0 — 30 ˚C Ageing of fc Equivalent circuit elements Motional capacitance Motional inductance Motional resistance Parallel capacitance2) Temperature coefficient of frequency3) Turnover temperature 1) Center frequency is defined as the maximum of the real part of the admittance. 2) If used in two port configuration (pin 1-input, pin 7-output) C0 is reduced by approx. 0,3 pF. 3) Temperature dependence of fc: fc(TA) = fc(T0)(1 + TCf(TA – T0)2) 3 Mar 03, 2004 dB ppm SAW Components R 771 Resonator 314,875 / 315,125 MHz Data Sheet Characteristics Resonator 2 Reference temperature: Terminating source impedance: Terminating Load impedance: TA = 25 ˚C ZS = 50 Ω ZL = 50 Ω min. Center frequency Resonator fc 21) Frequency offset Resonator 2 to Resonator 1 foffset typ. max. 315,075 315,125 315,175 MHz 200,0 250,0 300,0 KHz Minimum insertion attenuation αmin — 1,3 1,6 Unloaded quality factor QU 9600 13200 — — — ± 50 C2 L2 R2 C02 — — — — 2,38 107,32 16 3,1 — — 22 — fF µH Ω pF TCf — – 0,03 — ppm/K2 T0 0 — 30 ˚C Ageing of fc Equivalent circuit elements Motional capacitance Motional inductance Motional resistance Parallel capacitance2) Temperature coefficient of frequency3) Turnover temperature 1) Center frequency is defined as the maximum of the real part of the admittance. 2) If used in two port configuration (pin 3-input, pin 5-output) C0 is reduced by approx. 0,3 pF. 3) Temperature dependence of fc: fc(TA) = fc(T0)(1 + TCf(TA – T0)2) 4 Mar 03, 2004 dB ppm SAW Components R 771 Resonator 314,875 / 315,125 MHz Data Sheet Published by EPCOS AG Surface Acoustic Wave Components Division, SAW CE AE PD P.O. Box 80 17 09, D-81617 München EPCOS AG 2004. All Rights Reserved. Reproduction, publication and dissemination of this brochure and the information contained therein without EPCOS’ prior express consent is prohibited. The information contained in this brochure describes the type of component and shall not be considered as guaranteed characteristics. Purchase orders are subject to the General Conditions for the Supply of Products and Services of the Electrical and Electronics Industry recommended by the ZVEI (German Electrical and Electronic Manufacturers’ Association), unless otherwise agreed. This brochure replaces the previous edition. For questions on technology, prices and delivery please contact the Sales Offices of EPCOS AG or the international Representatives. Due to technical requirements components may contain dangerous substances. For information on the type in question please also contact one of our Sales Offices. 5 Mar 03, 2004