SAW Components Data Sheet B2581 SAW Components B2581 Spectrum Shaping Filter 70,00 MHz Data Sheet Metal package DIP16 Features ■ ■ ■ ■ Spectrum shaping filter for digital radio systems High performance passband Constant group delay Hermetically sealed metal package Terminals ■ Gold plated NiFeCo alloy Dimensions in mm, approx. weight 4,2 g Pin configuration 2 Input - ground 3 Input 10 Output - ground 11 Output 1, 5, 8, 9, 12, 16 Case - ground 6, 7, 14 15 Not connected Type Ordering code B2581 B39700-B2581-E110 Marking and Package according to C61157-A7-A11 Packing according to F61074-V8073-Z000 Electrostatic Sensitive Device (ESD) Maximum ratings Operable temperature range Storage temperature range DC voltage Source power T Tstg VDC Ps – 40/+ 85 – 40/+ 85 0 15 2 ˚C ˚C V dBm source impedance 50 Ω Feb 01, 2000 SAW Components B2581 Spectrum Shaping Filter 70,00 MHz Data Sheet Characteristics Operating temperature: Terminating source impedance: Terminating load impedance: Group delay aperture: T = 35 ˚C ZS = 50 Ω ZL = 50 Ω 2,5 MHz min. typ. max. Center frequency (center between 6 dB points) fC 69,85 70,00 70,15 MHz Insertion attenuation at fC αC — 39,8 41,0 Pass band tilt — 0,006 Deviation from theoretical frequency resp.1) ∆α fC ... fC±fY 61,00 ... 75,00 MHz — — ± 0,2 ± 0,1 ± 0,3 ± 0,2 — — 2,2 1,2 3,5 2,0 dB 0,02 dB/MHz dB dB ∆ϕ Phase ripple (p-p) fC ... 61,00 ... fC±fY 75,00 MHz ˚ ˚ Relative attenuation (relative to αC) αrel 30,00 ... 54,50 MHz 85,50 ... 110,00 MHz 34,0 32,0 40,0 36,0 — — dB dB Reflected wave signal suppression 2,0 µs ... 1,2 µs before main pulse 1,2 µs ... 6,0 µs after main pulse 50,0 50,0 56,0 61,0 — — dB dB — µs 6,0 — — — ns MHz — ppm/K Group delay at fC τC Group delay ripple (p-p) ∆τ fC ... fC±fY — 1,55 3,3 11,96 0,29 0,5 Nyquist frequency Roll-off factor Partitioning factor fY a p — — — — Temperature coefficient of frequency TCf — 1) see next page 3 Feb 01, 2000 – 87 SAW Components B2581 Spectrum Shaping Filter 70,00 MHz Data Sheet 1) Theoretical frequency response: H(x) = (S(x))p 1 S(x) = (1+cos(π·(|x|-1+a)/2a))/2 0 x = (f-fC)/fY for |x| ≤ 1-a for 1-a < |x| < 1+a for 1+a ≤ |x| 4 Feb 01, 2000 SAW Components B2581 Spectrum Shaping Filter 70,00 MHz Data Sheet Normalized frequency response Normalized frequency response 5 Feb 01, 2000 SAW Components B2581 Spectrum Shaping Filter 70,00 MHz Data Sheet Published by EPCOS AG Surface Acoustic Wave Components Division, OFW E NK P.O. Box 80 17 09, D-81617 München EPCOS AG 1999. All Rights Reserved. As far as patents or other rights of third parties are concerned, liability is only assumed for components per se, not for applications, processes and circuits implemented within components or assemblies. The information describes the type of component and shall not be considered as assured characteristics. Terms of delivery and rights to change design reserved. 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. 6 Feb 01, 2000