SAW Components Data Sheet K 7257 M SAW Components K 7257 M IF Filter for Video / Multistandard Applications 33,90 MHz and 38,90 MHz Data Sheet Standard Plastic package SIP5K ■ B/G ■ L/L’ ■ M/N Features ■ TV IF filter switchable from B/G,L/L’ mode to M/N mode ■ B/G,L/L’ mode with Nyquist slope and sound suppression ■ Highly reduced group delay predistortion as compared to standard B/G, half ■ M/N mode with Nyquist slope and sound sup- pression ■ Constant group delay Dimensions in mm, approx. weight 1,0 g Terminals ■ Tinned CuFe alloy Pin configuration 1 2 3 4, 5 1 Input Switching input Chip carrier – ground Output 4 2 5 3 Type Ordering code K 7257 M B39389-K7257-M100 Marking and package according to C61157-A1-A15 Packing according to F61074-V8067-Z000 Maximum ratings Operable temperature range Storage temperature range DC voltage AC voltage TA Tstg VDC Vpp –25/+65 ˚C –40/+85 5 10 ˚C V V 2 between any terminals between any terminals Jan 27, 2003 SAW Components K 7257 M IF Filter for Video / Multistandard Applications 33,90 MHz and 38,90 MHz Data Sheet Characteristics in B/G, L/L’ mode (switching input pin 2 connected to ground) TA = 25 ˚C ZS = 50 Ω ZL = 2 kΩ || 3 pF Reference temperature: Terminating source impedance: Terminating load impedance: min. Insertion attenuation Reference level for the following data Relative attenuation Picture carrier Picture carrier Color carrier Sound carrier NICAM sound carrier Adjacent picture carrier Adjacent sound carrier Lower sidelobe Upper sidelobe typ. max. α 37,40 MHz 15,1 16,6 18,1 dB 5,0 — -0,5 28,0 — 45,0 47,0 45,0 39,0 40,0 40,0 40,0 6,0 7,9 0,5 43,0 36,0 60,0 60,0 60,0 52,0 53,0 50,0 46,0 7,0 — 1,5 — — — — — — — — — dB dB dB dB dB dB dB dB dB dB dB dB 36,0 43,0 — dB 42,0 52,0 — dB 50,0 56,0 — dB αrel 38,90 33,90 34,47 33,40 33,05 30,90 31,90 32,40 40,15 40,40 41,40 25,00 ... 31,90 40,40 ... 45,00 MHz MHz MHz MHz MHz MHz MHz MHz MHz MHz MHz MHz MHz Reflected wave signal suppression 1,2 µs ... 6,0 µs after main pulse (test pulse 250 ns, carrier frequency 37,40 MHz) Feedthrough signal suppression 1,3 µs ... 1,2 µs before main pulse (test pulse 250 ns, carrier frequency 37,40 MHz) ∆τ Group delay predistortion (reference frequency 38,90 MHz) 36,90 MHz 34,47 MHz Impedance at 37,40 MHz Input: ZIN = RIN || CIN Output: ZOUT = ROUT || COUT ns — –50 — ns — 50 — ns — 1,2 ||18,6 1,8 || 4,2 — kΩ || pF — kΩ || pF — ppm/K — TCf Temperature coefficient of frequency 3 — Jan 27, 2003 –72 SAW Components K 7257 M IF Filter for Video / Multistandard Applications 33,90 MHz and 38,90 MHz Data Sheet Characteristics in M/N mode (switching input pin 2 connected to pin 1) TA = 25 ˚C ZS = 50 Ω ZL = 2 kΩ || 3 pF Reference temperature: Terminating source impedance: Terminating load impedance: min. Relative attenuation Picture carrier Color carrier Sound carrier Adjacent picture carrier Adjacent sound carrier Lower sidelobe Upper sidelobe typ. max. α Insertion attenuation Reference level for the following data 37,40 MHz 14,8 16,3 17,8 dB 5,4 1,6 28,0 37,0 40,0 36,0 32,0 6,4 2,6 39,0 45,0 48,0 44,0 38,0 7,4 3,6 — — — — — dB dB dB dB dB dB 42,0 52,0 — dB — 50,0 — dB — 50 — ns — 1,3 ||19,5 1,8 || 4,2 — kΩ || pF — kΩ || pF — ppm/K αrel 38,90 35,32 34,40 32,90 40,40 25,00 ... 32,90 40,40 ... 45,00 MHz MHz MHz MHz MHz MHz MHz Reflected wave signal suppression 1,3 µs ... 6,0 µs after main pulse (test pulse 250 ns, carrier frequency 37,40 MHz) Feedthrough signal suppression 1,3 µs ... 1,2 µs before main pulse (test pulse 250 ns, carrier frequency 37,40 MHz) ∆τ Group delay ripple (p-p) 35,32 ... 38,90 MHz Impedance at 37,40 MHz Input: ZIN = RIN || CIN Output: ZOUT = ROUT || COUT — TCf Temperature coefficient of frequency 4 — Jan 27, 2003 –72 SAW Components K 7257 M IF Filter for Video / Multistandard Applications Data Sheet Frequency response in B/G, L/L’ mode 5 Jan 27, 2003 33,90 MHz and 38,90 MHz SAW Components K 7257 M IF Filter for Video / Multistandard Applications Data Sheet Frequency response in B/G, L/L’ mode Time domain response in B/G, L/L’ mode 6 Jan 27, 2003 33,90 MHz and 38,90 MHz SAW Components K 7257 M IF Filter for Video / Multistandard Applications Data Sheet Frequency response in M/N mode 7 Jan 27, 2003 33,90 MHz and 38,90 MHz SAW Components K 7257 M IF Filter for Video / Multistandard Applications Data Sheet Frequency response in M/N mode Time domain response in M/N mode 8 Jan 27, 2003 33,90 MHz and 38,90 MHz SAW Components K 7257 M IF Filter for Video / Multistandard Applications 33,90 MHz and 38,90 MHz Data Sheet Published by EPCOS AG Surface Acoustic Wave Components Division, SAW CE MM PD P.O. Box 80 17 09, 81617 Munich, GERMANY EPCOS AG 2003. Reproduction, publication and dissemination of this brochure and the information contained therein without EPCOS’ prior express consent is prohibited. 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. 9 Jan 27, 2003