12730 commonwealth drive ? fort myers, florida 33913 phone: 239-561-3311 ? 800-237-3061 fax: 239-561-1025 ? www.crystek.com crystek corporation crystek?s model CCHD-957 hcmos clock oscillator family has been designed specifically for high definition audio (hd audio). it features a typical low close-in phase noise of -100 dbc/hz @ 10 hz offset, and a noise floor of -169 dbc/hz. with this extreme low phase noise performa nce, you will ?hear the difference?. it also features a ?standby function?, that is, when placed in disable mode, the internal oscillator is complete ly shut down in addition to its output buffer being placed in tri-state. this family is housed in a 914 mm smt package and operates with a +3.3v power supply. date: 22-jan-12 rev: d page 1 of 2 914 mm smd, 3.3v, hcmos CCHD-957 model 49.152 mhz hcmos 3.3v 45.1584 mhz hcmos 3.3v - 17 0 d b c / h z - 1 6 9 d b c / h z digital audio broadcasting (dab) professional cd audio equipment dacs and adcs for hd audio 22.5792 mhz hcmos 3.3v 24.576 mhz hcmos 3.3v - 9 7 d b c / h z applications include: - 1 0 0 d b c / h z
frequency range: 10 mhz to 50 mhz temperature range: 0c to +70c (option m) -20c to +70c (option x) -40c to +85c storage: -45c to 90c input voltage: 3.3v 0.3v input current: 15ma typ., 25ma max input current (disabled mode): 1.5ma max output: hcmos symmetry: 45/55% max @ 50%vcc rise/fall time: 3nsec max @ 20% to 80% vcc logic: ?0? = 10% vcc max ?1? = 90% vcc min load: 15pf output current: 24ma max disable time: 200ns max start-up time: 1ms typ., 2ms max pin 1 disable current: -350a max phase noise: -100 dbc/hz typ., -9 5 dbc/hz max at 10hz offset phase noise floor: -169 dbc/hz typ., -165 dbc/hz max sub-harmonics: none aging: <3ppm 1 st /yr, <1ppm thereafter CCHD-957 options: temperature range: 0c to +7 0c (20ppm, 25ppm, 50ppm) -20c to +70c (25ppm, 50ppm) -40c to +85c (25ppm, 50ppm) part number example: CCHD-957x-25-49.152 = 3.3v, 45/55, -40c to +85c (25ppm), 49.152 mhz recommended reflow soldering profile 217c 200c 260c 150c 90 secs. max. temperature ramp-up 3c/sec max. preheat 180 secs. max. 8 minutes max. 260c for 10 secs. max. critical temperature zone ramp-down 6c/sec. note: reflow profile with 240c peak also acceptable. suggested pad layout 0.280 (7.11) 0.050 (1.27) 0.090 (2.28) 0.200 (5.08) 12730 commonwealth drive ? fort myers, florida 33913 phone: 239-561-3311 ? 800-237-3061 fax: 239-561-1025 ? www.crystek.com crystek corporation pad connection 1 2 3 4 e/d gnd out vcc date: 22-jan-12 rev: d page 2 of 2 914 mm smd, 3.3v, hcmos CCHD-957 model 0.360 (9.14) 0.560 (14.2) crystek CCHD-957 frequency date code 0.200 (5.08) 0.040 (1.01) 0.070 (1.77) 1 3 4 2 function pin 1 output pin open "1" level 0.7 vcc min "0" level 0.3 vcc max active active high z tri-state/standby function developed frequencies 22.5792 mhz 24.576 mhz 45.1584 mhz 49.152 mhz 0.210 (5.3) 0.560 (14.2)
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