this information contained herein is the exclusive property of abilis systems and shall not be distrib uted, reproduced, or disclosed in whole or in part without prior written permission. subject to change without notice. . copyright ? 2009 abilis systems sarl. all other tra demarks mentioned in this document are trademarks o f their respective owners. abilis systems sarl, 18, chemin des aulx , ch-1228 plan-les-ouates, geneva, switzerland - http://www.abilis.com as 44cc37x product family - rev 1.0.0 C sept 1 st 2009 audio/v ideo rf modulators as44cc37x overview the abilis as44cc37x rf modulators can be programmed through a high speed i 2 c interface to support pal, secam or ntsc standards. they are designed for use in set-top boxes and similar devic es. they are the latest generation of the legacy mc44bs37x family of devices from freescale and are software compatible, providing straightforward transition for system upgrades. the as44cc37x devices are offered in an industry- standard 16-pin soic rohs-compliant package. applications ? set-top box, iptv box ? vcr, dvd players ? game consoles benefits ? new generation of industry leading product family, based on cost effective cmos process. ? extremely low bom : o reduced board space o simplified pcb layout and manufacturing o simplified sourcing ? shorter time to market : o functional equivalent to industry standard devices o backward software compatibility with legacy products o available evaluation board and reference design fig 1 : as44cc373 functional block diagram features ? multi standard support : ntsc, pal, secam (b/g, i, d.k, l, m/n) ? uhf operation (460 C 880 mhz) ? on chip tank circuits C no external varicaps, inductors or tuned components required. ? program control via 800 khz i 2 c bus . ? programmable sound reference frequency (31.25 or 62.5 khz) ? direct sound modulator input (fm or am) ? auxiliary input bypassing am/fm modulators for nicam or btsc applications ? video modulation depth (96% typical in system l, 83% typical in the other standards). ? programmable peak white clip. ? on-chip video test pattern generator with sound test signal (1 khz). ? low power stand-by mode. ? output inhibit during pll lock-up at power on. ? logical output port controlled by i2c.
this information contained herein is the exclusive property of abilis systems and shall not be distrib uted, reproduced, or disclosed in whole or in part without prior written permission. subject to change without notice. . copyright ? 2009 abilis systems sarl. all other tra demarks mentioned in this document are trademarks o f their respective owners. abilis systems sarl, 18, chemin des aulx , ch-1228 plan-les-ouates, geneva, switzerland - http://www.abilis.com as 44cc37x product family - rev 1.0.0 C sept 1 st 2009 audio/v ideo rf modulators as44cc37x p arameter typical unit temperature range 0 - 70 o c power supply 3.3 v supply current 85 ma power consumption 28 0 mw rf output level 89 db v uhf oscillator frequency 460 - 880 mhz sound subcarrier harmonics - 63 dbc in band spurious (fo @ 5 mhz ) - 65 dbc video bandwidth 0.1 db video input level 1.0 vcvbs white peak clip 94 % video s/n 55 db differential phase +/ - 5 deg differential gain +/ - 5 % luma/sync ratio 7.0/2.8 - pal video modulation depth 83 % secam video modulation depth 96 % picture - to - sound ratio 12 or 16 db audio input resistance 71 k audio frequency response - 2.5/+2.0 db audio distortion fm (thd only) 0.5 % audio distortion am (thd only) 1.5 % audio s/n with sync buzz fm 54 db audio s/n with sync buzz am 50 db fig 2: evaluation board quick selection guide p/n ntsc pal secam frequency range default frequency i2c write address as44cc373 ca ef, r2 uhf 591.25 0xca as44cc373 cas ef, r2 uhf 591.25 0xce as44cc374 ca ef, r2 no uhf 591.25 0xca as44cc374 t1 a ef, r2 no uhf 871.25 0xca as44cc375 av ef, r2 no no us ch 3/4 n/a
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