the SL1455 is a wideband fm demodulator with threshold extension. it is intended for use in satellite receivers with an ifbetween 300mhz and 700mhz. featuresn 7db noise threshold obtainable n low external component count n negligible differential gain and phase error n wide operating frequency range: 300 to 700mhz n demodulates fm signals with up to 28mhz p-pdeviation n electrostatic protection * * normal esd handling precautions should be observed applicationsn dbs receivers n wideband data communications demodulation SL1455 wideband linear fm detector with threshold extension 2036-2.2 fig. 2 block diagram demodula t o r rf input f in 3 14 8 7 quadra ture connections video amplifier 11 video output 4 v cc 1, 2, 5, 6, 9, 10, 13 0v osc 42 4 tuned circuit 12 v cc f in 2 f in 4 2 10 c to 1 80 c 7v 25v p-p 2 55 c to 1 150 c 1 175 c absolute maximum ratingsoperating temperature range supply voltage input voltage storage temperature junction temperature ordering information SL1455 na dp (14-lead plastic dil package) SL1455 na mp (14-lead miniature plastic dil package) fig. 1 pin connections - top view (not to scale) rf input0v v cc video output0v 0v 0v0v v cc 0v0v 12 3 4 5 6 7 1413 12 11 10 98 SL1455 oscilla t o r tuned circuit quadra ture network 0v0v v cc 0v0v oscilla t o r tuned circuit rf input0v v cc video output0v 0v quadra ture network sl 1455 12 3 4 5 6 7 1413 12 11 10 98 mp14 dp14
2 SL1455 electrical characteristics these characteristics are guaranteed over the following conditions (unless otherwise stated): t amb = 1 25 c, v cc = 1 45v to 1 55v. conditions value typ. max. min. units pin supply voltagesupply current differential gain differential phase if range input level noise threshold output level intermodulation products video bandwidth v cc = 5v d f = 214mhz p-p. demodulated staircase referred to input staircase before modulation.demodulated colour bar waveform referred to waveform before modulation. see note 1 d f = 214mhz p-p see note 2 v ma % deg mhz mvrms db v p-p db mhz 55 35 700400 12,412,4 1411 11 45 25 300 50 30 ,6 1 ,6 1 610 22 7 13 2 60 10 fig. 3 typical application: 612mhz threshold extended demodulator notes1. all characteristics from noise threshold to video bandwidth are measured using the application circuit fig. 3. 2. signal 1: 4433mhz, deviation = 214mhz p-p.signal 2: 6mhz, deviation = 3mhz p-p (pal and sound subcarriers). 10k SL1455 12 3 4 5 6 7 1413 12 11 10 98 v cc 15v 100 1n 47 1n 27p video output rf input 1n 56p 60n 40n 330 characteristic
3 SL1455 notes
4 SL1455 package details dimensions are shown thus: mm (in) 051 (002) min 038/061 (0015/024) 508/(020) max 2032 (0800) max 711 (028) max 14-lead plastic dil e dp14 1 14 305 (0120) min pin 1 ref notch 023/041 (0009/0016) 762 (03) nom ctrs this package outline diagram is for guidance only. please contact your gps customer service centre for further information. 14 leads at 254 (010) nom. spacing 114/165 (0045/0107) 035/049 (0014/0019) 380/400 (0150/0157) 580/620 (0228/0244) 856/875 (0337/0344) 14 14-lead miniature plastic dil - mp14 14 leads at 127 (0050) nom spacing 069 (0027) max 010/025 (0004/0010) 135/175 (0053/0069) spot ref. chamfer ref. 037 (0015) 3 45 019/025 (0007/0010) 0-8 041/127 (0016/0050) pin 1 this package outline diagram is for guidance only. please contact your gps customer service centre for further information. headquarters operationsgec plessey semiconductors cheney manor, swindon, wiltshire sn2 2qw, united kingdom. tel: (01793) 518000 fax: (01793) 518411 gec plessey semiconductors p.o. box 660017 1500 green hills road, scotts valley, california 95067-0017, united states of america. tel: (408) 438 2900 fax: (408) 438 5576 customer service centres ? france & benelux les ulis cedex tel: (1) 69 18 90 00 fax : (1) 64 46 06 07 ? germany munich tel: (089) 3609 06-0 fax : (089) 3609 06-55 ? italy milan tel: (02) 6607151 fax: (02) 66040993 ? japan tokyo tel: (03) 5276-5501 fax: (03) 5276-5510 ? korea seoul tel: (2) 5668141 fax: (2) 5697933 ? north america scotts valley, usa tel (408) 438 2900 fax: (408) 438 7023. ? south east asia singapore tel: 3827708 fax: 3828872 ? sweden stockholm tel: (8) 702 97 70 fax: (8) 640 47 36 ? taiwan, roc taipei tel: (2) 5461260. fax: (2) 7190260 ? uk, eire, denmark, finland & norway swindon tel: (01793) 726666 fax : (01793) 518582 these are supported by agents and distributors in major countries world-wide.? gec plessey semiconductors 1996 publication no. 2036 issue no. 2.2 july 1996 technical documentation - not for resale. printed in united kingdom. this publication is issued to provide information only which (unless agreed by the company in writing) may not be used, applied or reproduced for any purpose nor form part of any order or contract nor to be regarded as a representation relating to the products or services concerned. no warranty or guarantee express or implied is made regard ing the capability, performance or suitability of any product or service. the company reserves the right to alter without prior notice the specification, design or price of any product or service. information con cerning possible methods of use is provided as a guide only and does not constitute any guarantee that such methods of use will be satisfactory in a specific piece of equipment. it is the user's responsibility to f ully determine the performance and suitability of any equipment using such information and to ensure that any publication or data used is up to date and has not been superseded. these products are not suitable for use in any medical products whose failure to perform may result in significant injury or death to the user. all products and materials are sold and services provided subject to the company's conditions of sale, w hich are available on request.
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