written checked approved to : digital terrestrial nim with rf loopthrough revision :1.0 custom name : samsung name : TDTC9251DH01C (b/w:7,8mhz) approved by : date : apr.22.2003 add : tuner lab.,digital group,display & digital device div., samsung electro-mechanics co.,ltd, 314, maetan-dong, paldal- ku, suwon-city, kyungki-do, korea tel : 82-31-210-6615 fax : 82-31-210-6380 samsung electro-mechanics co.,ltd free datasheet http:///
1. description this terrestrial nim(network interface module) is designed for using in dvb-t system. it builts in cofdm-demod ic. it's used to a single conversion approach with the reception frequency range in vhf c5 c12 (174mhz 230mhz), uhf c21 c69 (470mhz 862mhz) band selection and tuning is done by pll ic. pll ic is controlled by the cofdm-demod ic.(external control port pins) 2. mechanical characteristics 2-1 dimensions : refer outline drawing 2-2 rf input connector : iec type, female 2-3 rf output connector : iec type, male 2-4 tuner iic connection : pins ( ref fig.1 ) samsung electro-mechanics co.,ltd. page 2/11 pin connection remark 1 n.c 2 n.c 3 n.c 4 rf agc(n.c) test point. 5 5v analog(rf block). 6 30v tuning voltage 7 n.c connected with pin 5 8 n.c 9 1'st if (n.c) test point 10 2'nd if (n.c) test point 11 digital 5v for demod ic 12 analog 5v for demod ic 13 n.c 14 analog 3.3v for demod ic 15 digital 3.3v for demod ic 16 reset reset the module. 17 error out uncorrectable block indicator. 18 frame sync mpeg out start signal. 19 valid mpeg output data valid. 20 mdclock mpeg output clock 21 ~ 28 mdo[7:0] mpeg data output. 29 sda i2c data 30 scl i2c clock
3. general characteristics 3-1 temperature range : operating temperature : 0 ~ +65 storage temperature : -40 ~ +70 3-2 test conditions : all data hold under following conditions t(amb.) : +25 2 humidity : 45 ~65 % rh supply voltage : +5v 2% rf agc voltage : +4v 2% if agc voltage : +4v 2% tuning voltage : +30v 2% 3-3 current consumption +30v(tuning voltage : pin6) : 1ma typ 2ma max. +5v(rf block) : 140ma max. +5v(if amp. with agc) : 60ma max. +3.3v( demod ic ) : 150ma max. 4. electrical characteristics 4-1 input frequency range : 174mhz 230mhz 470mhz ~ 862mhz 4-2 input signal level : -78dbm ~ -20dbm (average power) 4-3 voltage gain(1st if) : 38db typ. 35dbmin. 4-4 noise figure : 7db typ. 10db max. (at max. gain) 4-5 ofdm-demod ic : mt352 (produced by zarlink) 4-6 input impedance : 75 ? 4-7 return loss ant in ant in (174mhz 862mhz) : 5db min. loop-through out (50 ~ 862 mhz) : 5db min. 4-8 if frequency : 36.167mhz 4-9 if band width : 7,8mhz(-3db) typ. 4-10 spurious signals at input terminal local oscillator leakage : 46dbuv max. 4-11 reference pll x-tal frequency : 4mhz 4-12 phase noise @ 1khz : -75dbc/hz typ. -70dbc/hz max. @ 10khz : -85dbc/hz typ. -75dbc/hz max. 4-13 control data bus : i 2 c 4-14 control data format : refer the following i 2 cbus 4-15 rf output ripple : 4dbpp 4-16 rf output gain : 1 2db samsung electro-mechanics co.,ltd. page 3/11
4-17 image pal interference protection ratio : -49db typ. -46db min (at 2k,8k mode) note1 4-18-1 adjacent pal interference protection ratio. (n-1), (n+1) : -38db typ. -35db min (at 2k,8k mode) note1. vhf(7mhz) : t.b.f 4-18-2 adjacent dvb-t interference protection ratio. (n-1), (n+1) : -34db typ. -30db min (at 2k,8kmode) note1. vhf(7mhz) : t.b.f 4-19 co-channel pal interference ratio. ( co-channel filter on) : +1db typ. +4db min. note1. note1 : desire input signal condition : a: modulation : 64qam b: guard interval : 1/32 c: puncture rate : 2/3 undesired(analog) input signal condition : pal : video 75% color bars fm sound : 1khz tone(p/s : 13db) ( 50khz deviation, freq. p/s : 6.0mhz) adjacent channel pal interference test procedure a: use changeover switch to select power meter b: turn dvb-t source off ; adjust pal psp level to -25dbm c: turn pal off ; turn dvb-t on d: adjust dvb-t to -25dbm e: turn pal on and increase step attenuator in dvb-t channel until q.e.f. adjacent channel dvb-t interference test procedure a: use changeover switch to select power meter b: turn desired dvb-t source off ; adjust undesired dvb-t level to -35dbm c: turn undesired dvb-t sorce off ; turn desired dvb-t on. d: adjust desired dvb-t to -35dbm e: turn undesired dvb-t on and increase step attenuator in desired dvb-t channel until q.e.f. co-channel pal interference test procedure a: use changeover switch to select power meter b: turn pal source off ; adjust dvb-t level to -50dbm c: turn dvb-t off ; turn pal on d: adjust pal to -50dbm e: turn dvb-t on and increase step attenuator in pal channel until q.e.f. samsung electro-mechanics co.,ltd. page 4/11
4-20 active white gaussian noise condition. at qef. : 17.4db typ. 18.4db max. (64qam, 2k,8k mode, code rate:2/3, input level:-50dbm) : 22.5db typ. 23.5db max. (64qam, 2k,8k mode, code rate:7/8, input level:-50dbm) 4-21 sensitivity condition. at qef :-80dbm typ. -77dbm max.(64qam, 2k,8k mode, code rate:2/3,guard interval 1/32) :-73dbm typ. -70dbm max.(64qam, 2k,8k mode, code rate:7/8,guard interval 1/32) 4-22 multipath channel interference (64qam, 2k, 2/3code rate, 1/32g.i) short echo : 20.2db max long echo : 22.2db max short delay parameter long delay parameter 5. tuner pll programming 5-1. bit allocation write/read byte msb ? bit6 bit5 bit4 bit3 bit2 bit1 lsb ack remark write data address byte 1 1 0 0 0 ma1 ma0 0 a divider byte1 0 2 14 2 13 2 12 2 11 2 10 2 9 2 8 a divider byte2 2 7 2 6 2 5 2 4 2 3 2 2 2 1 2 0 a control byte 1 cp t2 t1 t0 rsa rsb os a bandswitch byte 0 0 0 0 p3 p2 p1 p0 a read data address byte 1 1 0 0 0 ma1 ma0 1 a status byte por fl 1 1 agc a2 a1 a0 a ? msb shifted first. path delay(us) relative attenuation(db) 1 0 2.8 2 0.05 0 3 0.4 3.8 4 1.45 0.1 5 2.3 2.6 6 2.8 1.3 samsung electro-mechanics co.,ltd. page 5/11 path delay(us) relative attenuation(db) 1 0 0 2 5 9 3 14 22 4 35 25 5 54 27 6 75 28
5-2. description of symbols ma1 and ma0 : programmable address bits (refer 5-3) 2 14 -2 0 : programmable division ratio control bits n: programmed division ratio fo=n*(fx/nref) fo : local osc frequency, n=fo*(nref/fx) fx : x-tal osc frequency nref : reference osc divided ratio cp : charge-pump current selection (refer 5-5) t0,t1,t2 : test bits extended mode, charge pump current 50 and 250ua selectable : t2,t1,t0 = 1,1,0 extended mode, charge pump current 125 and 650ua selectable : t2,t1,t0 = 1,1,1 rsa,rsb : reference division ratio selection (refer 5-4) os : tuning amplifier control bit bit=0 : enable vt bit=1 : disable vt p3,p2,p1,p0 : band selection port (refer 5-6) por : phase lock flag a2,a1,a0 : adc data x : don't care 5-3. address selection as input voltage level ma1 ma0 (0 ~ 0.1) * v vcc 0 0 open circuit 0 1 (0.4 ~ 0.6) * v vcc 1 0 (0.9 ~ 1) * v vcc 1 1 samsung electro-mechanics co.,ltd. page 6/11
5-4. reference divider ratios (4mhz x-tal external reference) ratio f ref mode t2 t1 rsa rsb 24 166.7khz x x x 1 0 64 62.5khz x x x 1 1 32 125khz extended 1 1 0 0 28 142.9khz extended 1 1 0 1 t0,t1,t2 : test bits extended mode, charge pump current 50 and 250ua selectable : t2,t1,t0 = 1,1,0 extended mode, charge pump current 125 and 650ua selectable : t2,t1,t0 = 1,1,1 rsa,rsb : reference division ratio selection (refer 5-4) os : tuning amplifier control bit bit=0 : enable vt bit=1 : disable vt p3,p2,p1,p0 : band selection port (refer 5-6) por : phase lock flag a2,a1,a0 : adc data x : don't care 5-5. charge pump current mode cp t2 t1 t0 50ua extended 0 1 1 0 125ua 0 1 1 1 250ua 1 1 1 0 650ua 1 1 1 1 vhf uhf 50ua extended center frequency 125ua 174~230mhz 471~600mhz 250ua 601~730mhz 650ua 731~860mhz samsung electro-mechanics co.,ltd. page 7/11
5-6. band selection port band p3 p2 p1 p0 vhf 0 0 1 0 uhf 1 0 0 0 5-7. example for the i2c data stream to pll frequency address 177.5mhz 666mhz 850mhz write registor(pll) data(hex) data(hex) data(hex) address byte 0x58 c 2 c 2 c 2 progr. divider byte 1 0x59 0 5 1 0 1 4 progr. divider byte 2 0x5a 0 2 7 5 c 5 control byte 1 0x5b b 4 f 4 f c control byte 2 0x5c 0 2 0 8 0 8 5-8. i 2 c bus data format sda data scl 12345678910 44 time msb lsb data a data 1 byte msb n byte lsb data a 45 samsung electro-mechanics co.,ltd. page 8/11
6. safety and reliability no item test conditions specifications 6-1 cold test -40 ,168 hr gain variation : 3db wave variation : 30% local oscillator drift : vhf low : 15khz vhf high : 45khz uhf : 75khz 6-2 high temperature load test +80 ,168 hr ,b+ 6-3 humidity test +40 ,95%rh , 168 hr 6-4 humidity & temperature load test +40 ,95%rh , 168 hr ,b+ 6-5 pct test pressure 2.07 K / ? , 121 100%rh , 24hr 6-6 vibration test frequency ranging from 5 to 55hz, amplitude 2 L , 40 minutes in each direction of x,y,z. 6-7 static electricity test . apply 8 ? standard pulse 3 times at ant. . apply 2kv standard pulse 3 times at another pin. 6-8 esd protection .the tuner contains components that can be damaged by static discharge. .observe these precautions. .ground yourself before handling the tuner. .do not touch the tuner connector pins without esd protection. samsung electro-mechanics co.,ltd. page 9/11
pll ic cofdm demod ic external i2c bus line sda scl pin 30 pin 29 0 0 pll_i2c ck pll_i2c data fig.1 i2c bus mode pll ic ofdm demod ic pll_i2c ck pll_i2c data 1 10987654 32 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 mpeg trans. demux. .... 33v 470 f + basic circuit connect pin diagram to reduce voltage source noise. i) adding capacitor(10n~100n), inductor.. ii) ground should be seperated by the other digital noise. fig.4 connect diagram anal(rf) 5v 470 f + .... samsung electro-mechanics co.,ltd. page 10/11
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