TA8804F

TA8804F TOSHIBA | Alldatasheet

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TECHNICAL DATA SILICON MONOLITHIC FM DEMODULATION IC FOR BROADCASTING SATELLITE RECEIVER The TA8804F combines the necessary function on a single monolithic integrated circuit to modulate FM signal of the 2nd IF of DBS. FEATURES i ae ® SV Power Supply Neuen eee : OS se @ and IF AGC Amp @ dB-Linear Signai Level Amp ® PLL FM Detector SSOP30-P-375, «Keyed AFT Weight . 0.639 (Typ) ® ‘re Oban pone, cine ‘oro grt comes ert Bae Bane commenaseon enue mre ° 1996 = 4-22 TERN SOS Phage gusts anor recs una Io ‘eavrinent eS a ee er eppieston mace Ot TOSHIBA CORPORATION (erinnaa to yum ne at nome ey conte, nine mac turernon. alt aaa, mrt AS wr SN Ser il re of sey nin TONNE CaM ere camaate mince “ews

INTEGRATED CIRCUII | TASSO4F TOSHIBA TECHNICAL DATA | BLOCK DIAGRAM sv art 2ng IF inpet peace sv att Output AFT Output Signal Leves _Y AT | @igtahtanatog) (P)_ vo vo [im acc sie sv iota Capacnor AFT Biter Adjustment (comer : ; WAGE [savant ne) | Comrei ono AFT Center : /\\ /\\ sample /\\ ' | jane noid} || i i ‘ : Hy t . ' : jina ! H ia oe t potheccccnnneent ‘ [| : ee) AFT Fuiser \\ i rsd i ‘ 1 Amp /\\ ; ! Art fre amp. PLLAFM, Derecxor a ee Koroggene pore Det Pre. Amp. i — ; Mer <S | gf com | 14 2000 : ot veco am || i po) | /\\ ; | Tr, oor ory Te Y.Y © i roy vdeo Anphfier vee sv ” eyed 8 detect Cutout MRS oop futer —GHD__VCO Tank Exeus aarcienent Fer Pul input TASSOAF — 2 1996 -4~22 - TOSHIBA CORPORATION

TOSHIBA | TA8804F TECHNICAL DATA TERMINAL FUNCTION nN PIN NAME FUNCTION INTERFACE CIRCUIT It clamps at the pulse peak f and generates the reference level. a | The input impedance is 3kQ. : le If any keyed pulse input, @ Cy 4 1 | Keyed Pulse Input Keyed pulse : low level S008) B sample state | S - Keyed pulse : high level | = hold state | o) @ If no keyed pulse input, sample state at al! time ” S = @ it outputs the detection 2 = 22 2 output through a low-pass “ = 3 [Detect Output filter of 30MHz cut off 30 frequency using an emitter 4 follower, \\ @ ME | |” fit controls the level | adjustment by varying the a ig emitter resistance of a e | . = 28 Erte | differential amplifier. Po To.ased | . 7 if the resistance between pins | : | 4 |Video Amplifier i + i . 4 and 5 is reduced the output rs ¥ 5 {Level Adjustment . . | 2 Vel will be greater, however, since 4 +3) the output dynamic range is ; a) ot x narrow the output level should be used in the range of lower than 0.7Vp.o. [J ‘Trea. | The output impedance is ‘al, 6 2000. | | 7 [boop Filter In the application circuit, @) i) : (3) w= 174MHZ | ) | | | anp TA8804F —3 1996 — 4-22 TOSHIBA CORPORATION

it is the GND of VCO circuit blocks that are VCO (pins 9, 10, 12), loop filter (pins 6, 7), 8 |GNo1 video amplifier (pins 4, 5) AFT system (pins 1, 22, 24, 25, 26, 27, 28) and $/H (pins 29, 30). iv H & GS | a 3 &. it is the VCO using variations * <= in internal impedance of [it diode for control voltage from E 9 + mixer. } Ag] Contrat

10 VEO Coil Use a UI characteristic for the | @ =— 9

capacitor of the external tank | ot circuit to correct the internal | 2 temperature drift. | A SF T- x The VCO bias is composed of a synthesis of bias in proportion to Vge and VT of ®

12 M60 Temperature |Sereraes@ bias proportioned crt

Compensate Bias 19 'a5 proportion: to the VgE- | @ veo 8 If the external resistance ‘- reduced, the VCO sensitivity will rise. ” It changes the input level for a AGC detector. It adjusts by ond AGC adding the direct current off-

13 Adjustment set to pins 14 and 15, The @

} variation width of about 8dB wee can be added. ® ; internal bias is 2.5V. TA8804F — 4 1996 -4~22 TOSHIBA CORPORATION

INTEGRATED CIRCUIT TASSO4E TECHNICAL DATA No PIN. NAME [_funcnon | INTERFACE CIRCUIT | | ' i It generates the AGC voltage @ “ El | iD) by filtering the 402.78MHz werheoa | (479.5MHz) IF signal by means fon 14 of an internal resistance and 45 2nd AGC Filter an external condenser. If HD applying the Vcc to pin 15, the AGC will be minimum S © iS 4 gain and the VCO oscillates at 38 T 32 : free-running frequency. + | It sets the input jevel threshold for generating the control signal to lower gain from the IC to the and ist AGC Slice converter of front stage when 16 . [an : ® Adjustment excessive input. Even if the | § 2nd AGC adjustment varies, | ’ o T the 1st AGC adjustment point hardly changes. The internal bias is 2.5V. It outputs by comparating @ with the AGC and ist AGC slice level adjustment voltages. - This comparator is constructed @ 17 | ist AGC Filter by the active load type high = | gain amplifier and determines its response by a capacitor @2| @ eo connected to this terminal. t { ‘ It outputs the control voltage : | using an emitter follower ‘ AGC CG 1 . - - 18 | 1st ontral (active low level). The internal < current sink has only 25nA. Py ee TA8804F - 5 1996 ~ 4-22 TOSHIBA CORPORATION

TOSHIBA CIRCUIT | TABBO4E wae eee] It outputs the AGC voltage by to | doing logarithm <-> linear conversion. In the TA8804F the 19 |Signai Level Out level detection can be carried ® out even after the ist AGC is effective and input is reduced using the 1st AGC output. The If amplifier constructed by ~ the 3-step series connection of | variable gm type gain control, | of which the maximum gain is | 47dB and minimum gain — | 20 8dB. In order to prevent a P| 2 2nd IF In sneak of radio frequency all 6 re) the circuits are balance- PZ #8 connected. Therefore, the 2 |_| s differential combination is also aeons # $. desirable for the IC input. The Q-+— Rs internal bias is 2.0V and input impedance 1kQ. It outputs by integrating the detection output by means of |

23 AFT Qutput pin 27 and 28 filters, doing © | ae-;,

(Analog) center adjustment and e multiplying about five times as much. aa TA8804F - 6 1996 -— 4-22 TOSHIBA CORPORATION

TOSHIBA | TA8804F TECHNICAL DATA PIN NAME INTERFACE CIRCUIT It outputs by converting the analog AFT output to binary with a comparator. in the case of center detection, the each 24 |AFT Output output will be high level. The 2O 4 . 3 Fa 25 | (Digital) width of dead gone is { 7 determined by the internal | threshold and VCO sensitivity, | 2H that cannot be adjusted To externally. It moves the AFT center frequency in the width of @ % AFT 26 . Center 4OMHz and absorbs the center S208, Adjustment . + {gap caused by dispersion of each AFT circuit. | ve ts It constructs a filter whose cut 7. = off frequency is less than 1H2 @ =) 27 a (capacitor ; 0.7Hz at 0.i4F) 5G [xo | Fil Lea %o 28 AFT Fiker with an internal 1.1MQ resistance and external OROROMO) condenser. Sample and hold by charge/ ® il ® 29 | . discharging the condenser E82 29 Id Ce 30 [He ‘apacitor using the switching signal : regenerated by keyed pulse. 5 ORO) ® TAS804F—7 1996 — 4-22 TOSHIBA GORPORATION

INTEGRATED CIRCUIT | TAS8O04F TOSHIBA TECHNICAL DATA MAXIMUM RATINGS (Ta = 25°C) CHARACTERISTIC UNIT Power Supply Vorage ®p max | 1000 | wav | Operation Temperature | Tow | 20-78 | “| liead Temperature” |__| 20°C, Tos Recommended assembly method : Recommended temperature profile of reflow soldering of far and medium infrared rays

240 Pewe canner n nH }

. hbok gd % iso Pia E Pid odd i Porob 4 hori more than 60s vetmn 10s tune (5) withan 305 RECOMMENDED POWER SUPPLY VOLTAGE bin ee TA8804F -8 4996 —4—22 TOSHIBA CORPORATION

INTEGRATED CIRCUI! - TASSO4F TOSHIBA TECHNICAL DATA

ELECTRICAL CHARACTERISTICS

DC CHARACTERISTICS (Unless otherwise specified, Vec =5.0V, Ta =25°C) opp Cone ee Sas a nT a Ss [Ping | OE) [Fins | cosas | 8 | ine er eee a ed aa a aa or 0 Voliage ee ee Se ee ee [Pint7s1kQ-GND | fo [3 | Pint? Vee SS | aT | ee re aS sas 8 | ee Pin 2, 3 Acceptable fewer [ee Py feel = [ee | | 1'st AGC Output peseetem Ty fe) em = pe TA8804F —9 1996 — 4-22 TOSHIBA CORPORATION

CHARACTERISTIC SYMBOL CIRCUIT TEST CONDITION | min. | TYP. | MAX. iT Range 0 dBmw cect [we [|= | - [a 1st AGC Shoulder dBmw | 2 - -10 Level Range AGCMAX | (Note 1) ee 20 (800) Sensitivity dignat Level Senmtiy | aViav [2 | Wore s)_——«| = S| 60 [vi VCO Conversion 5 Converting to output rate Sensitivity 8 é Pin 4, 3 ; open / (Note 4) 110 | 130 | MH2/V pit teak Range Nate S| | re bric capture Range | fea) 2] ete | bas | a0 [| Mine | Demodulation Output Video Amplifier Pin 4, 5: short, 5kQ/ Variable Width Vous/5 |? _iqnote 8) wo] 4) Demodulation Output | Amplitude Frequency |VoutA1 | 2 #=0.2~4MHz/(Note 9) -—} 40.5 Characteristics 1 Demodulation Output Amplitude Frequency {VoutA2 f=4~9MHz/(Note 9) _ #2 Characteristics 2 Group Delay non. _ + Characteristics 1 rRd1 2 f=0.2~4MHz / (Note 9) | =| £10 | ns Group Delay 4 | | Characteristics 2 | rede 2 |f=4~9MHz/ (Note 9) eee eet ean AFT Sensitivity 77 a EI Converting to input ao Sem | ee = in Keyed AFT Input Range ‘4 0.65 | Vpp Keyed AFT Input AFT Width of Dead 2 | (Note 13) 250 | 340 | 400 | kHz Digital AFT Voltage | Low Level V20L 2 (Note 13) 03} 05) Vv pee PES meome w= 0 se circuit TA8804F - 10 1996 — 4-22 TOSHIBA CORPORATION

CHARACTERISTIC oReuit TEST CONDITION circuit application] 2.15MHz beat level / Inter-Modulation 2 IM2 tireuit. |(Note 15) 40 45 i .43MHz b t Inter-Modulation 3 img [aPplication) 1.43Mixz beat level 40} 50 circuit (Note 15) . 7 application le vanes [ere Perens | La | MEASUREMENT CONDITION (Note 1) Ist AGC Snoulder Level Range : AGCMAX F=402.78MHz input level vin =0 to - 40dBmW (500) to pin 20, Measure vin that pin 18 voltage is lower than 4V by opening pin 16 and raising vin- (Note 2) Ist AGC Contro! Sensitivity : AAGC input f=402.78MHz vin = O~ — 40dBmW (50Q) to pin 20. Calculate vin that pin 18 voltage is AV /1V (a5 Vint. Vin). using the equation below. AAGC= —3/(V¥jini- Ving) V/aB (Note 3) Signal Level Sensitivity : aV/av Measure each output voltage of pin 19 at vin = -40, — 60dBmWw (502) AV/aV = (V_g0-V—40)/20 mv/dB (Note 4) VCO Conversion Sensitivity : 8 Input mainly f=402.78MHz and sweep + 5MH2, vin = —30dBmW (502) to pin 20. Calculate # = 10/(vdet 4 5 -Vdet—5) and multiply the gain portion (2.66) of video amplifier when outputting a direct current voltage to pin 3 at 407.78MHz, 397,78MHz as Vdet+ 5 and Vdet_5 each (Note 5) VCO Temperature Drift : 4fTa Short pin 6 and 7, and connect pin 14 to GND. Measure the VCO frequency at ambient temperature Ta=25°C, - 10°C +65°C and calculate how much changes from 25°C. (read out the VCO leakage output by spectrum analyzer.) (Note 6) PLL Lock Range : fi, Capture Range : fca Measure the range that synchronizes with VCO by putting pin 20 input frequency away from the free-running frequency. TA8804F - 11 1996 -4—22 TOSHIBA CORPORATION

INTEGRATED CIRCUI! - TAS8O4F TOSHIBA TECHNICAL DATA (Note 7) Demodulation Output Level : Vout Input pin 20 f= 402.78MHz, fm # 100kHz, 4f= 10MHZp-p, Vin = ~30dBmW (500) Open pind and 5 and measure the output level of pin 3. (Note 8) Video Amplifier Variable Width : Vouts. Vout5 Input pin 20 $=402.78MHz, fry = 100KHz, af = 10MHzp-p, vin = ~30d8mW (502) Measure the variation of video output by shorting between pin 4 and 5 and connecting 4 5kQ resistance. (Note 9) Demodulation Output level Width, Group Delay Characteristics = Vouta. 7Pd Input pin 20 f=402.78MHz, fp = 100kHz, 60Hz to 4MHz to 9MHz, Af =5MHZp-p, Vin = — 30dBmWw (S00) Compare to the value at 100kHz by opening pin 4 and §, and measuring the output level and group delay of pin 3. (Note 10) S/H Sample Speed : 4fspi Input the signal 1 below for a modulation signal. Input the signal 2 below to pint. Observe the differential voltage waveform between pin 29 and 30, and measure the slew rate in the sampling period, sgnal 1 signet 2 | [ose 206 2s ~~ (Note 11) Keyed Pulse Allowable Period : 14 Input the signal below to pin 1 and open pin 27 and 28. Observe the pin 23 output and change f so 2s to be 2.5V voltage. signal 3 25Vpp a es a~100ms a Measure the frequency range in which a 2kHz sine wave does not output to pin 23, by changing the signal 3 period. If the sample-hold circuit malfunctions, the 2kH2 sine wave will be outputted from pin 23. TA8804F = 12 1996 — 4 - 2: TOSHIBA CORPORATION

GRATED CIRCUIT | ; TOSHIBA. TA8804F TECHNICAL DATA (Note 12) AFT Sensitivity : 4f/4V23 Input pin 20 f=402.78MH2 = IMHz, Vin = — 30dBmW (502) Adjust f so that pin 23 output will be 2.5V. By moving f up. and down, calculate each frequency as fy, f, when pin 23 voltage varies 0.5V using the foliowing equation. af/aV23 =fy-fL (MH2/V) (Note 13) AFT Digital Qutput Width of Blind Sector : fpgaD Input pin 20 f= 402.78MHz = SMHz, vin = — 30dBmW (50D) Measure the input frequency range in which both pin 24 and 25 become high level, by sweeping f. pin 24 Qutput waveform : pn 25 output waveform asenstivd a rreauency sae (Note 14) DG, DP : Input pin 20 f=402.78MHz £5MHz, vin = — 30dBmW (500), af= 17MHzp.p, Gray level video signal (APL : 10~-90%)>+ Pre-emphasis-on (Note 15) IM2, IM3 Input pin 20 7=402.78MHz +5MHz, vin = — 30dBmW (509), af = 17MH2p-p. Color subcarrier (3.579MHz), Sound subcarrier (5.7272MHz) ~~ Observe the frequency component outputting to the screen output pin {pin 3) through the video gate of a video noise meter by spectrum analyzer, and measure the level difference between 3.579MHz component and 2.15MHz, 1.43MHz components. TA8804F — 13 1996 - 4 — 22 TOSHIBA CORPORATION

EGRATED CIRCUIT _ TOSHIEA TABSOGF TECHNICAL DATA TEST CIRCUIT 1 DC characteristics ts fs FS Ts OO MOMOMO MGM OMOMOM OM OME MIC EC BEC) Lio ba TEST CIRCUIT 2 AC characteristics bo c 0.047 xf ie BS S * fe 7 a 3 5 a Om OM OM OM OME OM OMIO MOM CREO IAC MES MASE 2 dichYg| Ole ls 7G 3 6 oH i = = Fa hd = 3 Te = C.01 uF b EF sv ~ TAB804F - 14 1996 —4—22 TOSHIBA CORPORATION

INTEGRATED CIRCUIT TA8804F TOSHIBA TECHNICAL DATA ee KR 340 0 2 »f e25825 23

27190 BEVSEVERS

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a == @ TABBO4F - 15 1996 —4—22 TOSHIBA GORPORATION

$S0P30-P-375 Unit : mm 30 16 oonggganenAaadad SRIRIRERISDRDMEMERROLELDERE a | = 5 co) ml Ss 2 MoOoNO HUTCH i WoOooOBWOOUE HoHood 1 15 g.7tve | | | 0.420.1 Bose 18.9MAX i 15,420.2 . | Sx at WED & Oo bad bar 0.9220.2 s Weight : 0.639 (Typ.) TAB804F - 16* 1996 ~ 4-22 TOSHIBA CORPORATION