LC7020AK SANYO | Alldatasheet
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** CMOSLSI No. 2783 LC7020AK, 7020BK SANYO Controller for PLL Frequency Synthesizer The LC7020AK, BK are controllers for direct PLL ICs LM7000, LM7001. They can be used to form a PLL frequency synthesizer (without clock, 4 bands) for car use. 1, Functions and Features (1) Receiving frequency Step Tapan 760 io 90.0 Mi 100 ki FM 87.5 to 108.0 MHz 100 kHz 100 kHz +10.7 MHz ~ 530 10 1620 kHz. 10 kHz 531 10 1620 kHz FM 87.5 to 108.0 MHz 25 kHz 25 kHz +10.7 MHz 50 kHz 50 kHz +10.7 MHz Europe 531 to 1620 kHz 153 to 281 kHz 5940 to 6210 kHz (2) Channel Selection Method (Sawtooth wave mode: ad eal ) * MANUAL Up/down + SEEK Up/down + SCAN 5-second hold (up only) + Preset memory call by 1-button or 6-button method (3) PRESET MEMORY Last channel memory provided for each band (4) LOC/DX, METAL, MONO/STEREO, LOUDNESS, DNR Control provided for each (5) Control provided for SK search (Europe only) (6) LCD display 1/2 duty, 1/2 bias (7) On-chip frequency for tracking adjust SANYO Electric Co.,Ltd. Semiconductor Business Headquarters TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110 JAPAN 5188TA,TS No. 2783-1/22
LC7020AK,7020BK : Package Dimensions —3057-Q64AIC Package Dimensions 3026B-Q64BIC (unit: mm) . (unit: mm) 14.0 14.0 10 0.8 935 10, He 08 se Jona. 2 |= TD cm l WILMA ao _| f » == =— = = = | LC7020AK eS 8 LS LC7020BK = a ——a = = = O- = = ATT a ba Tf A WOU UOUU OCU O OGY I l SANYO: QIP64A 2.15 SANYO: QIP64B 72.15 2. Pin Assignment 43 47] 46 45] 46] 43 | 42{ 41 4039 |38 | 37] 36] 35] [33 @revreegeeaoannosa DHBDERBBEFGRGEHDGEOSD 49 2 sig sz 50. $20 si 3 sa] S22 come Fe 3a] 823 TAPE a} S24 sko [22 Sy com LC7020AK, BK amure LE 3] RES one f2 | St OlP64 A, B CRO FS 3] “! cal ES wy] 2 xo Fo) 3 K3 Ee a4 6 xt 0° 3 62 eo Yoo Fg 63] veo Fg Loud ¥ Sy Mo adr tesr 7 Tee Bb oesernesEakue SERV SLL TSP eR sa ee P23] 4757517 [ele popu |iztispiafisfie 0.6 OPEN No. 2783-2/22
LC7020AK,7020BK 3. Maln Specifications Absolute Maximum Ratings /Ta = 25°C, Vpp =0V [Parameter [Symbol] Conditioning [———S~d Sr] ‘| Maximum Supply Voltage Vss -5.5 10 +0.3 Vv Maximum Applied Voltage Vicp | Vicp -5.5 to +0.3 Vv Maximum Input Voltage Vin K1-K8, pins 12-15, INT, RES, V55-0.3 to +0.3 Vv TEST1-2, XI, CRI, pins 62-64, METAL, TAPE Maximum Output Voltage Vour | Pins 8-11, 1, pins62-64, Vss-0.3 to +0.3 Vv pins25-27, CRO, pins 12-15, XO, COMI, COM2, $1-S24 Operating Temperature Topr -30 to +70 °C Storage Temperature Tytg -55 to +125 °C Allowable Operating Conditions /Ta=-30 to +70°C, Vpp=0V [Parameter [Symbol] ____Conditions/Ping [main | yp _max_]_unit] Supply Voltage Vss -5.25 -3.5 Vv "H"-Level Input Voltage Vint NT 0.3Vsg 0 Vv "L"-Level Input Voltage Vai }K1-8, INT, TAPE Vss 0.7Vs5 | V “H"-Level Input Voltage Van i RES 0.25V 55 0 Vv "L"-Level Input Voltage Vaz Vsg 0.75Vss|_ V Operating Frequency fopg | Vss=-5.25 to -3.5V CRI, 390 410 kHz CRO CF400kHz version, Fig. 1 ‘ Electrical Characterlstics/Ta=-30 to +70°C, Vpp=0V Parameter Symbol] ___CondionsiPins [min wp [max | uni] Input Resistance 1 Rint | Vss=-2.9V 200 2000 | kQ K1-K8 pull-down Tr Vin=Vop Input Resistance 2 Rin2_ | Vss=-2.9V TEST1, TEST2 10 400 | kQ “H"-Level Output Voltage Vou | Vss=-4V, T1-T5, Ion=-800HA -0.5 Vo | V "L"-Level Output Voltage Vou | Vss=-4V, T1-TS, Io,=800uA Vss Vsst0.5} V "H"-Level Output Voltage Vom | Vss=-4V, 1, pins 62-64 0.5 Vpp Vv Ipu=-200pA pins 12-15, . pins 25-27 . "L"-Level Output Voltage 2 Vouz | Vss=-4V, 1, pins 62-64 Vss Vs5t0.5] V Ip, =200pA pins 12-15, pins 25-27 Segment driver output impedance; "H"-Level Output Voltage 3 Vous | Vss=-2.9V, $1-S24, Ioy=-0.4uA -0.2 Vpp Vv “L".Level Output Voltage 3 Vous | Vss=-2.9V, $1-S24, lo =0.4uA Vss Vegt0.2} V "H"-Level Output Voltage 4 Vous | Vss=-2.9V, COMI, 2, lon=-4uA -0.2 Vpp v "M"-Level Output Voltage Vomn | Vss=-2.9V, COMI, 2, Jon=-4uA | 1/2Vicn 12Vicp| V 40.2 Vomn | Jor=4uA 12V 00) I2Vico] V -0.2 "L"-Level Output Voltage 4 Vora | Vss=-2.9V, COMI, 2, Iop=4uA Vss Vgst0.2| V Power Supply Leakage Current | lex Vgs=-4V 1 10 LA Tg=50°C Input Leakage Current loge | K1-K8 INT, RES 1 HA Current Dissipation Ibp Vss=5V Ceramic resonator 300 HA OSC, HALT mode 400kHz OSC Fig. 2 Continued on next page. . No. 2783-3/22
» LC7020AK,7020BK Continued from preceding page. Symbol Conditioning [min [yp [ma | oni OSC Start Voltage Vstart | Tstart S$ 30ms crose 4 Vv pe OSC Start Time ° Tetart | Vss=-4V Rema 30. | ms 400Ki2 OSC Frequency fosc | Vss=-5.25 to -4V CF OSC ver, 420 | kHz ig. 1/2V icp Voltage Vu Viucp=Vss=-4V 5 +5 % Vo=1/2Vs5 CRI CRO Cori Como Rf Voo RI | 2? " Ot cro Cort oF Coro ] I Vss Voo Yoo Fig. 2 OSC, Current Test Circuit in Hold Mode Test (Copsoor cturaa) ) KBR400B (Kyocera), Fig. 1 Ceramic Resonator OSC Circuit MI No products described or contained herein are intended for use in surgical implants, life-support systems, aerospace equipment, nuclear power control systems, vehicles, disaster/crime-prevention equipment and the like, the failure of which may directly or indirectly cause injury, death or property loss, M Anyone purchasing any products described or contained herein for an above-mentioned use shall: ® Accept full responsibility and indemnify and defend SANYO ELECTRIC CO, LTO,, its affiliates, |. subsidiaries and distributors and all their officers and employees, jointly and severally, against any and all claims and litigation and all damages, cost and expenses associated with such use: @® Not impose any responsibility for any fault or negligence which may be cited in any such claim or litigation on SANYO ELECTRIC CO, LTD, its affiliates, subsidiaries and distributors or any of their officers and employees jointly or severally. HE Information (including circuit diagrams and cirouit parameters) herein is for example only; it is not guarant- eed’ for volume production, SANYO believes information herein is accurate and reliable, but no guarantees are made or implied regarding its use or any infringements of intellectual property rights or other rights of third parties. No. 2783-4/22
LC7020AK,7020BK 4. Key Matrix Loud Mi M2 M3 M4 MS, M6 (An A eeoo BAND a fan
73 D P—P—-D
14 ‘a mm 4 rr ry mm ro 1 cH cH coro aa
15 Ls As AS AS —As As
KB K? K6 KS Ka K3 K2 KI Note) T5 enters the read enable mode at the RADIO input-on state only. Momentary SW —__ > Diode SW > - Transistor SW aa i=) 5 Momentary SW => No. 2783-5/22
LC7020AK,7020BK 5. Diode Matrix (The read enable mode Is entered at the RADIO input-on state only: "0": Without diode, "1": With diode) (1) Area [DCBA [| [Ara FM1 (200KHz/step) O000 US. MW1 (10kHz/step A FMI,2 (100kHz/step) MW1 (10kH2/step
0010 Mw2
MW2, LW
1000 MW2
Loo | MWasW Ooi11 MW2, SW Loi | FM1,2 (S0kHz/step) MwW2, LW | Japan| FMI,2 (100kHz2/step) rio9 |" | mw FM1,2 (200kHz/step) Oi101 USA MW2 (9kHz/step) Lioio |
1010 MW2 (9kHz/step)
(2) Selection of preset memory call method [| 1-button method | 6-button method a (3) Selection of LOC/DX control method a "H"-level signal is USA FM use only. Operating the LOC/DX key provides LOC + "H", delivered at the LOC] Japan | DX->"L". pin during seeking/ The indicator light goes on at the DX mode. mode in each area. The state set by the MO/ST key controls the LOC/DX pin. The indicator light goes on at the DX mode. "H"-level signal is delivered at the SEEK/SCAN mode only. No LOC/DX key provided. ST > LOC ("H"), MO + DX (""L"). FM use only. No. 2783-6/22
LC7020AK,7020BK 6. Display ID oy FMI i we -f Leh} Li. Lob mi EE on i Lw (Sw) | Ll ° L | ° L | i ite l I; g 3 ¢ ¢ © a Go 2 + FM2: Selected as required. + LOC/DX: Either is selected. + LW/SW: Either is selected. __ « "SK" indicator light goes on when the SKI is brought to "L" level. “ST” indicator light goes on when STEREO is brought to "L" level. * The LOC mode indicator light goes on when diode matrix LOC = 0. The DX mode indicator light goes on when diode matrix LOC = 1. ‘ mrad mure cr wee Display font ee eee ee ee 7. Key Description . (1) M1-M6, MEM Keys for writing in/calling from the preset memory. Each time the MEM key is pushed, the preset channel No. goes up by one. 6-button method MS F MI Hi Mi-M6key J LJ Lo Preset channel No. Xs Xt a MEM key — FLSA Preset channelNo. _* XK! X 2 X 3 X 4 X 8 Xe X 1 *: Preceding channel (2) ME Used to write a new channel in the preset memory. The write enable mode is released automatically 5 seconds after the ME key is pushed. (a) 6-button method (ME and M1-M6) When the ME key is pushed, the preset channel display "~" (segment (g)) flashes and the write enable mode is entered; and when one of the M1-M6 keys is pushed within 5 seconds, a frequency displayed is written and a preset channel No. corresponding to this frequency is displayed. ME key i Ge Write enable 5s 15s MI - M6 = +-*#-- cms Preset channel No. * 3 No. 2783-7722
. &C7020AK,7020BK (b) —_1-button method (ME and MEM) . When the ME key is pushed, a preset channel No. flashes (2Hz) and the write enable mode is entered (5 seconds); and when the MEM key is held pushed for 1.5 seconds or more, a frequency displayed is written. If the MEM key is released within 1.5 seconds, the next channel No. is read and the write enable mode (5 seconds) is updated at the same time. Channel No. flashing is such that"; " flashes at the initial mode and last channel mode and a preset channel No. flashes at the preset channel read mode. ME key Withinl.Ss . MEM key |_1.Sse0 _ i sec | Preset channel No. = YX XX EK I Write completion Frequency of * is written in channel "3". (3) SCAN ‘Used to search a broadcasting station automatically and hold a receiving frequency for 5 seconds (AMUTE OFF) when the broadcasting station is reached. If this key is pushed again before lapse of 5 seconds, the receiving frequency continued to be held and then released. If nothing is done before lapse of 5 seconds, search starts again. When the SEEK key is pushed during scanning, the mode is changed to the seek mode. When the SEEK DOWN key is pushed during scanning, downward seek starts. The search rate is approximately 60 ms/step. (4) UP, DOWN Key for manual tuning. Each time this key is pushed, the channel No. goes up/down by one. When this key is held pushed for approximately 500 ms or more, the channel No. goes up/down at an approximately 60 ms/step. When switching between band edges occurs, the approximately 500 ms wait state is entered (see Timing (2)). (5) BAND Band select key. Each time this key is pushed, band switching occurs. (2-band use) (sw) (3-band use) (6) SEEK UP, SEEK DOWN Used to search a broadcasting station automatically and hold a receiving frequency. When the SCAN key is pushed during seeking, the mode is changed to the seek mode. Therefore, when the SCAN key is pushed during seeking- down, upward scan starts, When the SEEK DOWN (UP) key is pushed during seeking-up (down), downward (upward) seek starts. When the same key (SEEK UP or SEEK DOWN) is pushed twice, the search mode is released. The search rate is approximately 60 ms/step. (7) LOC/DX Effective in the RADIO mode only Diode Matrii . Lighted “"" ing seeki i . | o | LOC Unlighted 'H"-level during seeking/scanning only at LOC mode’ USA | py Lighted FM use only. Operating the key causes the output to Japan Unlighted H be inverted and fixed. e| DX L The state set by the MO/ST key controls the LOC/DX pin. Unlighted | H ST + LOC, MO - DX. FM use only. “H"-level during seeking/scanning only at LOC mode* *: See Timing (4). No. 2783-8/22
LC7020AK,7020BK OE (8) LOUD Lighted howe Unlghied (9) MO/ST Effective for FM only Lighted rape | Most Ualighted | 7] Note) For the RADIO, TAPE mode, see 9. Operation of RADIO, TAPE Inputs. (10) DNR, METAL TAPE Ugh [ Lighted [ H | (11) SK This key is for FM use only in Europe. Each time this key is pushed, the SK mode is enabled/disabled. When "SK" indicator light is turned on, the SK mode is entered and the signal on the SKO pin becomes "H" level. In this case, the SK station can be seeked or scanned. Seeking/scanning stops only when the signals on the SKI, STSIG, and STIN (for the LM7001, SKI and STSIG) are at"L" level. __ "SK" indicator light, being for FM use in Europe, is turned on when the SKI pin input is at "L" level regardless of the SK mode. RADIO vig Sample Connections with Traffic Information-Use IC Ex. 1. Connection with LA2200 +8 1 Voo +8 LCT020AK/BK = SKO LA2200 _ 7 SKI Ex. 2. Connection with LA2220 Yoo 4) sk mute ON/OFF LC7020AK/BK —skO LA2220 Ski No. 2783-9/22
LC7020AK,7020BK 8. Timing Description (1) Seek, Scan Channel X X X =n | Must fall within 50 msec. after channel change. STSIG Y " . ZA STRQ sm —, | | | =60ms =50ms | ome =60ms || =130ms | ! ' cheok of STSIG check of check of STIN SK (2) Manual Sf UP (DOWN) KEY Channel XT am a Lo. =500ms |__| =500ms =60ms. HIGH (LOW) LOW (HIGH) 4p EDO: EDGE AMUTE (3) RADIO input-on RADIO _I CE Vppl of LM7000/01 200ms_max | 100ms min (4) LOC mode (Diode matrix "LOC"=0, or LOC"=1 in Europe) SEEK, SCAN . KEY J Po AMUTE a | Loc rs I —— STIN =150ms_| [ming.5ms 4 13s " oa ms No. 2783-1022
LC7020AK,7020BK (5) Audio mute (AMUTE) 1) Key chattering eliminating time (approximately 10 to 20 ms) 2) Audio pre-mute time (approximately 15 msec.) 150 to 160 ms at seek/scan mode only 3) Data transfer to PLL (50 to 100 msec.) 4) Audio post-mute time (a) Band select mode, preset channel read mode =500ms (b) Manual up/down mode AMUTE a] @ le] ¢ =100ms a (c) Seek/scan mode {i Without | Without | With channel C wh, | channel channel (d) RADIO, TAPE-on/off mode RADIO, TAPE 7 ff on ON/OFF AMUTE fo ==500ms Sf =500ms _t (e) Initial power-on mode , Initial power-on AMUTE =500ms a” No. 2783-1122
LC7020AK,7020BK (6) Hold mode ‘When the TAPE, RADIO inputs are (0, 0), the hold mode is entered. qv MEMO © t {| V20 R3 = Nk t C Res To COM signal ot 1k POWER {] Vico Iv 5V R2 REGU 4 on 1 LC7020AK/BK RADIO (in matrix) SO C] tare TAPE IN To RADIO circuit Unit (resistance: 2) . Hold in Initial power on Setup time Hold setup time Power down Holdout isplay off] Display on | Display off Display on Yoo | POWER | | Jf RADIO TAPE _ =2.53 | RES: V min200 08 munt0Oms If the RES signal is applied within-100 ms after the RADIO input becomes "0", the normal operation may not be performed. Cj, R,, and Ry must be connected to hold the RES signal from being delivered within 100 ms after the POWER switch is turned off. The hold mode is entered when 2.5 sec. setup time has elapsed after RADIO, TAPE inputs = (0, 0). Therefore, C, and C3 must finish discharging within2.5s . + Hold time provided by C;, R,, Rz after POWER switch off > 100 ms + (Hold time provided by C,, R1, Rz after POWER switch off) + (C3 discharging time)<2.5s . It should be noted that when the RES signal (may be accepted in less than 200s) is applied during the normal operation (RADIO, TAPE inputs = other than (0, 0)) a malfunction may occur. No. 2783-12/22
LC7020AK,7020BK ee 9. Operation of RADIO, TAPE Inputs Spec. foraSet | RADIO | TAPE . . ote 3) - Tnput Input Mode Display Key Operation (Note 1) With pe, radio | 0 | 0 | Memory hold All keys invalid Traffic infor- 1 1 TAPE For TAPE and RADIO | B,C mation (with SK) | (Note 4) | (Note 4)| RADIO Always lighted SK Key C: Keys related to RADIO ....ssssssesessseeeseeseees BAND, M1 to M6, MEM, UP, DOWN, SEEK UP, SEEK DOWN, SCAN, MO/ST, LOC/DX, LOUD, CL/FRQ are valid. (Note 3) Sample connections (set use) with RADIO, TAPE inputs (a) Normal (with radio, tape) (b) Traffic information (with radio, tape) a oo 00 00 o Aco POWER | TAPE IN TAPE TAPE. mace ee TAPE mode — RADIO mode The RADIO mode and TAPE mode are entered simultaneously. The TAPE signal must not fall within 125 ms after The TAPE signal must fall within 125 ms after the the RADIO signal rises. RADIO signal rises. pao ff RADIO fo [. 125m 125ms TAPE MMU TAPE Ky Nan area | inhibit rea| (Note 4) The Europe version only can be used in this mode. 10. Initial Mode <RADIO mode> <TAPE mode> <Other> + Band : FMI + DNR: OFF + LOUD : OFF * MO/ST : MONO * METAL : OFF « SK : SK mode off + LOC/DX : DX No. 2783-13/22
LC7020AK,7020BK 41. Pin Description . . i . yo Pin Name | Pin No. Description Active] 1/0. Configuration METAL 1 Output signal for turning on/off equalizer for metal tape H Operates at the TAPE mode. TESTL 2 LSI test pins. Must be left open. TEST2 3 TEST3 17 K5toK8 | 4to7 | Key input signal H A K1 to K4 | 58 to 61 Ci pole _| TS 16 , | Diode matrix scan signal RADIO signal "0" > "1" causes a scan, Signal for instructing the LM7000 to count IF fx fof = | Data signal to be transferred CE: Chip enable | | to the LM7000/01. DATA DATA: Transfer data | - | 20,18 | Application of power, Vpp = 5V, Vsg = OV I-[-[ - Vico 19 When the LCD drive supply is used to turn on the 21,22 | indicator light, OV. For power save (hold) at the light turned-off mode, leave this pin open. XI, XO | | 32kHz crystal OSC pin. Must be left open. I-[-[ - | ‘The system clock (400kHz) from the LM7000/01 is Lr] applied to the CRI or a ceramic resonator is connected Cc ct gn TAPE 28 Input signal to cause the tape mode to be entered I A (Refer to "9. Operation of RADIO, TAPE Inputs".) COM1 55 Output pins for common plate (COM) of LCD panel COM2 29 Frame frequency: 100Hz, drive: 1/2 duty $1 to S24 | 31 to 54 | Output pins for LCD panel segments |- [of = | LOC 62 Output signal for selecting LOC/DX. Depends on the H state of the diode matrix. Refer to "7. Key Description". MO/ST Output signal for selecting monaural (H)/stereo (L) L (For RADIO mode only) Output pin for DNR control (For TAPE mode only) Ix fof =e | Continued on next page. No. 2783-14722
LC7020AK,7020BK Continued from preceding page. Pin Name | Pin No. Description Active] I/O Yo . Configuration AMUTE Audio mute signal to be delivered at the following mode. H + Band select mode * Manual up/down mode * Seek, scan mode + Reset channel read mode + RADIO or TAPE on/off mode. + Initial power-on mode Psa Pel 12. Description of Transistor Matrix Input STIN Automatic tuning stop signal used when the IF count mode | When no IF count mode is used, is used with the LM7000 Active "L" no Tr is required, but the Di is required. STSIG Signal for giving information that a broadcasting station is nearby during automatic tuning when the IF count mode is { used with the LM7000. Used as the station detector signal (SD signal) when no IF count mode is used (when the LM7001 is used) Active "L" RADIO Signal for causing the RADIO mode to be entered (Refer to "9. Operation of RADIO, TAPE Inputs”.) Active “H" SKI SK signal input for FM use only in Europe. "SK" indicator | Each pin is sampled with a period light is held turned on when the SKI is at "L" level. of approximately 13 ms to cause (Refer to "7. Key Description".) Active "L" the indicator light to go on/off. STEREO STEREO signal. "ST" indicator light is turned on when the STEREO is brought to "L", Active "L" “| DIR signal DIR signal 1H" causes P indicator light to go on. "L" causes indicator light to go on. The transistor base provides the active polarity for signal. Pin Input/output configuration A B c o Voo V9 Voo Yoo E Yoo CRI Vest (14 Vico) CRO Vss Vss Vss Vss ge KF Vss1 (*4Vioo} No. 2783-15/22
LC7020AK,7020BK —_— 13. Tracking Point . The following frequencies are loaded in each memory at the initial power-on mode. Unit ( om | [Area [Band TMi Tas Mo Tan [FM | 760 | 786 | 0 | 866 | 900 [760 | [Mw [sa | on [999 | aoe [teas] [rm | ars | 901 | 98a[ tor | 079 [75 | usa [Twi sa0 [610 | 100 | 400 | iea0— 30 “sa [6 [95920 sat] 875 [900 | 980 | 1060. | 1080 ape [mwa | sx | 612 | 997 [40s | 1620 [pw [ass [60 [200 [20 at [sw | ss40 | e000] 100 | 6200 | 6210 | 5940 14. Band Power Supply Select Signal (Refer to Sample Application Circuits.) This signal is delivered at the BOI to B03 of the LM7000/01. The output is of the N-ch open drain type. MIL (S) ce ‘B02 AM (MW) Bot M-L(S) 15. SW Specification The SW VCO output signal must be applied to the FMIN pin of the LM7000/01. 46. Panel and Connection of Segment, Common Pins — 7 _ _ — = | be) da | ST | a Zz 2 7 Ty vam va kHz Pd mw [| ed dl ged | Kal via uw Pin No. 2 31 a2 43 34 35 36 37 38 29 40 41 42 43 44 45 46 47 48 49 50 5) 52 53 54 55 c c & % 2 . 1 J % sr vam FMI vam a yd Pa ™ | 0h al ma da el I AY Cow | f SSIS KM LW c c a & 2 ee 1 No. 2783-16722
LC7020AK,7020BK cee 17. Notes for Car System Design A reduced voltage is inevitable to car systems. To operate the controller reliably even at a reduced voltage, the constant-voltage circuit of low-saturation type shown below is required. POWER SW thoeet Veat Oo oa —4 Voi Vooe a b----, ‘Sye DI ‘ i ’ ' ao ' : 1 ' VR=0.72V ‘ = ' : ‘ RI CRO ‘ Ver O ‘ sail ng on! oe 7 Lo7020aK/ax # 5.6V \\ RESET — ES Assuming that a reduced voltage occurs instantaneously, a capacitor for Vpp hold must be connected additionally (ris used to limit the inrush current). If it is assumed that even the circuit shown above provides a voltage less than the allowable operating voltage of the LC7020AK/BK, LM7000/01, the RESET IC must be connected additionally to reset the LC7020AK/BK. In the recommended circuit shown above, (1) To what extent may the voltage be reduced? (a) When the ceramic resonator OSC mode is used for generation of the LC7020AK/BK system clock: Allowable.operating voltage Vpp min of the LC7020AK/BK is 3.5V. Vaart - Vp 23.5V If Vg=0.7V Vpar 23.5 +0.7=4.2V The Vyar down to 4.2V is allowable at the reduced voltage mode. (Note) When the D2 that acts to provide protection against inverted connection, the Vgar down to 4.9V is allowable (Vr of D2 is 0.7V). (2) About capacitance of C * When the ceramic resonator OSC mode is used for generation of the LC7020AK/BK system clock: Fix the capacitance with the holding time and the current dissipation of the LC7020AK/BK considered. (3) About RESET IC * When the ceramic resonator OSC mode is used for generation of the LC7020AK/BK system clock: Connect the RESET IC additionally so that the LC7020AK/BK is reset when the Vpp becomes 3.5V. (Note) The D1 acts to prevent malfunction which will occur when connection to the Vgqr and Vpar (MEMO) is made wrongly. No. 2783-1722
LC7020AK,7020BK eee Sample Application Circult 1 (Applicable In alt areas) LC7020AK/BK, LM7000 System ° . Ft a ed § @& e 5 2 8938 298 29 28 é eo po a oe =i S22 ae Rie 28) 34
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LC7020AK,7020BK Sample Application Circult 2 (Applicable In all areas) LC7020AK/BK, LM7001 System > . 3 g sg: Bases * Fi » as geQ g 2 Bea 98 5 22gns 2g 538 28 ee s) 23 as" > Fo ae = B2esg ie ge geass” i 33 SEnoe 8 3 gas” a ge > 2a 2 x. ra a 2 3 a8 g2e8 ry I ron Se g 88 a g8 SEIBIES cleletete [e| té &3 ae Bab PE gheegRxegye Zé Be.» wes SB EE%2558 Pero a BE % 72) les s 30 32 ala) Fs woe Us Saal ast “0 gy a} As ousleoN 5s cated les Fd Ph g Erm Stes = ue a5 SU} Blois Fa 22] S Bo. | alts g cco 58 am 2fz1s g ey om sae8| Hse oe 85 o3 ae > rece a8 | Ble * P ZOO | Ses : 8 wind gz bij Be ee 5s pen a | 2 28 8 z 8 nS ral $5 i’ Eg rr A QOD oz cacn, 2. 8] FEF} a b 6} +-6lie Fe il g z Ee G7 SSess < 5 = No, 2783-19/22
LC7020AK,7020BK Continued from preceding page. Note 3) If both FM and AM are the same in the constants of the low-pass filter, no more than one low-pass filter is required. proccess ttre rere i H i ' ' m i 1 FM v- Place the parts bounded by the dotted line near the LM7000, LM7001. Note 4) If anoise is generated at this pin, take the following measure. LC7020AK/BK Loo [rn LOC/DX select |" 0.022u ss Ts a4 ~ Connect this capacitor near the LC7020AK/BK. Note 5) When no IF count mode is used: (Using the LM7000) LC7020AK/BK LM7000. 10k~100% | Voo ~ STSIG #7 re SD signal | | STIN — STOUT 1 ey oper | — FMIF Sample application circuit 3 open | —~ AMIF — stro open open Unit (resistance: , capacitance: F) No. 2783-20722
LC7020AK,7020BK Sample Application Circult 3 Unit (resistance: 9, capacitance: F) Stop sensitivity adjust 75k to 100k, port A (LAT140) ‘aad egy tram AMUTE Ota — 8] “4 wh trom Bhi svexr_, Wop a 2 Fal By Te AF output vn Ae Ba veld 7 c 0p 02 3 Clay rom STR 7 8S whi comm crs se to AME = el 2 had fof] fi] ve fe) pa) fal pn sie Note 7) foe PEED bel Poe] [ra Le J} [2 ee \\ = [Teer ffm] Ce] tae eZt wos TOE TT et we TJ wy DTG wy 1s) ta] 4% BEY coe =n, VorrP:8V_ R75 7 em jaws ° rion sveana 12, mn th LA = Oe rea at AS; FEA ma) ompy 10k Strom OVccmars BY OCR EBV u BL 7a! ; Tl: YT-30202 Mitsumi Siam Sp 2sesvaireg = T2: YT-30018 — Mitsumi F Soy T3: CFMA-021A Toko Varactor $VC321 T4: YT-30007 Mitsumi . 5: YT-30008 = Mitsumi Note 6) When the STRQ pin is brought to high level at the FM mode, the IF signal of FM must maintain the following level. (xii No. 2783-21722
LC7020AK,7020BK Sample Application Circuit 4 aft t : eh SS Bs wl - 2 Ee Bot ay ial 8 & gle es = < 3 =k 5 8 g 3 2 Z
3238 J a Pe
N 9 c= ESES | Fon Ba 5 vE0a fy ¥ hn oly fee TES poll det 2 E38 e 11 FI 3 fee i 7 a oe a il * Rte to 208 He [es i Be a E in eel ®' a, [Ly tel! | is 20°F ad Syl iy rel per ._ ifs je z a Bo 6 F252 33 , aa YB Ra3s5 be 272 By, eae 3 3s § Ne} a —T S 8 g [a] Bye? 4 <% 2 ein! as | [ioe Sear eae ae S888 “a ayeas aged Pb BEEEE Sahl | 213 & 2 ae a] been Pere pew?) SLE |g ORS i ;-t 20 hea g if zo = E §: ak FS Note 7) When the STRQ pin is brought to high level at the AM mode, the IF signal of AM must maintain the following level. : NNT No. 2783-22/22