AN6262

AN6262N PANASONIC | Alldatasheet

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ICs for Cassette, Cassette Deck n Overview The AN6262N and the AN6263N are the pause detec- tion integrated circuits which select the program on the cassette tape. In the ordinal method, tape speed is differ- ent depending on the PLAY and FF/REW, and also non- signal time between the programs is different. Therefore, two time constant circuit has been applied in order to detect each time. The AN6262N and the AN6263N are proud of detecting the program by making the time corre- sponding to each non signal time logically in the one time constant circuit. Furthermore, signal can be detected in this time constant circuit and beginning of the program is recognized when sound signal pulse increase more than specified numbers. n Features

• Built-in protection circuit to prevent mis-operation when power switch is turned ON.
• Time-constant circuit for detection of no-signal period in PLAY and FF/REW.
• No-signal period and output pulse width can be select- ed by external capacitor.
• Detection level of input signal can be selected by exter- nal resistor.
• As the ON/OFF input for mode setting and pause detection, both TTL level and power source level can be used.
• Very few external components needed. AN6262N, AN6263N Pause Detection Circuits of Radio Cassette, Cassette Deck 0.3+ 0.1 – 0.05 23.3–0.3 6.0–0.3 2.4–0.25 3.3–0.25 1.5–0.25 0.5–0.1 2.54 1.5–0.25 1.4–0.3 3.0–0.3 Unit : mm 30˚ 9-Lead SIP Package (SIP009-P-0000)

3 V CC

Amp. Input Circuit OSC Input Circuit Input Circuit Differential Circuit Wave Form Voltage Stabilizer Output Circuit FF FF1 FF2 FF8 FF3 FF12 SW 1–2 T b a b P SW 1–1 a a a SW 2 b b SW 1–3 b SW 1–4 a S QT Reset to each block n Block Diagram

ICs for Cassette, Cassette DeckAN6262N, AN6263N O FF FF/R EW PLA Y O FF Pin N o. Pin N am e Signal Input N egative Feedback Pause D etection O N /O FF Input V C C G N D O utput M ode * M ode * R eference O scillation n Pin D escriptions Pin 7 L H L H Pin 8 L L H H M ode 336 475 –25 ~ + 75 –55 ~ + 125 V C CSupply V oltage Supply C urrent Pow er D issipation O perating A m bient Tem perature Storage Tem perature V m A m A m W m W Param eter U nit n Absolute M axim um R atings (Ta=25˚C ) A N 6262N A N 6263N A N 6262N A N 6263N IC C PD Topr Tstg Sym bol R ating Param eter Sym bol C ondition m in. typ. m ax. U nit n Electrical C haracteristics (V C C =12V , Ta=25˚C ) Supply C urrent (O utput O FF) O scillation Frequency Signal D etection Level Pause D etection O N /O FF Level Pause D etection O FF O utcom ing C urrent M ode Sw itching Level M ode Sw itching C ircuit O utgoing C urrent V 3=V 7=V 8=2V , V 9=1V V 1=0V , V 3=V 7=V 8=0V f1=10kH z, V 3=V 7=2V , V 8=0V I3= –100µA , V 7=V 8=2V , V 9=1V V 3=0V , V C C =18V , V 7=V 8=2V , V 9=1V V 3=V 8=2V , I7= –100µA , V 9=1V V 3=V 7=2V , I8= –100µA , V 9=1V V 3=V 8=2V , V C C =18V , V 7=0V , V 9=1V V 3=V 7=2V , V C C =18V , V 8=0V , V 9=1V I4 (O FF) fO SC V 1 V 3–5 V 7–5 V 8–5 Pin7 Pin8 Pin7 Pin8 A N 6262N A N 6263N 11.5 12.5 0.9 1.6 1.1 – 0.6 1.0 1.0 –1.2 –1.2 1.2 1.47 2.6 1.6 – 0.3 1.5 1.5 – 0.6 – 0.6 m A m A kH z m V rm s V m A V V m A m A t – C 0.01 0.001 0.3 0.003 O scillation C apacitance C (µF) Tim e of non-signal period t (s) 0.1 0.03 0.01 0.03 0.1 0.3 1 FF/REW PLAY Output Pulse Width

ICs for Cassette, Cassette Deck AN6262N, AN6263N V C C (O FF) O pen (O N ) Search SW R C h. L C h. A N 6262N 0.027µF 150kΩ 47pF0.01µF 22kΩ 220kΩ 22kΩ 16V 47µF22kΩ 4.7kΩ SW (O N ) R C h. L C h. A N 6263N 0.047µF 150kΩ 0.022µF 10kΩ 10kΩ O pen (O FF)O penO pen +16V 47µF V C C O N at only FF/R EW Program detecting circuit only at FF/R EW m ode. (1) W hen the plunger is O N betw een the program (2) W hen the plunger is O FF betw een the program n Application Circuits

ICs for Cassette, Cassette DeckAN6262N, AN6263N 1) W hen supply voltage is turned O N and Pin3 is set to “H ” (betw een the program detection O N ), FF1-FF12 are reset and FF13 is set, Sw itch SW 1 is all connected to a. 2) M ode is set (Pin7 “L”, Pin8 “H ”). 3) SW 2 is connected to a. 4) Sound signal input to P in1 becom es pulse after w ave shaped. 5) T his sound pulse signal is input to the counter via SW 1-2. 6) Sound pulse signal is input to the counter by 3712 pulses, FF12 is inverted to “H ” (L H ). B ut no output is obtained as the SW 1– 4 is connected to a. 7) Furtherm ore sound pulse signal is input by 256, FF12 in inverted to “L ” ( L ). 8) W hen FF12 is inverted from “H ” to “L”, FF13 is inverted. W hen FF13 is inverted, S W 1 is all connected to b. 9) Sound pulse signal, oscillation from oscillator and output of FF12 are connected to reset pin of the counter, input of the counter and output circuit, respectively. 10) C ounter w ill count oscillation pulse signal and is reset by the “H ” of sound pulse signal (Program is there). 11) W hen sound pulse signal is stayed at “L” (program ends), reset is released. C ounter begins to count oscillation pulse signal and FF12 is inverted to “H ” by 3712 pulses. W hen static capacitance of the external capacitor at Pin9 is set to 0.1µF, betw een the program is detected w hen no signal tim e is m ore than 3 seconds. 12) O scillation pulse signal is input furtherm ore by 256 pulses, F F 12 is inverted (“H ” “L”), FF13 is also inverted and SW 1 is all connected to a. 13) R eturns to 5) m ode. Input pulse signal is counted by m ore than 3712 + 256 pulses, program is recognized. n O perational D escription Sound Signal Pulse (1) Betw een the program tim ing chart (PLAY M ode) M usic M usicPause betw een the m usic (O utput polarity is inverted in case of A N 6263N ) W hen sound pulse signal is input by 3712+256 pulses, program is recognized. B etw een the program is detected by counting oscillation pulse signal by 3712 pulses.

3712 Pulse 256 Pulse 3712 Pulse 256 Pulse 3712 Pulse 256 Pulse

(2) Explanation of PLAY m ode (R eferred to block diagram ) Sound Signal R eset C ounter Input FF12 FF13 O utput O scillation Signal Pulse

ICs for Cassette, Cassette Deck AN6262N, AN6263N 1st m usic 2nd m usic 5 sec. 3 sec. A fter that, no signal tim e (m ore than 3 seconds) com es, betw een the program is recognized and output pulse is generated. If no signal tim e is less than 3 seconds, it is recognized not betw een the program , but program . Even if noise is contained before m ore than 3 seconds of 1st m usic, betw een 1st m usic and 2nd m usic is detected. W hen count of input pulse signal is by less than 3712, it is recognized as no signal tim e. So noise is not recognized as program . D etection of betw een noise and 1st m usic is never done. (3) FF/R EW M ode is set (Pin7 “H ”, Pin8 “L”). Sw itch S2 is connected to N o signal detection tim e (0.1 seconds) is only different, count num ber and pulse w idth of the sound pulse signal, w hich acknow ledges program , are the sam e, and operation is sam e, too. (4) N either PLAY nor FF/R EW W hen Pin7, 8 are “H ”, “H ” and “L” and “L”, betw een the program detection is not perform ed even if betw een the program m ode is O N . (5) Sw itching case of PLAY FF/R EW A lw ays reset and initialized. (6) C urrent driving capacitance of the output is m inim um 100m A . W hen relay is driven directly, equivalent load resistance is m ost suitable at 200Ω . (A N 6263N ). N o signal detection tim e of PLA Y , FF/R EW and tim e of output pulse w idth is determ ined by the relation betw een oscillation cycle determ ined by the oscillation capacitance and construction stage num ber of the flip-flop. W hen oscillation period is tosc, D etection tim e of the PLA Y m ode : tplay=3712tosc D etection tim e of the FF/R EW m ode : tFF/R EW =128tosc O utput pulse w idth : tout =256tosc R elation betw een oscillation cycle and oscillation capacitance is tosc=8.64C (m s) C : µF, thus tplay, tFF/R E W , tout becom es tplay=32.07C (s) tFF/R E W =1105.9C (m s) tout=2211.8C (m s) C : µF. n H ow to determ ine oscillation capacitance tosc

3712 Pulse

(Pin1) PLA Y m ode output w aveform (Pin6) FF/REW m ode output w aveform (Pin6) (O utput polarity is inverted in case of A N 6263N ) A N 6262N A N 6263N Follow ing item s should be taken care in order to protect destruction and keep reliability. 1. Please use it in the absolute m axim um ratings. Take care in case surge voltage shall be applied. 2. Pins except P in5 should be used in the range of positive voltage against P in5. 3. O scillation capacity should be used w ith superior therm al characteristics. 4. W hen plunger and relay are connected to the output circuit, diode should be connected to the both side of coil in order to protect the IC against counter electrom otive force. n Precautions on U se V C C