cxa2002r Sony Electronics, cxa2002r Datasheet
cxa2002r
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cxa2002r Summary of contents
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... Recording/Playback Amplifier Description The CXA2002R is a bipolar IC developed as recording/playback amplifiers for Hi8 VCRs. Features • Recording/playback system • Wideband recording/playback amplifier for Hi8 VCR • Supports electronic volume (EVR) control (3V) • Recording system • Recording amplifier feedback dumping circuit and its EVR control function facilitates printed circuit board design ...
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... MUTE M · T –6dB 1CH 2CH MUTE VIDEOSW RF AGC VPSW1 VIDEO PCM VPSW2 VIDEO 1 1 YGCA PCM – 2 – CXA2002R DOP DOCDET 11 10 RFAGCIN 12dB 9 RFAGCTC DOCDET AGCDET 8 RFAGCOUT YLEVEL 7 6 YIN 5 LOWLEVEL CGCA 4 CIN 1 LOWGCA ...
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... CXA2002R Description EVR adjusting pin for the recording chroma level. Increasing the applied voltage reduces the gain. Input pin for recording AFM. DC component is cut by built-in C. Input level: 125mVp-p (typ.) After-recording mode switchover pin (High: After- recording ...
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... CXA2002R Description EVR adjusting pin for recording RF. Increasing the applied voltage reduces the gain. Simultaneous adjustment of VIDEO and PCM paths. VIDEO path: C+AFM+ATF adjustment PCM path: ATF adjustment Recording Y input pin. ...
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... CXA2002R Description 4700p 9 Vcc 470k Pin to apply time constant of 9 RFAGC. EVR adjustment of RFAGC gain is possible. Adjustment range: ( 2.5V to 4.75V Gain: Small to Large RFAGC input pin for the playback Y signal. ...
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... CXA2002R Description Power supply pin for EVR block. Output pin for playback VIDEO signal AMF + ATF is output. EVR adjusting pin for the middle-tune boost. Increasing the applied voltage reduces the boost. ...
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... CXA2002R Description REC/PB switchover pin 18 High: PB 2.3V or above Low: REC 0.6V or below Power supply pin for components other than REC amplifier, PB amplifier and EVR. EACH REC/BOTH REC switchover pin. High: BOTH REC 2.3V or above Low: EACH REC 0 ...
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... CXA2002R Description Ramp pulse rising slope switchover pin. Low: 32µA/µs 0.6V or below High: 17µA/µs 2.3V or above (The fall time is 32µA/µs in both cases.) EVR adjusting pin to determine middle-tune Q. Increasing the applied voltage increases Q. ...
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... CXA2002R Description CH1 playback input pin. GND pin for CH1 REC amplifier and PB amplifier. Pin to determine the dumping of CH1 playback by external resistance. Increasing resistance strengthens dumping. Pin to determine the dumping level of CH2 playback by external resistance ...
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... CXA2002R Description CH2 playback input pin. CH2 recording output pin. Open collector. EVR adjusting pin for the CH2 recording dumping. Reducing the applied voltage strengthens dumping. Power supply pin for CH2 REC amplifier and PB amplifier ...
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... CXA2002R Description Output pin for the recording PCM path. The recording PCM signal and the recording ATF signal are mixed and output. 4.15V regulator output pin. VPSW input pin for the recording VIDEO path ...
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... CXA2002R Description GND pin for all components other than REC amplifier and PB amplifier. Pin to determine REC amplifier gain. The reference current is produced by connecting 15k between this pin and GND. Pin to produce the reference current for the middle tune, dropout detector and ramp ...
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... CXA2002R Description PCM recording switchover pin. PCM recording is performed when this pin goes high. High: 2.3V or above Low: 0.6V or below Recording ATF input pin. Input after cutting DC component with C. Input level: 125mVp-p (typ.) ...
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... Dropout RFAGCOUT 8 MTOUT 14 PCMOUT 16 PB2chAmp PB1chAmp REC2OUT 34 REC1OUT 27 RECPCM 38 RECVIDEO 41 AFREC 3 PCMREC 47 RAMPCONT 23 RAMP 22 RFSWP 21 REC BOTH – 18 – CXA2002R ...
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... CC CC – 19 – CXA2002R ...
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... CC V 100µ REC BOTH PB RP RFSWP REC BOTH RFSWP RAMP RAMP RAMPCONT RAMPCONT REC1CONT MTQ REC2CONT HEAD CH1 – 20 – CXA2002R ATFIN PCMREC PCMIN 10µ 0.1µ VG2 18k IR 15k IR1 GND RECVIDEO VPVTRIN 10µ 0.1µ VREG RECPCM VPPCMIN HEAD CH2 ...
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... If necessary, the detection level can be adjusted by inputting a DC voltage to Pin 11 (DOCDET). To make this adjustment, input a voltahe proportional to the output voltage of Pin 39 (VREG). Boost amount = 6dB Center frequency f = 8MHz – 21 – CXA2002R 3dB 2 – 2.5 1 Frequency ...
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... For EVR adjustment at Pin 26 (REC1CONT) and Pin 35 (REC2CONT), control the input voltage in the range from 1.8V to 4.75V when Vcc = 4.75V, in proportion to the supply voltage Vcc; at Pin 9 (RFAGCTC), control the input voltage in the range from 2.5V to 4.75V. +0.5V ), the voltage of Pin 19 (Vcc) should be equal to –0.25V – 22 – CXA2002R ...
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... V = 4.75V CC –30 EVR V = 3.15V CC 1.0 2.0 Pin 5 (LOWLEVEL) voltage [V] LOWGCA (VIDEO path) gain control –10 –15 –20 – 4.75V CC –30 EVR V = 3.15V CC 3.0 1.0 Pin 5 (LOWLEVEL) voltage [V] CGCA gain control –10 –15 – 4.75V CC –25 EVR V = 3.15V CC 3.0 1.0 Pin 1 (CCONT) voltage [V] – 23 – CXA2002R 2.0 3.0 2.0 3.0 ...
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... Middle tune fo control 4.75V CC EVR V = 3.15V CC 1.0 2.0 Pin 17 (MTF0) voltage [ 4.75V CC 0 EVR V Middle tune Q control 4.75V CC EVR V = 3.15V CC 3.0 1.0 Pin 24 (MTQ) voltage [V] Middle tune boost control = 3.15V CC 1.0 2.0 3.0 Pin 15 (MTG) voltage [V] – 24 – CXA2002R 2.0 3.0 ...
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... M 0.1 ± 0.1 + 0.08 0.18 – 0.03 (0.18) DETAIL B:SOLDER DETAIL B:PALLADIUM NOTE: Dimension “ ” does not include mold protrusion. PACKAGE STRUCTURE PACKAGE MATERIAL LEAD TREATMENT LQFP-48P-L01 LQFP048-P-0707 LEAD MATERIAL PACKAGE MASS – 25 – CXA2002R B + 0.05 0.127 – 0.02 0.1 S 0.18 ± 0.03 EPOXY RESIN SOLDER/PALLADIUM PLATING 42/COPPER ALLOY 0.2g ...