CXA2002 Sony Corporation, CXA2002 Datasheet

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CXA2002

Manufacturer Part Number
CXA2002
Description
2-channel Recording/Playback Amplifier
Manufacturer
Sony Corporation
Datasheet

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CXA20026
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CXA2002R
Manufacturer:
SONY
Quantity:
1 213
Description
recording/playback amplifiers for Hi8 VCRs.
Features
• Recording/playback system
• Recording system
• Playback system
Absolute Maximum Ratings
• Supply voltage
• Operating temperature
• Storage temperature
• Allowable power dissipation
Recommended Operating Condition
• Supply voltage
• Vcc EVR voltage
The CXA2002R is a bipolar IC developed as
• Wideband recording/playback amplifier for Hi8
• Supports electronic volume (EVR) control (3V)
• Recording amplifier feedback dumping circuit and
• Five-input (Y, chroma, AFM, ATF and PCM) mix
• Ramp circuit for the recording amplifier output
• Playback amplifier feedback dumping circuit
• Middle-band compensation circuit (middle tune)
• RFAGC and dropout detection circuits
(when mounted on the printed circuit board)
Sony reserves the right to change products and specifications without prior notice. This information does not convey any license by
any implication or otherwise under any patents or other right. Application circuits shown, if any, are typical examples illustrating the
operation of the devices. Sony cannot assume responsibility for any problems arising out of the use of these circuits.
VCR
its EVR control function facilitates printed circuit
board design.
amplifier and EVR control function of Y and low-
band recording level
bias current
facilitates printed circuit board design.
and independent adjustments of the center
frequency, Q and boost by EVR
2-channel Recording/Playback Amplifier
V
Topr
Tstg
P
CC
D
–65 to +150
–10 to +75
3.15 ±0.15
4.75
1100
7
+0.5
–0.25
– 1 –
Application
Structure
8 mm VCR
Bipolar silicon monolithic IC
mW
°C
°C
V
V
V
CXA2002R
48 pin LQFP (Plastic)
E95201-ST

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CXA2002 Summary of contents

Page 1

... 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 ...

Page 2

... MUTE M · T –6dB 1CH 2CH MUTE VIDEOSW RF AGC VPSW1 VIDEO PCM VPSW2 VIDEO 1 1 YGCA PCM – 2 – CXA2002R DOP 12 11 DOCDET 10 RFAGCIN 12dB 9 RFAGCTC DOCDET AGCDET 8 RFAGCOUT YLEVEL 7 6 YIN 5 LOWLEVEL CGCA 4 CIN 1 ...

Page 3

... 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 2.3V or above L: 0.6V or below Recording chroma input pin. Input after cutting DC component with C. Input level: 300mVp-p (typ.) CXA2002R ...

Page 4

... 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. ...

Page 5

... 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. ...

Page 6

... 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. ...

Page 7

... High: BOTH REC 2. above 143 Low: EACH REC 0.6V or below RFSWP input pin. High: 2.3V or above 21 143 Low: 0.6V or below Pin to turn ON/OFF the REC amplifier bias current during after-recording. The bias current turns ON when this pin 22 143 goes high. High: 2.3V or above Low: 0.6V or below CXA2002R ...

Page 8

... CXA2002R Description Ramp pulse rising slope switchover pin. Low: 32µA/µs 0.6V or below 23 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 ...

Page 9

... 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 ...

Page 10

... 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 ...

Page 11

... 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 ...

Page 12

... 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 15kΩ between this pin and GND. Pin to produce the reference current for the middle tune, dropout detector and ramp ...

Page 13

... CXA2002R Description PCM recording switchover pin. PCM recording is performed when this pin goes high. 47 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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... CXA2002R ...

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... CXA2002R ...

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... CXA2002R ...

Page 18

... 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 ...

Page 19

... CC CC – 19 – CXA2002R ...

Page 20

... 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 ...

Page 21

... 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 f 1 Center frequency – 21 – CXA2002R 3dB 8MHz – 2 ...

Page 22

... 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 ...

Page 23

... V = 4.75V CC –30 EVR V = 3.15V CC 1.0 Pin 5 (LOWLEVEL) voltage [V] –10 –15 –20 –25 –30 2.0 3.0 –10 –15 –20 –25 2.0 3.0 – 23 – LOWGCA (VIDEO path) gain control V = 4.75V CC EVR V = 3.15V CC 1.0 2.0 3.0 Pin 5 (LOWLEVEL) voltage [V] CGCA gain control V = 4.75V CC EVR V = 3.15V CC 1.0 2.0 3.0 Pin 1 (CCONT) voltage [V] CXA2002R ...

Page 24

... Middle tune fo control 4.75V CC EVR V = 3.15V CC 1.0 2.0 Pin 17 (MTF0) voltage [ EVR 4.75V CC EVR V 3.0 Middle tune boost control = 4.75V = 3.15V CC 1.0 2.0 3.0 Pin 15 (MTG) voltage [V] – 24 – CXA2002R Middle tune Q control = 3.15V CC 1.0 2.0 3.0 Pin 24 (MTQ) voltage [V] ...

Page 25

... DETAIL B:SOLDER NOTE: Dimension “ ” does not include mold protrusion. PACKAGE STRUCTURE PACKAGE MATERIAL LEAD TREATMENT LQFP-48P-L01 LQFP048-P-0707 LEAD MATERIAL PACKAGE MASS – 25 – 0.05 0.127 – 0.02 0.1 S 0.18 ± 0.03 DETAIL B:PALLADIUM EPOXY RESIN SOLDER/PALLADIUM PLATING 42/COPPER ALLOY 0.2g CXA2002R ...

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