CXA2002R 2-channel Recording/Playback Amplifier Description The CXA2002R is a bipolar IC developed as recording/playback amplifiers for Hi8 VCRs. 48 pin LQFP (Plastic) 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. • Five-input (Y, chroma, AFM, ATF and PCM) mix amplifier and EVR control function of Y and lowband recording level • Ramp circuit for the recording amplifier output bias current • Playback system • Playback amplifier feedback dumping circuit facilitates printed circuit board design. • Middle-band compensation circuit (middle tune) and independent adjustments of the center frequency, Q and boost by EVR • RFAGC and dropout detection circuits Application 8 mm VCR Structure Bipolar silicon monolithic IC Absolute Maximum Ratings • Supply voltage VCC 7 • Operating temperature Topr –10 to +75 • Storage temperature Tstg –65 to +150 • Allowable power dissipation PD 1100 (when mounted on the printed circuit board) Recommended Operating Condition • Supply voltage • Vcc EVR voltage 4.75 +0.5 –0.25 3.15 ±0.15 V °C °C mW V V 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. –1– E95201-ST CXA2002R MTQ RAMPCONT RAMP RFSWP BOTH REC VCC RP PB MTF0 PCMOUT MTG MTOUT VCC EVR Block Diagram 24 23 22 21 20 19 18 17 16 15 14 13 VCC1 25 1CH REC1CONT 26 2CH RAMP GEN PCMSW MUTE 12 DOP 11 DOCDET 10 RFAGCIN 9 RFAGCTC 8 RFAGCOUT 7 YLEVEL 6 YIN 5 LOWLEVEL 4 CIN 3 AFREC 2 AFMIN 1 CCONT REC V/I REC1OUT 27 M·T –6dB 40dB PB1IN 28 HEAD 12dB 1CH 15dB 2CH DOCDET MUTE VIDEOSW AGCDET GND1 29 RF AGC PBDUMP1 30 VPSW1 VIDEO PBDUMP2 31 PCM 15dB HEAD GND2 32 40dB VPSW2 PB2IN 33 CGCA VIDEO 1 1 V/I 1 LOWGCA YGCA PCM REC REC2OUT 34 1 RAMP GEN 1 REC2CONT 35 1 LOWGCA 2 37 38 39 40 41 42 43 44 45 46 47 48 VPPCMIN RECPCM VREG VPVTRIN RECVIDEO GND IR1 IR VG2 PCMIN PCMREC ATFIN VCC2 36 –2– CXA2002R Pin Description Pin No. Symbol Pin voltage Equivalent circuit 25k 1 CCONT Description 10k EVR adjusting pin for the recording chroma level. Increasing the applied voltage reduces the gain. 1 — 50k 143 15k 7k 7k 70µ 20p 2 AFMIN Input pin for recording AFM. DC component is cut by built-in C. Input level: 125mVp-p (typ.) 143 2 — 50k 35µ 3 AFREC 35µ 35µ — 3 143 After-recording mode switchover pin (High: Afterrecording) H: 2.3V or above L: 0.6V or below 1.5V 70µ 143 4 CIN 4 2.45 50k 2.45V –3– Recording chroma input pin. Input after cutting DC component with C. Input level: 300mVp-p (typ.) CXA2002R Pin No. Symbol Pin voltage Equivalent circuit 25k 5 LOWLEVEL Description 10k 5 — 50k 143 15k 7k 7k 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 40µ 143 6 YIN 6 2.45 50k Recording Y input pin. Input after cutting DC component with C. Input level: 500mVp-p (typ.) 2.45V 25k 7 YLEVEL 10k 7 — 50k 143 15k 7k EVR adjusting pin for the recording Y signal level. Increasing the applied voltage reduces YLEV. 7k 40µ 8 RFAGCOUT 2.8 8 600µ 410µ –4– Playback Y signal output pin. Output level: 410mVp-p (typ.) CXA2002R Pin No. Symbol Pin voltage Equivalent circuit Description 4700p 9 Vcc 470k 143 9 RFAGCTC 9 — 25µ 25µ 50µ 50µ RFAGCIN — 10 50k 50µ ( 3.25V 4.15V 47k 143 11 DOCDET Pin to determine the dropout detection level. 11 2.5 79k 50µ 150 12 12 DOP H: 3.15 L: 0 3.15V 2.4k 1.3m –5– ) RFAGC input pin for the playback Y signal. Playback VIDEO signal output to Pin 14 (MTOUT) is input again to Pin 10 (RFAGCIN) via external ATF TRAP, AFM TRAP and C TRAP. DC component is cut by built-in C. 13p 143 10 Pin to apply time constant of RFAGC. EVR adjustment of RFAGC gain is possible. Adjustment range: 2.5V to 4.75V Gain: Small to Large Output pin for the dropout detection signal. High upon dropout. CXA2002R Pin No. 13 Symbol VCC EVR Pin voltage Equivalent circuit Description 3.15 Power supply pin for EVR block. 40µ 14 MTOUT 2.4 14 Output pin for playback VIDEO signal. Y + C + AMF + ATF is output. 400µ 330µ 25k 15 MTG 10k 15 — 50k 143 15k 7k EVR adjusting pin for the middle-tune boost. Increasing the applied voltage reduces the boost. 7k 40µ 16 PCMOUT 2 16 Output pin for playback PCM 3.5k 310µ 360µ 25k 17 MTF0 10k 17 — 50k 143 15k 7k 7k –6– EVR adjusting pin to determine middle-tune fo. Increasing the applied voltage increases fo. CXA2002R Pin No. Symbol Pin voltage Equivalent circuit 35µ RP PB 35µ — 6.1k 50k 18 35µ Description 18 143 REC/PB switchover pin High: PB 2.3V or above Low: REC 0.6V or below 1.5V 19 VCC Power supply pin for components other than REC amplifier, PB amplifier and EVR. 4.75 35µ 20 BOTH REC 35µ 35µ — 20 EACH REC/BOTH REC switchover pin. High: BOTH REC 2.3V or above Low: EACH REC 0.6V or below 21 RFSWP input pin. High: 2.3V or above Low: 0.6V or below 22 Pin to turn ON/OFF the REC amplifier bias current during after-recording. The bias current turns ON when this pin goes high. High: 2.3V or above Low: 0.6V or below 143 1.5V 35µ 21 RFSWP 35µ 35µ — 143 1.5V 35µ 22 RAMP 35µ 35µ — 143 1.5V –7– CXA2002R Pin No. Symbol Pin voltage Equivalent circuit 35µ 23 RAMPCONT 35µ Description 35µ — 23 143 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.) 1.5V 25k 24 MTQ 10k 24 — 50k 143 15k 7k 25 VCC1 EVR adjusting pin to determine middle-tune Q. Increasing the applied voltage increases Q. 7k Power supply pin for CH1 REC amplifier and PB amplifier. 4.75 270 34k 26 REC1CONT — 143 26 71k 40µ 40µ 66k EVR adjusting pin for the CH1 recording dumping level. Reducing the applied voltage strengthens dumping. 12k 27 27 REC1OUT — 5.7k 1k –8– 30 CH1 recording output pin. Open collector. CXA2002R Pin No. Symbol Pin voltage Equivalent circuit Description 1.2m 2.5k 28 PB1IN 0.7 CH1 playback input pin. 28 1.5V 29 GND1 GND pin for CH1 REC amplifier and PB amplifier. 0 120µ 270 30 2.5 4k 4k 40µ PBDUMP1 4k 30 Pin to determine the dumping of CH1 playback by external resistance. Increasing resistance strengthens dumping. 130µ 120µ 270 31 2.5 4k 4k 40µ PBDUMP2 4k 31 Pin to determine the dumping level of CH2 playback by external resistance. Increasing resistance strengthens dumping. 130µ 32 GND2 GND pin for CH2 REC amplifier and PB amplifier. 0 –9– CXA2002R Pin No. Symbol Pin voltage Equivalent circuit Description 1.2m 2.5k 33 PB2IN 0.7 CH2 playback input pin. 33 12k 1.5V 34 — CH2 recording output pin. Open collector. 1k 30 REC2OUT 5.7k 34 270 34k 35 REC2CONT — 143 35 71k 40µ 40µ 66k 36 VCC2 EVR adjusting pin for the CH2 recording dumping. Reducing the applied voltage strengthens dumping. Power supply pin for CH2 REC amplifier and PB amplifier. 4.75 20µ 143 37 37 VPPCMIN 2.45 50k 40µ 2.45V – 10 – VPSW input pin for recording PCM path. The Pin 38 signal is input after cutting its DC component with external C. CXA2002R Pin No. Symbol Pin voltage Equivalent circuit Description 25µ 38 RECPCM 2.4 38 6k Output pin for the recording PCM path. The recording PCM signal and the recording ATF signal are mixed and output. 180µ 220µ 10k 39 VREG 4.15 4.15V regulator output pin. 39 5p 20µ 143 40 40 VPVTRIN 2.45 50k 40µ VPSW input pin for the recording VIDEO path. The Pin 41 signal is input after cutting its DC component with external C. 2.45V 40µ 41 RECVIDEO 2.4 41 6k 220µ 300µ – 11 – Output pin for the recording VIDEO path. The recording (Y + C + AFM + ATF) mix signal is output. CXA2002R Pin No. GND Pin voltage Equivalent circuit Description GND pin for all components other than REC amplifier and PB amplifier. 0 Pin to determine REC amplifier gain. The reference current is produced by connecting 15kΩ between this pin and GND. 40k 42 Symbol 1.9 20k 1k IR1 40k 43 43 40µ 42k 4.15V 1.9 20k 1k IR 40k 44 44 40µ Pin to produce the reference current for the middle tune, dropout detector and ramp. Connect 18kΩ between this pin and GND. 4.15V 34.5k 270 45 VG2 2.45V internal reference voltage source. 2.45 4k 75µ 4.15V 49k 45 20k 70µ 143 46 PCMIN 46 2.45 50k 2.45V – 12 – Recording PCM input pin. Input after cutting DC component with C. Input level: 300mVp-p (typ.) CXA2002R Pin No. Symbol Pin voltage Equivalent circuit 35µ 47 PCMREC 35µ Description 35µ — 143 47 PCM recording switchover pin. PCM recording is performed when this pin goes high. High: 2.3V or above Low: 0.6V or below 1.5V 70µ 143 48 ATFIN 48 2.45 50k 2.45V – 13 – Recording ATF input pin. Input after cutting DC component with C. Input level: 125mVp-p (typ.) IPB IAFREC VREG VG2 Current consumption for playback Current consumption for afterrecording VREG pin voltage VG2 pin voltage 2 3 4 5 GYmin GYcen GYmax VFY DY GlVmin GlVcen GlVmax DAFM Y signal GCA min. gain Y signal GCA center gain Y signal GCA max. gain Y signal GCA frequency response (center gain) Y signal GCA secondary distortion (center gain) Low-band signal GCA (VIDEO path) min. gain Low-band signal GCA (VIDEO path) center gain Low-band signal GCA (VIDEO path) max. gain AFM path secondary distortion 6 7 8 9 10 11 12 13 14 Recording system IREC Symbol Current consumption for recording Item 1 No. – 14 – 2 2 2 125mVpp 1.7MHz 125mVpp 1.7MHz 125mVpp 1.7MHz A A A A A 7MHz 125mVpp 1.7MHz 500mVpp 6 A A A A A A I G A 41 41 41 41 41 41 41 41 41 45 39 IVCC1+ IVCC2 IVCC1+ IVCC2 IVCC1+ IVCC2 Measurement Control point, ammeter logic name 14MHz, 300kHz 200mVpp 300kHz 500mVpp 300kHz 500mVpp 2 — — — — — Frequency 500mVpp 300kHz — — — — — Level 6 6 6 6 — — — — — Input pin Input condition Measurement conditions –14.0 — Pin 5 (LOWLEVEL) = 0.0V Pin 7 (YLEVEL) = VYLEV — Adjust Pin 5 (LOWLEVEL) so that Pin 41 (RECVIDEO) output level becomes 12.5mVp-p → VILEV Pin 7 (YLEVEL) = VYLEV Pin 5 (LOWLEVEL) = 0.0V Pin 7 (YLEVEL) = VYLEV — — –1.5 Pin 5 (LOWLEVEL) = 3.15V Pin 7 (YLEVEL) = VYLEV Pin 7 (YLEVEL) = VYLEV 14MHz level/300kHz level Pin 7 (YLEVEL) = VYLEV –3.6 — Adjust Pin 7 (YLEVEL) so that Pin 41 (RECVIDEO) output level becomes 200mVp-p → VYLEV Pin 7 (YLEVEL) = 0.0V — 2.30 Pin 7 (YLEVEL) = 3.15V Measure the pin voltage. 3.95 45 IC internal current (including REC amplifier output bias current) during after-recording. Measure the pin voltage. 26 33 Min. IC internal current during playback. IC internal consumption current (including REC amplifier output bias current) during switched recording. Measurement method –55 –11.6 –20 –30.4 –55 –0.5 –1.3 –8.0 –23.2 2.45 4.15 64 37 47 Typ. — — — –26.0 — +0.5 — — –14.1 2.60 4.35 83 48 61 Max. dB dB dB dB dB dB dB dB dB V V mA mA mA Unit Electrical Characteristics ∗ See the Control Logic Truth Table for control logic conditions. (Vcc = 4.75V, VccEVR = 3.15V, Ta = 25°C. See the Electrical Characteristics Measurement Circuit.) CXA2002R – 15 – DP PCM signal path secondary distortion 25 2ch IB2 IB1 VFP PCM signal path frequency response 24 1ch GP PCM signal path gain 23 REC amplifier output bias current DC Chroma signal GCA secondary distortion (center gain) 22 26 VFC 21 Gccen Chroma signal GCA center gain 19 Chroma signal GCA frequency response (center gain) Gcmin Chroma signal GCA min. gain 18 Gcmax GPATF2 ATF (PCM path) max. gain 17 Chroma signal GCA max. gain GPATF1 ATF (PCM path) min. gain 16 20 GVATF Symbol ATF (VIDEO path) max. gain Item 15 No. — 46 46 46 4 4 4 4 4 48 48 48 Input pin Frequency A IB2 IB1 B — 38 A 7MHz 300mVpp — 38 A 38 41 41 41 41 41 38 38 41 14MHz 300kHz A A A A A A A A A Measurement Control point, ammeter logic name 300mVpp 300mVpp 300kHz 300mVpp 750kHz 2MHz 300mVpp 300kHz 300mVpp 300kHz 300mVpp 300kHz 300mVpp 300kHz 125mVpp 100kHz 125mVpp 100kHz 125mVpp 100kHz Level Input condition Measurement conditions Measure DC currents. Pin 26 (REC1CONT), Pin 35 (REC2CONT) = 3.3V 14MHz gain/300kHz gain — Pin 5 (LOWLEVEL) = VlLEV Pin 7 (YLEVEL) = VYLEV Pin 1 (CCONT) = VCLEV 18.8 23.05 mA dB — –55 — 14.55 dB dB dB dB dB dB dB dB dB dB Unit +0.8 –2.9 — +0.5 — — –21.6 — –26.0 — Max. 0.0 –3.7 –50 0 –10.5 –15.6 –26.4 –11.9 –30.7 –11.6 Typ. –0.8 –4.5 –0.5 Pin 5 (LOWLEVEL) = VlLEV Pin 7 (YLEVEL) = VYLEV Pin 1 (CCONT) = VCLEV 2MHz level/300kHz level — Adjust Pin 1 (CCONT) so that Pin 41 (RECVIDEO) output level becomes 50mVp-p→VCLEV Pin 5 (LOWLEVEL) = VlLEV Pin 7 (YLEVEL) = VYLEV –13.3 — Pin 5 (LOWLEVEL) = VlLEV Pin 7 (YLEVEL) = VYLEV Pin 1 (CCONT) = 3.15V Pin 5 (LOWLEVEL) = VlLEV Pin 7 (YLEVEL) = VYLEV Pin 1 (CCONT) = 0.0V –14.0 — –14.0 Min. Pin 5 (LOWLEVEL) = 0.0V Pin 5 (LOWLEVEL) = 3.15V Pin 5 (LOWLEVEL) = 0.0V Pin 7 (YLEVEL) = VYLEV Measurement method CXA2002R Ramp rising slope 1 Ramp falling slope 29 30 – 16 – See the Measurement method. B A B VAGC1 VAGC2 VAGC3 RFAGC standard output RFAGC cover-range high RFAGC cover-range low 34 35 36 2ch GP2 10 10 10 33 896mVpp 56mVpp 224mVpp 7MHz 7MHz 7MHz 300kHz G G G H G 200µVpp 28 GP1 1ch Head amplifier PCMOUT gain H G 300kHz 33 200µVpp GV2 28 H 2ch 33 GV1 Head amplifier MTOUT gain 1ch 2ch 8 8 8 16 14 34 27 34 27 34 27 34 27 B A 34 27 A B K 22 See the Measurement method. 10MHz 1MHz 1MHz 1ch Ton2 21 200mVpp 200mVpp Level Frequency A Toff Ton1 40 40 Input pin Measurement Control point, ammeter logic name 2ch 1ch 2ch 1ch VFR2 VFR1 1ch 2ch IR2 IR1 2ch 1ch Symbol 32 Playback system Ramp rising slope 2 REC amplifier frequency response 28 31 REC amplifier output current Item 27 No. Input condition Measurement conditions L 2500µsec H H Measure the output level, applying a time constant to Pin 9 (RFAGCTC). L Slope: Toff ∗ Logic is inverted in CH2 measurement. Pin 15 (MTG) = 3.15V Slope: Ton2 Output Input Slope: Ton1 Output Input 2500µsec 10MHz level/1MHz level Pin 26 (REC1CONT), Pin 35 (REC2CONT) = 3.3V Output level (Vp-p)/51 (Ω) Measurement method — 315 340 57.7 58.0 — — — — 18.1 Min. 420 380 410 61.2 61.5 17 32 32 –0.2 20.7 Typ. 490 — 480 64.7 65.0 — — — — 23.3 Max. mVpp mVpp mVpp dB dB µA/µs µA/µs µA/µs dB mApp Unit CXA2002R – 17 – Dropout OFF detection time Dropout pulse high level 40 42 Dropout pulse low level 39 Dropout ON detection time Dropout detection OFF level 38 41 Dropout detection ON level Item 37 No. Tdop-off Tdop-on Vdop-h Vdop-l Kdop-off Kdop-on Symbol Level Frequency See the Measurement method (figure to the right). See the Measurement method (figure to the right). Input pin Input condition G 12 12 12 G G 12 12 G G 12 G Measurement Control point, ammeter logic name Measurement conditions Tdop-on 50µs a VDOP-l VDOP-h a b 224mVp-p 7MHz Tdop-off Pin 12 (DOP) 7M/224mVp-p Pin 10 (RFAGCIN) 224 b 224 5kHz Kdop-off = 20 log Kdop-on = 20 log Pin 12 (DOP) Pin 10 (RFAGCIN) 10kHz Apply a time constant to Pin 9 (RFAGCTC). Measurement method — — 2.9 0 –9.5 –15.0 Min. 2 1.1 3.15 0.01 –6.5 –12.0 Typ. — — 3.4 0.2 –3.5 –9.0 Max. µs V dB Unit CXA2002R – 18 – L L H H H H L L L L L L 18 RP PB L L L L L L H H H H H H A B C D E F G H I J K H 21 RFSWP 22 RAMP H H H H L L L L L L L L 23 RAMPCONT L L H H — — L L L L L L 47 PCMREC H H H H L L H H L L L L H H H H L L L L L L L L ∗ ∗ ∗ ∗ P P x x P P P P 41 RECVIDEO V V x x x x x x P x P x x x P V ∆ V V V 38 RECPCM V V V V x P x P x x V P V ∆ V V 34 REC2OUT x x x x x x O O O x O x x x x x x x O O x O x O : Not operating : Video signal is selected. : PCM signal is selected. : CH1 signal is output. : CH2 signal is output. x V P CH1 CH2 L : Control logic input voltage — : Indenpendent of H and L 0.6V or below (Description of operation mode) O : Operating x x x x x x Hold Hold Hold Hold O O x x x x x x PB PCM after-recording After-recording ↓ ↓ ↓ REC Mode PB ↓ PCM REC ↓ VIDEO EACH REC ↓ VIDEO BOTH REC ↓ : Operating with no signal output O O O O O O x x x x x x Operation ∆ : Operating with bias current turned off Mute : Signal is muted. Hold : Time constant is kept on hold. ∗ Mute Mute Mute Mute Mute Mute Mute Mute CH1 CH2 CH2 CH1 x x x x x x RAMPCONT = L : Recording bias current rising slope 32µA/µs (typ.) RAMPCONT = H : Recording bias current falling slope 17µA/µs (typ.) L H L H L H L H L H L H PB1chAmp (Description of input conditions) H : Control logic input voltage 2.3V or above After-recording mode 20 BOTH REC Control logic conditions 27 REC1OUT Playback 16 PCMOUT Recording PB2chAmp Operation of each section under respective input condition 14 MTOUT Control logic input condition AFREC 3 RFAGCOUT 8 Input condition and operation Dropout detector Control Logic Truth Table CXA2002R A VCC 4.75V IVCC1 PB2IN PB1IN IB1 0.022µ 100µ 0.1µ 10µ IB2 A 5.6µ GND2 VCC2 REC2CONT 51∗ REC2OUT 0.01µ PB2IN 390 PBDUMP2 390 PBDUMP1 GND1 0.01µ PB1IN 51∗ A REC1OUT REC1CONT 5.6µ 0.022µ REC2CONT 49 49 REC1CONT 1 1 VCC1 36 35 34 33 32 31 30 29 28 27 26 25 37 24 23 REC 38 40dB HEAD HEAD 40dB REC 0.01µ 10µ MTQ VPPCMIN MTQ VPPCMIN RAMPCONT RECPCM 51 22 39 RAMP GEN V/I 15dB 15dB V/I RAMP GEN RAMP VREG RAMPCONT RECPCM RAMP 10µ 21 40 RFSWP VPVTRIN 0.1µ 2CH 2CH PCM 41 PCM VIDEO 0.1µ 42 PCMSW 18 43 YGCA VIDEOSW MUTE 1CH MUTE 1CH 19 VPSW1 VIDEO 20 VPSW2 BOTH REC 51 RECVIDEO RFSWP VPVTRIN 10µ VCC GND 10µ RP PB IR1 BOTH REC RECVIDEO MTF0 IR RP PB 15k∗ 44 2 1 17 1 1 RF AGC M·T –6dB PCMOUT 45 16 VG2 MTF0 18k∗ PCMOUT 10µ 15 46 LOWGCA LOWGCA AGCDET 12dB MTG PCMIN 0.1µ 1 1 47 13 0.1µ 48 CGCA DOCDET 14 1 MTOUT PCMREC 51 0.1µ 0.01µ MTOUT PCMREC MTG PCMIN 10µ VCC EVR ATFIN 100µ ATFIN – 19 – 0.01µ 0.01µ DOP 1 2 3 4 5 6 7 8 9 CCONT AFMIN AFREC 0.01µ CIN LOWLEVEL 0.01µ YIN YLEVEL 51 51 51 51 ∗ RFAGCOUT RFAGCTC 0.01µ RFAGCIN DOP 0.1µ 10µ 0.01µ RFAGCTC Resistance accuracy 1% Control logic pin EVR adjusting pin Signal input pin Signal output pin CCONT AFMIN AFREC CIN LOWLEVEL YIN YLEVEL RFAGCOUT 4700p 470k RFAGCIN VCC EVR 3.15V A IVCC2 11 DOCDET 12 10 10µ 51 Electrical Characteristics Measurement Circuit CXA2002R CH1 HEAD CH2 HEAD 100µ 0.1µ 10µ 390 390 10µ 0.1µ 100µ VCC2 REC2CONT REC2OUT 0.01µ PB2IN GND2 0.022µ PBDUMP2 0.022µ PBDUMP1 GND1 0.01µ PB1IN REC1OUT REC1CONT VCC1 36 35 34 33 32 31 30 29 28 27 26 25 REC2CONT 37 23 RAMPCONT 40dB REC REC 0.01µ 38 40dB HEAD HEAD REC1CONT 24 MTQ VPPCMIN RAMPCONT RECPCM RFSWP RAMP 39 RAMP GEN V/I 15dB 15dB V/I RAMP GEN 22 RAMP VREG BOTH REC 0.1µ RP PB 40 21 RFSWP VPVTRIN 10µ 41 PCM VIDEO VPSW2 PCM 42 PCMSW 18 43 YGCA VIDEOSW MUTE 1CH MUTE 1CH 19 10µ 44 2 1 17 1 1 RF AGC M·T –6dB 45 16 46 LOWGCA LOWGCA AGCDET 12dB 15 1 1 47 1 13 48 CGCA DOCDET 14 AFM TRAP 0.01µ DOP 0.01µ 1 2 3 4 5 6 7 8 9 10 CCONT AFMIN AFREC 0.01µ CIN LOWLEVEL 0.01µ YIN YLEVEL RFAGCOUT RFAGCTC RFAGCIN 11 DOCDET 12 ATF TRAP 4700p 470k C TRAP RF EQ RFGND PCMREC AFREC PCMIN ATFIN AFMIN CIN YIN CCONT LOWLEVEL YLEVEL MTG MTF0 MTQ DOP RFVCC2 RFVCC1 RFAGCOUT PCM OUT PB RF PB C RF LOGIC SIGNAL IN EVR SIGNAL OUT Application circuits shown are typical examples illustrating the operation of the devices. Sony cannot assume responsibility for any problems arising out of the use of these circuits or for any infringement of third party patent and other right due to same. 0.01µ 2CH 2CH VPSW1 VIDEO 20 BOTH REC RECVIDEO 100µ VCC GND 0.1µ RP PB IR1 MTF0 IR LOGIC 18k EVR 15k PCMOUT VG2 0.1µ MTG PCMIN 10µ MTOUT PCMREC – 20 – ATFIN VCC EVR Application Circuit CXA2002R CXA2002R Description of Operation <Mix amplifier + recording level adjustment> Y, chroma, AFM, ATF and PCM signals are input at specified levels so that they are mixed internally to achive an appropriate current value at the head. The VIDEO path signal (Y + chroma + AFM + ATF) is output to Pin 41 (RECVIDEO) and the PCM path signal (PCM + ATF) to Pin 38 (RECPCM). The Y level is EVR-adjusted at Pin 8 (YLEVEL) and the low band (chroma, AFM, ATF) level at Pin 5 (LOWLEVEL). The low-band levels of the video path and the PCM path are interlocked in adjustment. <SW + recording amplifier> The VIDEO path signal and the PCM path signal, which underwent recording level adjustment, are switched at a correct timing, then converted to a current to drive the head. A feedback dumping circuit is incorporated to inhibit head resonance, and the peaking can be adjusted by EVR at Pin 26 (REC1CONT), Pin 35 (REC2CONT). During recording, the output capacitance is about 12pF including that of the head amplifier. <SW + middle tune> This section switches the playback signals of CH1 and CH2 at the correct timing and outputs the playback VIDEO signal to Pin 14 (MTOUT) and the playback PCM signal to Pin 16 (PCMOUT). In the PCM after-recording mode, both playback VIDEO signal and playback PCM signal are muted during the PCM recording period. The middle tune circuit corrects the frequency response of the playback VIDEO signal. The center frequency can be adjusted by EVR at Pin 17 (MTF0), Q at Pin 24 (MTQ) and the boost at Pin 15 (MTG). The figure to the right shows the center condition that sets f0 = 8MHz, Q = 2.5 and the boost = 6dB. Each control characteristics shown in "Example of Representative Characteristics" is obtained when two of them are fixed to the center condition. Gain <Head amplifier> The playback signal from the head is amplified with low noise and high gain. A feedback dumping circuit is incorporated to inhibit head resonance, and the peaking can be adjusted by external resistors connected to Pin 30 (PBDUMP1), Pin 31 (PBDUMP2). During playback, the input capacitance is about 20pF including that of the recording amplifier. 3dB Boost amount = 6dB f1 f2 Center frequency f0 = 8MHz Q = f0 / (f2 – f1) = 2.5 Frequency <RFAGC> This circuit inputs the playback Y signal separated from the playback VIDEO signal using an external circuit and outputs it at a constant level of 410mVp-p. In the PCM after-recording mode, RFAGC gain is kept unchanged during PCM recording period. <Dropout detection> A dropout is detected in the playback Y signal, and a dropout pulse is output. The detection level is optimized using 224mVp-p input as a reference. 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). – 21 – CXA2002R <Control logic block> This IC exercises power-saving control of circuit blocks which are not in immediate need for operation. The IC also incorporates a logic circuit for controlling a number of SWs which change inputs and outputs at complicated timing. The combinations of input and output in the basic operation are shown in the "Control Logic Truth Table". <Reference voltage in the IC> VG2 2.45V and VREG 4.15V are generated as a reference voltages used in the IC. VG2 cannot be used outside the IC. VREG cannot also be used outside the IC except for adjusting the dropout detection level at Pin 11 (DOCDET). Notes on Operation 1. This IC is characterized by high-voltage gain (about 61dB in the playback system). Pay attention to the following when using the IC. 1) Use reinforced power supply and ground lines. Decouple the power supply pin with a coil and a capacitor. Connect the decoupling capacitor as close to the pin as possible. 2) Use of a regulator power supply is recommended. 3) Connecting a capacitive load to the output may cause oscillation. 4) Take particular care not to make capacitive coupling between the head amplifier input and the playback output. Also be careful not to make capacitive coupling between the recording input and the recording amplifier output. 5) Use of decoupling capacitors is recommended between the following DC voltage input pins and GND. When the control voltage source is at high impedance, aggravation of cross talk or oscillation is feared to occur. Pin 1 (CCONT), Pin 5 (LOWLEVEL), Pin 7 (YLEVEL) Pin 9 (RFAGCTC) [not when time constant is connected], Pin 11 (DOCDET) Pin 17 (MTF0), Pin 24 (MTQ), Pin 26 (REC1CONT) Pin 35 (REC2CONT) 6) When a decoupling capacitor is necessary for other pins (not power supply pin), it is recommended to connect each decoupling capacitor as close as to the pin as possible. 2. When Pin 13 (EVR Vcc) is used for 5V system (4.75 or larger than that of Pin 13 (EVR Vcc). +0.5V –0.25V ), the voltage of Pin 19 (Vcc) should be equal to 3. The voltage input to the EVR adjusting pin should be proportional to the EVR Vcc voltage. Control the input voltage in the range from 0V to 3.15V when EVR Vcc = 3.15V. 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. – 22 – CXA2002R Example of Representative Characteristics YGCA gain control LOWGCA (VIDEO path) gain control –10 Pin 48 (ATFIN) → Pin 41 (RECVIDEO) gain [dB] Pin 2 (AFMIN) → Pin 41 (RECVIDEO) gain [dB] Pin 6 (YIN) → Pin 41 (RECVIDEO) gain [dB] 0 –5 –10 –15 –20 VCC = 4.75V EVR VCC = 3.15V 1.0 2.0 –15 –20 –25 –30 3.0 VCC = 4.75V EVR VCC = 3.15V 1.0 2.0 Pin 7 (YLEVEL) voltage [V] Pin 5 (LOWLEVEL) voltage [V] LOWGCA (PCM path) gain control CGCA gain control 3.0 Pin 4 (CIN) → Pin 41 (RECVIDEO) gain [dB] Pin 48 (ATFIN) → Pin 38 (RECPCM) gain [dB] –10 –15 –20 –25 –30 VCC = 4.75V EVR VCC = 3.15V 1.0 –10 –15 –20 –25 2.0 3.0 VCC = 4.75V EVR VCC = 3.15V 1.0 Pin 5 (LOWLEVEL) voltage [V] 2.0 Pin 1 (CCONT) voltage [V] – 23 – 3.0 CXA2002R Middle tune fo control Middle tune Q control 6 5 4 Q 10 3 5 2 1 VCC = 4.75V EVR VCC = 3.15V 1.0 2.0 VCC = 4.75V EVR VCC = 3.15V 3.0 1.0 Pin 17 (MTF0) voltage [V] 15 10 5 0 2.0 Pin 24 (MTQ) voltage [V] Middle tune boost control Boost [dB] Center frequency fo [MHz] 15 VCC = 4.75V EVR VCC = 3.15V 1.0 2.0 Pin 15 (MTG) voltage [V] – 24 – 3.0 3.0 CXA2002R Package Outline Unit : mm 48PIN LQFP (PLASTIC) 9.0 ± 0.2 ∗ 7.0 ± 0.1 36 S 25 13 0.5 ± 0.2 B A 48 (8.0) 24 37 (0.22) 12 1 + 0.05 0.127 – 0.02 0.5 + 0.08 0.18 – 0.03 + 0.2 1.5 – 0.1 0.13 M 0.1 S 0.5 ± 0.2 (0.18) 0° to 10° DETAIL B:SOLDER DETAIL A 0.18 ± 0.03 0.127 ± 0.04 + 0.08 0.18 – 0.03 (0.127) +0.05 0.127 – 0.02 0.1 ± 0.1 DETAIL B:PALLADIUM NOTE: Dimension “∗” does not include mold protrusion. PACKAGE STRUCTURE PACKAGE MATERIAL EPOXY RESIN SOLDER/PALLADIUM PLATING SONY CODE LQFP-48P-L01 LEAD TREATMENT EIAJ CODE LQFP048-P-0707 LEAD MATERIAL 42/COPPER ALLOY PACKAGE MASS 0.2g JEDEC CODE – 25 –