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| ICs for VCR AN3371SB 2-head recording/playback amplifier IC s Overview The AN3371SB is a 2-head recording/playback amplifier IC for VCR. 15.20.3 36 19 0.2 +0.10 -0.05 Unit: mm * Pin and package compatible with the 4-head recording/playback amplifier AN3361SB. * Recording current is adjustment-free. * REC in and PB out pins are in common (RIPO) * 12 V single supply voltage (PB 5 V is generated inside.) 8.40.3 11.930.3 s Features 1 18 1.300.25 1.300.25 * VCR 0.30.11 0.8 Seating plane SSOP036-P-0450A s Block Diagram REC in / PB out 0.10.1 2.850.2 s Applications Open ZAP4 Open ZAP3 20 REC F.B. 17 25 D-REC-H VCC 12 V 31 PB-L 36 35 34 33 32 30 29 28 27 26 24 23 22 21 PB 5V P R Chroma amp. HL 10 11 12 13 14 15 16 Damping 3 Channel 1 H.A. in 4 GND 5 Channel 2 H.A. in 6 Damping 7 Open ZAP1 REC amp. out 1 HSW 18 1 2 8 9 19 Open ZAP2 GND 0.5 AN3371SB s Pin Descriptions Pin No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 Description HSW input pin N.C. Channel-1 head amp. damping Channel-1 head amp. input Small signal GND Channel-2 head amp. input Channel-2 head amp. damping N.C. N.C. N.C. N.C. N.C. ZAP1 (ZAP write pin) N.C N.C. N.C. REC feedback REC amp. output Pin No. 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 ICs for VCR Description ZAP2 (ZAP write pin) ZAP3 (ZAP write pin) ZAP4 (ZAP write pin) N.C. N.C. N.C. D-REC-H input pin N.C. N.C. Main GND N.C REC input / PB output pin PB-L input pin N.C. N.C. N.C. VCC (12 V) Capacitor for PB 5 V s Absolute Maximum Ratings Parameter Supply voltage Supply current Power dissipation *2 *1 Symbol VCC ICC PD Topr Tstg Rating 13 440 -20 to +70 -55 to +125 Unit V mA mW C C Operating ambient temperature Storage temperature *1 Note) *1: Except for the operating ambient temperature and storage temperature, all ratings are for Ta = 25C. *2: The power dissipation shown is for the IC package in free air at Ta = 70C. s Recommended Operating Range Parameter Supply voltage Symbol VCC Range 11.5 to 12.5 Unit V 2 ICs for VCR s Electrical Characteristics at Ta = 25C Parameter REC circuit current PB circuit current HSW DC unbalance Channel-1 gain Channel-2 gain Input referred noise 1 Input referred noise 2 High-level HSW hold voltage Low-level HSW hold voltage High-level D-REC-H hold voltage Low-level D-REC-H hold voltage Channel-1 gain Channel-2 gain High-level PB-L hold voltage Low-level PB-L hold voltage REC recording current output * Design reference data Note) The characteristics listed below are theoretical values based on the IC design and are not guaranteed. AN3371SB Symbol I35R I35P HSW G4-30 G6-30 N4-30 /G4-30 N6-30 /G6-30 VH1 VL1 VH25 VL25 GA4-30 GA6-30 VH31 VL31 I18 Conditions VCC = 12 V VCC = 12 V VCC = 12 V VCC = 12 V VCC = 12 V VCC = 12 V VCC = 12 V VCC = 12 V VCC = 12 V VCC = 12 V VCC = 12 V VCC = 12 V VCC = 12 V VCC = 12 V VCC = 12 V VCC = 12 V Min 27 16 52 52 3.6 0.0 3.6 0.0 49 49 3.6 0.0 28.2 Typ 30.0 Max 49 30 Unit mA mA 100 mV[p-p] 60 60 1 1 5.0 1.4 12.0 1.4 58 58 5.0 1.4 dB dB V[rms] V[rms] V V V V dB dB V V 31.8 mA[p-p] Parameter REC circuit current PB circuit current Record current secondary distortion Cross modulation relative level Channel-1 gain Channel-2 gain REC recording current output Symbol I35R I35P D2f DM G4-30 G6-30 I18 Conditions VCC = 12 V VCC = 12 V VCC = 12 V VCC = 12 V VCC = 12 V VCC = 12 V VCC = 12 V Min 28.8 Typ 38 23 -43 -48 56 56 30 Max Unit mA mA dB dB dB dB 31.2 mA[p-p] 3 AN3371SB s Terminal Equivalent Circuits Pin No. 1 Equivalent circuit 5V 100 A 3 k 3 k 23 k 2.5 V ICs for VCR Description HSW input pin: High: 3.6 V to 5.0 V Low: 0.0 V to 1.4 V 1 2 3 N.C. 5V Channel-1 head amp. damping: DC 1.5 V 90 4.5 k 4 4 1.24 V 3 Channel-1 head amp. input: DC 0.7 V 15 k 4 5 6 4.5 k Small signal GND Channel-2 head amp. input: DC 0.7 V 15 k 6 7 4.5 k 5V Channel-2 head amp. damping: DC 1.5 V 90 4.5 k 7 1.24 V 4 ICs for VCR s Terminal Equivalent Circuits (continued) Pin No. 8 9 10 11 12 13 200 13 Equivalent circuit 12 V 90 k 20 k 30 k N.C. N.C. N.C. N.C. N.C. ZAP1 (ZAP write pin) Description AN3371SB 14 15 16 17 N.C. N.C. N.C. 9.6 k 12 V 17 REC feedback: 6V 18 18 18 9.6 k 540 17 19 200 19 12 V 90 k 20 k 30 k REC amp. output: DC 6 V ZAP2 (ZAP write pin) 5 AN3371SB s Terminal Equivalent Circuits (continued) Pin No. 20 200 20 Equivalent circuit 12 V 90 k 20 k 30 k Description ZAP3 (ZAP write pin) ICs for VCR 21 200 21 12 V 90 k 20 k 30 k ZAP4 (ZAP write pin) 22 23 24 25 100 A 20 k 25 100 k 100 A 100 A N.C. N.C. N.C. D-REC-H input pin: High: 3.6 V to 12.0 V Low: 0.0 V to 1.4 V 2.5 V 26 27 28 29 30 PB 5 V 30 2V 12 V N.C. N.C. Main GND N.C. REC input/PB output pin 30 k 1.5 mA 30 k 6 ICs for VCR s Terminal Equivalent Circuits (continued) Pin No. 31 Equivalent circuit Description PB-L input pin: High: 3.6 V to 5.0 V Low: 0.0 V to 1.4 V AN3371SB 100 A 23 k 31 2.5 V 32 33 34 35 36 N.C. N.C. N.C. VCC (12 V) Capacitor for PB 5 V s Application Circuit Example VCC 12 V REC in / PB out D-REC-H PB-L Open ZAP4 Open ZAP3 20 REC F.B. 17 28 GND 36 35 34 33 32 31 30 29 27 26 25 24 23 22 21 PB 5V P R Chroma amp. HL 10 11 12 13 14 15 16 Channel 1 H.A. in 4 Channel 2 H.A. in 6 HSW REC amp. out 18 1 2 Damping 3 GND 5 Damping 7 8 9 Open ZAP1 19 Open ZAP2 7 |
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