ICs for VCR AN3371SB 2-head recording/playback amplifier IC ■ Overview Unit: mm 0.2 +0.10 –0.05 15.2±0.3 The AN3371SB is a 2-head recording/playback amplifier IC for VCR. 36 19 1 18 8.4±0.3 11.93±0.3 ■ Features 0.5 • 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.) ■ Applications 0.3±0.11 • VCR 0.8 Seating plane 1.30±0.25 0.1±0.1 2.85±0.2 1.30±0.25 SSOP036-P-0450A 24 23 22 21 20 19 13 14 15 16 REC F.B. 17 18 Open ZAP2 25 D-REC-H 12 Open ZAP3 26 11 Open ZAP4 27 10 GND 28 9 P 29 PB 5V 8 REC in / PB out 30 31 PB-L 32 33 34 35 36 VCC 12 V ■ Block Diagram R Chroma amp. REC amp. out Open ZAP1 Damping 7 Channel 2 H.A. in 6 GND 5 Channel 1 H.A. in 4 2 Damping 3 HSW 1 H L 1 AN3371SB ICs for VCR ■ Pin Descriptions Pin No. Description Pin No. Description 1 HSW input pin 19 ZAP2 (ZAP write pin) 2 N.C. 20 ZAP3 (ZAP write pin) 3 Channel-1 head amp. damping 21 ZAP4 (ZAP write pin) 4 Channel-1 head amp. input 22 N.C. 5 Small signal GND 23 N.C. 6 Channel-2 head amp. input 24 N.C. 7 Channel-2 head amp. damping 25 D-REC-H input pin 8 N.C. 26 N.C. 9 N.C. 27 N.C. 10 N.C. 28 Main GND 11 N.C. 29 N.C 12 N.C. 30 REC input / PB output pin 13 ZAP1 (ZAP write pin) 31 PB-L input pin 14 N.C 32 N.C. 15 N.C. 33 N.C. 16 N.C. 34 N.C. 17 REC feedback 35 VCC (12 V) 18 REC amp. output 36 Capacitor for PB 5 V ■ Absolute Maximum Ratings Parameter Supply voltage Symbol Rating Unit VCC 13 V ICC mA PD 440 mW Topr −20 to +70 °C Tstg −55 to +125 °C Supply current Power dissipation *2 Operating ambient temperature Storage temperature *1 *1 Note) *1: Except for the operating ambient temperature and storage temperature, all ratings are for Ta = 25°C. *2: The power dissipation shown is for the IC package in free air at Ta = 70°C. ■ Recommended Operating Range Parameter Supply voltage 2 Symbol Range Unit VCC 11.5 to 12.5 V ICs for VCR AN3371SB ■ Electrical Characteristics at Ta = 25°C Parameter Symbol Conditions Min Typ Max Unit REC circuit current I35R VCC = 12 V 27 49 mA PB circuit current I35P VCC = 12 V 16 30 mA HSW DC unbalance HSW VCC = 12 V 100 mV[p-p] Channel-1 gain G4-30 VCC = 12 V 52 60 dB Channel-2 gain G6-30 VCC = 12 V 52 60 dB Input referred noise 1 N4-30 /G4-30 VCC = 12 V 1 µV[rms] Input referred noise 2 N6-30 /G6-30 VCC = 12 V 1 µV[rms] High-level HSW hold voltage VH1 VCC = 12 V 3.6 5.0 V Low-level HSW hold voltage VL1 VCC = 12 V 0.0 1.4 V High-level D-REC-H hold voltage VH25 VCC = 12 V 3.6 12.0 V Low-level D-REC-H hold voltage VL25 VCC = 12 V 0.0 1.4 V Channel-1 gain GA4-30 VCC = 12 V 49 58 dB Channel-2 gain GA6-30 VCC = 12 V 49 58 dB High-level PB-L hold voltage VH31 VCC = 12 V 3.6 5.0 V Low-level PB-L hold voltage VL31 VCC = 12 V 0.0 1.4 V REC recording current output I18 VCC = 12 V 28.2 30.0 31.8 mA[p-p] • Design reference data Note) The characteristics listed below are theoretical values based on the IC design and are not guaranteed. Parameter Symbol Conditions Min Typ Max Unit REC circuit current I35R VCC = 12 V 38 mA PB circuit current I35P VCC = 12 V 23 mA Record current secondary distortion D2f VCC = 12 V −43 dB Cross modulation relative level DM VCC = 12 V −48 dB Channel-1 gain G4-30 VCC = 12 V 56 dB Channel-2 gain G6-30 VCC = 12 V 56 dB I18 VCC = 12 V 28.8 30 REC recording current output 31.2 mA[p-p] 3 AN3371SB ICs for VCR ■ Terminal Equivalent Circuits Pin No. Equivalent circuit 1 5V Description HSW input pin: High: 3.6 V to 5.0 V Low: 0.0 V to 1.4 V 100 µA 3 kΩ 3 kΩ 23 kΩ 2.5 V 1 2 N.C. 3 Channel-1 head amp. damping: DC 1.5 V 5V 90 Ω 1.24 V 4.5 kΩ 3 4 4 Channel-1 head amp. input: DC 0.7 V 15 kΩ 4.5 kΩ 4 5 Small signal GND 6 Channel-2 head amp. input: DC 0.7 V 15 kΩ 4.5 kΩ 6 7 Channel-2 head amp. damping: DC 1.5 V 5V 90 Ω 1.24 V 4.5 kΩ 7 4 ICs for VCR AN3371SB ■ Terminal Equivalent Circuits (continued) Pin No. Equivalent circuit Description 8 N.C. 9 N.C. 10 N.C. 11 N.C. 12 N.C. 13 12 V ZAP1 (ZAP write pin) 90 kΩ 200 Ω 13 20 kΩ 30 kΩ 14 N.C. 15 N.C. 16 N.C. 17 12 V 9.6 kΩ 17 REC feedback: 6V 18 18 REC amp. output: DC 6 V 18 9.6 kΩ 540 Ω 17 19 12 V 200 Ω 19 ZAP2 (ZAP write pin) 90 kΩ 20 kΩ 30 kΩ 5 AN3371SB ICs for VCR ■ Terminal Equivalent Circuits (continued) Pin No. Equivalent circuit 20 Description 12 V ZAP3 (ZAP write pin) 90 kΩ 200 Ω 20 20 kΩ 30 kΩ 21 12 V ZAP4 (ZAP write pin) 90 kΩ 200 Ω 21 20 kΩ 30 kΩ 22 N.C. 23 N.C. 24 N.C. 100 µA 25 100 µA 100 µA D-REC-H input pin: High: 3.6 V to 12.0 V Low: 0.0 V to 1.4 V 20 kΩ 25 100 kΩ 2.5 V 26 N.C. 27 N.C. 28 Main GND 29 N.C. 30 REC input/PB output pin 12 V PB 5 V 30 2V 30 kΩ 1.5 mA 6 30 kΩ ICs for VCR AN3371SB ■ Terminal Equivalent Circuits (continued) Pin No. Equivalent circuit 31 Description PB-L input pin: High: 3.6 V to 5.0 V Low: 0.0 V to 1.4 V 100 µA 23 kΩ 31 2.5 V 32 N.C. 33 N.C. 34 N.C. 35 VCC (12 V) 36 Capacitor for PB 5 V 25 24 23 22 21 20 19 12 13 14 15 16 REC F.B. 17 REC amp. out 18 Open ZAP2 26 11 Open ZAP3 27 10 Open ZAP4 D-REC-H 28 GND 9 REC in / PB out 29 P 8 PB-L PB 5V 30 31 32 33 34 35 36 VCC 12 V ■ Application Circuit Example R Chroma amp. Open ZAP1 Damping 7 Channel 2 H.A. in 6 GND 5 Channel 1 H.A. in 4 Damping 3 2 HSW 1 H L 7