ICs for VCR AN3328S 2-head recording and playback amplifier IC (A2) for HiFi VCR ■ Overview Unit: mm 10.09 ± 0.20 9 +0.10 4.30 ± 0.20 6.40 ± 0.30 16 0.15−0.05 The AN3328S is a 2-head recording and playback amplifier IC for HiFi audio, and realized reduction of pin numbers. The package is a small outline of 16 pins, 1.27 mm pitch and supply voltage is 5 V of single supply. 0° to 10° ■ Features 0.50 ± 0.20 (0.60) 0.65 ± 0.10 1.50 ± 0.20 8 0.65 ± 0.10 0.10 ± 0.10 1 • Damping-less amp. in playback system • No adjustment of recording current by AGC • 3-step switchover of recording current level with the current emphasis switch (typ. ± 1.8 dB) 1.27 0.40 ± 0.10 ■ Applications • HiFi VCR Seating plane Seating plane SOP016-P-0225C REC curr. monitor 9 VCC 10 11 12 GND REC in 13 14 PB out & REC / mute REC C 15 16 REC / PB select ■ Block Diagram Det AGC H L Curr. Amp. 8 Curr. emph. SW REC out 7 REC reg2 6 CH2 in 5 4 HA2 GND (small signal) 3 CH1 in 2 REC reg1 HSW 1 HA1 1 AN3328S ICs for VCR ■ Pin Descriptions Pin No. Description Pin No. Description 1 Audio head SW 9 REC curr. monitor (control) 2 REC regulator1 10 VCC 3 Head amp. input ch.1 11 REC AGC det 4 GND (small signal) 12 GND 5 Head amp. input ch.2 13 REC input 6 REC regulator2 14 PB out & REC / mute SW 7 REC out 15 REC C 8 Curr. emph. SW 16 REC/PB select SW ■ Absolute Maximum Ratings Parameter Symbol Rating Unit Supply voltage VCC 6 V Supply current ICC mA Power dissipation*2 PD 240 mW Operating ambient temperature*1 Topr -20 to +70 °C Tstg -55 to +125 °C Storage temperature*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 VCC Range 4.5 to 5.5 Unit V ICs for VCR AN3328S ■ Electrical Characteristics at Ta = 25°C Parameter Symbol Conditions Min Typ Max Unit I10(REC) VCC = 5.0 V REC / PB SW: High 56 (66) 76 mA I7 VCC = 5.0 V REC / PB SW: High 44 (48) 52 mA[p-p] REC AGC control characteristics DI7 VCC = 5.0 V REC / PB SW: High (0.2) 1.0 dB REC Recording current 2nd harmonic distortion D7 VCC = 5.0 V, REC / PB SW: High VIN = 260 mV[p-p], 2 MHz (−43) −35 dB 3.6 Vcc V REC Circuit current REC AGC level REC Mode hold voltage V16H VCC = 5.0 V, REC / Mute SW: Low VIN = 260 mV[p-p], 2 MHz REC Over REC hold voltage V8L VCC = 5.0 V REC / PB SW: High 0 1.2 V REC Normal hold voltage V8M VCC = 5.0 V REC / PB SW: High 1.8 3.2 V REC S-VHS hold voltage V8H VCC = 5.0 V REC / PB SW: High 3.8 Vcc V REC Over REC current ratio I7L → I7 VCC = 5.0 V REC / PB SW: High 1.3 (1.8) 2.3 dB REC S-VHS current ratio I7H → I7 VCC = 5.0 V REC / PB SW: High −2.3 (−1.8) −1.3 dB REC Mute hold voltage 1 V14H(REC) VCC = 5.0 V REC / PB SW: High 3.6 Vcc V REC Mute hold voltage 2 V14L(REC) VCC = 5.0 V REC / PB SW: High 0 1.4 V PB Circuit current I10(PB) VCC = 5.0 V REC / PB SW: Low 9 (13) 17 mA PB CH1 gain G3-14 VCC = 5.0 V, REC / PB SW: Low HSW: High, VIN = 0.1 mV[p-p], 2 MHz 72 (76) 80 dB PB CH2 gain G5-14 VCC = 5.0 V, REC / PB SW : Low HSW: Low, VIN = 0.1 mV[p-p], 2 MHz 72 (76) 80 dB PB CH1 1.5 M / 2 M gain ratio DG3-14 VCC = 5.0 V, REC / PB SW: Low HSW: High, VIN = 0.1 mV[p-p], 2 MHz 0 (0.5) 1 dB PB CH2 1.5 M / 2 M gain ratio DG5-14 VCC = 5.0 V, REC / PB SW: Low HSW: Low, VIN = 0.1 mV[p-p], 2 MHz 0 (0.5) 1 dB PB CH1 / CH2 gain ratio G3-14 → G5-14 VCC = 5.0 V, REC / PB SW: Low VIN = 0.1 mV[p-p], 2 MHz −2 0 2 dB Noise referred to PB CH1 input N3-14 VCC = 5.0 V REC / PB SW: Low HSW: High 1.0 mV[rms] Noise referred to PB CH2 input N5-14 VCC = 5.0 V REC / PB SW: Low HSW: Low 1.0 mV[rms] Note) The typical value in the parenthesis is not the guaranteed one. 3 AN3328S ICs for VCR ■ Electrical Characteristics at Ta = 25°C (continued) Parameter Symbol Conditions Min Typ Max Unit PB Mode hold voltage V16L VCC = 5.0 V REC / PB SW: Low 0 1.4 V PB CH1 hold voltage V1H(PB) VCC = 5.0 V REC / PB SW: Low 3.6 VCC V PB CH2 hold voltage V1L(PB) VCC = 5.0 V REC / PB SW: Low 0 1.4 V PB HSW DC unbalanced DVOFFSET VCC = 5.0 V REC / PB SW: Low 20 mV[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 Typ Max Unit REC Cross modulation distortion at 0.4 MHz CMD0.4M VCC = 5.0 V REC / PB SW: High (−45) dB REC Cross modulation distortion at 0.9 MHz CMD0.9M VCC = 5.0 V REC / PB SW: High (−52) dB I M / I7 VCC = 5.0 V REC / PB SW: High −40 dB PB Crosstalk CH1 to CH2 CT1 VCC = 5.0 V REC / PB SW: Low −40 dB PB Crosstalk CH2 to CH1 CT2 VCC = 5.0 V REC / PB SW: Low −40 dB PB CH1, Output 2nd harmonic distortion D3-14 VCC = 5.0 V, HSW: High REC / PB SW: Low −50 dB PB CH2, Output 2nd harmonic distortion D5-14 VCC = 5.0 V, HSW : Low REC / PB SW: Low −50 dB REC Muting ratio Note) The typical value in the parenthesis is not the guaranteed one. 4 Min ICs for VCR AN3328S ■ Terminal Equivalent Circuits Pin No. Equivalent Circuit Description 1 Audio head SW Voltage Input signal Remark At open : High 5V (ch.1 Select) 0V 3 kΩ 3 kΩ 2.5 V 23 kΩ 1 3 kΩ 2 REC regulator 1 D.C 46.6 kΩ REC: ON 2 18 kΩ 101.2 kΩ 3 Head amp. input 1.125 kΩ ch.1 0.7 V 2.1 V 380 Ω 6 kΩ 15 kΩ 3 4 GND (small signal) 5 Head amp. input ch.2 1.125 kΩ 0.7 V 2.1 V 5 380 Ω 6 kΩ 15 kΩ 5 AN3328S ICs for VCR ■ Terminal Equivalent Circuits (continued) Pin No. Equivalent Circuit Description 6 REC regulator Voltage 2 Remark D.C 46.6 kΩ REC: ON 6 18 kΩ 101.2 kΩ 7 REC out A.C 750 Ω 7 9 REC curr. monitor (control) 9 800 Ω 200 Ω 8 Curr. emph. SW Input signal At open: Middle 75 kΩ 45 kΩ 9 kΩ (Curr. emph. 5V 23 kΩ normal mode) 2.5 V 3.5 V 23 kΩ 69 kΩ 8 75 kΩ 69 kΩ 10 0V 1.5 V 11 VCC REC AGC det D.C 200 Ω 200 Ω 20 12 6 GND ICs for VCR AN3328S ■ Terminal Equivalent Circuits (continued) Pin No. Equivalent Circuit Description 13 Voltage Remark REC input 10.5 kΩ 20 kΩ 20 kΩ 2V 12 kΩ 2.7 V 2.7 V 200 Ω 13 14 PB out & REC / mute SW 80 Ω At open: Low 1.8 V 46 kΩ (REC Mute OFF) 3 kΩ 200 Ω 2.5 V 1.8 kΩ Input signal 14 4.3 V 69 kΩ 1.8 V 15 Audio REC D.C capacitor 1.5 kΩ 200 Ω 500 Ω 6k Ω 10.7k Ω 200 Ω 1.5 kΩ 15 16 REC / PB Input signal select SW At open: Low (PB-Mode) 4.5kΩ 5V 0V 100 Ω 100 Ω 23 kΩ 100 kΩ 69 kΩ 69 kΩ 2.5 V 16 7 8 Curr. emph. SW 0.01 µF 8 7 6 5 4 3 HA1 0.01 µF 0.01 µF 2 1 H 100 Ω HSW 9 10 11 12 13 14 15 16 FM in 47 µF 100µH 0.01 µF 0.01 µF 12 Ω REC/mute High FM out 0.01 µF 3.3µF REC / PB Low AN3328S ICs for VCR ■ Application Circuit Example VCC 5V Det AGC L Curr. Amp. HA2