AN3328S

AN3328S PANASONIC | Alldatasheet

Document overview

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Technical content

2-head recording and playback amplifier IC (A2) for HiFi VCR n Overview The AN3328S is a 2-head recording and play- back 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 volt- age is 5 V of single supply. n Features

• 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) n Applications
• HiFi VCR SOP016-P-0225C Unit: mm n Block Diagram HA1 HA2 LH Det Curr. Amp. AGC REC / PB selectHSW CH1 in GND (small signal) CH2 in REC reg2 REC out REC C GND REC reg1 Curr. emph. SW PB out & REC / mute REC in V CC REC curr. monitor 10.09 – 0.20 16 9 (0.60) 0.40 – 0.10 Seating plane Seating plane 4.30 – 0.20 6.40 – 0.30 1.27 +0.10 0.15 -0.05 0° to 10° 0.50 – 0.20

Pin No. Description

1 Audio head SW

2 REC regulator1

3 Head amp. input ch.1

4 GND (small signal)

5 Head amp. input ch.2

6 REC regulator2

7 REC out

8 Curr. emph. SW Pin No. Description 9 REC curr. monitor (control)

10 V CC

11 REC AGC det

12 GND

13 REC input

14 PB out & REC / mute SW

15 REC C

16 REC/PB select SW

Parameter Symbol Rating Unit Supply voltage V CC 6V Supply current I CC ¾ mA Power dissipation*2 PD 240 mW Operating ambient temperature*1 T opr -20 to +70 °C Storage temperature*1 Tstg -55 to +125 °C 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. n Absolute Maximum Ratings Parameter Symbol Range Unit Supply voltage V CC 4.5 to 5.5 V n Recommended Operating Range

Parameter Symbol Conditions Min Typ Max Unit REC I 10(REC) V CC = 5.0 V 56 (66) 76 mA Circuit current REC / PB SW: High REC I 7 V CC = 5.0 V 44 (48) 52 mA[p-p] AGC level REC / PB SW: High REC DI 7 V CC = 5.0 V ¾ (0.2) 1.0 dB AGC control characteristics REC / PB SW: High REC Recording current D 7 V CC = 5.0 V, REC / PB SW: High ¾ (-43) -35 dB 2nd harmonic distortion V IN = 260 mV[p-p], 2 MHz REC V 16H V CC = 5.0 V, REC / Mute SW: Low 3.6 ¾ Vcc V Mode hold voltage V IN = 260 mV[p-p], 2 MHz REC V 8L V CC = 5.0 V 0 ¾ 1.2 V Over REC hold voltage REC / PB SW: High REC V 8M V CC = 5.0 V 1.8 ¾ 3.2 V Normal hold voltage REC / PB SW: High REC V 8H V CC = 5.0 V 3.8 ¾ Vcc V S-VHS hold voltage REC / PB SW: High REC I 7L fi I7 V CC = 5.0 V 1.3 (1.8) 2.3 dB Over REC current ratio REC / PB SW: High REC I 7H fi I7 V CC = 5.0 V -2.3 (-1.8) -1.3 dB S-VHS current ratio REC / PB SW: High REC V 14H(REC) V CC = 5.0 V 3.6 ¾ Vcc V Mute hold voltage 1 REC / PB SW: High REC V 14L(REC) V CC = 5.0 V 0 ¾ 1.4 V Mute hold voltage 2 REC / PB SW: High PB I 10(PB) V CC = 5.0 V 9 (13) 17 mA Circuit current REC / PB SW: Low PB G 3-14 V CC = 5.0 V, REC / PB SW: Low 72 (76) 80 dB CH1 gain HSW: High, V IN = 0.1 mV[p-p], 2 MHz PB G 5-14 V CC = 5.0 V, REC / PB SW : Low 72 (76) 80 dB CH2 gain HSW: Low, V IN = 0.1 mV[p-p], 2 MHz PB DG 3-14 V CC = 5.0 V, REC / PB SW: Low 0 (0.5) 1 dB CH1 1.5 M / 2 M gain ratio HSW: High, V IN = 0.1 mV[p-p], 2 MHz PB DG 5-14 V CC = 5.0 V, REC / PB SW: Low 0 (0.5) 1 dB CH2 1.5 M / 2 M gain ratio HSW: Low, V IN = 0.1 mV[p-p], 2 MHz PB G 3-14 fi V CC = 5.0 V, REC / PB SW: Low -20 2d B CH1 / CH2 gain ratio G 5-14 V IN = 0.1 mV[p-p], 2 MHz Noise referred to PB N 3-14 V CC = 5.0 V ¾¾ 1.0 mV[rms] CH1 input REC / PB SW: Low HSW: High Noise referred to PB N 5-14 V CC = 5.0 V ¾¾ 1.0 mV[rms] CH2 input REC / PB SW: Low HSW: Low n Electrical Characteristics at Ta = 25°C Note) The typical value in the parenthesis is not the guaranteed one.

Parameter Symbol Conditions Min Typ Max Unit REC Cross modulation CMD 0.4M V CC = 5.0 V ¾ (-45) ¾ dB distortion at 0.4 MHz REC / PB SW: High REC Cross modulation CMD 0.9M V CC = 5.0 V ¾ (-52) ¾ dB distortion at 0.9 MHz REC / PB SW: High REC I M / I7 V CC = 5.0 V ¾¾ - 40 dB Muting ratio REC / PB SW: High PB CT 1 V CC = 5.0 V ¾- 40 ¾ dB Crosstalk CH1 to CH2 REC / PB SW: Low PB CT 2 V CC = 5.0 V ¾- 40 ¾ dB Crosstalk CH2 to CH1 REC / PB SW: Low PB CH1, Output 2nd D 3-14 V CC = 5.0 V, HSW: High ¾- 50 ¾ dB harmonic distortion REC / PB SW: Low PB CH2, Output 2nd D 5-14 V CC = 5.0 V, HSW : Low ¾- 50 ¾ dB harmonic distortion REC / PB SW: Low Parameter Symbol Conditions Min Typ Max Unit PB V 16L V CC = 5.0 V 0 ¾ 1.4 V Mode hold voltage REC / PB SW: Low PB V 1H(PB) V CC = 5.0 V 3.6 ¾ V CC V CH1 hold voltage REC / PB SW: Low PB V 1L(PB) V CC = 5.0 V 0 ¾ 1.4 V CH2 hold voltage REC / PB SW: Low PB DV OFFSET V CC = 5.0 V ¾¾ 20 mV[p-p] HSW DC unbalanced REC / PB SW: Low n Electrical Characteristics at Ta = 25°C (continued)

• Design reference data Note) The characteristics listed below are theoretical values based on the IC design and are not guaranteed. Note) The typical value in the parenthesis is not the guaranteed one.

Pin No. Equivalent Circuit Description Voltage Remark

1 Audio head SW Input signal At open :

(ch.1 Select) 2 REC regulator 1 D.C 3 Head amp. input ch.1 4 ¾ GND (small signal) ¾¾ 5 Head amp. input ch.2 n Terminal Equivalent Circuits 23 kW 3 kW 3 kW 3 kW 2.5 V 5 V 0 V 46.6 kW 101.2 kW18 kW REC: ON 1.125 kW 6 kW2.1 V 380 W 15 kW 0.7 V 380 W 15 kW 1.125 kW 6 kW 2.1 V 0.7 V

n Terminal Equivalent Circuits (continued) Pin No. Equivalent Circuit Description Voltage Remark 6 REC regulator 2 D.C 7 REC out A.C 9 REC curr. monitor (control) 8 Curr. emph. SW Input signal At open: Middle (Curr. emph. normal mode) 10 ¾ V CC ¾¾ 11 REC AGC det D.C 12 ¾ GND ¾¾ REC: ON 18 kW 101.2 kW 46.6 kW 800 W 750 W 200 W 75 kW 45 kW 1.5 V 3.5 V 9 kW 69 kW 69 kW 75 kW 23 kW 23 kW 2.5 V 5 V 0 V

200 W200 W

n Terminal Equivalent Circuits (continued) Pin No. Equivalent Circuit Description Voltage Remark

14 PB out & At open: Low

REC / mute SW (REC Mute OFF) Input signal 15 Audio REC D.C capacitor

16 REC / PB Input signal At open: Low

select SW (PB-Mode) 200 W 20 kW 2.7 V 2.7 V 20 kW 12 kW 10.5 kW 2 V 80 W 200 W 46 kW 3 kW 1.8 kW 69 kW 2.5 V 1.8 V 4.3 V 1.8 V 1.5 kW 6k W 10.7k W 200 W 500 W 1.5 kW 200 W 4.5kW 69 kW 2.5 V69 kW100 kW23 kW

100 W100 W

n Application Circuit Example 5 V 3.3mF 0.01 mF 0.01 mF 47 mF 100mH 0.01 mF V CC 12 W 0.01 mF 0.01 mF 0.01 mF 100 W HA1 HA2 LH Det Curr. Amp. AGC REC / PB LowHSW Curr. emph. SW REC/mute High FM out FM in