BA3308F Rohm, BA3308F Datasheet
BA3308F
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BA3308F Summary of contents
Page 1
... Dual preamplifier with ALC BA3308 / BA3308F The BA3308 and BA3308F are dual preamplifier ICs with built-in ALC circuits, and have been designed for use in stereo radio-cassette recorders and tape recorders. They come in compact 9-pin SIP (BA3308) and 14-pin MF (BA3308F) packages, and have two record / playback preamplifiers, and an ALC circuit. The preamplifiers have high gain and low distortion, and can be directly coupled to the tape head without coupling capacitors. This prevents tape head magnetization and “ ...
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... THD 0.1 0 0.6 1.2 Vrms OM V 1.0 2.0 Vrms NIN ALC ALC 0 2 BA3308 / BA3308F ch2 N. N. N.C. Conditions V 0Vrms IN V 10dBV OUT NAB34dB, V 40mVrms OUT THD 1% Conversion with R 2.2k and g NAB34dB at 1kHz R 3. 70dBV G IN reference, THD 3% V 60dBV, 30dBV ...
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... SW3A SW3B 1 120k V 30k SW1A SW6A SW1B Fig. 1 Application example circuit PCB (copper side) ch2 220 R 6 18k 3. 100 F INPUT2 and R , connect 5 6 BA3308 / BA3308F ch2 0.1 F 1.2k 2 SW4B 33k SW2B OUTPUT2 V 100 F ~ 30k INPUT1 SW6B BA3308 1pin (40 60mm) Fig.3 3/8 ...
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... The operating point of the amplifier’s ch1 and ch2 output 7 (an effective value of approximately 0.75V), the F and R , but if they are too large the S/N ratio will worsen and R values of around several k ohms the shorter the attack time. 7 BA3308 / BA3308F 9V 1000 100 F 120 470 10k 1 2 ...
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... OUTPUT Fig.5 ch1 (ch2) Comp 4. (DC AC) OUT 3 ( Fig.6 • VS, V characteristic (see Fig.19), even if the V CC ch2 (ch1) ch2 (ch1 ch2 ch2 (ch1) (ch1) Cont BA3308 BA3308 / BA3308F voltage is made larger than 5V, CC and R that are connected to the input 5/8 ...
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... To ensure correct operation of this circuit, use the values given in the application example circuit for Application board component layout (component side BA3308 (1) Recording BA3308 3 ( 120k 0.027 OUTPUT that is connected to pin Fig.8 BA3308 / BA3308F and C connected to pins 1 and 9, and the JPW BA3308 JPW JPW (2) Playback , C and 4 8 6/8 ...
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... CC Fig.13 Voltage gain vs. power supply voltage 52dB 1Vrms OUT 20 R 10k 100 10 100 1k 10k 100k FREQUENCY : f (Hz) Fig.16 Channel separation vs. frequency BA3308 / BA3308F 100 300Vrms OUT R 10K FLAT 40 NAB 100 1k 10k 100k FREQUENCY : f (Hz) Fig.11 Voltage gain vs. frequency 120 300mVrms ...
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... POWER SUPPLY VOLTAGE : V (V) CC Fig.19 Maximum output voltage vs. power supply voltage BA3308F 8.7 0 0.3 0.1 1.27 BA3308 / BA3308F 2 1.8 1.6 1.4 1.2 1 0.8 0.6 0.4 0 100 1k LOAD RESISTANCE : R L Fig.20 Maximum output voltage vs. load resistance 0.4 0.1 0.3Min. 0.15 SOP14 V 7V ...