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BA7780KV Datasheet

Part Number BA7780KV
Manufacturers Rohm
Logo Rohm
Description Stereo zoom microphone amplifier for camcorders
Datasheet BA7780KV DatasheetBA7780KV Datasheet (PDF)

Video ICs Stereo zoom microphone amplifier for camcorders BA7780KV The BA7780KV is a microphone amplifier developed for use in camcorders. The IC features an electronic volume circuit for presetting the curve required for the stereo zoom function, a microphone element power supply regulator, a wind-noise rejection filter, a current limiting circuit for external accessory power supplies, and an input for external microphone input. The IC operates off a 3.3V power supply. Applications • Camcorde.

  BA7780KV   BA7780KV






Stereo zoom microphone amplifier for camcorders

Video ICs Stereo zoom microphone amplifier for camcorders BA7780KV The BA7780KV is a microphone amplifier developed for use in camcorders. The IC features an electronic volume circuit for presetting the curve required for the stereo zoom function, a microphone element power supply regulator, a wind-noise rejection filter, a current limiting circuit for external accessory power supplies, and an input for external microphone input. The IC operates off a 3.3V power supply. Applications • Camcorders Features • 1) Operates off a 3.0V to 5.25V power supply. 2) Zoom microphone processing function on one chip. 3) Built-in electronic volume for external setting of sensitivity and control voltage. 4) Adjustable microphone element sensitivity. 5) Matrix amplifier for stereo emphasis. 6) Automatic switching circuit for external inputs, and built-in external monaural decision circuit. •Absolute maximum ratings (Ta = 25°C) Parameter Power supply voltage Power dissipation Operating temperature Storage temperature Symbol VCC Pd Topr Tstg Limits 7.0 750∗ – 10 ~ + 70 – 55 ~ + 125 Unit V mW °C °C ∗ Reduced by 7.5mW for each increase in Ta of 1°C over 25°C. •Recommended operating conditions (Ta = 25°C) Parameter Power supply voltage Symbol VCCS Min. 3.0 Typ. — Max. 5.25 Unit V 1 Video ICs BA7780KV •Block diagram OUT AMP IN L PRE OUT L MTX OUT L INV OUT L GC OUT L BL OUT L SUB IN L MTX IN L HPF IN L MODE 43 EXT IN L INT IN L VREG L 48 GND L 49 MIX1 IN L 50 13dB 47 46 45.


2005-03-26 : HYB3116160BSJ    HYB3116160BSJ-50    HYB3116160BSJ-60    HYB3116160BSJ-70    HYB3116160BST-50    HYB3116160BST-60    HYB3116160BST-70    HYB3116400BJ-50    HYB3116400BJ-60    HYB3116400BJ-70   


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