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BU7150NUV Datasheet, PDF (9/17 Pages) Rohm – Headphone Amplifier Designed for 0.93V Low Voltage Operation | |||
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BU7150NUV
Technical Note
âFunctional descriptions
[Timing Chart]
BU7150NUV can control many mode states. âActiveâ is normal operation state for output signal. âShutdownâ is IC power
down state for low power. âMuteâ is Headphone amplifier power down state for low power and fast turn-on, because
keeping BIAS voltage = VDD/2. âTurn onâ and âTurn offâ are sweep state.
Fig. 37 Timing Chart (MODE = VSS: Single-ended mode)
Fig. 38 Timing Chart (MODE = VDD: BTL- mode)
Also, BU7150NUV has wait time for reduction of pop-sound at turn-on and turn-off. Turn-on wait time is 70msec from IN1
voltage = VDD/2. Turn-off wait time is 140msec from BYPASS voltage = 100mV. Please don't change SDB, MUTEB
condition at 70msec and 140msec wait- time.
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© 2011 ROHM Co., Ltd. All rights reserved.
9/16
2011.05 - Rev.C
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