Headphone amplifier with internal LPF and EVR for CD-ROM
Optical disc ICs
Headphone amplifier with internal LPF and EVR for CD-ROM
BA3530FS
The BA3530FS is an H / P amplifier w...
Description
Optical disc ICs
Headphone amplifier with internal LPF and EVR for CD-ROM
BA3530FS
The BA3530FS is an H / P amplifier with internal secondary LPF and EVR circuits. When multibit output from a D / A converter is input, the secondary LPF outputs an audio signal. The amplifier circuit allows for line output and headphone output. The output level for headphones can be changed with the EVR circuit. This IC also has independent internal mute circuits for the left and right channels. FApplications CD-ROM drives and other products (with line and headphone output pins) that process digital audio signals FFeatures 1) Internal LPF, line amplifier and EVR. 2) Internal mute function. 3) Internal thermal shutdown circuit.
4) No attached components are needed for oscillation prevention, even at a load of 8Ω. 5) Mute function reduces the popping noises that can occur when the power is turned on and off.
FAbsolute maximum ratings (Ta = 25_C)
FRecommended operating conditions
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Optical disc ICs
FBlock diagram
BA3530FS
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Optical disc ICs
BA3530FS
FElectrical characteristics (unless otherwise noted, Ta = 25_C, VCC = 5.0V, line RL1 = 50kΩ, H / P RL2 = 32Ω, VIN = 0.8Vrms, f = 1kHz, EVR Max.)
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Optical disc ICs
FMeasurement circuit
BA3530FS
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Optical disc ICs
FApplication example
BA3530FS
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Optical disc ICs
FOperation notes (1) Preventing popping noises The BA3530FS has a mute function that reduces the popping noises that can occur when the power is turned on or off. Th...
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