CXA1910 查看數據表（PDF） - Sony Semiconductor

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CXA1910

Dolby B Type Noise Reduction System with Playback Equalizer

Sony Semiconductor 

CXA1910Q

Operation mode control (INSW, AUXSW, TAPESW, DRSW, NRSW, MSSW, MODESW)

The CXA1910Q has built in electronic switch circuits and the operations are controlled by the direct current

applied to each SW pin. The operation mode state for each switch is shown in the table below.

SW

NRSW

TAPESW

DRSW

NRMODE

MSSW

MSMODE

Function for Low input

NR OFF

70µs

PB FWD

DOLBY B

MS OFF

G2 (NOR) MODE

Function for High input

NR ON

120µs

PB RVS

NR OFF

MS ON

G1 (FF) MODE

Click noise can be reduced by the external CR time constant circuit for NR SW switching.

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