BH3562F View Datasheet(PDF) - ROHM Semiconductor

Part Name

Description

Manufacturer

BH3562F

Post amplifier applicable with 1-bit D / A converter

ROHM Semiconductor 

Optical disc ICs

FOperation notes

(1) When the MUTE pin voltage reaches 1.5V or high-

er, the output voltage is muted and the bias level is out-

put.

(2) Frequency characteristics can be changed by ad-

justing the capacitor attached to pin 3 (20 pin) or pin 5 (18

pin).

(3) Gain can be changed by attaching a resistor to pin

4 (19 pin).

(4) Attach a transistor to pin 7 (16 pin) to mute popping

sounds. Recommended transistor: 2SD1781K

FElectrical characteristic curve

BH3562F

(5) The reset block idling power supply for pin 15

should be left on as it prevents popping sounds.

(6) To prevent popping sounds due to sudden fluctua-

tion in the power supply voltage, attach a ripple filter.

(7) To prevent popping sounds due to sudden changes

in the mute pin voltage, connect pin 8 to 1µF (approx.) ca-

pacitor.

(8) Attach a by-pass capacitor (approx. 0.1µF) at the

base of the IC between the power supply.

FExternal dimensions (Units: mm)

132

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