MB86434 Просмотр технического описания (PDF) - Fujitsu

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производитель

MB86434

5V Single Power Supply Audio Interface Unit (AIU)

Fujitsu 

MB86434

Parameter

Unity gain frequency

Input conversion noise (BW = 300 - 3400 Hz)

Maximum output level

Minimum load level

Characteristics (typ)

1 MHz

3.1 mV

1.25 - 3.75 VOP

50 kΩ

(2) Analog Switches

The analog switches include on-chip general-purpose switches with 1 kΩ in-resistance. Switches are controlled by

writing to register address 0111 data bit D0, using H-level to make connections.

• Sidetone addition using analog switches

–

+

SGC

SW10

–

+

SGC

–

(inside IC)

+

SGC

BBO

BTPI

BTPO

SWI

SWO

PTBO

IM1

OP1

IM2

OP2

• SW10 = on

Address

A3 A2 A1 A0

011 1

Data bit

D4 D3 D2 D1 D0

———— 1

18

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