UBA2050 Ver la hoja de datos (PDF) - Philips Electronics

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UBA2050

One-chip telephone ICs with speech, dialler and ringer functions

Philips Electronics 

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KT

DP/FL DMO

LED

VDD DTMF

IR

LN

DIALLER

PART

FLASH

PULSE

DTMF

INDICATION

R1

R2

R3

R4

KEYBOARD

KEYTONE

C1

DETECTOR

MUTE

C2

C3

dB

C4

TONE

MDY

DTMF/

GENERATOR

RINGER

VDD

REGULATOR

VCC

SLPE

XTAL

CE/CSI

CE/FDI

TIMING/

CONTROL

RINGER

PART

DETECTOR/

GENERATOR

UBA205xx

UBA2050 and UBA2050A: C4 output not available.

UBA2051 and UBA2051A: KT output not available.

UBA2050 and UBA2051: DMO output available, LED output not available.

UBA2050A and UBA2051A: LED output available, DMO output not available.

UBA2051C: KT output available, DMO and LED outputs not available.

MDY/TONE

MIC+ MIC−

SPEECH/TRANSMISSION

PART

EARPIECE

AMPLIFIER

GAR

QR

RECEIVE

AMPLIFIER

AGC

TRANSMIT

AMPLIFIER

SUPPLY

RX

AGC

REG

VCC

GND

FCA138

SLPE

Fig.1 Block diagram.

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