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

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componentes Descripción

Fabricante

UBA2050

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

Philips Electronics 

Philips Semiconductors

One-chip telephone ICs with speech,

dialler and ringer functions

Product specification

UBA2050(A); UBA2051(A;C)

handbook, full pagewidth Rline

Rexch

Iline

ILN

LN

ISUP

RCC

ICC

VCC

VDD

IDD

CVCC

100 µF

Vexch

SENSE

UBA205xx

SWITCH

VDD regulator

GND

peripherals

CVDD

220 µF

FCA131

Fig.10 VDD regulator configuration.

SET IMPEDANCE

In the audio frequency range, the dynamic impedance is

mainly determined by resistor RCC. The equivalent

impedance of the circuit is illustrated in Fig.11.

handbook, halfpagLeN

LEQ

SLPE

GND

Vref

RSLPE

20 Ω

RP

REG

RCC

619 Ω

VCC

CREG

4.7 µF

CVCC

100 µF

FCA132

2000 May 19

LEQ = CREG × RSLPE × Rp.

Internal resistance RP = 17.5 kΩ.

Fig.11 Equivalent impedance between

LN and GND.

11

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