TEA1111AT/C1 데이터 시트보기 (PDF) - Philips Electronics

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TEA1111AT/C1

Speech circuit with dialler interface,regulated supply and earpiece volume control

Philips Electronics 

Philips Semiconductors

Speech circuit with dialler interface, regulated

supply and earpiece volume control

Product specification

TEA1111A

handbookI,lfiunlel pagewidth

24 Ω

BC858

100

µF

Iline

600 Ω

VIR

220

nF

2.4 kΩ

LEDC

IR

MIC−

MIC+

DTMF

SLPE

RCC

619 Ω

3 mA

CVCC

100 µF

CVDD

ILN

ICC

IDD

220 µF

LN

VCC

VDD

QR

TEA1111A

GAR

VO

10 µF RL

RGARext CGAR

CGARS

REG

AGC VEE MUTE VCI

VDTMF

RSLPE

20 Ω

CREG

4.7 µF

S1

EVCI

Voltage gain defined as Gv = 20 log

Earpiece gain: S1 = open.

V--V---O-I-

; VI = VIR or VDTMF.

Confidence tone: S1 = closed.

Inputs not being tested should be open circuit.

Fig.15 Test circuit for defining earpiece gains.

FCA061

1999 Nov 22

18

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