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

handbook, full pageIwlinideth

Iline

VO

24 Ω 2.4 kΩ

RCC

619 Ω

3 mA

CVCC

100 µF

CVDD

ILN

ICC

IDD

220 µF

BC858

100

µF

VMIC

LEDC

IR

MIC−

MIC+

LN

VCC

VDD

QR

TEA1111A

GAR

10 µF RL

RGARext CGAR

CGARS

600 Ω

DTMF

SLPE

REG

AGC VEE MUTE VCI

VDTMF

RSLPE CREG

S1

20 Ω

4.7 µF

FCA060

Voltage gain defined as Gv = 20 log

Microphone gain: S1 = open.

V--V---O-I-

; VI = VMIC or VDTMF.

DTMF gain: S1 = closed.

Inputs not being tested should be open circuit.

Fig.14 Test circuit for defining transmit gains.

1999 Nov 22

17

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