tea1069n NXP Semiconductors, tea1069n Datasheet - Page 7

• Manufacturer Part Number: tea1069n
• Description: Versatile Speech/dialler/ringer With Music-on-hold
• Manufacturer: NXP Semiconductors

Philips Semiconductors
FUNCTIONAL DESCRIPTION
Speech part
For numbering of components refer to Figs 28 and 29.
S
Power for the IC and its peripheral circuits is usually
obtained from the telephone line (see Fig.4).
The circuit creates a stabilized voltage (V
between LN and SLPE. This reference voltage is
temperature compensated and can be adjusted by means
of an external resistor R
connecting an R
or decreased by connecting an R
between REG and LN. This internal voltage reference is
decoupled by capacitor C3 between REG and V
1998 Jan 08
handbook, full pagewidth
UPPLIES
Versatile speech/dialler/ringer with
music-on-hold
V
CC
, LN, SLPE, REG
VA
resistor (R60) between REG and SLPE
KT/EARTH
VA
RESET
CE/FDI
XTAL1
XTAL2
DTMF
COL6
COL5
COL4
. It can be increased by
V EE
CSI
10
11
AND
1
2
3
4
5
6
7
8
9
VA
STAB
resistor (R61)
Fig.3 Pin configuration (SOT307-2).
ref
= 3.7 V)
EE
.
TEA1069AH
TEA1069H
7
This decoupling capacitor realises the set impedance
conversion from its DC value to its AC value in the audio
frequency range.
The internal transmission part of the circuitry (including the
earpiece amplifier) is supplied from V
supply is derived from the LN voltage via a dropping
resistor (R1) and must be decoupled by a capacitor (C1)
between V
to supply the dialler/ringer (V
electret microphone.
The DC current flowing into the set is determined by the
exchange supply voltage V
resistance R
line R
greater than the sum of the IC supply current (I
current drawn by the peripheral circuitry connected to V
(I
p
), the excess current is shunted to SLPE via LN.
line
. When the line current (I
CC
exch
and V
and the DC resistance of the telephone
EE
. This supply point may also be used
MBH784
TEA1069; TEA1069A
33
32
31
30
29
28
27
26
25
24
23
exch
REG
V CC
MUTE
DIODE
ROW5
ROW4
ROW3
ROW2
ROW1
HF
V EE
DD
) part or external circuit e.g.
, the feeding bridge
line
) is more than 0.5 mA
Product specification
CC
. This voltage
CC
) and the
CC