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PDF ( 数据手册 , 数据表 ) TEA1069N

零件编号 TEA1069N
描述 Versatile speech/dialler/ringer with music-on-hold
制造商 NXP Semiconductors
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TEA1069N 数据手册, 描述, 功能
INTEGRATED CIRCUITS
DATA SHEET
TEA1069; TEA1069A
Versatile speech/dialler/ringer with
music-on-hold
Product specification
Supersedes data of 1996 Dec 10
File under Integrated Circuits, IC03
1998 Jan 08







TEA1069N pdf, 数据表
Philips Semiconductors
Versatile speech/dialler/ringer with
music-on-hold
Product specification
TEA1069; TEA1069A
handbook, full pagewidth
Rexch
Vexch
Rline
Iline
R1
ISLPE + 0.5 mA
ICC
TEA1069
TEA1069A
LN VCC
DC 0.5 mA
AC
REG
STAB
SLPE
ISLPE
C3 R5
R9
VEE
C1
Ip
peripheral
circuits
MBH197
Fig.4 Supply arrangement.
Thus, the regulated voltage on the line terminal (VLN) can
be calculated as:
VLN = Vref + ISLPE × R9 , where
ISLPE
=
Iline
ICC
+
Ip
+
0.5
×
103 A 
Vref is the internally generated temperature compensated
reference voltage of 3.7 V and R9 is an external resistor
connected between SLPE and VEE.
The circuit has an internal current stabilizer operating at a
level determined by resistor R5 connected between STAB
and VEE.
In normal use the value of R5 would be 3.6 kand the
value of R9 would be 20 .
Changing the value of R5 or R9 will affect microphone
gain, DTMF gain, gain control characteristics, sidetone
level, maximum output swing on LN and the DC
characteristics (especially at low line current).
At line currents below 9 mA the internal reference voltage
is automatically adjusted to a lower value (typically 1.6 V
at 1 mA). This means that more sets can be operated in
parallel with DC line voltages (excluding the polarity guard)
down to an absolute minimum voltage of 1.6 V. At line
currents below 9 mA the circuit has limited sending and
receiving levels.
Under normal conditions, when ISLPE >> ICC + 0.5 mA + Ip,
the static behaviour of the circuit is that of a 3.7 V regulator
diode (Vref) with an internal resistance equal to that of R9.
In the audio frequency range the dynamic impedance is
largely determined by R1. Figure 5 shows the equivalent
impedance of the circuit.
Current (Ip) available from VCC for the dialler part and
peripheral circuits depends on the external components
used. Figure 6 shows this current for VCC > 2.2 V. When
MUTE is HIGH i.e. when the receiving amplifier (supplied
from VCC) is driven, the available current is further
reduced. Current availability can be increased by
connecting the supply IC TEA1081 in parallel with R1, or
by increasing the DC line voltage by means of an external
resistor (RVA = R60) connected between REG and SLPE.
1998 Jan 08
8







TEA1069N equivalent, schematic
Philips Semiconductors
Versatile speech/dialler/ringer with
music-on-hold
Product specification
TEA1069; TEA1069A
handbook, full pagewidth KEYS
MUTE
DP/FL
MOH/DMO
[3]
tb
[recall]
[4]
tm
tidp trc
tm + tholdover
tinterflash
tholdover
MBH201
tb = break time.
tm = make time.
tidp = interdigit pause time.
trc = recall time.
tholdover = hold-over time.
tinterflash = interflash hold-over time (only for TEA1069A).
Fig.13 Timing diagram in pulse dialling mode.
TONE DIALLER: PINS TONE AND MUTE
In this system digits are transmitted as two tones
simultaneously, the so called Dual-Tone Multi-Frequency
(DTMF) system. Tone digits are separated by a pause
time. Valid keys are the digits [0] to [9], [], [#] and
[PAUSE].
The DTMF dialling mode, the tone burst/pause times and
the access pause time depend on the diode options: PTS,
TBT, APT and APT2.
The MUTE pin is an open drain output which requires a
pull-up resistor. MUTE is HIGH when VDD is below
power-on reset trip level and when RESET is HIGH.
Figure 14 shows the timing diagram in tone dialling mode
when successively keys [3], [3], [RECALL] and [4] are
dialled.
1998 Jan 08
16










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