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TEA1062A の電気的特性と機能

TEA1062AのメーカーはNXP Semiconductorsです、この部品の機能は「Low voltage transmission circuits with dialler interface」です。


製品の詳細 ( Datasheet PDF )

部品番号 TEA1062A
部品説明 Low voltage transmission circuits with dialler interface
メーカ NXP Semiconductors
ロゴ NXP Semiconductors ロゴ 




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TEA1062A Datasheet, TEA1062A PDF,ピン配置, 機能
INTEGRATED CIRCUITS
DATA SHEET
TEA1062; TEA1062A
Low voltage transmission circuits
with dialler interface
Product specification
Supersedes data of 1996 Dec 04
File under Integrated Circuits, IC03
1997 Sep 03

1 Page





TEA1062A pdf, ピン配列
Philips Semiconductors
Low voltage transmission circuits with
dialler interface
Product specification
TEA1062; TEA1062A
ORDERING INFORMATION
TYPE NUMBER
TEA1062
TEA1062M1
TEA1062A
TEA1062AM1
TEA1062T
TEA1062AT
NAME
DIP16
DIP16
DIP16
DIP16
SO16
SO16
PACKAGE
DESCRIPTION
plastic dual in-line package; 16 leads (300 mil)
plastic dual in-line package; 16 leads (300 mil)
plastic dual in-line package; 16 leads (300 mil)
plastic dual in-line package; 16 leads (300 mil)
plastic small outline package; 16 leads; body width 3.9 mm
plastic small outline package; 16 leads; body width 3.9 mm
VERSION
SOT38-1
SOT38-4 or
SOT38-9
SOT38-1
SOT38-4 or
SOT38-9
SOT109-1
SOT109-1
BLOCK DIAGRAM
handbook, full pagewidth
IR 10
VCC
13
TEA1062A
LN
1
5
4
GAR
QR
7
MIC
6
MIC
DTMF 11
dB
(1)
MUTE
12
SUPPLY AND
REFERENCE
CONTROL
CURRENT
9
VEE
CURRENT
REFERENCE
14 15
8
REG AGC
STAB
LOW VOLTAGE
CIRCUIT
2
GAS1
3 GAS2
16
SLPE
MBA359 - 1
(1) Pin 12 is active HIGH (MUTE) for TEA1062.
Fig.1 Block diagram for TEA1062A.
1997 Sep 03
3


3Pages


TEA1062A 電子部品, 半導体
Philips Semiconductors
Low voltage transmission circuits with
dialler interface
Product specification
TEA1062; TEA1062A
Microphone inputs MIC+ and MICand gain pins
GAS1 and GAS2
The circuit has symmetrical microphone inputs. Its input
impedance is 64 k(2 × 32 k) and its voltage gain is
typically 52 dB (when R7 = 68 k, see Figures 14
and 15). Dynamic, magnetic, piezoelectric or electret (with
built-in FET source followers) can be used. Microphone
arrangements are illustrated in Fig.11.
The gain of the microphone amplifier can be adjusted
between 44 dB and 52 dB to suit the sensitivity of the
transducer in use. The gain is proportional to the value of
R7 which is connected between GAS1 and GAS2.
Stability is ensured by two external capacitors, C6
connected between GAS1 and SLPE and C8 connected
between GAS1 and VEE. The value of C6 is 100 pF but this
may be increased to obtain a first-order low-pass filter.
The value of C8 is 10 times the value of C6. The cut-off
frequency corresponds to the time constant R7 × C6.
Input MUTE (TEA1062)
When MUTE is HIGH the DTMF input is enabled and the
microphone and receiving amplifier inputs are inhibited.
The reverse is true when MUTE is LOW or open-circuit.
MUTE switching causes only negligible clicking on the line
and earpiece output. If the number of parallel sets in use
causes a drop in line current to below 6 mA the speech
amplifiers remain active independent to the DC level
applied to the MUTE input.
Input MUTE (TEA1062A)
When MUTE is LOW or open-circuit, the DTMF input is
enabled and the microphone and receiving amplifier inputs
are inhibited. The reverse is true when MUTE is HIGH.
MUTE switching causes only negligible clicking on the line
and earpiece output. If the number of parallel sets in use
causes a drop in line current to below 6 mA the DTMF
amplifier becomes active independent to the DC level
applied to the MUTE input.
Receiving amplifier IR, QR and GAR
The receiving amplifier has one input (IR) and a
non-inverting output (QR). Earpiece arrangements are
illustrated in Fig.12. The IR to QR gain is typically 31 dB
(when R4 = 100 k). It can be adjusted between
20 and 31 dB to match the sensitivity of the transducer in
use. The gain is set with the value of R4 which is
connected between GAR and QR. The overall receive
gain, between LN and QR, is calculated by subtracting the
anti-sidetone network attenuation (32 dB) from the
amplifier gain. Two external capacitors, C4 and C7, ensure
stability. C4 is normally 100 pF and C7 is 10 times the
value of C4. The value of C4 may be increased to obtain a
first-order low-pass filter. The cut-off frequency will depend
on the time constant R4 × C4.
The output voltage of the receiving amplifier is specified for
continuous-wave drive. The maximum output voltage will
be higher under speech conditions where the peak to RMS
ratio is higher.
Automatic Gain Control input AGC
Automatic line loss compensation is achieved by
connecting a resistor (R6) between AGC and VEE.
The automatic gain control varies the gain of the
microphone amplifier and the receiving amplifier in
accordance with the DC line current. The control range is
5.8 dB which corresponds to a line length of 5 km for a
0.5 mm diameter twisted-pair copper cable with a DC
resistance of 176 /km and average attenuation of
1.2 dB/km). Resistor R6 should be chosen in accordance
with the exchange supply voltage and its feeding bridge
resistance (see Fig.13 and Table 1). The ratio of start and
stop currents of the AGC curve is independent of the value
of R6. If no automatic line-loss compensation is required
the AGC pin may be left open-circuit. The amplifiers, in this
condition, will give their maximum specified gain.
Dual-tone multi-frequency input DTMF
When the DTMF input is enabled dialling tones may be
sent on to the line. The voltage gain from DTMF to LN is
typically 25.5 dB (when R7 = 68 k) and varies with R7 in
the same way as the microphone gain. The signalling
tones can be heard in the earpiece at a low level
(confidence tone).
1997 Sep 03
6

6 Page



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共有リンク

Link :


部品番号部品説明メーカ
TEA1062

Low voltage transmission circuits with dialler interface

NXP Semiconductors
NXP Semiconductors
TEA1062A

Low voltage transmission circuits with dialler interface

NXP Semiconductors
NXP Semiconductors
TEA1062AM1

Low voltage transmission circuits with dialler interface

NXP Semiconductors
NXP Semiconductors
TEA1062AN

LOW VOLTAGE TELEPHONE TRANSMISSION CIRCUIT WITH DIALLER INTERFACE

Unisonic Technologies
Unisonic Technologies


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