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TEA1064A の電気的特性と機能

TEA1064AのメーカーはNXP Semiconductorsです、この部品の機能は「Low voltage versatile telephone transmission circuit with dialler interface and transmit level dynamic limiting」です。


製品の詳細 ( Datasheet PDF )

部品番号 TEA1064A
部品説明 Low voltage versatile telephone transmission circuit with dialler interface and transmit level dynamic limiting
メーカ NXP Semiconductors
ロゴ NXP Semiconductors ロゴ 




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TEA1064A Datasheet, TEA1064A PDF,ピン配置, 機能
INTEGRATED CIRCUITS
DATA SHEET
TEA1064A
Low voltage versatile telephone
transmission circuit with dialler
interface and transmit level
dynamic limiting
Product specification
File under Integrated Circuits, IC03A
March 1994

1 Page





TEA1064A pdf, ピン配列
Philips Semiconductors
Low voltage versatile telephone transmission circuit
with dialler interface and transmit level dynamic limiting
Product specification
TEA1064A
handbook, full pagewidth
13
IR
VCC1
16
TEA1064A
MIC+
MIC
9
8
12
DTMF
14
MUTE
15
PD
dB
SUPPLY AND
REFERENCE
+
+
AGC
CIRCUIT
11
VEE
CURRENT
REFERENCE
17 18
10
REG AGC
STAB
−+
+−
+
LN
1
6
GAR
5
QR+
4
QR
19
VCC2
2
GAS1
3
GAS2
LOW
VOLTAGE
CIRCUIT
START
CIRCUIT
DYNAMIC
LIMITER
7
20
DLS/MMUTE SLPE MGR056
Fig.1 Block diagram.
March 1994
3


3Pages


TEA1064A 電子部品, 半導体
Philips Semiconductors
Low voltage versatile telephone transmission circuit
with dialler interface and transmit level dynamic limiting
Product specification
TEA1064A
FUNCTIONAL DESCRIPTION
Supplies VCC1, VCC2, LN, SLPE, REG and STAB (Fig.3)
Power for the TEA1064A and its peripheral circuits is
usually obtained from the telephone line. The IC develops
its own supply voltage at VCC1 and regulates its voltage
drop. The internal supply requires a decoupling capacitor
between VCC1 and VEE. The internal current stabilizer is
set by a 3.6 kresistor between STAB and VEE.
The DC current flowing into the set is determined by the
exchange supply voltage Vexch, the feeding bridge
resistance Rexch, the subscriber line DC resistance Rline
and the DC voltage (including polarity guard) on the
subscriber set (see Fig.3).
The internal voltage regulator generates a
temperature-compensated reference voltage that is
available between VCC2 and SLPE
[Vref = VCC2-SLPE = 3.3 V (typ.)]. This internal voltage
regulator requires decoupling by a capacitor between REG
and VEE (C3).
The reference voltage can be used to:
regulate directly the line voltage (stabilized
VLN-SLPE = VCC2-SLPE)(1)
to stabilize the supply voltage for peripherals.
Regulated line voltage
In this application the VCC2 pin is connected to the LN pin
as shown in Fig.3. This configuration gives a stabilized
voltage across pins LN and SLPE which, applied via the
low-pass filter R16, C15, provides a supply to the
peripherals that is independent of the line current and
depends only on the peripheral supply current.
The value of R16 and the level of the DC voltage VLN-SLPE
determine the supply capabilities. In the basic application
R16 = 392 and C15 = 220 µF. The worst-case
peripheral supply current as a function of supply voltage is
shown in Fig.4. To increase the supply capabilities, the DC
voltage VLN-SLPE can be increased by using RVA(REG-SLPE)
or by decreasing the value of R16.
(1) The TEA1064A application with regulated line voltage is the
same as is used for TEA1060/TEA1061, TEA1067 and
TEA1068 integrated circuits.
handbook, full pagewidth
Rexch
Vexch
Rline
Iline
Ip + 0.25 mA
R1
TEA1064A
ISLPE
ICC1
LN VCC1
1 16
19
VCC2
DC
AC
17 10
REG STAB
C3 R5
20
SLPE
R9
0.25 mA
11
VEE
C1 R16
Ip
C15
peripheral
circuits
Vp
The voltage VLN-SLPE is fixed to Vref = 3.3 ± 0.25 V. Resistor R16 together with the
line current determine the supply capabilities and the maximum output swing on
the line (no loop damping is necessary).
The line voltage VLN = Vref + ([Iline 1.55 mA] × R9).
MGR058
Fig.3 Application with regulated line voltage (stabilized VLN-SLPE).
March 1994
6

6 Page



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TEA1064A

Low voltage versatile telephone transmission circuit with dialler interface and transmit level dynamic limiting

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Low voltage versatile telephone transmission circuit with dialler interface and transmit level dynamic limiting

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Low voltage versatile telephone transmission circuit with dialler interface and transmit level dynamic limiting

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Low voltage versatile telephone transmission circuit with dialler interface and transmit level dynamic limiting

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