Os motores de busca de Datasheet de Componentes eletrônicos
  Portuguese  ▼
ALLDATASHEETPT.COM

X  

TEA1110AG-S14-R Folha de dados(PDF) 8 Page - Unisonic Technologies

Nome de Peças TEA1110AG-S14-R
Descrição Electrónicos  LOW VOLTAGE VERSATILE TELEPHONE TRANSMISSION CIRCUIT WITH DIALLER INTERFACE
Download  9 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
Fabricante Electrônico  UTC [Unisonic Technologies]
Página de início  http://www.utc-ic.com
Logo UTC - Unisonic Technologies

TEA1110AG-S14-R Folha de dados(HTML) 8 Page - Unisonic Technologies

  TEA1110AG-S14-R Datasheet HTML 1Page - Unisonic Technologies TEA1110AG-S14-R Datasheet HTML 2Page - Unisonic Technologies TEA1110AG-S14-R Datasheet HTML 3Page - Unisonic Technologies TEA1110AG-S14-R Datasheet HTML 4Page - Unisonic Technologies TEA1110AG-S14-R Datasheet HTML 5Page - Unisonic Technologies TEA1110AG-S14-R Datasheet HTML 6Page - Unisonic Technologies TEA1110AG-S14-R Datasheet HTML 7Page - Unisonic Technologies TEA1110AG-S14-R Datasheet HTML 8Page - Unisonic Technologies TEA1110AG-S14-R Datasheet HTML 9Page - Unisonic Technologies  
Zoom Inzoom in Zoom Outzoom out
 8 / 9 page
background image
TEA1110A
LINEAR INTEGRATED CIRCUIT
UNISONICTECHNOLOGIESCO.,LTD
8 of 9
www.unisonic.com.tw
QW-R108-014.C
FUNCTIONAL DESCRIPTION(Cont.)
Set impedance
The dynamic impedance is mainly determined by the RCC resistor within the audio frequency range. The
equivalent impedance of the circuit is shown in Fig.5.
Rcc
619Ω
Vcc
Cvcc
100μF
+
+
Rp
REG
CREG
RSLPE
LEQ
Vref
SLPE
LN
VEE
LEQ=CREG × RSLPE × Rp
Rp=internal resistance
Rp=15.5kΩ
Fig.5 Equivalent impedance between LN and VEE
20Ω
4.7μF
Microphone amplifier (pins MIC+ and MIC-)
The UTC TEA1110A has symmetrical microphone inputs. The input impedance between pin MIC+ and pin MIC-
is 64kΩ (2 × 32kΩ). On this microphone amplifier, automatic gain control is used for line loss compensation.
Receiving amplifier (pins IR, GAR and QR)
The receiving amplifier has one input (IR) and one output (QR). The input impedance between pin IR and pin
VEE is 20kΩ. Connecting an external resistor RGAR between pins GAR and QR can decrease the voltage gain within
14dB from pin IR to pin QR. The two external capacitors CGAR (connected between pins GAR and QR) and CGARS
(connected between GAR and VEE) ensure stability, the CGAR capacitor provides a first-order low-pass filter. The
cut-off frequency corresponds to the time constant CGAR × (RGARint // RGAR). And the RGARint is the internal resistor
connected between pins GAR and QR which sets a 125 kW typ gain. The condition CGARS = 10 ×CGAR is required to
ensure stability.
The output voltage of the receiving amplifier is for continuous wave drive specially. The maximum output swing
depends on the DC line voltage, the RCC resistor, the ICC current consumption of the circuit, the IP current
consumption of the peripheral circuits and the load impedance.
On this receiving amplifier automatic gain control is used for line loss compensation.
Automatic gain control (pin AGC)
The UTC TEA1110A performs automatic line loss compensation. The automatic gain control varies both the
gain of the microphone amplifier and receiving amplifier in accordance with the DC line current within 5.9 dB (which
corresponds approximately to a line length of 5 km for a 0.5 mm diameter twisted-pair copper cable with a DC
resistance of 176Ω/km and an average attenuation of 1.2dB/km).
The IC can be used with different configurations of feeding bridge (supply voltage and bridge resistance) by the
means of connecting an external resistor RAGC between pins AGC and VEE. The line currents ISTART and ISTOP can
be increased by this resistor (the ratio between ISTART and ISTOP is not affected by the resistor). When pin AGC is in
the open-circuit condition, the AGC function is inactive.
Mute function (pin MUTE MUTE)
The mute function performs the switching between the speech mode and the dialling mode. When the MUTE
is in a low level, the DTMF input is active and the microphone and receiving amplifiers inputs are inactive. When the
MUTE is in a high level, the microphone and receiving amplifiers inputs are active while the DTMF input is inactive.
The input includes a pull-up resistor.
DTMF amplifier (pin DTMF)
When the DTMF amplifier is inactive, dialling tones that can be heard in the earpiece at a low level may be sent
on line. The UTC TEA1110A has an asymmetrical DTMF input. The input impedance between DTMF and VEE is
20kΩ. The automatic gain control has no effect on the DTMF amplifier.


Nº de peça semelhante - TEA1110AG-S14-R

Fabricante ElectrônicoNome de PeçasFolha de dadosDescrição Electrónicos
logo
Unisonic Technologies
TEA1110AG-S14-R UTC-TEA1110AG-S14-R Datasheet
275Kb / 9P
   LOW VOLTAGE VERSATILE TELEPHONE TRANSMISSION CIRCUIT
More results

Descrição semelhante - TEA1110AG-S14-R

Fabricante ElectrônicoNome de PeçasFolha de dadosDescrição Electrónicos
logo
NXP Semiconductors
TEA1113 PHILIPS-TEA1113 Datasheet
181Kb / 20P
   Low voltage versatile telephone transmission circuit with dialler interface
1997 Mar 27
TEA1110A PHILIPS-TEA1110A Datasheet
187Kb / 20P
   Low voltage versatile telephone transmission circuit with dialler interface
1997 Apr 22
TEA1066T PHILIPS-TEA1066T Datasheet
133Kb / 24P
   Versatile telephone transmission circuit with dialler interface
1996 Apr 04
TEA1067 PHILIPS-TEA1067 Datasheet
175Kb / 28P
   Low voltage versatile telephone transmission circuit with dialler interface
June 1990
logo
List of Unclassifed Man...
ILA1068 ETC-ILA1068 Datasheet
352Kb / 11P
   Versatile Telephone Transmission Circuit with Dialler Interface
logo
NXP Semiconductors
TEA1068 PHILIPS-TEA1068 Datasheet
168Kb / 24P
   Versatile telephone transmission circuit with dialler interface
1996 Apr 23
TEA1065 PHILIPS-TEA1065 Datasheet
154Kb / 28P
   Versatile telephone transmission circuit with dialler interface
March 1994
TEA1112 PHILIPS-TEA1112 Datasheet
154Kb / 20P
   Low voltage versatile telephone transmission circuits with dialler interface
1997 Mar 26
logo
List of Unclassifed Man...
TEA1060 ETC-TEA1060 Datasheet
757Kb / 16P
   VERSATILE TELEPHONE TRANSMISSION CIRCUITS WITH DIALLER INTERFACE
logo
Unisonic Technologies
UTCTEA1062N UTC-UTCTEA1062N Datasheet
177Kb / 13P
   LOW VOLTAGE TELEPHONE TRANSMISSION CIRCUIT WITH DIALLER INTERFACE
More results


Html Pages

1 2 3 4 5 6 7 8 9


Folha de dados Download

Go To PDF Page


Ligação URL




Privacy Policy
ALLDATASHEETPT.COM
ALLDATASHEET é útil para você?  [ DONATE ] 

Sobre Alldatasheet   |   Publicidade   |   Contato conosco   |   Privacy Policy   |   roca de Link   |   Lista de Fabricantes
All Rights Reserved©Alldatasheet.com


Mirror Sites
English : Alldatasheet.com  |   English : Alldatasheet.net  |   Chinese : Alldatasheetcn.com  |   German : Alldatasheetde.com  |   Japanese : Alldatasheet.jp
Russian : Alldatasheetru.com  |   Korean : Alldatasheet.co.kr  |   Spanish : Alldatasheet.es  |   French : Alldatasheet.fr  |   Italian : Alldatasheetit.com
Portuguese : Alldatasheetpt.com  |   Polish : Alldatasheet.pl  |   Vietnamese : Alldatasheet.vn
Indian : Alldatasheet.in  |   Mexican : Alldatasheet.com.mx  |   British : Alldatasheet.co.uk  |   New Zealand : Alldatasheet.co.nz
Family Site : ic2ic.com  |   icmetro.com