Motore di ricerca datesheet componenti elettronici
  Italian  ▼
ALLDATASHEETIT.COM

X  

TS34118 Scheda tecnica(PDF) 11 Page - Taiwan Semiconductor Company, Ltd

Il numero della parte TS34118
Spiegazioni elettronici  Voice Switched Speakerphone Circuit Chip disable for active/standby operation
Download  21 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
Produttore elettronici  TSC [Taiwan Semiconductor Company, Ltd]
Homepage  http://www.taiwansemi.com
Logo TSC - Taiwan Semiconductor Company, Ltd

TS34118 Scheda tecnica(HTML) 11 Page - Taiwan Semiconductor Company, Ltd

Back Button TS34118_13 Datasheet HTML 7Page - Taiwan Semiconductor Company, Ltd TS34118_13 Datasheet HTML 8Page - Taiwan Semiconductor Company, Ltd TS34118_13 Datasheet HTML 9Page - Taiwan Semiconductor Company, Ltd TS34118_13 Datasheet HTML 10Page - Taiwan Semiconductor Company, Ltd TS34118_13 Datasheet HTML 11Page - Taiwan Semiconductor Company, Ltd TS34118_13 Datasheet HTML 12Page - Taiwan Semiconductor Company, Ltd TS34118_13 Datasheet HTML 13Page - Taiwan Semiconductor Company, Ltd TS34118_13 Datasheet HTML 14Page - Taiwan Semiconductor Company, Ltd TS34118_13 Datasheet HTML 15Page - Taiwan Semiconductor Company, Ltd Next Button
Zoom Inzoom in Zoom Outzoom out
 11 / 21 page
background image
TS34118
Voice Switched Speakerphone Circuit
11/21
Version: A13
Attenuator Control Block - Continue
4) The circuit will switch to the slow idle mode when a) both talkers are quiet (no speech present), or b) when one
talker’s speech level is continuously overridden by noise at the other speaker’s location.
The time required to switch the circuit between transmit, receive, fast idle and slow idle is determined in part by
the components at the CT pin (pin 14). (see the section on Switch Time for a more complete explanation of the
switching time components). A schematic of the CT circuitry is shown in Figure 6, and operates as follows:
- RT is typically 120KΩ, and CT is typically 5.0µF.
- To switch to the receive mode, I1 is turned on (I2 is off), charging the external capacitor to +240mV above VB.
(An internal clamp prevents further charging of the capacitor.)
- To switch to the transmit mode, I2 is turned on (I1 is off) bringing down the voltage on the capacitor to –240mV
with respect to VB.
- To switch to idle quickly (fast idle), the current sources are turned off, and the internal 2.0KΩ resistor is
switched in, discharging the capacitor to VB with a time constant = 2.0K×CT.
- To switch to idle slowly (slowly idle), the current sources are turned off, the switch at the internal 2.0KΩ resistor
is open, and the capacitor discharges to VB through the external resistor RT with a time constant = RT × CT.
Figure 6. CT Attenuator Control block Circuit
Microphone Amplifier
The microphone amplifier (pins 10,11) has the non-inverting input internally connected to VB, while the inverting
input and the output are pinned out. Unlike most op-amps, the amplifier has an all-NPN output stage, which
maximizes phase margin and gain-bandwidth. This feature ensures stability at gains less than unity, as well as with
a wide range of reactive loads. The open loop gain is typically 80dB (f<100Hz), and the gain-bandwidth is typically
1.0MHz (see Figure 16). The maximum p-p output swing is typically 1.0 volt less than Vcc with an output
impedance of <10
Ω until current limited is reached (typically 1.5mA).Input bias current at MCI is typically 40nA out
of the pin.
The muting function (Pin 12), when activated, will reduce the gain of the amplifier to ≈-39dB (with RMI=5.0KΩ) by
shorting output to the inverting input (see Figure 7). The mute input has a threshold of ≈1.5 volts, and the voltage at
this pin must be kept within the range of ground and Vcc (see Figure 17). If the mute function is not used, the pin
should be grounded.


Codice articolo simile - TS34118_13

Produttore elettroniciIl numero della parteScheda tecnicaSpiegazioni elettronici
logo
Taiwan Semiconductor Co...
TS34118 TSC-TS34118_1 Datasheet
989Kb / 23P
   Voice Switched Speakerphone Circuit
More results

Descrizione simile - TS34118_13

Produttore elettroniciIl numero della parteScheda tecnicaSpiegazioni elettronici
logo
KODENSHI_AUK CORP.
KK34118 KODENSHI-KK34118 Datasheet
901Kb / 14P
   Voice Switched Speakerphone Circuit
logo
Taiwan Semiconductor Co...
TS34118 TSC-TS34118_1 Datasheet
989Kb / 23P
   Voice Switched Speakerphone Circuit
logo
System Logic Semiconduc...
SL34118 SLS-SL34118 Datasheet
136Kb / 12P
   Voice Switched Speakerphone Circuit
logo
SHANGHAI BELLING CO., L...
BL34118 BELLING-BL34118 Datasheet
554Kb / 11P
   Voice Switched Speakerphone Circuit
logo
Freescale Semiconductor...
MC34018DW FREESCALE-MC34018DW Datasheet
962Kb / 14P
   VOICE SWITCHED SPEAKERPHONE CIRCUIT
logo
Motorola, Inc
MC33318 MOTOROLA-MC33318 Datasheet
42Kb / 1P
   Voice switched Speakerphone circuit
logo
ARTSCHIP ELECTRONICS CO...
MC34118 ARTSCHIP-MC34118 Datasheet
94Kb / 2P
   VOICE SWITCHED SPEAKERPHONE CIRCUIT
logo
Estek Electronics Co. L...
ET-IL34118 ESTEK-ET-IL34118 Datasheet
1Mb / 12P
   Voice Switched Speakerphone Circuit
logo
Taiwan Semiconductor Co...
TS34118CS28 TSC-TS34118CS28 Datasheet
1Mb / 20P
   Voice Switched Speakerphone Circuit
logo
Integral Corp.
IL34118 INTEGRAL-IL34118 Datasheet
632Kb / 12P
   Voice Switched Speakerphone Circuit
More results


Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21


Scheda tecnica Scarica

Go To PDF Page


Link URL




Privacy Policy
ALLDATASHEETIT.COM
Lei ha avuto il aiuto da alldatasheet?  [ DONATE ] 

Di alldatasheet   |   Richest di pubblicita   |   contatti   |   Privacy Policy   |   scambio Link   |   Ricerca produttore
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