|
|
PDF TDA8575 Data sheet ( Hoja de datos )
| Número de pieza | TDA8575 | |
| Descripción | Ground noise isolation amplifier | |
| Fabricantes | NXP Semiconductors | |
| Logotipo |  |
|
Hay una vista previa y un enlace de descarga de TDA8575 (archivo pdf) en la parte inferior de esta página. Total 16 Páginas | ||
|
No Preview Available !
INTEGRATED CIRCUITS
DATA SHEET
TDA8575
Ground noise isolation amplifier
Preliminary specification
File under Integrated Circuits, IC01
1996 Jul 29
1 page  
Philips Semiconductors
Ground noise isolation amplifier
Preliminary specification
TDA8575
FUNCTIONAL DESCRIPTION
System description
To enable a high common mode rejection a new system
setup is used. The voltage to current converter, referred to
as V → I in the block diagram of Fig.1, replaces the
resistors that can be seen in the conventional system
solution.
Both systems are shown in Figs 4 and 5. In the
conventional system the common mode rejection is limited
by the matching properties of the resistors resulting in a
CMRR of 60 dB maximum. Using the new system setup a
CMRR of 80 dB is achieved.
This is inconvenient for most applications and therefore
the TDA8575(T) is equipped with a quick charge circuit.
On power-on the quick charge circuit charges the
capacitor C2 connected to the IN- pins. The quick charge
circuit consists of a voltage buffer and a control circuit
(referred to as ‘reference and power check’ in Fig.6) that
monitors the supply voltage VCC. If the supply voltage rises
more than ≈ 2 V the voltage buffer is switched on.
After charging C2 the voltage buffer is switched off.
The charge time of C2 will equal the charge time of C4, the
SVRR capacitor.
Power on
In Fig.6 the preferred input capacitor values are shown.
If the capacitor C2 = 22 µF connected to the IN- inputs had
to be charged by the 0.5Vcc voltage source a charge time
of 5τ = 5 × -3---6---0--2---k----Ω--- × 22 µF = 20s would be required.
handbook, halfpage
Vi
Vo
0.5 VCC
MGE830
handbook, halfpage
Vi V I
Vo
IV
0.5 VCC
MGE831
Fig.4 Conventional system.
Fig.5 New system using V → I converters.
1996 Jul 29
5
5 Page 
Philips Semiconductors
Ground noise isolation amplifier
Preliminary specification
TDA8575
handbook, full pagewidth
Vi(L)
C1
INL+ 1
220 nF
Rs
5 kΩ
INL−
108
kΩ
5
VI
360 kΩ
C2
Vcm1
10 µF
TDA8575(T)
Vcm2
C2
Vi(R)
10 µF
Rs
5 kΩ
C1
INR− 6
360 kΩ
108
kΩ
INR+ 7
VI
220 nF
12 OUTL
C3
2.2 µF
RL
I V 10 kΩ
VCC 16 VCC
VCC = 8.5 V
REFERENCE
8 SVRR
9 GND
C4
47 µF
C5
100 nF
IV
C3
11 OUTR
2.2 µF
RL
10 kΩ
MGE836
1996 Jul 29
Fig.10 Application circuit TDA8575(T) with a balanced signal source.
11
11 Page | ||
| Páginas | Total 16 Páginas | |
| PDF Descargar | [ Datasheet TDA8575.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| TDA8571J | 4 x 40 W BTL quad car radio power amplifier | NXP Semiconductors |
| TDA8574 | Class-H high-output voltage level line driver | NXP Semiconductors |
| TDA8575 | Ground noise isolation amplifier | NXP Semiconductors |
| TDA8576T | Class-H high-output voltage level line driver | NXP Semiconductors |
| Número de pieza | Descripción | Fabricantes |
| SLA6805M | High Voltage 3 phase Motor Driver IC. |
 Sanken |
| SDC1742 | 12- and 14-Bit Hybrid Synchro / Resolver-to-Digital Converters. |
 Analog Devices |
|
DataSheet.es es una pagina web que funciona como un repositorio de manuales o hoja de datos de muchos de los productos más populares, |
| DataSheet.es | 2020 | Privacy Policy | Contacto | Buscar |