TDA8579T/N1,112 NXP Semiconductors, TDA8579T/N1,112 Datasheet - Page 3

• Manufacturer Part Number: TDA8579T/N1,112
• Description: IC DUAL DIFF LINE RCVR 8-SOIC
• Manufacturer: NXP Semiconductors
• Type: Receiverr

Specifications of TDA8579T/N1,112

• Number Of Drivers/receivers: 0/2
• Voltage - Supply: 5 V ~ 18 V
• Mounting Type: Surface Mount
• Package / Case: 8-SOIC (3.9mm Width)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Protocol: -
• Other names: 568-3592-5; 935075970112; TDA8579TD

Philips Semiconductors
BLOCK DIAGRAM
PINNING
1995 Dec 15
INL+
IN
INR+
SVRR
GND
OUTR
OUTL
V
SYMBOL
CC
Dual common-mode rejection
differential line receiver
INR
INL
IN
PIN
1
2
3
4
5
6
7
8
Fig.1 Block diagram.
1
2
3
positive input left
common negative input
positive input right
half supply voltage
ground
output right
output left
supply voltage
TDA8579
GND
V CC
8
5
DESCRIPTION
V CC
MBD230
7
4
6
OUTL
SVRR
OUTR
3
FUNCTIONAL DESCRIPTION
The TDA8579 contains two identical differential amplifiers
with a voltage gain of 0 dB. The device is intended to
receive line input signals for audio applications. The
TDA8579 has a very high level of common-mode rejection
and thus eliminates ground noise. The common-mode
rejection remains constant up to high frequencies (the
amplifier gain is fixed at 0 dB). The inputs have a high input
impedance. The output stage is a class AB stage with a
low output impedance. For a large common-mode
rejection, also at low frequencies, an electrolytic capacitor
connected to the negative input is advised. Because the
input impedance is relatively high, this results in a large
settling time of the DC input voltage. Therefore a
quick-charge circuit is included to charge the input
capacitor within 0.2 seconds.
All input and output pins are protected against high
electrostatic discharge conditions (4000 V, 150 pF, 150 ).
SVRR
INR
INL
IN
Fig.2 Pin configuration.
1
2
3
4
TDA8579
MBD231
7
6
5
8
Product specification
V CC
OUTL
OUTR
GND
TDA8579