TDA8541T/N1 NXP Semiconductors, TDA8541T/N1 Datasheet - Page 3

• Manufacturer Part Number: TDA8541T/N1
• Description: AMP, AUDIO, PWR, 1.2W, MONO, 8SOIC
• Manufacturer: NXP Semiconductors

Specifications of TDA8541T/N1

• Amplifier Class: AB
• No. Of Channels: 1
• Output Power: 1.2W
• Supply Voltage Range: 2.2V To 18V
• Thd + N: 0.15% @ 0.5W, 8ohm, VCC=5V
• Load Impedance: 8ohm
• Operating Temperature Range: -40°C To +85°C
• Rohs Compliant: Yes

Philips Semiconductors
BLOCK DIAGRAM
FUNCTIONAL DESCRIPTION
The TDA8541(T) is a BTL audio power amplifier capable
of delivering 1 W output power to an 8
THD = 10% using a 5 V power supply. Using the MODE
pin the device can be switched to standby and mute
condition. The device is protected by an internal thermal
shutdown protection mechanism. The gain can be set
within a range from 6 dB to 30 dB by external feedback
resistors.
Power amplifier
The power amplifier is a Bridge Tied Load (BTL) amplifier
with a complementary PNP-NPN output stage.
The voltage loss on the positive supply line is the
saturation voltage of a PNP power transistor, on the
negative side the saturation voltage of an NPN power
transistor. The total voltage loss is <1 V and with a 5 V
supply voltage and an 8
1 W can be delivered.
1998 Apr 01
handbook, halfpage
1 W BTL audio amplifier
MODE
V CC
SVR
IN
IN
4
3
6
2
1
20 k
20 k
Fig.1 Block diagram.
STANDBY/MUTE LOGIC
loudspeaker an output power of
R
TDA8541
R
load at
GND
7
5
8
MGB972
OUT
OUT
3
PINNING
Mode select pin
The device is in standby mode (with a very low current
consumption) if the voltage at the MODE pin is
>(V
level of less than 0.5 V the amplifier is fully operational.
In the range between 1.5 V and V
is in mute condition. The mute condition is useful to
suppress plop noise at the output, caused by charging of
the input capacitor.
handbook, halfpage
MODE
SVR
IN+
IN
OUT
V
GND
OUT+
CC
SYMBOL
CC
0.5 V), or if this pin is floating. At a MODE voltage
MODE
SVR
IN
IN
Fig.2 Pin configuration.
PIN
1
2
3
4
5
6
7
8
1
2
3
4
TDA8541
operating mode select
(standby, mute, operating)
half supply voltage, decoupling
ripple rejection
positive input
negative input
negative loudspeaker terminal
supply voltage
ground
positive loudspeaker terminal
MGB971
DESCRIPTION
CC
7
6
5
8
Product specification
1.5 V the amplifier
OUT
V CC
OUT
GND
TDA8541