TDA8944AJ/N2,112 NXP Semiconductors, TDA8944AJ/N2,112 Datasheet - Page 4

• Manufacturer Part Number: TDA8944AJ/N2,112
• Description: IC AMP AUDIO PWR 7W STER 17SIL
• Manufacturer: NXP Semiconductors
• Type: Class ABr

Specifications of TDA8944AJ/N2,112

• Output Type: 2-Channel (Stereo)
• Max Output Power X Channels @ Load: 7W x 2 @ 8 Ohm
• Voltage - Supply: 4.5 V ~ 18 V
• Features: Depop, Mute, Short-Circuit and Thermal Protection, Standby, Volume Control
• Mounting Type: Through Hole
• Package / Case: 17-SIL (Bent and Staggered Leads)
• Operational Class: Class-AB
• Audio Amplifier Output Configuration: 2-Channel Stereo
• Output Power (typ): 7x2@8OhmW
• Audio Amplifier Function: Speaker
• Total Harmonic Distortion: 0.07@8Ohm@1W%
• Single Supply Voltage (typ): 12V
• Dual Supply Voltage (typ): Not RequiredV
• Power Supply Requirement: Single
• Power Dissipation: 18W
• Rail/rail I/o Type: No
• Single Supply Voltage (min): 4.5V
• Single Supply Voltage (max): 18V
• Dual Supply Voltage (min): Not RequiredV
• Dual Supply Voltage (max): Not RequiredV
• Operating Temp Range: -40C to 85C
• Operating Temperature Classification: Industrial
• Mounting: Through Hole
• Pin Count: 17
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 568-3461-5; 935270284112; TDA8944AJU

Philips Semiconductors
8. Functional description
9397 750 09433
Product data
8.1 Input configuration
Table 3:
The TDA8944AJ is a stereo BTL audio power amplifier capable of delivering 2
output power to an 8
external heatsink. The gain of both amplifiers can be adjusted through a DC control
voltage (pin GC). This feature can be used for volume control or a preset gain.
With the three-level MODE input the device can be switched from ‘standby’ to ‘mute’
and to ‘operating’ mode.
The TDA8944AJ outputs are protected by an internal thermal shutdown protection
mechanism and a short-circuit protection.
The TDA8944AJ inputs can be driven symmetrical (floating) as well as asymmetrical.
In the asymmetrical mode one input pin is connected via a capacitor to the signal
source and the other input is connected to the signal ground. This signal ground
should be as close as possible to the SVR (electrolytic) capacitor ground. Note that
the DC level of the input pins is half of the supply voltage V
for both pins are necessary.
Symbol
GC
OUT2
GND2
V
OUT2
Fig 3. Asymmetrical input configuration.
CC2
Pin description
Pin
13
14
15
16
17
handbook, halfpage
Rev. 01 — 01 March 2002
source
signal
load at THD = 10%, using a 12 V power supply and an
…continued
Description
DC gain control
negative loudspeaker terminal 2
ground channel 2
supply voltage channel 2
positive loudspeaker terminal 2
2 x 7 W BTL audio amplifier with DC gain control
IN
IN
SVR
ground
signal
V CC
© Koninklijke Philips Electronics N.V. 2002. All rights reserved.
power
ground
CC
MGW589
TDA8944AJ
, so coupling capacitors
4 of 20
7 W