TDA8944AJ/N2,112 NXP Semiconductors, TDA8944AJ/N2,112 Datasheet - Page 14

• 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
14. Application information
9397 750 09433
Product data
Fig 15. Application diagram.
handbook, full pagewidth
(1) To prevent high frequency oscillations do not leave the inputs open, connect a capacitor of 4.7 nF across the input pins
close to the device.
or
MICROCONTROLLER
14.1.1 Layout and grounding
14.1 Printed-circuit board
R source
R source
V i
V i
For a high system performance level certain grounding techniques are essential.
The input reference grounds have to be tied with their respective source grounds and
must have separate tracks from the power ground tracks; this will prevent the large
(output) signal currents from interfering with the small AC input signals. The
small-signal ground tracks should be physically located as far as possible from the
power ground tracks. Supply and output tracks should be as wide as possible for
delivering maximum output power.
220 nF
220 nF
220 nF
220 nF
(1)
(1)
4.7
nF
4.7
nF
MODE
10 F
IN1
IN1
IN2
IN2
SVR
GC
13
12
10
8
6
9
11
Rev. 01 — 01 March 2002
MUTE LOGIC
STANDBY/
7
SGND
V CC1
3
TDA8944AJ
k
k
20
20
V CC
2 x 7 W BTL audio amplifier with DC gain control
16
V CC2
2
GND1
SHORT CIRCUIT
TEMPERATURE
PROTECTION
15
GND2
AND
14
17
1
4
© Koninklijke Philips Electronics N.V. 2002. All rights reserved.
100 nF
OUT1
OUT2
OUT1
OUT2
MGW606
TDA8944AJ
R L
8
R L
8
1000 F
220 nF
220 nF
4
4
220 nF
220 nF
V CC
4
4
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