TDA8944AJ/N2,112 NXP Semiconductors, TDA8944AJ/N2,112 Datasheet

IC AMP AUDIO PWR 7W STER 17SIL

TDA8944AJ/N2,112

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

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
1. General description
2. Features
3. Applications
4. Quick reference data
M3D541
The TDA8944AJ is a dual-channel audio power amplifier with DC gain control. It has
an output power of 2
Bridge-Tied Load (BTL) amplifiers with an all-NPN output stage and standby/mute
logic. The overall gain can be adjusted from +30 dB down to 50 dB using a DC
control voltage. This feature can be used for volume control or a preset gain.
The TDA8944AJ comes in a 17-pin DIL-bent-SIL (DBS) power package and is pin
compatible with the TDA8944J.
Table 1:
Symbol Parameter
V
I
I
P
THD
q
stb
CC
o
TDA8944AJ
2 x 7 W BTL audio amplifier with DC gain control
Rev. 01 — 01 March 2002
Gain/volume adjustment via a DC control pin
Soft clipping
Operating at a low supply voltage
Standby and mute mode
No on/off switching plops
Low standby current
High supply voltage ripple rejection
Outputs short-circuit protected to ground, supply and across the load
Thermally protected
Printed-circuit board compatible with TDA8946AJ and TDA8580J.
Mains fed applications (e.g. TV sound)
PC audio
Portable audio.
supply voltage
quiescent supply current
standby supply current
output power
total harmonic distortion
Quick reference data
7 W at an 8
Conditions
V
THD = 10%; R
V
P
CC
CC
o
load and a 12 V supply. The circuit contains two
= 1 W
= 12 V; R
= 12 V
L
L
=
= 8 ;
Min
4.5
-
-
6
-
Typ
12
40
-
7
0.07
Product data
Max
18
50
10
-
0.5
Unit
V
mA
W
%
A

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TDA8944AJ/N2,112 Summary of contents

Page 1

TDA8944AJ BTL audio amplifier with DC gain control Rev. 01 — 01 March 2002 M3D541 1. General description The TDA8944AJ is a dual-channel audio power amplifier with DC gain control. It has an output power of ...

Page 2

Philips Semiconductors Table 1: Symbol Parameter G v(max) G v(cr) SVRR 5. Ordering information Table 2: Type number Package TDA8944AJ 6. Block diagram idth Fig 1. Block diagram. 9397 750 09433 Product data BTL audio amplifier ...

Page 3

Philips Semiconductors 7. Pinning information 7.1 Pinning Fig 2. Pin configuration. 7.2 Pin description Table 3: Symbol OUT1 GND1 V CC1 OUT1 n.c. IN1 SGND IN1 IN2 MODE SVR IN2 9397 750 09433 Product data BTL ...

Page 4

Philips Semiconductors Table 3: Symbol GC OUT2 GND2 V CC2 OUT2 8. Functional description The TDA8944AJ is a stereo BTL audio power amplifier capable of delivering 2 output power external heatsink. The gain of both amplifiers can ...

Page 5

Philips Semiconductors The input cut-off frequency is cut off For cut off As shown in the switch-on delay during charging of the input capacitors can be minimized. This results in a good low frequency response ...

Page 6

Philips Semiconductors Table 4: Headroom For the average listening level a power dissipation can be used for a heatsink calculation. 8.3 Mode selection The TDA8944AJ has three functional modes, which can be selected ...

Page 7

Philips Semiconductors 8.6 Built-in protection circuits The TDA8944AJ contains two types of protection circuits, i.e. short-circuit and thermal shutdown. 8.6.1 Short-circuit protection Short-circuit to ground or supply line — This is detected by a so-called ‘missing current’ detection circuit which ...

Page 8

Philips Semiconductors 11. Static characteristics Table 7: Static characteristics amb L Symbol Parameter V supply voltage CC I quiescent supply current q I standby supply current ...

Page 9

Philips Semiconductors 12. Dynamic characteristics Table 8: Dynamic characteristics kHz amb L unless otherwise specified. Symbol Parameter P output power o THD total ...

Page 10

Philips Semiconductors 2 10 handbook, halfpage THD (%) Fig 8. Total harmonic distortion as function of output power. 16 handbook, halfpage P o (W) ...

Page 11

Philips Semiconductors 10 handbook, halfpage P ( Fig 12. Power dissipation as function of output power. handbook, halfpage ...

Page 12

Philips Semiconductors 13. Internal circuitry Table 9: Pin 6 and 8 12 and 9 1 and 4 14 and 17 10 9397 750 09433 Product data BTL audio amplifier with DC gain control Internal circuitry Symbol ...

Page 13

Philips Semiconductors Table 9: Pin 11 13 9397 750 09433 Product data BTL audio amplifier with DC gain control Internal circuitry …continued Symbol Equivalent circuit SVR handbook, halfpage GC handbook, halfpage 13 Rev. 01 — 01 ...

Page 14

Philips Semiconductors 14. Application information handbook, full pagewidth R source 220 220 source 220 220 nF MICROCONTROLLER (1) To prevent high frequency oscillations do not leave the inputs open, connect a ...

Page 15

Philips Semiconductors 220 nF Fig 16. Printed-circuit board layout (single-sided); components view. 14.1.2 Power supply decoupling Proper supply bypassing is critical for low-noise performance and high supply voltage ripple rejection. The respective capacitor location should be as close as possible ...

Page 16

Philips Semiconductors see Figure dissipation - is: 150 P R th(tot) R th(h-a) The calculation above is for an application at worst-case (stereo) sine-wave output signals. In practice music signals will be applied, which decreases the maximum ...

Page 17

Philips Semiconductors 16. Package outline DBS17P: plastic DIL-bent-SIL power package; 17 leads (lead length 12 mm DIMENSIONS (mm are the original dimensions) (1) UNIT 17.0 4.6 ...

Page 18

Philips Semiconductors 17. Soldering 17.1 Introduction to soldering through-hole mount packages This text gives a brief insight to wave, dip and manual soldering. A more in-depth account of soldering ICs can be found in our Data Handbook IC26; Integrated Circuit ...

Page 19

Philips Semiconductors 19. Data sheet status [1] [2] Data sheet status Product status Objective data Development Preliminary data Qualification Product data Production [1] Please consult the most recently issued data sheet before initiating or completing a design. [2] The product ...

Page 20

Philips Semiconductors Contents 1 General description . . . . . . . . . . . . . . . . . . . . . . 1 2 Features . . . . . . . . . ...

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