TDA8943SF NXP Semiconductors, TDA8943SF Datasheet

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TDA8943SF

Manufacturer Part Number
TDA8943SF
Description
Manufacturer
NXP Semiconductors
Datasheet

Specifications of TDA8943SF

Dc
0726

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1. General description
2. Features
3. Applications
4. Quick reference data
c
c
The TDA8943SF is a single-channel audio power amplifier with an output power of
6 W at an 8
amplifier with an all-NPN output stage and standby/mute logic. The TDA8943SF
comes in a 9-lead single in-line (SIL) medium power package. The TDA8943SF is
printed-circuit board (PCB) compatible with all other types in the TDA894x family.
One PCB footprint accommodates both the mono and the stereo products.
Table 1:
Symbol Parameter
V
I
I
q
stb
CC
TDA8943SF
6 W mono Bridge Tied Load (BTL) audio amplifier
Rev. 02 — 7 April 2000
Few external components
Fixed gain
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.
Mains fed applications (e.g. TV sound)
PC audio
Portable audio.
supply voltage
quiescent supply current
standby supply current
Quick reference data
load and a 12 V supply. The circuit contains a Bridge Tied Load (BTL)
Conditions
V
CC
= 12 V; R
L
=
Min
6
-
-
Product specification
Typ
12
15
-
Max
18
22
10
Unit
V
mA
A

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TDA8943SF Summary of contents

Page 1

... amplifier with an all-NPN output stage and standby/mute logic. The TDA8943SF comes in a 9-lead single in-line (SIL) medium power package. The TDA8943SF is printed-circuit board (PCB) compatible with all other types in the TDA894x family. One PCB footprint accommodates both the mono and the stereo products. ...

Page 2

... SIL9MPF plastic single in-line medium power package with fin; 9 leads TDA8943SF STANDBY/ MODE MUTE LOGIC SVR GND Rev. 02 — 7 April 2000 TDA8943SF Min Typ Max = 0.03 0 Version SOT110-1 1 OUT 3 OUT SHORT CIRCUIT ...

Page 3

... MODE GND n.c. 8. Functional description The TDA8943SF is a mono BTL audio power amplifier capable of delivering 6 W output power external heatsink. The voltage gain is fixed at 32 dB. With the three-level MODE input the device can be switched from ‘standby’ to ‘mute’ and to ‘operating’ mode. ...

Page 4

... Philips Semiconductors 8.1 Input configuration The TDA8943SF 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 ground which 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 coupling capacitors for both pins are necessary ...

Page 5

... For the average listening level a power dissipation of 1.8 W can be used for a heatsink calculation. 8.3 Mode selection The TDA8943SF has three functional modes, which can be selected by applying the proper DC voltage to pin MODE. See which depend on the supply voltage level. The MODE pin can be driven by a 3-state logic output stage: e ...

Page 6

... A larger capacitor value on the SVR pin improves the ripple rejection behaviour at the lower frequencies. 8.5 Built-in protection circuits The TDA8943SF contains two types of protection circuits, i.e. short-circuit and thermal shutdown. 8.5.1 Short-circuit protection Short-circuit to ground or supply line — This is detected by a so-called ‘missing current’ ...

Page 7

... MGU040 handbook, halfpage (mA (V) Fig 4. Quiescent supply current as function of mode voltage. Rev. 02 — 7 April 2000 TDA8943SF Conditions Value in free air 68 in free air 18 Figure 13; unless otherwise specified. Min Typ Max [ ...

Page 8

... THD = 10% 5 THD = 0. [ kHz 50 ripple [ 100 Hz - ripple to 20 kHz [3] mute mode - = Rev. 02 — 7 April 2000 TDA8943SF 13; unless otherwise specified. Typ Max Unit 0.03 0 110 k 90 120 the input ...

Page 9

... Fig 7. Total harmonic distortion as function of frequency. MGU044 10 handbook, halfpage P tot ( (V) Fig 9. Total power dissipation as function of supply voltage. Rev. 02 — 7 April 2000 TDA8943SF MGU039 0.1 ( (Hz) MGU045 (V) © ...

Page 10

... W mono Bridge Tied Load (BTL) audio amplifier MGU047 5 handbook, halfpage P ( (W) Fig 11. Power dissipation as function of output power Rev. 02 — 7 April 2000 TDA8943SF MGU046 (W) MGU042 (Hz) © Philips Electronics N.V. 2000. All rights reserved ...

Page 11

... Product specification 6 W mono Bridge Tied Load (BTL) audio amplifier Internal circuitry Symbol Equivalent circuit IN+ and OUT and OUT+ MODE 7 SVR Rev. 02 — 7 April 2000 TDA8943SF 1 (SVR) MGU078 100 ...

Page 12

... TDA8943SF V CC MODE 7 STANDBY/ MUTE LOGIC SVR 6 GND Rev. 02 — 7 April 2000 TDA8943SF V CC 100 nF 1000 OUT OUT 30 k SHORT CIRCUIT AND TEMPERATURE PROTECTION 8 GND MGU036 © Philips Electronics N.V. 2000. All rights reserved. ...

Page 13

... Product specification 6 W mono Bridge Tied Load (BTL) audio amplifi 220 nF 1 220 nF 1 OUT 100 nF 1000 F OUT Rev. 02 — 7 April 2000 TDA8943SF MUTE V CC GND MGU037 © Philips Electronics N.V. 2000. All rights reserved ...

Page 14

... This allows for the use of a smaller heatsink: = 100 C th(tot) = 100/1.8 = 55.5 K – 55.5 – 37.5 K/W. th(tot) th(j-mb) should be reduced to 125 C. This requires a j(max kHz and 12. Rev. 02 — 7 April 2000 TDA8943SF is 18 K/W. th(j-mb) th(mb- audio pass band kHz; © Philips Electronics N.V. 2000. All rights reserved. is ignored ...

Page 15

... scale (1) ( 1.40 0.48 21.8 21.4 6.48 3.9 2.54 1.14 0.38 21.4 20.7 6.20 3.4 REFERENCES JEDEC EIAJ Rev. 02 — 7 April 2000 TDA8943SF 2.75 3.4 1.75 15.1 4.4 5.9 0.25 2.50 3.2 1.55 14.9 4.2 5.7 EUROPEAN ISSUE DATE PROJECTION 92-11-17 95-02-25 © Philips Electronics N.V. 2000. All rights reserved. ...

Page 16

... For SDIP packages, the longitudinal axis must be parallel to the transport direction of the printed-circuit board. 9397 750 06865 Product specification 6 W mono Bridge Tied Load (BTL) audio amplifier methods Soldering method Dipping suitable Rev. 02 — 7 April 2000 TDA8943SF ). stg(max) Wave [1] suitable © Philips Electronics N.V. 2000. All rights reserved ...

Page 17

... Section 8.2.2 “Headroom” on page 5 • Section 8.3 “Mode – Standby mode: V power consumption of the TDA8943SF will be reduced to <0.18 mW – Mute mode: the DC level of the input and output pins remain on half the supply voltage – 2.5 V < V – Section 8.3.1 “Switch-on and switch-off” on page 5 • ...

Page 18

... Rev. 02 — 7 April 2000 TDA8943SF Philips Semiconductors assumes no © Philips Electronics N.V. 2000 All rights reserved. ...

Page 19

... United Kingdom: Tel. +44 208 730 5000, Fax. +44 208 754 8421 United States: Tel. +1 800 234 7381 Uruguay: see South America Vietnam: see Singapore Yugoslavia: Tel. +381 11 3341 299, Fax. +381 11 3342 553 Internet: http://www.semiconductors.philips.com (SCA69) Rev. 02 — 7 April 2000 TDA8943SF © Philips Electronics N.V. 2000. All rights reserved ...

Page 20

... Publication thereof does not convey nor imply any license under patent- or other industrial or intellectual property rights. Date of release: 7 April 2000 Document order number: 9397 750 06865 TDA8943SF 6 W mono Bridge Tied Load (BTL) audio amplifier ...

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