tfa9843aj NXP Semiconductors, tfa9843aj Datasheet

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tfa9843aj

Manufacturer Part Number
tfa9843aj
Description
Tfa9843aj 20 W Stereo Power Amplifier With Volume Control
Manufacturer
NXP Semiconductors
Datasheet

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Part Number:
TFA9843AJ
Manufacturer:
NXP/恩智浦
Quantity:
20 000
1. General description
2. Features
3. Applications
The TFA9843AJ contains two identical audio power amplifiers. The TFA9843AJ can be
used as two Single-Ended (SE) channels with a volume control. The maximum gain is
26 dB.
The TFA9843AJ comes in a 9-pin DIL-bent-SIL (DBS9P) power package. The TFA9843AJ
is pin compatible with the TFA9842AJ, TFA9843(B)J, TFA9842(B)J and TFA9841J. The
difference between the TFA9843AJ and the TFA9843(B)J, TFA9842(B)J, TFA9841J is the
functionality of pin 7. The TFA9843AJ has a volume control on pin 7 (VC). The
TFA9843(B)J, TFA9842(B)J and TFA9841J have a mode select on pin 7 (MODE).
The TFA9843AJ contains a unique protection circuit that is solely based on multiple
temperature measurements inside the chip. This gives maximum output power for all
supply voltages and load conditions with no unnecessary audio holes. Almost any supply
voltage and load impedance combination can be made as long as thermal boundary
conditions (number of channels used, external heatsink and ambient temperature) allow
it.
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TFA9843AJ
20 W stereo power amplifier with volume control
Rev. 01 — 28 April 2006
2 channel SE: 1 W to 20 W operation possibility
Soft clipping
Input clamps
Volume control
Standby and Mute mode
No on or off switching plops
Low standby current
High supply voltage ripple rejection
Outputs short-circuit protected to ground, supply and across the load
Thermally protected
Pin compatible with the TFA9842AJ, TFA9843(B)J, TFA9842(B)J, TFA9841J
CRT TV and LCD TV
Monitors
PC speakers
Boom box
Mini and micro audio receivers
Preliminary data sheet

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tfa9843aj Summary of contents

Page 1

... TFA9842AJ, TFA9843(B)J, TFA9842(B)J and TFA9841J. The difference between the TFA9843AJ and the TFA9843(B)J, TFA9842(B)J, TFA9841J is the functionality of pin 7. The TFA9843AJ has a volume control on pin 7 (VC). The TFA9843(B)J, TFA9842(B)J and TFA9841J have a mode select on pin 7 (MODE). The TFA9843AJ contains a unique protection circuit that is solely based on multiple temperature measurements inside the chip ...

Page 2

... V. and an amplitude of 300 mV (RMS), which is applied to the positive supply rail. ripple Ordering information Package Name Description DBS9P plastic DIL-bent-SIL power package; 9 leads (lead length 12/11 mm); exposed die pad Rev. 01 — 28 April 2006 TFA9843AJ ; measured in test circuit Min Typ [ ...

Page 3

... VOLUME VC CONTROL TFA9843AJ 5 GND IN2 1 OUT2 2 3 CIV 4 IN1 TFA9843AJ GND 5 SVR OUT1 Rev. 01 — 28 April 2006 TFA9843AJ 8 OUT1 2 OUT2 SHORT-CIRCUIT AND TEMPERATURE PROTECTION SVR 001aae428 001aae429 © Koninklijke Philips Electronics N.V. 2006. All rights reserved ...

Page 4

... This results in a good low frequency response and good switch-on behavior. The TFA9843AJ has clamps on the inputs. In Standby mode the voltage on the input pins is clamped for voltages lower than 0.1 V. When the TFA9843AJ is in Mute, Volume control or Operating mode (maximum gain) the input clamp voltage (RMS). 8.2 Power amplifi ...

Page 5

... For the average listening level a power dissipation of 4.2 W can be used for a heatsink calculation. Table 4. Headroom 8.3 Mode selection The TFA9843AJ has four functional modes, which can be selected by applying the proper DC voltage to pin VC; see Table 5. V I(VC 0 1 ...

Page 6

... This can result in repetitive switching during too high junction temperature. This protects the TFA9843AJ against short-circuits to ground, to the supply voltage, across the load and too high chip temperatures. The protection will only be activated when necessary, so even during a short-circuit condition, a certain amount of (pulsed) current will still fl ...

Page 7

... Hz to ripple 20 kHz mute output voltage channel separation maximum voltage gain difference Rev. 01 — 28 April 2006 TFA9843AJ ; measured in test circuit Min Typ [ 0 ...

Page 8

... V (V) I(VC) Fig 4. Output power (one channel function of mce488 THD N (%) (W) o Fig 6. Total harmonic distortion-plus-noise as a Rev. 01 — 28 April 2006 TFA9843AJ at the input THD = 10 % supply voltage for various loads ...

Page 9

... W stereo power amplifier with volume control mce491 (V) CC Fig 8. Total power dissipation as a function of channel mce495 SVRR (Hz) Fig 10. Supply voltage ripple rejection as a function of Rev. 01 — 28 April 2006 TFA9843AJ 10 P tot ( ...

Page 10

... IN1 220 nF IN2 CIV VOLUME CONTROL MICRO- TFA9843AJ GND Rev. 01 — 28 April 2006 TFA9843AJ 100 nF OUT1 8 1000 F OUT2 2 1000 F SHORT-CIRCUIT AND TEMPERATURE V REF PROTECTION SVR 001aae430 © Koninklijke Philips Electronics N.V. 2006. All rights reserved. ...

Page 11

... GND PWM T2 3 PWM Rev. 01 — 28 April 2006 TFA9843AJ 001aae337 VC 001aae338 001aae339 © Koninklijke Philips Electronics N.V. 2006. All rights reserved ...

Page 12

... AUDIO POWER CS NIJMEGEN TVA TFA9843J 100 nF 1000 F 220 220 nF nF CIV 22 SGND F CIV IN2+ IN1+ Rev. 01 — 28 April 2006 TFA9843AJ 150 F MODE MUTE mce506 © Koninklijke Philips Electronics N.V. 2006. All rights reserved ...

Page 13

... C the temperature raise, caused by the power j(max th(tot) = 90/8.4 K/W = 10.7 K 10.7 K/W th(tot) th(j-mb th(tot) = 90/4.2 K/W = 21.4 K 21.4 K/W th(tot) th(j-mb) Rev. 01 — 28 April 2006 TFA9843AJ 20 W stereo power amplifier with volume control th(j-mb) 2.0 K/W = 8.7 K/W Section 8.2.2. This allows the 2.0 K/W = 19.4 K/W © Koninklijke Philips Electronics N.V. 2006. All rights reserved 2.0 K/ ...

Page 14

... W stereo power amplifier with volume control 150 ( (˚C) 100 loads external heatsink of 10 K/W; music signals. amb Rev. 01 — 28 April 2006 TFA9843AJ mce504 (2) (3) ( © Koninklijke Philips Electronics N.V. 2006. All rights reserved ...

Page 15

... scale ( 14.7 3 12.4 11.4 3.5 2.54 1.27 5.08 14.3 2 11.0 10.0 REFERENCES JEDEC JEITA Rev. 01 — 28 April 2006 TFA9843AJ view B: mounting base side 6.7 4.5 3.4 1.15 17.5 3.8 2.8 4.85 5.5 3.7 3 ...

Page 16

... For PMFP packages hot bar soldering or manual soldering is suitable. TFA9843AJ_1 Preliminary data sheet 20 W stereo power amplifier with volume control Suitability of through-hole mount IC packages for dipping and wave soldering methods Rev. 01 — 28 April 2006 TFA9843AJ stg(max) Soldering method Dipping Wave - suitable ...

Page 17

... Revision history Document ID Release date TFA9843AJ_1 20060428 TFA9843AJ_1 Preliminary data sheet 20 W stereo power amplifier with volume control Data sheet status Change notice Preliminary data sheet - Rev. 01 — 28 April 2006 TFA9843AJ Supersedes - © Koninklijke Philips Electronics N.V. 2006. All rights reserved ...

Page 18

... Trademarks Notice: All referenced brands, product names, service names and trademarks are the property of their respective owners. Rev. 01 — 28 April 2006 TFA9843AJ © Koninklijke Philips Electronics N.V. 2006. All rights reserved ...

Page 19

... Please be aware that important notices concerning this document and the product(s) described herein, have been included in section ‘Legal information’. © Koninklijke Philips Electronics N.V. 2006. For more information, please visit: http://www.semiconductors.philips.com. For sales office addresses, email to: sales.addresses@www.semiconductors.philips.com. TFA9843AJ All rights reserved. Date of release: 28 April 2006 Document identifier: TFA9843AJ_1 ...

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