NXP Semiconductors TDA7056AT Datasheet Download Page 13

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1998 Feb 23

NXP Semiconductors

Product specification

3 W mono BTL audio amplifier with DC
volume control

TDA7056AT

Fig.15 Application with potentiometer as volume

control; maximum gain = 30 dB.

handbook, halfpage

MGM589

100 k

GND

volume

control

TDA7056AT

Fig.16 Application with potentiometer as volume

control; maximum gain = 36 dB.

handbook, halfpage

MGM590

TDA7056AT

22 k

82 k

GND

VP = 12 V

volume

control

Summary of Contents for TDA7056AT

Page 1: ...DATA SHEET Product specification 1998 Feb 23 INTEGRATED CIRCUITS TDA7056AT 3 W mono BTL audio amplifier with DC volume control...

Page 2: ...ntained in a 20 lead small outline package A Missing Current Limiter MCL is built in The MCL circuit is activated when the difference in current between the output terminal of each amplifier exceeds 1...

Page 3: ...volume control TDA7056AT BLOCK DIAGRAM Fig 1 Block diagram handbook full pagewidth positive input 15 MGM576 4 5 TDA7056AT 7 14 I i 17 I i STABILIZER TEMPERATURE PROTECTION 6 DC volume control Vref po...

Page 4: ...DC volume control n c 8 not connected n c 9 not connected n c 10 not connected n c 11 not connected n c 12 not connected n c 13 not connected OUT 14 positive output GND2 15 power ground n c 16 not co...

Page 5: ...es the output power The maximum gain of the amplifier is fixed at 35 5 dB The DC volume control stage has a logarithmic control characteristic The total gain can be controlled from 35 5 to 44 dB If th...

Page 6: ...weighted SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNIT Supply VP supply voltage 4 5 18 V Iq tot total quiescent current RL note 1 8 16 mA Maximum gain V7 1 4 V Po output power THD 10 RL 16 3 3 5 W THD...

Page 7: ...THD as a function of output power VDC 1 4 V 1 VP 12 V RL 16 handbook halfpage 12 0 MGM579 Po W THD 10 1 1 10 2 4 6 10 8 1 Fig 5 THD as a function of frequency VP 12 V Po 0 5 W VDC 1 4 V 1 RL 16 handb...

Page 8: ...f 22 Hz to 22 kHz handbook halfpage 1000 0 800 400 200 600 0 1 2 2 0 MGM583 0 4 1 6 0 8 Vn V V7 V Fig 9 Input signal handling as a function of the supply voltage Tamb 25 C THD 1 RL 16 VDC 0 8 V handb...

Page 9: ...TDA7056AT Fig 11 Total worst case power dissipation as a function of supply voltage 1 RL 8 2 RL 16 3 RL 25 handbook halfpage 0 3 2 1 0 4 20 MGM586 8 12 16 P W VP V 1 3 2 Fig 12 Control current as a f...

Page 10: ...io amplifier with DC volume control TDA7056AT Fig 13 Printed circuit board layout handbook full pagewidth MGM591 VP OUT volume OUT 1 20 TDA7056A BT 5 k 220 F 0 47 F 100 nF 100 nF IN GND D A AUDIO POWE...

Page 11: ...ff behaviour The DC volume control pin a capacitor of 0 1 F avoids disturbances Thermal behaviour The measured thermal resistance of the IC package is highly dependent on the configuration and size of...

Page 12: ...ation diagram To avoid instabilities and too high distortion the input and power ground must be separated as long as possible and connected together as close as possible to the IC 1 This capacitor can...

Page 13: ...l TDA7056AT Fig 15 Application with potentiometer as volume control maximum gain 30 dB handbook halfpage MGM589 7 100 k 1 F GND volume control TDA7056AT Fig 16 Application with potentiometer as volume...

Page 14: ...8 0 o o 0 25 0 1 DIMENSIONS inch dimensions are derived from the original mm dimensions Note 1 Plastic or metal protrusions of 0 15 mm 0 006 inch maximum per side are not included 1 1 0 4 SOT163 1 10...

Page 15: ...is necessary to dry the paste and evaporate the binding agent Preheating duration 45 minutes at 45 C Wave soldering Wave soldering techniques can be used for all SO packages if the following condition...

Page 16: ...on specifications and product descriptions at any time and without notice This document supersedes and replaces all information supplied prior to the publication hereof Suitability for use NXP Semicon...

Page 17: ...opyrights patents or other industrial or intellectual property rights Export control This document as well as the item s described herein may be subject to export control regulations Export might requ...

Page 18: ...ocument does not form part of any quotation or contract is believed to be accurate and reliable and may be changed without notice No liability will be accepted by the publisher for any consequence of...

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