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1998 Feb 23

16

 

NXP Semiconductors

Product specification

3 W mono BTL audio amplifier with DC 
volume control

TDA7056AT

DATA SHEET STATUS

Notes

1. Please consult the most recently issued document before initiating or completing a design.

2. The product status of device(s) described in this document may have changed since this document was published 

and may differ in case of multiple devices. The latest product status information is available on the Internet at 
URL http://www.nxp.com. 

DOCUMENT

STATUS

(1)

PRODUCT 
STATUS

(2)

DEFINITION

Objective data sheet

Development

This document contains data from the objective specification for product 
development. 

Preliminary data sheet

Qualification

This document contains data from the preliminary specification. 

Product data sheet

Production

This document contains the product specification. 

DISCLAIMERS

Limited warranty and liability

 

 Information in this 

document is believed to be accurate and reliable. 
However, NXP Semiconductors does not give any 
representations or warranties, expressed or implied, as to 
the accuracy or completeness of such information and 
shall have no liability for the consequences of use of such 
information. 

In no event shall NXP Semiconductors be liable for any 
indirect, incidental, punitive, special or consequential 
damages (including - without limitation - lost profits, lost 
savings, business interruption, costs related to the 
removal or replacement of any products or rework 
charges) whether or not such damages are based on tort 
(including negligence), warranty, breach of contract or any 
other legal theory. 

Notwithstanding any damages that customer might incur 
for any reason whatsoever, NXP Semiconductors’ 
aggregate and cumulative liability towards customer for 
the products described herein shall be limited in 
accordance with the 

Terms and conditions of commercial 

sale

 of NXP Semiconductors.

Right to make changes

 

 NXP Semiconductors 

reserves the right to make changes to information 
published in this document, including without limitation 
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 Semiconductors products are 

not designed, authorized or warranted to be suitable for 
use in life support, life-critical or safety-critical systems or 
equipment, nor in applications where failure or malfunction 
of an NXP Semiconductors product can reasonably be 
expected to result in personal injury, death or severe 

property or environmental damage. NXP Semiconductors 
accepts no liability for inclusion and/or use of NXP 
Semiconductors products in such equipment or 
applications and therefore such inclusion and/or use is at 
the customer’s own risk.

Applications

 

 Applications that are described herein for 

any of these products are for illustrative purposes only. 
NXP Semiconductors makes no representation or 
warranty that such applications will be suitable for the 
specified use without further testing or modification. 

Customers are responsible for the design and operation of 
their applications and products using NXP 
Semiconductors products, and NXP Semiconductors 
accepts no liability for any assistance with applications or 
customer product design. It is customer’s sole 
responsibility to determine whether the NXP 
Semiconductors product is suitable and fit for the 
customer’s applications and products planned, as well as 
for the planned application and use of customer’s third 
party customer(s). Customers should provide appropriate 
design and operating safeguards to minimize the risks 
associated with their applications and products. 

NXP Semiconductors does not accept any liability related 
to any default, damage, costs or problem which is based 
on any weakness or default in the customer’s applications 
or products, or the application or use by customer’s third 
party customer(s). Customer is responsible for doing all 
necessary testing for the customer’s applications and 
products using NXP Semiconductors products in order to 
avoid a default of the applications and the products or of 
the application or use by customer’s third party 
customer(s). NXP does not accept any liability in this 
respect.

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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