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1998 Feb 23

17

 

NXP Semiconductors

Product specification

3 W mono BTL audio amplifier with DC 
volume control

TDA7056AT

Limiting values

 

 Stress above one or more limiting 

values (as defined in the Absolute Maximum Ratings 
System of IEC 60134) will cause permanent damage to 
the device. Limiting values are stress ratings only and 
(proper) operation of the device at these or any other 
conditions above those given in the Recommended 
operating conditions section (if present) or the 
Characteristics sections of this document is not warranted. 
Constant or repeated exposure to limiting values will 
permanently and irreversibly affect the quality and 
reliability of the device.

Terms and conditions of commercial sale

 

 NXP 

Semiconductors products are sold subject to the general 
terms and conditions of commercial sale, as published at 
http://www.nxp.com/profile/terms, unless otherwise 
agreed in a valid written individual agreement. In case an 
individual agreement is concluded only the terms and 
conditions of the respective agreement shall apply. NXP 
Semiconductors hereby expressly objects to applying the 
customer’s general terms and conditions with regard to the 
purchase of NXP Semiconductors products by customer.

No offer to sell or license

 

 Nothing in this document 

may be interpreted or construed as an offer to sell products 
that is open for acceptance or the grant, conveyance or 
implication of any license under any copyrights, 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 require a prior authorization from 
national authorities.

Quick reference data

 

 The Quick reference data is an 

extract of the product data given in the Limiting values and 
Characteristics sections of this document, and as such is 
not complete, exhaustive or legally binding. 

Non-automotive qualified products

 

 Unless this data 

sheet expressly states that this specific NXP 
Semiconductors product is automotive qualified, the 
product is not suitable for automotive use. It is neither 
qualified nor tested in accordance with automotive testing 
or application requirements. NXP Semiconductors accepts 
no liability for inclusion and/or use of non-automotive 
qualified products in automotive equipment or 
applications.

In the event that customer uses the product for design-in 
and use in automotive applications to automotive 
specifications and standards, customer (a) shall use the 
product without NXP Semiconductors’ warranty of the 
product for such automotive applications, use and 
specifications, and (b) whenever customer uses the 
product for automotive applications beyond NXP 
Semiconductors’ specifications such use shall be solely at 
customer’s own risk, and (c) customer fully indemnifies 
NXP Semiconductors for any liability, damages or failed 
product claims resulting from customer design and use of 
the product for automotive applications beyond NXP 
Semiconductors’ standard warranty and NXP 
Semiconductors’ product specifications.

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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