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INTEGRATED CIRCUITS
DATA SHEET
TDA7056A 3 W BTL mono audio output amplifier with DC volume control
Product specificiation File under Integrated Circuits, IC01 July 1994
Philips Semiconductors
Product specificiation
3 W BTL mono audio output amplifier with DC volume control
FEATURES * DC volume control * Few external components * Mute mode * Thermal protection * Short-circuit proof * No switch-on and off clicks * Good overall stability * Low power consumption * Low HF radiation * ESD protected on all pins. QUICK REFERENCE DATA SYMBOL VP PO Gv IP THD PARAMETER positive supply voltage range output power voltage gain gain control range total quiescent current total harmonic distortion VP = 12 V; RL = VP = 0.5 W RL = 16 ; VP = 12 V CONDITIONS 3 34.5 75 - - MIN. 4.5 - 3.5 35.5 80 8 0.3 TYP. GENERAL DESCRIPTION
TDA7056A
The TDA7056A is a mono BTL output amplifier with DC volume control. It is designed for use in TV and monitors, but also suitable for battery-fed portable recorders and radios. Missing Current Limiter (MCL) A MCL protection circuits is built-in. The MCL circuit is activated when the difference in current between the output terminal of each amplifier exceeds 100 mA (typical 300 mA). This level of 100 mA allows for headphone applications (single-ended).
MAX. 18 - 36.5 - 16 1
UNIT V W dB dB mA %
ORDERING INFORMATION EXTENDED TYPE NUMBER TDA7056A Note 1. SOT110-1; 1996 August 21. PACKAGE PINS 9 PIN POSITION SIL MATERIAL plastic CODE SOT110
July 1994
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Philips Semiconductors
Product specificiation
3 W BTL mono audio output amplifier with DC volume control
TDA7056A
VP
handbook, full pagewidth
2 n.c. n.c. 1 9
TDA7056A
I+i 6 positive output
positive input DC volume control
3 5
I -i
8
negative output
STABILIZER Vref
TEMPERATURE PROTECTION
4
7
MGA072 - 1
signal ground
power ground
Fig.1 Block diagram.
PINNING SYMBOL n.c. VP VI GND1 VC OUT+ GND2 OUT- n.c. PIN 1 2 3 4 5 6 7 8 9 DESCRIPTION not connected positive supply voltage voltage input signal ground DC volume control positive output power ground negative output not connected
VC OUT+ GND2 OUT- n.c.
handbook, halfpage
n.c. VP VI GND1
1 2 3 4 5 6 7 8 9
MGA071
TDA7056A
Fig.2 Pin configuration.
July 1994
3
Philips Semiconductors
Product specificiation
3 W BTL mono audio output amplifier with DC volume control
FUNCTIONAL DESCRIPTION The TDA7056A is a mono BTL output amplifier with DC volume control, designed for use in TV and monitor but also suitable for battery-fed portable recorders and radios. In conventional DC volume circuits the control or input stage is AC coupled to the output stage via external capacitor to keep the offset voltage low. In the TDA7056A the DC volume stage is integrated into the input stage so that coupling capacitors are not required and a low offset voltage is maintained. At the same time the minimum supply voltage remains low. The BTL principle offers the following advantages: * lower peak value of the supply current * the frequency of the ripple on the supply voltage is twice the signal frequency
TDA7056A
Thus, a reduced power supply and smaller capacitors can be used which results in cost savings. For portable applications there is a trend to decrease the supply voltage, resulting in a reduction of output power at conventional output stages. Using the BTL principle increases 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 dB to -44 dB. If the DC volume control voltage is below 0.3 V, the device switches to the mute mode. The amplifier is short-circuit proof to ground, VP and across the load. A thermal protection circuit is also implemented. If the crystal temperature rises above +150 C the gain will be reduced, thereby reducing the output power. Special attention is given to switch-on and off clicks, low HF radiation and a good overall stability.
LIMITING VALUES In accordance with the Absolute Maximum System (IEC 134). SYMBOL VP IORM IOSM Ptot Tamb Tstg Tvj Tsc V3 V5 PARAMETER supply voltage range repetitive peak output current non repetitive peak output current total power dissipation operating ambient temperature range storage temperature range virtual junction temperature short-circuit time input voltage pin 3 input voltage pin 5 Tcase < 60 C CONDITIONS - - - - -40 -55 - - - - MIN. MAX. 18 1.25 1.5 9 +85 +150 +150 1 8 8 UNIT V A A W C C C hr V V
THERMAL RESISTANCE SYMBOL Rth j-a Rth j-c from junction to case PARAMETER from junction to ambient in free air THERMAL RESISTANCE 55 K/W 10 K/W
Note to the thermal resistance VP = 12 V; RL = 16 ; The maximum sine-wave dissipation is = 1.8 W. The Rth vj-a of the package is 55 K/W; Tamb (max) = 150 - 55 x 1.8 = 51 C
July 1994
4
Philips Semiconductors
Product specificiation
3 W BTL mono audio output amplifier with DC volume control
CHARACTERISTICS VP = 12 V; f = 1 kHz; RL = 16 ; Tamb = 25 C; unless otherwise specified (see Fig.6) SYMBOL VP IP PARAMETER positive supply voltage range total quiescent current CONDITIONS MIN. 4.5 VP = 12 V; RL = ; note 1 - - 8 TYP.
TDA7056A
MAX. 18 16
UNIT V mA
Maximum gain (V5 = 1.4 V) PO output power THD = 10%; RL = 16 THD = 10%; RL = 8 THD Gv VI Vno(rms) B SVRR |Voff| ZI total harmonic distortion voltage gain input signal handling noise output voltage (RMS value) bandwidth supply voltage ripple rejection DC output offset voltage input impedance pin 3 V5 = 0.8 V;THD < 1% f = 500 kHz; note 2 at -1 dB note 3 PO = 0.5 W 3 - - 34.5 0.5 - - 38 - 15 - note 4 V5 0.3 V; VI = 600 mV - - 3.5 5.2 0.3 35.5 0.65 210 20 Hz to 300 kHz 46 0 20 -44 20 - - - 1 36.5 - - - - 150 25 - 30 dB mV k W W % dB V V
Minimum gain (V5 = 0.5 V) Gv Vno(rms) VO I5 voltage gain noise output voltage (RMS value) dB V V
Mute position output voltage in mute position 30 - 80
DC volume control gain control range control current V5 = 0 V 75 60 80 70 dB A
Notes to the characteristics 1. With a load connected to the outputs the quiescent current will increase, the maximum value of this increase being equal to the DC output offset voltage divided by RL. 2. The noise output voltage (RMS value) at f = 500 kHz is measured with RS = 0 and bandwidth = 5 kHz. 3. The ripple rejection is measured with RS = 0 and f = 100 Hz to 10 kHz. The ripple voltage of 200 mV (RMS value) is applied to the positive supply rail. 4. The noise output voltage (RMS value) is measured with RS = 5 k unweighted.
July 1994
5
Philips Semiconductors
Product specificiation
3 W BTL mono audio output amplifier with DC volume control
TDA7056A
MGA075
MGA076 - 1
40 handbook, halfpage gain (dB) 20
1000 handbook, halfpage Vnoise (V) 800
0 600 - 20 400 - 40 200
- 60
- 80 0 0.4 0.8 1.2 1.6 2.0 V5 (V)
0 0 0.4 0.8 1.2 1.6 V5 (V) 2.0
Fig.3 Gain as a function of DC volume control.
Fig.4 Noise output voltage as a function of DC volume control.
MGA077 - 1
handbook, halfpage
100
I5 (A) 60
20
- 20
- 60
- 100 0 0.4 0.8 1.2 1.6 2.0 V5 (V)
Fig.5 Control current as a function of DC volume control.
July 1994
6
Philips Semiconductors
Product specificiation
3 W BTL mono audio output amplifier with DC volume control
APPLICATION INFORMATION
TDA7056A
(1)
handbook, full pagewidth
VP 100 nF 220 F
2 n.c. n.c. 0.47 F 1 9
TDA7056A
I+i
6
positive input
3 5 R L = 16
I-i RS 5 k STABILIZER Vref DC volume control TEMPERATURE PROTECTION
8
4
7
MGA073 - 1
ground
(1) This capacitor can be omitted if the 220 F electrolytic capacitor is connected close to pin 2.
Fig.6 Test and application diagram.
handbook, halfpage
5 100 k
MGA074
volume control
Fig.7 Application using a potentiometer for volume control; Gv = 30 dB.
July 1994
7
Philips Semiconductors
Product specificiation
3 W BTL mono audio output amplifier with DC volume control
PACKAGE OUTLINE SIL9MPF: plastic single in-line medium power package with fin; 9 leads
TDA7056A
SOT110-1
D
D1 q P P1 A2
A3 q1 q2
A A4 seating plane E pin 1 index
L 1 Z b2 e b b1 wM 9 Q
c
0
5 scale
10 mm
DIMENSIONS (mm are the original dimensions) UNIT mm A 18.5 17.8 A2 max. 3.7 A3 8.7 8.0 A4 15.8 15.4 b 1.40 1.14 b1 0.67 0.50 b2 1.40 1.14 c 0.48 0.38 D (1) 21.8 21.4 D1 21.4 20.7 E (1) 6.48 6.20 e 2.54 L 3.9 3.4 P 2.75 2.50 P1 3.4 3.2 Q 1.75 1.55 q 15.1 14.9 q1 4.4 4.2 q2 5.9 5.7 w 0.25 Z (1) max. 1.0
Note 1. Plastic or metal protrusions of 0.25 mm maximum per side are not included. OUTLINE VERSION SOT110-1 REFERENCES IEC JEDEC EIAJ EUROPEAN PROJECTION
ISSUE DATE 92-11-17 95-02-25
July 1994
8
Philips Semiconductors
Product specificiation
3 W BTL mono audio output amplifier with DC volume control
SOLDERING Introduction There is no soldering method that is ideal for all IC packages. Wave soldering is often preferred when through-hole and surface mounted components are mixed on one printed-circuit board. However, wave soldering is not always suitable for surface mounted ICs, or for printed-circuits with high population densities. In these situations reflow soldering is often used. This text gives a very brief insight to a complex technology. A more in-depth account of soldering ICs can be found in our "IC Package Databook" (order code 9398 652 90011). Soldering by dipping or by wave The maximum permissible temperature of the solder is 260 C; solder at this temperature must not be in contact with the joint for more than 5 seconds. The total contact time of successive solder waves must not exceed 5 seconds. DEFINITIONS Data sheet status Objective specification Preliminary specification Product specification Limiting values
TDA7056A
The device may be mounted up to the seating plane, but the temperature of the plastic body must not exceed the specified maximum storage temperature (Tstg max). If the printed-circuit board has been pre-heated, forced cooling may be necessary immediately after soldering to keep the temperature within the permissible limit. Repairing soldered joints Apply a low voltage soldering iron (less than 24 V) to the lead(s) of the package, below the seating plane or not more than 2 mm above it. If the temperature of the soldering iron bit is less than 300 C it may remain in contact for up to 10 seconds. If the bit temperature is between 300 and 400 C, contact may be up to 5 seconds.
This data sheet contains target or goal specifications for product development. This data sheet contains preliminary data; supplementary data may be published later. This data sheet contains final product specifications.
Limiting values given are in accordance with the Absolute Maximum Rating System (IEC 134). Stress above one or more of the limiting values may cause permanent damage to the device. These are stress ratings only and operation of the device at these or at any other conditions above those given in the Characteristics sections of the specification is not implied. Exposure to limiting values for extended periods may affect device reliability. Application information Where application information is given, it is advisory and does not form part of the specification. LIFE SUPPORT APPLICATIONS These products are not designed for use in life support appliances, devices, or systems where malfunction of these products can reasonably be expected to result in personal injury. Philips customers using or selling these products for use in such applications do so at their own risk and agree to fully indemnify Philips for any damages resulting from such improper use or sale.
July 1994
9

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