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 TDA7056A FEATURES GENERAL DESCRIPTION • DC volume control 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. • Few external components • Mute mode • Thermal protection • Short-circuit proof Missing Current Limiter (MCL) • No switch-on and off clicks 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). • Good overall stability • Low power consumption • Low HF radiation • ESD protected on all pins. QUICK REFERENCE DATA SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT 4.5 − 18 V 3 3.5 − W voltage gain 34.5 35.5 36.5 dB φ gain control range 75 80 − dB IP total quiescent current VP = 12 V; RL = ∞ − 8 16 mA THD total harmonic distortion VP = 0.5 W − 0.3 1 % VP positive supply voltage range PO output power Gv RL = 16 Ω; VP = 12 V ORDERING INFORMATION PACKAGE EXTENDED TYPE NUMBER PINS PIN POSITION MATERIAL CODE TDA7056A 9 SIL plastic SOT110 Note 1. SOT110-1; 1996 August 21. July 1994 2 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. positive input DC volume control 1 TDA7056A 9 I + i 6 I – i 8 positive output 3 5 STABILIZER Vref negative output TEMPERATURE PROTECTION 4 7 signal ground MGA072 - 1 power ground Fig.1 Block diagram. PINNING SYMBOL PIN DESCRIPTION n.c. 1 not connected VP 2 positive supply voltage VI 3 voltage input GND1 4 signal ground VC 5 DC volume control OUT+ 6 positive output GND2 7 power ground OUT− 8 n.c. 9 handbook, halfpage n.c. 1 VP 2 VI 3 GND1 4 VC 5 negative output OUT+ 6 not connected GND2 7 OUT− 8 n.c. 9 TDA7056A MGA071 Fig.2 Pin configuration. July 1994 3 Philips Semiconductors Product specificiation 3 W BTL mono audio output amplifier with DC volume control TDA7056A Thus, a reduced power supply and smaller capacitors can be used which results in cost savings. 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. 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. 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. The maximum gain of the amplifier is fixed at 35.5 dB. The DC volume control stage has a logarithmic control characteristic. 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. 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. At the same time the minimum supply voltage remains low. The BTL principle offers the following advantages: 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. • lower peak value of the supply current • the frequency of the ripple on the supply voltage is twice the signal frequency LIMITING VALUES In accordance with the Absolute Maximum System (IEC 134). SYMBOL PARAMETER CONDITIONS MIN. MAX. UNIT VP supply voltage range − 18 V IORM repetitive peak output current − 1.25 A IOSM non repetitive peak output current − 1.5 A Ptot total power dissipation − 9 W Tamb operating ambient temperature range −40 +85 °C Tstg storage temperature range −55 +150 °C Tvj virtual junction temperature − +150 °C Tcase < 60 °C Tsc short-circuit time − 1 hr V3 input voltage pin 3 − 8 V V5 input voltage pin 5 − 8 V THERMAL RESISTANCE SYMBOL PARAMETER THERMAL RESISTANCE Rth j-a from junction to ambient in free air 55 K/W Rth j-c from junction to case 10 K/W Note to the thermal resistance VP = 12 V; RL = 16 Ω; 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 TDA7056A CHARACTERISTICS VP = 12 V; f = 1 kHz; RL = 16 Ω; Tamb = 25 °C; unless otherwise specified (see Fig.6) SYMBOL PARAMETER VP positive supply voltage range IP total quiescent current CONDITIONS MIN. MAX. UNIT − 18 V VP = 12 V; RL = ∞; note 1 − 8 16 mA THD = 10%; RL = 16 Ω 3 3.5 − W THD = 10%; RL = 8 Ω − 5.2 − W PO = 0.5 W − 0.3 1 % 34.5 35.5 36.5 dB 4.5 TYP. Maximum gain (V5 = 1.4 V) PO output power THD total harmonic distortion Gv voltage gain VI input signal handling V5 = 0.8 V;THD < 1% 0.5 0.65 − V Vno(rms) noise output voltage (RMS value) f = 500 kHz; note 2 − 210 − µV B bandwidth at −1 dB − 20 Hz to 300 kHz − SVRR supply voltage ripple rejection note 3 38 46 − dB |Voff| DC output offset voltage − 0 150 mV ZI input impedance pin 3 15 20 25 kΩ Minimum gain (V5 = 0.5 V) Gv voltage gain Vno(rms) noise output voltage (RMS value) − −44 − dB note 4 − 20 30 µV V5 ≤ 0.3 V; VI = 600 mV − − 30 µV 75 80 − dB 60 70 80 µA Mute position VO output voltage in mute position DC volume control φ gain control range I5 control current V5 = 0 V 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 Ω and bandwidth = 5 kHz. 3. The ripple rejection is measured with RS = 0 Ω 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 kΩ unweighted. July 1994 5 Philips Semiconductors Product specificiation 3 W BTL mono audio output amplifier with DC volume control TDA7056A MGA075 MGA076 - 1 1000 handbook, halfpage handbook,40 halfpage gain Vnoise (µV) 800 (dB) 20 0 600 – 20 400 – 40 200 – 60 0 – 80 0 0.4 0.8 1.2 1.6 0 2.0 V5 (V) MGA077 - 1 100 I5 (µA) 60 20 – 20 – 60 – 100 0.8 1.2 1.6 2.0 V5 (V) Fig.5 Control current as a function of DC volume control. July 1994 1.2 2.0 1.6 Fig.4 Noise output voltage as a function of DC volume control. handbook, halfpage 0.4 0.8 V5 (V) Fig.3 Gain as a function of DC volume control. 0 0.4 6 Philips Semiconductors Product specificiation 3 W BTL mono audio output amplifier with DC volume control TDA7056A APPLICATION INFORMATION (1) VP handbook, full pagewidth 100 nF 220 µF 2 1 n.c. 9 n.c. 0.47 µF positive input TDA7056A I + i 6 3 5 R L = 16 Ω I – i 8 5 kΩ RS STABILIZER Vref TEMPERATURE PROTECTION DC volume control 4 7 MGA073 - 1 ground (1) This capacitor can be omitted if the 220 µF electrolytic capacitor is connected close to pin 2. Fig.6 Test and application diagram. handbook, halfpage 5 100 kΩ 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 TDA7056A PACKAGE OUTLINE SIL9MPF: plastic single in-line medium power package with fin; 9 leads SOT110-1 D D1 q P A2 P1 A3 q1 q2 A A4 seating plane E pin 1 index c L 1 9 b e Z Q b2 w M b1 0 5 10 mm scale DIMENSIONS (mm are the original dimensions) UNIT A A2 max. A3 A4 b b1 b2 c D (1) D1 E (1) e L P P1 Q q q1 q2 w Z (1) max. mm 18.5 17.8 3.7 8.7 8.0 15.8 15.4 1.40 1.14 0.67 0.50 1.40 1.14 0.48 0.38 21.8 21.4 21.4 20.7 6.48 6.20 2.54 3.9 3.4 2.75 2.50 3.4 3.2 1.75 1.55 15.1 14.9 4.4 4.2 5.9 5.7 0.25 1.0 Note 1. Plastic or metal protrusions of 0.25 mm maximum per side are not included. OUTLINE VERSION REFERENCES IEC JEDEC EIAJ ISSUE DATE 92-11-17 95-02-25 SOT110-1 July 1994 EUROPEAN PROJECTION 8 Philips Semiconductors Product specificiation 3 W BTL mono audio output amplifier with DC volume control 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. 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. 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 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 This data sheet contains target or goal specifications for product development. Preliminary specification This data sheet contains preliminary data; supplementary data may be published later. Product specification This data sheet contains final product specifications. Limiting values 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