INTEGRATED CIRCUITS DATA SHEET TDA1556Q 2 x 22 W stereo BTL differential amplifier with speaker protection and dynamic distortion detector Product specification File under Integrated Circuits, IC01 July 1994 Philips Semiconductors Product specification 2 x 22 W stereo BTL differential amplifier with speaker protection and TDA1556Q FEATURES • Thermally protected • Few peripheral components • Reverse polarity safe • High output power • High energy handling capability at the outputs (VP = 0 V) • Low output offset voltage • Electrostatic discharge protection • Fixed gain • No switch-on/switch-off plop • Loudspeaker protection (with diagnostic facility) • Flexible leads • Differential inputs • Low thermal resistance • Dynamic Distortion Detector (DDD) • High common mode input signal GENERAL DESCRIPTION • Very high CMRR TDA1556Q is a monolithic integrated class-B output amplifier containing two 22 Watt amplifiers in a BTL configuration. The device is contained in a 17-lead single-in-line (SIL) plastic power package. It has two differential inputs and is primarily intended for car booster applications. • Good ripple rejection • Mute/stand-by switch • Load dump protection • Short-circuit safe QUICK REFERENCE DATA SYMBOL VP PARAMETER CONDITION MIN. TYP. MAX. UNIT positive supply voltage operating 6.0 14.4 18 V non-operating − − 30 V load dump − − 45 V IORM repetitive peak output current − − 4 A IP total quiescent current − 80 − mA Isb stand-by current − 0.1 100 µA Isw switch-on current − − 60 µA Zi input impedance 50 − − kΩ − − 150 °C − 22 − W − − dB Tvj virtual junction temperature PO output power 4 Ω; THD = 10% SVRR supply voltage ripple rejection RS = 0 Ω; f = 100 Hz to 10 kHz 48 Vos DC output offset voltage − − 100 mV α channel separation 40 − − dB ∆Gv channel unbalance − − 1 dB CMRR rejection ratio − 72 − dB ORDERING INFORMATION PACKAGE EXTENDED TYPE NUMBER TDA1556Q(1) PINS PIN POSITION MATERIAL CODE 17 SIL plastic SOT243R Note 1. SOT243-1; 1996 August 19. July 1994 2 Philips Semiconductors Product specification 2 x 22 W stereo BTL differential amplifier with speaker protection and dynamic TDA1556Q VP handbook, full pagewidth input 1A input 1B 5 1 13 mute switch 2 6 VA output 1A mute switch 8 VA DDD 4 14 stand-by switch LSP output 1B VA 15 mute/stand-by stand-by reference voltage mute switch x1 n.c. input 2A input 2B TDA1556Q 9 16 mute switch 17 10 VA output 2A mute switch 12 VA n.c. 3 11 7 MLA383-2 powerground Fig.1 Block diagram. July 1994 3 output 2B Philips Semiconductors Product specification 2 x 22 W stereo BTL differential amplifier with speaker protection and dynamic TDA1556Q PINNING SYMBOL PIN DESCRIPTION IN1A 1 input signal 1A IN1B 2 input signal 1B n.c. 3 not connected DDD 4 dynamic distortion detector Vp1 5 OUT1A handbook, halfpage IN 1A 1 IN 1B 2 n.c. 3 positive supply voltage 1 DDD 4 6 output signal 1A V P1 5 GND1 7 power ground 1 OUT 1A 6 OUT1B 8 output signal 1B n.c. 9 not connected OUT2A 10 output signal 2A GND2 11 OUT2B GND 1 7 OUT 1B 8 power ground 2 n.c. 9 12 output signal 2B OUT 2A 10 VP2 13 positive supply voltage 2 M/SB 14 mute/stand-by switch LSP 15 loudspeaker protection IN2A 16 input signal 2B IN2B 17 input signal 2A TDA1556Q GND 2 11 OUT 2B 12 V P2 13 M/SB 14 LSP 15 IN 2A 16 IN 2B 17 MLA381 - 1 Fig.2 Pin configuration. THERMAL RESISTANCE THERMAL SYMBOL handbook, halfpage RESISTANCE Rth j-a from junction to ambient in free air 40 K/W Rth j-c from junction to case (see Figs 3 and 4) 1.5 K/W output 1 output 2 virtual junction PARAMETER 2.8 K/W 2.8 K/W 0.1 K/W case MLA382 Fig.3 Thermal resistance. July 1994 4 Philips Semiconductors Product specification 2 x 22 W stereo BTL differential amplifier with speaker protection and dynamic TDA1556Q FUNCTIONAL DESCRIPTION Loudspeaker protection The TDA1556Q contains two identical amplifiers each with a fixed gain of 26 dB and differential input stages. The device can be used for bridge-tied-load applications. The circuit has the following features: Should a short circuit to ground occur, thereby forcing a DC voltage ≥ 1 V across the loudspeaker, a built-in protection circuit is activated to limit the DC voltage across the speaker to ≤ 1 V. The delay time of the protection circuit can be influenced by the external capacitor connected to pin 15. • low stand-by current (< 100 µA) • low mute/stand-by switching current (low cost supply switch) A dynamic distortion detector (DDD) is activated when clipping occurs at one or both output stages. Its information may be used to operate a sound processor or DC volume control to attenuate the input signal, thereby minimizing the distortion. • mute facility LIMITING VALUES In accordance with the absolute maximum system (IEC 134) SYMBOL VP PARAMETER CONDITION MIN. MAX. UNIT positive supply voltage operating − 18 V non-operating − 30 V during 50 ms (load dump protection); rise time ≥ 2.5 ms − 45 V IOSM non-repetitive peak output current − 6 A IORM repetitive peak output current − 4 A Tstg storage temperature range −55 +150 °C Tvj virtual junction temperature − +150 °C Vpsc AC and DC short-circuit safe voltage − 18 V − 200 mJ VP = 0 energy handling capability at outputs Vpr reverse polarity − 6 V Ptot total power dissipation − 60 W DC CHARACTERISTICS VP = 14.4 V; Tamb = 25 °C; unless otherwise specified SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT Supply VP positive supply voltage IP quiescent current VO DC output voltage note 2 Vos DC output offset voltage operating note 1 6.0 14.4 18 V − 80 160 mA − 6.9 − V − − 100 mV 8.5 − − V Mute/stand-by VON July 1994 switch-on voltage level 5 Philips Semiconductors Product specification 2 x 22 W stereo BTL differential amplifier with speaker protection and dynamic SYMBOL PARAMETER TDA1556Q CONDITIONS MIN. TYP. MAX. UNIT MUTE CONDITION Vmute mute voltage VO output signal in mute position Vos DC output offset voltage VI max = 1 V; f = 1 kHz 3.3 − 6.4 V − − 2 mV − − 100 mV 0 − 2 V STANDBY CONDITION Vsb stand-by voltage Isb DC standby current Isw switch-on current IPSC supply current V14 < 0.5 V − − 100 µA 0.5 V ≤ V14 ≤ 2.0 V − − 500 µA − 25 60 µA − 10 - mA − − 1.0 V − 0.5 − s short-circuit to ground; note 3 Loudspeaker protection ∆V6-8, 10-12 DC voltage across RL td delay time Protection active (∆V4-6 or ∆V7-9 ≤ 1.0 V I15 current information − 25 − µA V15 voltage information 3.6 − − V − − 0.3 V Protection inactive (∆V6-8 and ∆V10-12 ≤ 0.1 V) V15 voltage information Notes to the characteristics 1. The circuit is DC adjusted at VP = 6 to 18 V and AC operating at VP = 8.5 to 18 V 2. At 18 V < VP < 30 V the DC output voltage ≤ VP/2 3. Conditions: V14 = 0 V; short circuit to ground; switch V14 to MUTE or ON condition, rise time at V14 = ≥ 10 µs 4. Frequency response externally fixed 5. Ripple rejection measured at the output with a source-impedance of 0 Ω (maximum ripple amplitude of 2 V) and a frequency between 100 Hz and 10 kHz 6. Mismatching is given by the following equation: Z i1 – Z i2 ∆ Z i = --------------------- × 100°⁄° Z i1 Z i3 – Z i4 ∆ Z i = --------------------- × 100°⁄° Z i3 7. Noise measured in a bandwidth of 20 Hz to 20 kHz 8. Noise output voltage independent of RS (VI = 0 V) 9. Common mode rejection ratio measured at the output with both inputs tied together. VI(RMS) < 3.5 V; f = 100 Hz - 10 kHz July 1994 6 Philips Semiconductors Product specification 2 x 22 W stereo BTL differential amplifier with speaker protection and dynamic TDA1556Q AC CHARACTERISTICS Vp = 14.4 V; RL = 4 Ω; f = 1 kHz; Tamb = 25 °C; unless otherwise specified SYMBOL PO PARAMETER output power CONDITION MIN. TYP. MAX. UNIT THD = 0.5% 15 17 − W THD = 10% 20 22 − W THD = 0.5%; VP = 13.2 V − 12 − W THD = 10%; VP = 13.2 V − 17 − W THD total harmonic distortion PO = 1 W − 0.1 − % B power bandwidth THD = 0.5%; PO = −1 dB; with respect to 15 W − 20 to 15000 − Hz fl low frequency roll-off −1 dB; note 4 − 25 − Hz fh high frequency roll-off −1 dB Gv closed loop voltage gain SVRR supply voltage ripple rejection 20 − − kHz 25 26 27 dB ON condition 48 − − dB MUTE condition 48 − − dB stand-by condition 80 − − dB note 5 Zi input impedance 100 120 150 kΩ ∆Zi input impedance note 6 − 4 − % Vno noise output voltage ON: Rs = 0 Ω; note 7 − 70 120 µV ON: Rs = 10 kΩ; note 7 − 100 − µV MUTE: Rs = 10 kΩ; notes 7 and 8 − 60 − µV Rs = 10 kΩ 40 − − dB α channel separation ∆Gv channel unbalance − − 1 dB CMRR common mode rejection ratio note 9 64 72 − dB THD total harmonic distortion IDDD = 50 µA (peak) − 3.5 − % July 1994 7 Philips Semiconductors Product specification 2 x 22 W stereo BTL differential amplifier with speaker protection and dynamic TDA1556Q mute/stand-by DDD VP handbook, full pagewidth 4 1/2 R s 220 nF 14 5 100 nF 13 1 6 Z i1 audio source R load Z i2 1/2 R s 220 µF n.c. 8 2 9 Vref n.c. 1/2 R s 220 nF 3 15 4.7 µF TDA1556Q 16 10 Z i3 audio source R load Z i4 1/2 R s 220 µF 12 17 7 11 MLA380-2 Fig.4 Stereo BTL test diagram. July 1994 8 2200 µF Philips Semiconductors Product specification 2 x 22 W stereo BTL differential amplifier with speaker protection and dynamic TDA1556Q PACKAGE OUTLINE DBS17P: plastic DIL-bent-SIL power package; 17 leads (lead length 12 mm) SOT243-1 non-concave Dh x D Eh view B: mounting base side d A2 B j E A L3 L Q c 1 17 e1 Z bp e e2 m w M 0 5 v M 10 mm scale DIMENSIONS (mm are the original dimensions) UNIT A A2 bp c D (1) d Dh E (1) e mm 17.0 15.5 4.6 4.2 0.75 0.60 0.48 0.38 24.0 23.6 20.0 19.6 10 12.2 11.8 2.54 e1 e2 1.27 5.08 Eh j L L3 m Q v w x Z (1) 6 3.4 3.1 12.4 11.0 2.4 1.6 4.3 2.1 1.8 0.8 0.4 0.03 2.00 1.45 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 95-03-11 SOT243-1 July 1994 EUROPEAN PROJECTION 9 Philips Semiconductors Product specification 2 x 22 W stereo BTL differential amplifier with speaker protection and dynamic TDA1556Q 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 10