TDA8190 TV SOUND CHANNEL WITH DC CONTROLS .. .. .. .. SEPARATE VCR INPUT AND OUTPUT PINS 4W OUTPUT POWER INTO 16Ω NO SCREENING REQUIRED HIGH SENSITIVITY EXCELLENT AM REJECTION LOW DISTORTION DC TONE/VOLUME CONTROLS THERMAL PROTECTION DESCRIPTION The TDA8190 is a complete TV sound channel with DC tone and volume controls plus separate VCR input and output connections. Mounted in a Powerdip 16 + 2 + 2 package, the device delivers an output power of 4W into 16Ω (d = 10%, Vs = 24V) or 1.5W into 8Ω (d = 10%, Vs = 12V). Included in the TDA8190 are : IF amplifier limiter, active lowpass filter, AF pre-amplifier and power amplifier, turn-off muting, mute circuit and thermal protection. High output, high sensitivity, excellent AM rejection and low distortion make the device suitable for use in TVs of almost every type. Further, no screening is necessarybecause the device is free of radiation problems. DIP20 (Plastic Package) ORDER CODE : TDA8190 TURN-OFF MUTING 1 20 AF PA INPUT SOUND IF INPUT 2 19 AF PA FEEDBACK IF DECOUPLING 3 18 SUPPLY VOLTAGE IF DECOUPLING 4 17 AF PA OUTPUT GND 5 16 GND GND 6 15 GND DETECTOR (FM) 7 14 DCVC OUTPUT DETECTOR (FM) 8 13 VOLUME CONTROL POT DEEMPHASIS AND VCR OUT 9 12 TONE CONTROL POT 10 11 TONE CONTROL CAPACITOR VCR INPUT September 1993 8190-01.EPS PIN CONNECTIONS 1/11 TDA8190 BLOCK DIAGRAM C7 C12 VS RL R3 C6 C5 18 14 1 20 C15 TURN-ON AND TURN-OFF SWITCH VOLTAGE REGULATOR DC VOLUME CONTROL 17 AFPA C16 C1 R4 R6 2 IF IN R5 IF AMP. R1 C2 THRESHOLD SENSOR LOW-PASS FILTER 19 DC TONE CONTROL C17 R8 LIM. 13 3 4 R7 P2 C3 6 15 16 7 L1 VOLUME AMPLI. DETECTOR 5 12 R0 1.1kΩ FM R9 THERMAL PROTECTION 8 10 11 C14 C13 9 C10 P1 S1 C8 TONE 8190-02.EPS C11 C9 VCR OUT VCR IN ABSOLUTE MAXIMUM RATINGS Parameter Vs Supply Voltage (pin 18) Value Unit 28 V ± Vs VI Voltage at Pin 1 Vi Input Voltage (pin 2) Io Output Peak Current (repetitive) Io Output Peak Current (non repetitive) 2 A I4 Current (pin 4) 10 mA Power Dissipation : at T pins = 90 °C at T amb = 70 °C 4.3 1 W W – 40 to 150 °C Ptot Tstg - Tj Storage and Junction Temperature 1 Vpp 1.5 A 8190-01.TBL Symbol Symbol Value Unit R th j–pins Thermal Resistance Junction-pins Parameter Max. 14 °C/W R th j–amb Thermal Resistance Junction-ambient Max. 80 °C/W* (*) Obtained with GND pins soldered to printed circuit with minimized copper area. 2/11 8190-02.TBL THERMAL DATA TDA8190 ELECTRICAL CHARACTERISTICS (refer to the test circuit, VS = 24V, S1 : on, ∆f = ± 25kHz, VI = 1mV, P1 = 12kΩ, fo = 4.5MHz, fm = 400Hz, Tamb = 25°C, unless otherwise specified) Symbol Parameter Test Conditions Min. Typ. Max. 12 13 Unit DC CHARACTERISTICS Vs Supply Voltage (pin 18) Vo Quiescent Output Voltage (pin 17) V1 Pin 1 DC Voltage V4 Pin 4 DC Voltage Id Quiescent Drain Current P2 = 12kΩ 10.8 11 P2 = 12kΩ, R 1 = 270kΩ 27 5.3 P2 = 12kΩ V V 3.2 V 32 mA IF AMPLIFIER AND DETECTOR Vi (threshold) V9 AMR 50 100 µV 200 280 mV Input Limiting Voltage at Pin 2 (–3dB) Vo = 4 Vrms Recovered Audio Voltage (pin 9) ∆f = ± 7.5kHz, P 2 = 12kΩ Amplitude Modulation Rejection (*) m = 0.3, Vi = 1mV, Vo = 4VRMS 60 dB ∆f = 0, P2 = 12kΩ 30 kΩ Ri Input Resistance (pin 2) Ci Input Capacitance (pin 2) R9 Deemphasis Resistance C1 = 68 to 888nF 140 6 pF 0.75 1.1 1.5 kΩ 20 0 26 88 32 dB dB dB DC VOLUME CONTROL Kv Vc ∆KV ∆Tpins Volume Attenuation (resistance control) P2 = 0Ω P2 = 4.3kΩ P2 = 12kΩ Control Voltage K = 0dB K = 26dB K = 88dB Volume Attenuation Thermal Drift (resistance control) Tpins = 25 to 85°C, P2 = 4.3kΩ 0 1.3 2.6 V V V – 0.05 dB/oC 14 dB DC TONE CONTROL KT Tone Cut S1 : Off, V10 = 200 mV P1 = 12kΩ to 100Ω, fAF = 10kHz AUDIO FREQUENCY AMPLIFIER Po Output Power (d = 10 %) Vs = 24 V, RL = 16 Ω Vs = 12 V, RL = 8 Ω 3.5 4.1 1.5 W W B Frequency Response of Audio Amplifier (– 3dB) Po = 1W, RL = 16Ω, S1 : Off, V10 = 200mV, Vo = 4VRMS , @400 Hz 15 50 kHz Supply Voltage Rejection P2 = 12kΩ, ∆f = 0, fripple = 120Hz 26 dB Total Harmonic Distortion of Pin 9 Output Signal ∆f = ± 7.5kHz, V i = 1mV 0.5 % 66 dB 70 dB SVR V. C. R. SVR S+N Supply Voltage Rejection at Output Pin 9 ∆f = 0, fripple = 120Hz, P2 = 12kΩ Signal to Noise Ratio at Output Pin 9 ∆f = 25 kHz, Vi ≥ 1 mV V10 Input Voltage (playback) Vo = 4 Vrms, P2 = 0, S1 : Off 50 R10 Input Resistance (playback) S1 : Off 10 Total Harmonic Distortion for 20dB Overload of V10 S1 : Off, V10 = 1Vrms, Vo = 4Vrms N 70 100 0.5 3 mV kΩ % 3/11 8190-03.TBL d TDA8190 ELECTRICAL CHARACTERISTICS (continued) (refer to the test circuit, VS = 24V, S1 : on, ∆f = ± 25kHz, VI = 1mV, P1 = 12kΩ, fo = 4.5MHz, fm = 400Hz, Tamb = 25°C, unless otherwise specified). Symbol Parameter Test Conditions Min. Typ. Max. Unit S+N N d Signal to Noise Ratio (*) Vi ≥ 1mV, Vo = 4Vrms, ∆f = 0 70 dB Distortion (*) Po = 50mW, ∆f = ± 7.5Hz RL = 16Ω Vs = 24V RL = 8Ω Vs = 12V 0.5 0.5 % % M Muting (*) Vo = 4Vrms@ no V1 ; V1 = 0 ∆f Deviation Sensitivity P2 = 0, Vo = 4Vrms 100 dB 3 6 kHz 8190-04.TBL OVERALL CIRCUIT * Test Bandwidth = 20kHz. TEST CIRCUIT R1 270kΩ VS 470µF 0.1µF 4.7µF 18 0.1µF 1 5 6 15 16 Vo 17 Vi TDA 8190 51Ω 15kΩ 3 4 0.1µF 7 8 9 10 11 12 13 14 C1 68nF L1 2.2kΩ 120pF 2.2kΩ 8.2pF 1µF 1µF 0.1µF S1 ON fo VCR OUT VCR IN (V10) 19 2.2µF 20 270Ω 220nF RL 2.2Ω 2.2µF 12kΩ 10nF OFF 4/11 470µF 2 VC P2 22kΩ P1 22kΩ Tone Volume 8190-03.EPS IF input TDA8190 TEST CONDITIONS (unless otherwise specified) VS = 24V, QO = 60, fO = 4.5MHz, VIN = 1mV, fm = 400Hz, ∆f = ±25kHz, P1 = 12kΩ, RL = ∞, S1 = on Figure 1 : Relative Audio Output Voltage and Output Noise versus Input Signal S+N N (dB) k (dB) Vo S+N N Vi (µV) 0dB = 4V 10 3 10 4 10 5 20 40 60 P2 0 0 m = 0.3 60 0dB = 4V 50 40 30 S1 : off P2 = 0Ω R L = V10 = set for VO = 0dB with fA = 10Hz 10 3 20 f A (Hz) 10 4 10 5 10 8190-06.EPS -30 10 2 Figure 5 : ∆AMR versus Timing Frequency Change V i (µV) 0 m = 0.3 10 4 10 5 V9 (mV) 220 1 Vi = 10mV ∆f = 7.5kHz P2 = 12kΩ 180 -1 140 Vi = 1mV 100 -3 δ fo (kHz) -30 -20 -10 0 10 20 30 60 8190-08.EPS -4 Qo 20 10 20 30 40 50 60 70 5/11 8190-09.EPS -2 -5 -40 10 3 Figure 6 : Recovered Audio Voltage versus Unloaded Q-factor of the Detector Coil 260 0 10 2 10 ∆AMR (dB) 2 2 4 6 8 10 12 14 16 18 20 0.4 0.8 1.2 1.6 2 2.4 2.8 3.2 3.6 4 AMR (dB) 70 P1 = 12kΩ P1 = 5kΩ P1 = 2kΩ P1 = 100Ω -20 P2 (kΩ) V C (V) Figure 4 : Amplitude Modulation Rejection versus Input Signal Vo (dB) -10 VC 80 Figure 3 : DC Tone Control Cut-off the High Audio Frequencies for some Values of Resistance adjusted by P1 -0 ∆f : Set for V = 0dB with P2 = 0Ω ( Vc = 0V) 8190-07.EPS 10 2 10 0 8190-05.EPS 0 10 20 30 40 50 60 70 80 90 8190-04.EPS Vo (dB) 0 -2 -4 -6 -8 -10 -12 -14 -16 -18 Figure 2 : Output Voltage Alternation versus DC Volume Control Resistance (a) or versus DC Volume Control Voltage (b) TDA8190 Figure 7 : Distortion versus Unloaded Q-factor of the Detector Coil Figure 8 : Distortion versus Frequency Variation d (%) 1.2 d (%) 1.2 Vi = 10mV 1.0 R L = 16Ω Po = 250mW 0.8 0.8 0.6 0.4 Qo 0 10 20 Figure 9 : 8 30 40 50 60 70 8190-10.EPS 0.2 Distortion versus Tuning Frequency Change 10 20 30 d (%) 10 R L = 16Ω P o = 1W 6 0 Figure 10 : Distortion versus Output Power d (%) 7 ∆f (kHz) 0 8190-11.EPS 0.4 VS = 12V, R L = 8Ω VS = 24V, R L = 16Ω 8 5 6 4 2 δ fo (kHz) 0 -50 -40 -30 -20 -10 0 10 20 30 40 50 8190-12.EPS 2 1 Figure 11 : Audio Amplifier Frequency Response 0 10-2 10-1 1 10 Figure 12 : Output Power versus Supply Voltage Vo (dB) 5 0 Po (W) d = 10% 4 -4 -6 3 6/11 10 2 10 3 10 4 R L = 16 = Ω 1 f A (Hz) -8 10 R L = 8Ω 2 10 5 8190-14.EPS S1 : off V10 = 200mV C11 to GND = 0 R L = 16Ω R x : set for VO = 0dB with f A = 400Hz -2 V s (V) 0 8 10 12 14 16 18 20 22 24 26 28 8190-15.EPS 2 Plo (W) 8190-13.EPS 4 3 TDA8190 Figure 14 : Power Dissipation and Efficiency versus Output Power η (%) P tot (W) 3 R L = 16Ω P tot 2.5 3 2 2 R L = 8Ω R L = 16Ω V s (V) 0 8 10 12 14 16 18 20 22 24 26 28 8190-16.EPS 1 100 80 60 η 1.5 40 1 20 Po (W) 0 0 1 2 3 4 5 Figure 15 : Quiescent Drain and Quiescent Output Voltage versus Supply Voltage Vo I S (mA) 20 33 Vi = 0 P2 = 12kΩ IS 15 32 Vo 10 31 5 V s (V) 0 29 8 12 16 20 24 28 APPLICATION INFORMATION (refer to the block diagram) IF Amplifier-limiter It is made by six differential stages of 15dB gain each so that an open loop gain of 90dB is obtained. While a unity DC gain is provided, the AC closed loop gain is internally fixed at 70dB that allows a typical input sensitivity of 50µV. The differential output signal is single ended by a 20dB gain amplifier that through a buffer stage, feeds the detector system. Internal diodes protect the inputs against overloads. - Pin 2 is the IF non-inverting input - Pin 3 is decoupled by a capacitor to open the AC loop - Pin 4 grounded by a capacitor, allows a typical 8190-18.EPS 30 sensitivity of 50µV. (see VCR facility too). Low-pass Filter, Fm Detector And Amplifier The IF signal is detected by converting the frequency modulation into amplitude modulation and then detecting it. Since the available modulated signal is a square wave, a 40 dB/decade low-pass filter cuts its harmonics so that a sine wave can feed the two-resonances external network L1, C8 and C9. This network defines the working frequency value, the amplitude of the recovered audio signal and its distortion at the highest frequency deviations. The two resonances f1 (series resonance) and f2 (parallel resonance) can be computed respectively by : XL1 ⋅ XC8 XC9 = and XL1 = XC8 XL1 + XC8 7/11 8190-17.EPS Figure 13 : Power Dissipation versus Supply Voltage (sine wave operation) P tot (W) 4 d = 10% TDA8190 The ratio of these frequenciesdefines the peak-topeak separation of the ”S” curve : C9 f2 = 1+ f1 C8 A differential peak detector detects the audio frequency signal that amplified, reaches the deemphasis network R0 ; C11. The AF amplifier can be muted (see turn-on and turn-off switch and VCR facility). - Pin 7 is the output of the low-pass filter and one input of the differential peak detector - Pin 8 is the other input of the differential peak detector - Pin 9 is used to provide the required deemphasis time constant by grounding it with C11. At this pin, the internal impedance of which is typically of 1.1K, is available the recovered audio signal as auxiliary output. √ DC Tone Control The same signal available or applied to pin 10, after a voltage to current converter, reaches, the DC Tone Control block. It operates, inside the 10KHz bandwidth, by cutting the high audio frequencies with a variable slope of an RC network, by means of P1. The maximum slope of the RC network is of 20dB per decade and its pole is defined by : XC11 = 6.8K, typically. Pin 11 - At this pin is tied the tone capacitor. Pin 12 - Is the DC Tone Control input. DC Volume Control After tone control regulation, the AF current signal reaches the DC volume control block that controls its intensity. The normal control, for which the block has been designed for a narrow spread, is produced by P2 ; however, without P2, a voltage control can be operated by forcing a voltage at pin 13 through R8. - Pin 12, already seen as a DCTC input, is the reference voltage for the DCVC. Because of this, a small interface between tone and volume regulation can be expected. - Pin 13 is the DC volume control input. - Pin 14 after a current to voltage converter, the audio frequency signal comes out at this pin. Audio Frequency Power Amplifier and Thermal Protection Through C12 the signal reaches the amplifier noninverting input. The closed loop gain is defined by 8/11 the feedback at pin 19 (inverting input) or by the ratio : R5 + R4 (dB) GV = 20 Log R5 The amplifier, thermally protected, can supply 4W of power into a 16 load with 24V of supply voltage. The power output stage is a class B type. - Pin 20 is the non-inverting input - Pin 19 is the inverting input - Pin 17 is the output of the AFPA. Turn-on And Turn-off Switch This block has been mainly designed to avoid, turning on the TV set, that transients, produced by the vision output, can reach the speaker. Moreover this block, together an optimized rise time and full time of the supply voltage Vs, canavoid any pop generally producedduring the turn-on and the turn-off transients. Turninig on, pin 1 follows the supply voltage Vs by means of C7 ; a threshold is reached and the muting of the AFPA output (pin 17) is suddenly produced. When Vs reaches it stop, C7 charges itself through the input impedance of pin 1 and the muting is removed with a time constant depending on the C7 value. Turning off, the Vs trend, in series to the voltage Vs V1 and which C7 is charged, drives pin 1 at a low level threshold and a sudden muting is produced again. Since the turn-off can be operated with high output power, if the muting operates when the current through the inductance of the speaker is different from zero, a flyback is generated and then a small pop can be produced. The flyback is clipped by integrated diodes. The thresholds that produce the muting have been chosen in the way that 1 Vpp of ripple on the supply voltage does not produce any switching.. - Pin 1 is the turn-on and turn-off muting input. Supply An integratedvoltage regulator with different output levels, supplies all the blocks operating with small signal. - Pin 18 is the main supply of the device. - Pin 5 ; pin 6 ; pin 15 and pin 16 are the ground of the supply. These pins are used to drain out from the device the heat produced by the dissipated power. TDA8190 C5 C4 C8 C. F C1 R2 R3 Units µH Appl. 4.5 MHz 10 Qo = 60 120 9 68 Murata SFE 4.5 MA 22 1000 1000 pF pF nF pF Ω Ω Appl. 5.5 MHz 12 Qo = 80 68 8.2 47 Murata SFE 5.5 MB 18 560 560 Appl. 6 MHz 10 Qo = 70 68 6.8 47 Murata SFE 6.0 MB 18 470 470 8190-05.TBL Components L1 Figure 16 : Application Circuit R1 270kΩ VS C16 C11 470µF C12 0.1µF 4.7µF C1 IF input 18 CF 1 5 6 15 C15 470µF 16 2 17 Vo R9 C10 TDA 8190 R2 C2 3 4 0.1µF 7 8 9 10 11 12 13 R5 L1 14 C14 2.2kΩ R4 2.2kΩ C5 C3 C7 1µF C4 C8 C6 1µF C9 10nF S1 VCR OUT R12 8.2KΩ b R7 2.2Ω RL P2 22kΩ Tone R11 10KΩ 2.2µF R8 270W VC P1 22kΩ a 220nF 1µF R6 12kΩ 0.1µF AUX VCR OUT 20 15kΩ C13 19 Volume VCR IN R10 18kΩ 8190-19.EPS R3 9/11 TDA8190 Figure 17 : PC Board and Components Layout of the Circuit of Figure 16 (1 : 1 scale) GND - - C15 + C16 AF OUT C1 R3 L1 R9 R8 R7 - C2 C3 PIN 4 C13 + - R2 CF C4 TDA 8190 VS + C12 R1 - + C10 C11 C14 + IF IN GND C9 C5 AUX VCR OUT C7 GND C8 R4 P2 R10 VCR IN R6 C6 R5 R11 VCR OUT b a S1 10/11 P1 8190-20.EPS R12 TDA8190 I b1 L a1 PACKAGE MECHANICAL DATA 20 PINS - PLASTIC DIP B b e E Z Z e3 D 11 1 10 a1 B b b1 D E e e3 F i L Z Min. 0.254 1.39 Millimeters Typ. Max. 1.65 Min. 0.010 0.055 0.45 0.25 Inches Typ. Max. 0.065 0.018 0.010 25.4 8.5 2.54 22.86 1.000 0.335 0.100 0.900 7.1 3.93 3.3 0.280 0.155 DIP20.TBL Dimensions PM-DIP20.EPS F 20 0.130 1.34 0.053 Information furnished is believed to be accurate and reliable. However, SGS-THOMSON Microelectronics assumes no responsibility for the consequences of use of such information nor for any infringement of patents or other rights of third parties which may result from its use. No licence is granted by implication or otherwise under any patent or patent rights of SGS-THOMSON Microelectronics. Specifications mentioned in this publication are subject to change without notice. This publication supersedes and replaces all information previously supplied. SGS-THOMSON Microelectronics products are not authorized for use as critical components in life support devices or systems without express written approval of SGS-THOMSON Microelectronics. 1994 SGS-THOMSON Microelectronics - All Rights Reserved Purchase of I2C Components of SGS-THOMSON Microelectronics, conveys a license under the Philips I2C Patent. Rights to use these components in a I2C system, is granted provided that the system conforms to the I2C Standard Specifications as defined by Philips. SGS-THOMSON Microelectronics GROUP OF COMPANIES Australia - Brazil - China - France - Germany - Hong Kong - Italy - Japan - Korea - Malaysia - Malta - Morocco The Netherlands - Singapore - Spain - Sweden - Switzerland - Taiwan - Thailand - United Kingdom - U.S.A. 11/11