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TDA8190
TV SOUND CHANNEL WITH DC CONTROLS
. . . . . . . .
SEPARATE VCR INPUT AND OUTPUT PINS 4W OUTPUT POWER INTO 16 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 16 (d = 10%, Vs = 24V) or 1.5W into 8 (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. PIN CONNECTIONS
DIP20 (Plastic Package) ORDER CODE : TDA8190
TURN-OFF MUTING SOUND IF INPUT IF DECOUPLING IF DECOUPLING GND GND DETECTOR (FM) DETECTOR (FM) DEEMPHASIS AND VCR OUT VCR INPUT
1 2 3 4 5 6 7 8 9 10
20 19 18 17 16 15 14 13 12 11
AF PA INPUT AF PA FEEDBACK SUPPLY VOLTAGE AF PA OUTPUT GND GND DCVC OUTPUT VOLUME CONTROL POT TONE CONTROL POT TONE CONTROL CAPACITOR
8190-01.EPS
September 1993
1/11
TDA8190
BLOCK DIAGRAM
C7
VS
C5
C12 R3
C6
18
1
RL 14 20
C15 TURN-ON AND TURN-OFF SWITCH
VOLTAGE REGULATOR
DC VOLUME CONTROL
AFPA
17 C16 R4 R6 R5
C1 IF IN R1 C2 3 2
IF AMP. LIM. 4
LOW-PASS FILTER
THRESHOLD SENSOR
DC TONE CONTROL
19
C17 R8 13
R7 12
FM DETECTOR
P2
C3
R0 1.1k
AMPLI.
VOLUME
THERMAL PROTECTION
9
R9
5
6
15
16
7
L1
C8
8
C10 S1
10 11 C14 C13
P1
C9
VCR OUT VCR IN
ABSOLUTE MAXIMUM RATINGS
Symbol Vs VI Vi Io Io I4 Ptot Tstg - Tj Supply Voltage (pin 18) Voltage at Pin 1 Input Voltage (pin 2) Output Peak Current (repetitive) Output Peak Current (non repetitive) Current (pin 4) Power Dissipation : at T pins = 90 C at T amb = 70 C Storage and Junction Temperature Parameter Value 28 Vs 1 1.5 2 10 4.3 1 - 40 to 150 Vpp A A mA
8190-01.TBL 8190-02.TBL
Unit V
W W C
THERMAL DATA
Symbol R th j-pins R th j-amb Parameter Thermal Resistance Junction-pins Thermal Resistance Junction-ambient Max. Max. Value 14 80 Unit C/W C/W*
(*) Obtained with GND pins soldered to printed circuit with minimized copper area.
2/11
8190-02.EPS
C11
TONE
TDA8190
ELECTRICAL CHARACTERISTICS (refer to the test circuit, VS = 24V, S1 : on, f = 25kHz, VI = 1mV, P1 = 12k, fo = 4.5MHz, fm = 400Hz, Tamb = 25C, unless otherwise specified)
Symbol DC CHARACTERISTICS Vs Vo V1 V4 Id Supply Voltage (pin 18) Quiescent Output Voltage (pin 17) Pin 1 DC Voltage Pin 4 DC Voltage Quiescent Drain Current P2 = 12k P2 = 12k, R 1 = 270k P2 = 12k 10.8 11 12 5.3 3.2 32 27 13 V V V mA V mV dB k pF 1.5 k Parameter Test Conditions Min. Typ. Max. Unit
IF AMPLIFIER AND DETECTOR Vi (threshold) V9 AMR Ri Ci R9 Input Limiting Voltage at Pin 2 (-3dB) Recovered Audio Voltage (pin 9) Amplitude Modulation Rejection (*) Input Resistance (pin 2) Input Capacitance (pin 2) Deemphasis Resistance Vo = 4 Vrms f = 7.5kHz, P 2 = 12k m = 0.3, Vi = 1mV, Vo = 4VRMS f = 0, P2 = 12k C1 = 68 to 888nF 0.75 140 50 200 60 30 6 1.1 100 280
DC VOLUME CONTROL Kv Volume Attenuation (resistance control) Control Voltage P2 = 0 P2 = 4.3k P2 = 12k K = 0dB K = 26dB K = 88dB Tpins = 25 to 85C, P2 = 4.3k 20 0 26 88 0 1.3 2.6 - 0.05 32 dB dB dB V V V dB/oC
Vc KV Tpins
Volume Attenuation Thermal Drift (resistance control)
DC TONE CONTROL KT Tone Cut S1 : Off, V10 = 200 mV P1 = 12k to 100, fAF = 10kHz Vs = 24 V, RL = 16 Vs = 12 V, RL = 8 Po = 1W, RL = 16, S1 : Off, V10 = 200mV, Vo = 4VRMS , @400 Hz P2 = 12k, f = 0, fripple = 120Hz f = 7.5kHz, V i = 1mV 14 dB
AUDIO FREQUENCY AMPLIFIER Po B Output Power (d = 10 %) Frequency Response of Audio Amplifier (- 3dB) Supply Voltage Rejection 3.5 15 4.1 1.5 50 W W kHz
SVR V. C. R. d SVR S+N
26
dB
Total Harmonic Distortion of Pin 9 Output Signal
0.5 66 70 50 10 0.5 3 70 100
% dB dB mV %
8190-03.TBL
Supply Voltage Rejection at Output Pin 9 f = 0, fripple = 120Hz, P2 = 12k Signal to Noise Ratio at Output Pin 9 Input Voltage (playback) Input Resistance (playback) Total Harmonic Distortion for 20dB Overload of V10 f = 25 kHz, Vi 1 mV Vo = 4 Vrms, P2 = 0, S1 : Off S1 : Off S1 : Off, V10 = 1Vrms, Vo = 4Vrms
N
V10 R10
k
3/11
TDA8190
ELECTRICAL CHARACTERISTICS (continued) (refer to the test circuit, VS = 24V, S1 : on, f = 25kHz, VI = 1mV, P1 = 12k, fo = 4.5MHz, fm = 400Hz, Tamb = 25C, unless otherwise specified).
Symbol OVERALL CIRCUIT S+N Parameter Test Conditions Min. Typ. Max. Unit
N
d
Signal to Noise Ratio (*) Distortion (*)
Vi 1mV, Vo = 4Vrms, f = 0 Po = 50mW, f = 7.5Hz RL = 16 Vs = 24V RL = 8 Vs = 12V Vo = 4Vrms@ no V1 ; V1 = 0 P2 = 0, Vo = 4Vrms 100
70 0.5 0.5 3 6
dB % % dB kHz
8190-04.TBL 8190-03.EPS
M f
Muting (*) Deviation Sensitivity
* Test Bandwidth = 20kHz.
TEST CIRCUIT
R1 VS 470F 0.1F IF input 2 Vi 51 3 0.1F 4 7 L1 120pF 8.2pF 0.1F OFF S1 ON VCR OUT VCR IN (V10) 1F 1F 8 C1 68nF 2.2k 2.2k 10nF P1 22k 12k VC P2 22k 9 10 11 12 13 14 0.1F 4.7F 18 1 5 6 15 16 17 470F Vo 220nF RL 2.2 270k
TDA 8190
15k 19 2.2F 20 270
2.2F
Tone
Volume
fo
4/11
TDA8190
TEST CONDITIONS (unless otherwise specified) VS = 24V, QO = 60, fO = 4.5MHz, VIN = 1mV, fm = 400Hz, f = 25kHz, P1 = 12k, RL = , S1 = on Figure 1 : Relative Audio Output Voltage and Output Noise versus Input Signal
Vo (dB) 0 -2 -4 -6 -8 -10 -12 -14 -16 -18 10 Vo S+N N (dB) 0 10 20 30 40 50 60 70 80 90
Figure 2 : Output Voltage Alternation versus DC Volume Control Resistance (a) or versus DC Volume Control Voltage (b)
k (dB) 0 20 40 60 80
8190-04.EPS
f : Set for V = 0dB with P2 = 0 ( Vc = 0V)
S+N N 0dB = 4V 10 2 10 3 Vi (V) 10 4
VC P2
P2 (k) V C (V)
8190-05.EPS 8190-09.EPS 8190-07.EPS
10 5
0 0
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
Figure 3 : DC Tone Control Cut-off the High Audio Frequencies for some Values of Resistance adjusted by P1
-0 Vo (dB) P1 = 12k P1 = 5k P1 = 2k P1 = 100 S1 : off P2 = 0 R L = V10 = set for VO = 0dB with fA = 10Hz 10 3 10 4
Figure 4 : Amplitude Modulation Rejection versus Input Signal
AMR (dB) m = 0.3
70 60
0dB = 4V
-10
50 40 30 20
8190-06.EPS
-20
f A (Hz) 10 5
10 0 10 10 2 10 3 10 4
-30 10 2
V i (V) 10 5
Figure 5 : AMR versus Timing Frequency Change
AMR (dB) 2 1 0 -1 -2 -3
8190-08.EPS
Figure 6 : Recovered Audio Voltage versus Unloaded Q-factor of the Detector Coil
260 220 V9 (mV) f = 7.5kHz P2 = 12k
m = 0.3 Vi = 10mV
180 140
Vi = 1mV
100
-4 -5 -40 -30 -20 -10 0 10
fo (kHz) 20 30
60 Qo 20 10 20 30 40 50 60 70
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TDA8190
Figure 7 : Distortion versus Unloaded Q-factor of the Detector Coil
1.2 1.0 0.8 0.6 0.4 0.2
8190-10.EPS
Figure 8 : Distortion versus Frequency Variation
d (%) R L = 16 Po = 250mW 0.8
d (%)
1.2
Vi = 10mV
0.4
0 10 20 30 40 50 60 70
0 0 10 20 30
Figure 9 :
d (%)
Distortion versus Tuning Frequency Change
Figure 10 : Distortion versus Output Power
d (%) VS = 12V, R L = 8 VS = 24V, R L = 16
8 7 6 5 4 3 2 1
10 8 6 4 2
8190-12.EPS
R L = 16 P o = 1W
0 -50 -40 -30 -20 -10 0
10 20 30 40 50
0 10-2
10-1
1
10
Figure 11 : Audio Amplifier Frequency Response
2 0 -2 -4 -6 -8 10 10 2 10 3 10 4 10 5 S1 : off V10 = 200mV C11 to GND = 0 R L = 16 R x : set for VO = 0dB with f A = 400Hz Vo (dB)
Figure 12 : Output Power versus Supply Voltage
5 4 3 2 1
8190-14.EPS
Po (W) d = 10%
R L = 8
R L = 16 =
0 8 10 12 14 16 18 20 22 24 26 28
6/11
8190-15.EPS
f A (Hz)
V s (V)
8190-13.EPS
fo (kHz)
Pl o (W)
8190-11.EPS
Qo
f (kHz)
TDA8190
Figure 13 : Power Dissipation versus Supply Voltage (sine wave operation) P tot (W) 4 d = 10%
3
Figure 14 : Power Dissipation and Efficiency versus Output Power
3 2.5 2 P tot (W) R L = 16 P tot (%) 100 80 60 40 20 0 0 1 2 3 4 5
8190-17.EPS
2 1 0 8
R L = 8
R L = 16
1.5 1
8190-16.EPS
V s (V) 10 12 14 16 18 20 22 24 26 28
Po (W)
Figure 15 : Quiescent Drain and Quiescent Output Voltage versus Supply Voltage
Vo 20 Vi = 0 P2 = 12k 15 10 5 0 8 12 16 20 V s (V) 29 24 28 IS Vo I S (mA) 33 32 31 30
8190-18.EPS
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 50V. 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
sensitivity of 50V. (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
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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. 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.
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
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TDA8190
Components L1 C5 C4 C8 C. F C1 R2 R3 Units H pF pF nF pF Appl. 4.5 MHz 10 Qo = 60 120 9 68 Murata SFE 4.5 MA 22 1000 1000 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
Figure 16 : Application Circuit
R1 270k VS C16 470F C1 IF input R3 CF R2 C2 0.1F 3 4 7 L1 C5 C3 C4 0.1F P1 22k C7 1F C8 C6 1F C9 10nF R4 2.2k 8 9 10 11 12 R5 2.2k R6 12k 13 14 C14 1F 20 C11 0.1F 4.7F 18 2 1 5 6 15 16 17 R9 C10 C15 470F Vo C12
TDA 8190
15k C13 19 2.2F R8 270W
220nF RL
R7 2.2
VC P2 22k
AUX VCR OUT S1 VCR OUT R12 8.2K
a
Tone b R11 10K VCR IN
Volume
9/11
8190-19.EPS
R10 18k
8190-05.TBL
TDA8190
Figure 17 : PC Board and Components Layout of the Circuit of Figure 16 (1 : 1 scale)
GND AF OUT VS CF
C16 + R2
+ C12 R1 -
C15 C13 + C11 C14 + C9
+ R9 R8 R7 C10
PIN 4 IF IN GND AUX VCR OUT GND VCR IN VCR OUT
C1
R3 L1
C4
C5 C7 C8 R10 R11 R12 C6 R4
TDA 8190
C2 C3
R6 P2
R5
S1
10/11
8190-20.EPS
b
a
P1
TDA8190
PACKAGE MECHANICAL DATA 20 PINS - PLASTIC DIP
a1
I
b Z e3
B
e Z
L
b1
E
D
20
11
F
1
10
Dimensions 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
Inches Typ.
Max. 0.065
0.45 0.25 25.4 8.5 2.54 22.86 7.1 3.93 3.3 1.34
0.018 0.010 1.000 0.335 0.100 0.900 0.280 0.155 0.130 0.053
DIP20.TBL
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. (c) 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.
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PM-DIP20.EPS

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