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| TDA8198 DOUBLE AUDIO SWITCH AND DC VOLUME CONTROL FOR TV s s s s A DOUBLE TWO-INPUT CIRCUITS WITH SWITCHING FACILITIES A DOUBLE DC VOLUME CONTROL 12dB MAXIMUM GAIN 90dB SIGNAL DYNAMIC RANGE DESCRIPTION The TDA8198 is a monolithic integrated circuit in DIP14 package intented for TV applications which provides Audio switching facilities between two double inputs including DC volume control. PIN CONNECTIONS RIGHT INPUT 2 NOT TO BE CONNECTED RIGHT OUTPUT GROUND LEFT OUTPUT VS LEFT INPUT 2 1 2 3 4 5 6 7 14 13 12 11 10 9 8 DIP14 (Plastic Package) ORDER CODE : TDA8198 NOT TO BE CONNECTED RIGHT INPUT 1 RIGHT VOLUME CONTROL LEFT VOLUME CONTROL C REF 8198-01.EPS LEFT INPUT 1 SWITCH CONTROL BLOCK DIAGRAM 8 10 6 TDA8198 IMPEDANCE ADAPTER SWITCH S WITCH IMPEDANCE ADAPTER REFERENCE VOLTAGE 7 13 IMPEDANCE ADAPTER V VOLUME CONTROL 1 V 1 VOLUME CONTROL IMPEDANCE ADAPTER 9 1 11 5 3 12 4 May 1996 1/5 8198-02.EPS TDA8198 ABSOLUTE MAXIMUM RATINGS Symbol VS Tstg Toper Supply Voltage Storage Temperature Operating Ambient Temperature Parameter Value 16 -55, +125 0, +70 Unit V o o C C ELECTRICAL CHARACTERISTICS Measured according to the following conditions, unless otherwise specified : Tamb = 25oC, VS = +12V. Symbol VS IS VR VM Supply Voltage Range Supply Current (VIN = 0, VC = 0.5V) Reference Voltage Mode Selection Voltage Audio 1 Audio 2 Switching Input Resistance Audio Input Amplitude DC Volume Control Range @ VI = 0.3VRMS Output/Input Gain for Maximum Volume (V C = 5V) Gain Difference between Channels at VC = 5V Voltage Control Range k = kMAX (volume minimum) k = kMIN (volume maximum) Distortion for VI = 0.25VRMS at Maximum Volume Distortion for VO = 1.2VRMS Crosstalk between Switched Inputs Crosstalk between Channels 1 & 2 Audio Input Resistance Audio Output Resistance Output Noise Level @ VC = 5V (weighted) (curve : DIN45 405) I - VC Volume Control Input Current (Pins 11 and 12) at VC = 5V Volume thermal stability (k = 30dB, 0 < Tamb < 60 C) o Parameter Min. 10.8 Typ. 12 24 6.9 Max. 13.2 32 Unit V mA V V 9.5 15 70 30 0.125 90 12 0 5 VS k 0.3 VRMS dB dB dB V 0.5 R SW VI k kMIN dK VC 5 0.3 80 70 22 10 300 -12 0.04 300 1 5 % % dB dB k A dB/oC 8198-02.TBL THD1 THD2 CT CC RI RO VRMS 2/5 8198-01.TBL TDA8198 Figure 1 : Gain versus Volume Control 20 0 GAIN (dB) -20 -40 -60 -80 8198-03.EPS Figure 2 : Distortion versus Volume Control 0.45 0.40 DISTORTION (%) V IN = 0.25V RMS f = 1kHz VIN = 0.3V RMS f = 1kHz 0.35 0.30 0.25 0.20 0.15 0.10 0 1 2 3 4 5 6 3.5 4.5 5.5 VOLUME CONTROL (V) VOLUME CONTROL (V) Figure 3 : Distortion versus Voltage Input 20 16 Figure 4 : Supply Voltage Rejection -20 -24 -28 SVR (dB) -32 -36 V IN = 0.3V RMS f = 100Hz V C = 5V DISTORTION (%) 12 8 4 -40 8198-05.EPS V C = 0V 11 12 13 14 15 16 8198-06.EPS 8198-08.EPS 0 0.2 0.4 0.6 0.8 1 -44 10 VOLTAGE INPUT (V RMS) SUPPLY VOLTAGE (V) Figure 5 : Volume Control Current versus Voltage (pins 11 - 12) VOLUME CONTROL CURRENT (A) -1 -2 -3 -4 -5 -6 -7 -8 -9 -10 -11 -12 0 1 2 3 4 5 6 VOLUME CONTROL (V) Figure 6 : Switch Current versus Voltage (pin 8) 400 350 SWITCH CURRENT (A) 300 250 200 150 100 50 0 8198-07.EPS -50 0 2 4 6 8 10 12 SWITCH VOLTAGE (V) 3/5 8198-04.EPS -100 0.05 2.5 TDA8198 APPLICATION DIAGRAM +V S 6 1k 2.2F 13 1F 4 12 RIGHT VOLUME CONTROL (0.5 to 5V) RIGHT INP UT 1 SWITCH 1 1k RIGHT INTPUT 2 S WITCH CONTROL LEFT INPUT 1 1k 2.2F 9 8 2.2F VOLUME CONTROL 3 RL 10k RIGHT OUPUT REFERENCE VOLTAGE 10 VREF 6.9V 1F SWITCH 7 1k LEFT INPUT 2 2.2F VOLUME CONTROL 5 RL 10k LEFT OUTPUT TDA8198 11 LEFT VOLUME CONTROL (0.5 to 5V) 8198-09.EPS 4/5 TDA8198 PACKAGE MECHANICAL DATA 14 PINS - PLASTIC DIP Dimensions a1 B b b1 D E e e3 F I L Z Min. 0.51 1.39 Millimeters Typ. Max. 1.65 Min. 0.020 0.055 Inches Typ. Max. 0.065 0.5 0.25 20 8.5 2.54 15.24 7.1 5.1 3.3 1.27 2.54 0.050 0.020 0.010 0.787 0.335 0.100 0.600 0.280 0.201 0.130 0.100 DIP14.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 noti ce. 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) 1996 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 - Canada - China - France - Germany - Hong Kong - Italy - Japan - Korea - Malaysia - Malta - Morocco The Netherlands - Singapore - Spain - Sweden - Switzerland - Taiwan - Thailand - United Kingdom - U.S.A. 5/5 PM-DIP14.EPS |
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