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| TDA2540 TDA2541 IF AMPLIFIER WITH DEMODULATOR AND AFC . . . . . . . . . . . . . . . SUPPLY VOLTAGE : 12V TYP SUPPLY CURRENT : 50mA TYP I.F. INPUT VOLTAGE SENSITIVITY AT F = 38.9MHz : 85VRMS TYP VIDEO OUTPUT VOLTAGE (white at 10% of top synchro) : 2.7VPP TYP I.F. VOLTAGE GAIN CONTROL RANGE : 64dB TYP SIGNAL TO NOISE RATIO AT VI = 10mV : 58dB TYP A.F.C. OUTPUT VOLTAGE SWING FOR f = 100kHz : 10V TYP DESCRIPTION The TDA2540 and 2541 are IF amplifier and A.M. demodulator circuits for colour and black and white television receivers using PNP or NPN tuners. They are intended for reception of negative or positive modulation CCIR standard. They incorporate the following functions : Gain controlled amplifier Synchronous demodulator White spot inverter Video preamplifier with noise protection Switchable AFC AGC with noise gating Tuner AGC output (NPN tuner for 2540)-(PNP tuner for 2541) VCR switch for video output inhibition (VCR play back) DIP16 (Plastic Package) ORDER CODE : TDA2540-TDA2541 PIN CONNECTIONS IF INPUT DECOUPLING CAPACITOR TUNER AGC TAKE-OVER ADJUST TUNER AGC OUTPUT AFC OUTPUT AFC SWITCH AFC DEMODULATOR L.C. NETWORK REFERENCE L.C. NETWORK 1 2 3 4 5 6 7 8 16 15 14 13 12 11 10 9 IF INPUT DECOUPLING CAPACITOR AGC CAPACITOR GROUND VIDEO OUTPUT VCC AFC DEMODULATOR L.C. NETWORK REFERENCE L.C. NETWORK 2540-01.EPS August 1992 1/7 TDA2540 - TDA2541 BLOCK DIAGRAM ABSOLUTE MAXIMUM RATINGS Symbol V (11-13) V (4-13) Ptot Tstg Tamb Parameter Supply Voltage Tuner A.G.C. Voltage Power Dissipation Storage Temperature Operating Ambient Temperature Value 13.8 12 900 - 55 to + 125 0 to + 70 Unit V V mW C C Symbol R th (j-a) Parameter Junction - ambient Thermal Resistance Value 70 Unit C/W ELECTRICAL OPERATING CHARACTERISTICS Tamb = 25oC ; V11-13 = 12V; f = 38.9MHz (unless otherwise specified) Symbol V11-13 I11 V1-16 V12-13 Z1-16 V12-13 V12-13 GV 2/7 Parameter Supply Voltage Range Supply Current IF Input Voltage Sensitivity Max Input Voltage (Pins 1-16) Video Output Voltage Differential Input Impedance (in parallel with 2pF) Zero Signal Output Level Top Synchro Output Level IF Voltage Gain Control Range Min. 10.2 60 Typ. 12 50 85 140 2.7 2 6 3.07 64 Max. 13.8 60 180 Unit V mA VRMS mV Vpp k V V dB 2540-03.TBL 5.7 2.9 52 6.3 3.2 2540-02.TBL THERMAL DATA 2540-01.TBL 2540-02.TIF TDA2540 - TDA2541 ELECTRICAL OPERATING CHARACTERISTICS (continued) Tamb = 25 C; V (11 - 13) = 12 V; f = 38.9 MHz (unless otherwise specified) Symbol S/N B dG d V12-13 V12-13 Parameter Signal to Noise Ratio (VI = 10mV) (see note 1) Bandwidth of Video Amplifier (- 3dB) Differential Gain Differential Phase Carrier Signal at Video Output (VI = 10mV) 2nd Harmonic of Carrier at Video Output (VI = 10mV) Intermodulation at 1.1MHz (blue) (see Figures 2 and 3) Intermodulation at 1.1MHz (yellow) (see Figures 2 and 3) Intermodulation at 3.3MHz (blue) (see Figures 2 and 3) VCR Switches Off Output at : (VCR = low Level) White Spot Inverter Threshold Level (see Figure 1) White Spot Insertion Level (see Figure 1) Noise Inverter Threshold Level (see Figure 1) Noise Insertion Level (see Figure 1) Tuner AGC output Current Range Tuner AGC Output Voltage Tuner AGC Output Leakage Current TDA2541 V14-13 = 11V, V4-13 = 12V TDA2540 V14-13 = 5V, V4-13 = 12V AFC Output Voltage Swing (f = 100 kHz) Change of Frequency at AFC Output (voltage swing of 10V) AFC Switches OFF (AFC = low level) at : AFC Switches LOW (AFC = High level) at : AFC Zero = Signal Output Voltage (minimum gain) Min. 50 Typ. 58 6 4 2 4 20 60 50 54 6.6 4.7 1.8 3.8 0 to 10 0.3 15 Max. Unit dB MHz % % mVRMS mVRMS dB dB dB V V V V V mA V A 10 10 30 30 46 46 46 V14-13 1.1 I4 V14-13 I4 V5-13 f V6-13 V6-13 V5-13 Note : 1. 10 11 100 3.2 4 6 8 VO (black to white) S (dB) = N VN (RMS at B = 5MHz) Figure 1 : Video Output Waveform Showing White Spot and Noise Inverter Threshold Levels 3/7 2540-03.TIF 2540-04.TBL 200 2.5 V kHz V V V TDA2540 - TDA2541 Figure 2 : Input Conditions for Intermodulation Measurements Figure 3 : Test Set-up for Intermodulation 4/7 2540-05.TIF 2540-04.EPS TDA2540 - TDA2541 Figure 4 : AFC Voltage versus Frequency V5-13 Figure 5 : AFC Voltage versus Frequency V5-13 2540-06.EPS Figure 6 : Signal/Noise Ratio versus Input Voltage V1-16 Figure 7 : AGC Tuner Current Curve TDA2540 TDA2541 2540-09.EPS 2540-08.EPS 5/7 2540-10.EPS 2540-07.EPS TDA2540 - TDA2541 Figure 7 : AGC Tuner Current Curve (continued) TDA2540 - TDA2541 APPLICATION CIRCUIT 6/7 2540-12.EPS 2540-11.EPS TDA2540 - TDA2541 PACKAGE MECHANICAL DATA 16 PINS - PLASTIC DIP a1 I b Z B e3 e L b1 E D 16 9 F 1 8 Dimensions a1 B b b1 D E e e3 F i L Z Min. 0.51 0.77 Millimeters Typ. Max. 1.65 Min. 0.020 0.030 Inches Typ. Max. 0.065 0.5 0.25 20 8.5 2.54 17.78 7.1 5.1 3.3 1.27 0.020 0.010 0.787 0.335 0.100 0.700 0.280 0.201 0.130 0.050 DIP16.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) 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 confo rms 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. 7/7 PM-DIP16.EPS |
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