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 : 85µVRMS 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 IF INPUT 1 16 IF INPUT DECOUPLING CAPACITOR 2 15 DECOUPLING CAPACITOR TUNER AGC TAKE-OVER ADJUST 3 14 AGC CAPACITOR TUNER AGC OUTPUT 4 13 GROUND AFC OUTPUT 5 12 VIDEO OUTPUT AFC SWITCH 6 11 VCC AFC DEMODULATOR L.C. NETWORK 7 10 AFC DEMODULATOR L.C. NETWORK REFERENCE L.C. NETWORK 8 9 August 1992 2540-01.EPS PIN CONNECTIONS REFERENCE L.C. NETWORK 1/7 TDA2540 - TDA2541 2540-02.TIF BLOCK DIAGRAM Value 13.8 12 900 – 55 to + 125 0 to + 70 Unit V V mW °C °C Value 70 Unit °C/W Unit V mA µVRMS mV Vpp kΩ V V dB THERMAL DATA Symbol R th (j-a) Parameter Junction - ambient Thermal Resistance 2540-01.TBL Parameter Supply Voltage Tuner A.G.C. Voltage Power Dissipation Storage Temperature Operating Ambient Temperature 2540-02.TBL Symbol V (11–13) V (4–13) Ptot Tstg Tamb 2540-03.TBL ABSOLUTE MAXIMUM RATINGS 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 5.7 2.9 52 Typ. 12 50 85 140 2.7 2 6 3.07 64 Max. 13.8 60 180 6.3 3.2 TDA2540 - TDA2541 ELECTRICAL OPERATING CHARACTERISTICS (continued) Tamb = 25 °C; V (11 – 13) = 12 V; f = 38.9 MHz (unless otherwise specified) V14-13 I4 V14-13 I4 ∆V5-13 ∆f V6-13 V6-13 V5-13 Note : 1. 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 46 46 46 Typ. 58 6 4 2 4 20 60 50 54 Max. 10 10 30 30 1.1 6.6 4.7 1.8 3.8 0 to 10 0.3 15 10 3.2 4 11 100 6 200 2.5 8 Unit dB MHz % % mVRMS mVRMS dB dB dB V V V V V mA V µA V kHz V V V 2540-04.TBL Symbol S/N B dG dφ V12-13 V12-13 VO (black to white) S (dB) = N VN ⋅ (RMS at B = 5MHz) 2540-03.TIF Figure 1 : Video Output Waveform Showing White Spot and Noise Inverter Threshold Levels 3/7 TDA2540 - TDA2541 2540-04.EPS Figure 2 : Input Conditions for Intermodulation Measurements 2540-05.TIF Figure 3 : Test Set-up for Intermodulation 4/7 TDA2540 - TDA2541 Signal/Noise Ratio versus Input Voltage V1-16 2540-08.EPS Figure 6 : 2540-07.EPS Figure 5 : AFC Voltage versus Frequency V5-13 2540-06.EPS Figure 4 : AFC Voltage versus Frequency V5-13 Figure 7 : AGC Tuner Current Curve TDA2541 2540-10.EPS 2540-09.EPS TDA2540 5/7 TDA2540 - TDA2541 Figure 7 : AGC Tuner Current Curve (continued) 2540-11.EPS TDA2540 - TDA2541 2540-12.EPS APPLICATION CIRCUIT 6/7 TDA2540 - TDA2541 I b1 L a1 PACKAGE MECHANICAL DATA 16 PINS – PLASTIC DIP b B e E Z e3 D 9 1 8 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 0.5 0.25 Inches Typ. Max. 0.065 0.020 0.010 20 8.5 2.54 17.78 0.787 0.335 0.100 0.700 7.1 5.1 3.3 0.280 0.201 DIP16.TBL Dimensions PM-DIP16.EPS F 16 0.130 1.27 0.050 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. 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