TEA5101A RGB HIGH VOLTAGE VIDEO AMPLIFIER .. . .. . BANDWIDTH : 10MHz TYPICAL RISE AND FALL TIME : 50ns TYPICAL CRT CATHODES CURRENT OUTPUTS FOR PARALLEL OR SEQUENTIAL CUT-OFF OR DRIVE ADJUSTMENT FLASHOVER PROTECTION POWER DISSIPATION : 3.5W ESD PROTECTED DESCRIPTION The TEA5101A includes three video amplifiers desi-gned with a high voltage DMOS/bipolar technology. It drives directly the three CRT cathodes. The device is protected against flashovers. Due to its three cathode current outputs, the TEA5101A can be used with both parallel and sequential sampling applications. MULTIWATT 15 (Plastic Package) ORDER CODE : TEA5101A PIN CONNECTIONS (top view) 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 BLUE FEEDBACK BLUE CATHODE CURRENT BLUE OUTPUT GREEN FEEDBACK GREEN CATHODE CURRENT GREEN OUTPUT RED FEEDBACK GROUND RED OUTPUT RED CATHODE CURRENT V DD HIGH VOLTAGE RED INPUT GREEN INPUT V CC LOW VOLTAGE BLUE INPUT 5101A-01.EPS Tab connected to Pin 8 June 1993 1/6 TEA5101A PIN FUNCTION N° Function Description Blue Input Input of the ”blue” amplifier. It is a virtual ground with 3.8V bias voltage, 15 microamperes input bias current with 14kΩ input resistance. 2 VCC Low voltage power supply, typically 12V. 3 Green Input See Pin 1. 4 Red Input See Pin 1. 5 VDD High voltage power supply, typically 200V. 6 Red Cathode Current Provides the video processor with a copy of the DC current flowing into the red cathode, for automatic cut-off or gain adjustment. If this control is not used, Pin 6 must be grounded. 7 Red Output Output driving the red cathode. Pin 7 is internally protected against CRT arc discharges by a diode limiting the output voltage to VDD. 8 Ground Also connected to the heat sink. 9 Red Feedback Output driving the feedback resistor network for the red amplifier. 10 Green Output See Pin 7. 11 Green Cathode Current See Pin 6. 12 Green Feedback See Pin 9. 13 Blue Output See Pin 7. 14 Blue Cathode Current See Pin 6. 15 Blue Feedback See Pin 9. 5101A-01.TBL 1 BLOCK DIAGRAM OF EACH CHANNEL VDD 15 (12, 9) 5 40kΩ 13 20kΩ (10, 7) 0.8kΩ 14 (11, 6) 1kΩ 2 2.5kΩ 1 (3, 4) 35Ω 35Ω 6kΩ 3pF 350Ω 2/6 5101A-02.EPS 1.5kΩ GND 8 TEA5101A ABSOLUTE MAXIMUM RATINGS IO IO IF IF Ij Tj Toper Tstg Parameter Supply High Voltage Supply Low Voltage Output Current to VDD to Ground Output Current to VDD to Ground Input Current Junction Temperature Operating Ambient Temperature Storage Temperature Value 250 35 Unit V V Protected 8 mA 45 45 60 150 0 to 70 – 55 to + 150 mA mA mA °C °C °C Value 3 35 Unit °C/W °C/W Pin 5 Pin 2 Pins 7 - 10 - 13 Pins 9 - 12 - 15 Pins 1 - 3 - 4 5101A-02.TBL Symbol VDD VCC Symbol Rth(j-c) R th(j-a) Parameter Maximum Junction Case Thermal Resistance Typical Junction Ambient Thermal Resistance Max. Typ. 5101A-03.TBL THERMAL DATA ELECTRICAL CHARACTERISTICS Tamb = 25oC ; VCC = 12V ; VDD = 200V ; AV = 50 (unless otherwise specified) Parameter Min. Typ. Max. Unit 200 220 V 12 15 V 8 12 mA 33 47 mA 3 10 V VDD High Supply Voltage Pin 5 VCC Low Supply Voltage Pin 2 IDD High Voltage Supply Internal DC Current (Vout 100V) (without the current due to the feedback network ) Pin 5 ICC Low Voltage Supply DC Current Pin 2 Vsath Output Saturation Voltage (High level) IO = – 10 µA Pins 7-10-13 RON Output Mos Transistor (Low level) RON @ IO = 3 mA Pins 7-10-13 1.7 kΩ BW Bandwidth (– 3db) (measured on CRT cathodes) (CLOAD : 10pF – R Protect = 1kΩ – Vout = 100V) ∆ Vout : 50 VPP ∆ Vout : 100 VPP 10 8 MHz MHz 50 ns 50 dB TR - TF GO P VREF 10 19 Rise Time and Fall Time : measured between 10% and 90% of output pulse (C LOAD : 10 pF – R Protect = 1 kΩ – Vout = 100 V) ∆ Vout : 100 VPP Open Loop Gain 47 Internal Power Dissipation (see calculation below) Internal Voltage Reference 3.5 Pins 1-3-4 3.55 3.8 Internal Reference Voltage Difference Between 2 Channels Voltage Reference Temperature Coefficient IIB Input Bias Current (Vout : 100 V) RI Input Resistance –5 Pins 1-3-4 W 4.05 V 5 % mV/°C 15 µA 14 kΩ 3/6 5101A-04.TBL Symbol TEA5101A TYPICAL APPLICATION The TEA5101A consists of three independent amplifiers. Each of them includes : - A differential amplifier, the gain of which is fixed by external feedback resistors, - A voltage reference, - A PMOS transistor providing a copy of the cathode current, - A protection diode against CRT arc discharges. VDD 200V VCC 12V 10µF 4.7µF 2 5 9 39kΩ 1nF VDD 220Ω 10pF* 7 4 * optional 1.8kΩ 1kΩ CATHODE 1 6 VREF 12 VDD 220Ω 10 3 11 15 VDD 13 14 8 4/6 TEA5101A CUT-OFF SAMPLING 5101A-03.EPS 1 TEA5101A APPLICATION INFORMATION PC BOARD LAYOUT The best performances of the high voltage video amplifier will be obtained only with a carefully designed PC board. Output to input capacitances are of particular importance. For a single amplifier, the input-output capacitance, in parallel with the relatively high feedback resis-tance, creates a pole in the closed-loop transfer function. A low parasitic capacitance (0.3pF) feedbackresistor and HF isolated printed wires are necessary. Further more, capacitive coupling from the output of an amplifier toward the input of another one may induce excessive crosstalk. POWER DISSIPATION The power dissipation consists of a static part and a dynamic part. The static dissipation varies with the output voltage. With VDD = 200V, Pstat = 2.6W typ(3.5W max) at VOUT = 100V, 1.5W typ at 150V and 3W typ at 50V (with R feedback = 39kΩ). VOUT first value (100V) will be the reference. The dynamic dissipation depends on the signal spectrum and the load capacitance. - Dynamic power with a typical picture with 150 Vpp modulation is typically 1W. - For a sine wave, dynamic dissipation peramplifier is Pd = F x Cl x Vopp x Vdd x 0.8. The load capacitance CL includes CRT and board capacitance (10pF), and amplifier output capacitance (8pF) : total CL value is about 20pF. For a 5MHZ, 50 Vpp sine wave and a 20pF load capacitance, the maximum dynamic power is 2.5W. - Generally, the maximum dynamic power is reached with a white noise (tuner noise). - Typical value is about 2W. Total dissipation is typically 3.6W (2.6W + 1W). With a maximum static dissipation of 3.5W, total dissipation is : - 4.5W with a typical picture (UER pattern) - 5.5W with white noise 5/6 TEA5101A PMMUL15V.EPS PACKAGE MECHANICAL DATA : 15 PINS – PLASTIC MULTIWATT A B C D E F G G1 H1 H2 L L1 L2 L3 L4 L7 M M1 S S1 Dia. 1 Min. Millimeters Typ. Max. 5 2.65 1.6 Min. 0.55 0.75 1.4 17.91 0.019 0.026 0.045 0.692 0.772 1 0.49 0.66 1.14 17.57 19.6 22.1 22 17.65 17.25 10.3 2.65 4.2 4.5 1.9 1.9 3.65 1.27 17.78 17.5 10.7 4.3 5.08 Inches Typ. Max. 0.197 0.104 0.063 0.039 20.2 22.6 22.5 18.1 17.75 10.9 2.9 4.6 5.3 2.6 2.6 3.85 0.870 0.866 0.695 0.679 0.406 0.104 0.165 0.177 0.075 0.075 0.144 0.050 0.700 0.689 0.421 0.169 0.200 0.022 0.030 0.055 0.705 0.795 0.890 0.886 0.713 0.699 0.429 0.114 0.181 0.209 0.102 0.102 0.152 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. 6/6 MUL15V.TBL Dimensions