TDA4885 Philips Semiconductors, TDA4885 Datasheet
TDA4885
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TDA4885 Summary of contents
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... DATA SHEET TDA4885 150 MHz video controller with 2 I C-bus Product specification Supersedes data of 1997 Mar 19 File under Integrated Circuits, IC02 INTEGRATED CIRCUITS 1997 Nov 25 ...
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... Recommendations for building the application board 14 PACKAGE OUTLINE 15 SOLDERING 15.1 Introduction 15.2 Soldering by dipping or by wave 15.3 Repairing soldered joints 16 DEFINITIONS 17 LIFE SUPPORT APPLICATIONS 18 PURCHASE OF PHILIPS I 1997 Nov 25 2 C-bus 2 C-bus, 6-bit DAC) 2 C-bus, 6-bit 2 C-bus, 6-bit DAC) and 2 C COMPONENTS 2 Product specification TDA4885 ...
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... C-bus 2 GENERAL DESCRIPTION The TDA4885 is a monolithic integrated RGB pre-amplifier for colour monitor systems (e.g. 15" and 17") with I control and OSD. In addition to bus control beam current limiting and gain modulation are possible. The signals are amplified in order to drive commonly used video modules or discrete solutions ...
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... MHz maximum OSD contrast; maximum gain; pins 12, 13 and 14 grounded 4 Product specification TDA4885 MIN. TYP. MAX. UNIT 7.6 8.0 8 7.6 8.0 8 ...
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... Philips Semiconductors 150 MHz video controller with I 5 BLOCK DIAGRAM ok, full pagewidth 1997 Nov 25 2 C-bus 5 Product specification TDA4885 ...
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... REF 32 reference voltage channel 1 1 1997 Nov 25 2 C-bus handbook, halfpage FBL OSD 1 OSD 2 OSD 3 CLI GND V I3 HFB SDA SCL Fig.2 Pin configuration. 6 Product specification TDA4885 1 32 REF GND REF TDA4885 GND REF GND LIM 16 17 MHA342 ...
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... Signal input stage (input clamping, blanking and clipping) The RGB input signals with nominal signal amplitude of 0.7V are capacitively coupled into the TDA4885 from a b-w low-ohmic source (75 recommended) and actively clamped to an internal DC voltage during signal black level. Because of the high-ohmic input impedance of the ...
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... Clamping and blanking pulses The pin CLI of TDA4885 can be directly connected to pin CLBL of e.g. TDA4855 sync processor for input clamping pulses and vertical blanking pulses. The threshold for the input clamping pulse (typical higher than the threshold for the vertical blanking pulse (typical 1 ...
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... I C-bus control 2 The TDA4885 contains an I C-bus receiver for several control functions: 1. Contrast control with 6-bit DAC 2. Brightness control with 6-bit DAC 3. OSD contrast control with 4-bit DAC 4. Gain control for each channel with 6-bit DAC 5. Internal feedback reference and external reference voltage control for each channel with 8-bit DAC 6 ...
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... Equivalent to discharging a 200 pF capacitor via Equivalent to discharging a 100 pF capacitor via a 1500 9 THERMAL CHARACTERISTICS SYMBOL R thermal resistance from junction to ambient th(j-a) 1997 Nov 25 2 C-bus PARAMETER series resistor ( “UZW-B0/FQ-B302” ). series resistor ( “UZW-B0/FQ-A302” ). PARAMETER 10 Product specification TDA4885 MIN. MAX. 0 8.8 V 8 0.1 ...
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... see Fig < 0.8 V; input pulse with 11 50 ns/V; threshold see Fig.7 note 8 no blanking, no output clamping blanking, no output clamping 2.0 blanking, output clamping 11 Product specification TDA4885 ) rbl MIN. TYP. MAX. UNIT 7.6 8.0 8 7.6 8.0 8.8 V ...
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... I(clamp) control bit DISV = MHz 20 control bit DISV = 135 MHz see Fig.8 see Fig I6 I(clamp) note 10; see Fig.3 3FH (maximum) 26H (nominal) 00H (minimum) 3FH to 00H; note 12 12 Product specification TDA4885 MIN. TYP. MAX. UNIT 3 0.4 0 250 200 100 A 0.7 1 ...
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... OSD input pulse (pins 2, 3 and 4) with 1.2 ns/ OSD input pulse (pins 2, 3 and 4) with 1.2 ns/ maximum OSD contrast; maximum gain; pins 12, 13 and 14 connected to ground 00H (minimum) 0FH (maximum) 13 Product specification TDA4885 MIN. TYP. MAX. UNIT 0 1 ...
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... Fig.14 pins 12, 13 and 14 grounded (modulation feature not in use (maximum) 12, 13 12, 13 (minimum) 12, 13 Product specification TDA4885 MIN. TYP. MAX. UNIT 4.7 5.0 5.3 V 4.2 4.5 4.8 V 1.5 2.0 2.5 V 1.0 ...
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... MHz (small signal 90% amplitude; nominal colour signal; note 10% amplitude; nominal colour signal; note 25 input rise/fall time = 1 ns; nominal colour signal 15 Product specification MIN. TYP 0.8 0 +0.8 2.5 2.8 3.1 = 0.7 V; 4.0 4 0.7 V; 0.05 0 0.6 1.2 3.0 2.7 3 3.9 4 TDA4885 MAX. UNIT ...
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... V > 3.5 V 0.01 0.1 > 3.5 V 0.01 0.1 > 3.5 V 2.4 2.8 > 3.5 V 2 TDA4885 MAX. UNIT 4.2 V 6.1 V 0.8 V 1.0 % 1.0 % 4.2 V 6.1 V 1.0 % 1.0 % 400 A 280 0 ...
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... during acknowledge falling supply voltage falling supply voltage > 3 control bit PEDST = 0. 11 > 3 control bit PEDST = 30, 25, 20rbl(min) 30, 25, 20rbl(max) 17 Product specification TDA4885 MIN. TYP. MAX. 60 100 0.0 1.5 3.0 5 0.0 0.4 3.0 5.0 1.5 2.0 3.5 7.0 1 ...
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... C-bus control; subaddress 02H log -------- - -------- - log -------- - -------- - ; are HIGH ( nominal contrast setting and maximum b-w = 0.7 V). 30, 25 0.7 V – log -------- - -------- - > 1 > 1.7 V) the OSD colour signals will C-bus. 2 C-bus control; subaddress 03H Product specification TDA4885 = 1.2 to 3.5 V and vice > 280 ns/V the r/ ...
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... The usage of the gain modulation capability results in a reduction of the overall voltage gain of the TDA4885 but gives enough room for positive and negative modulation. Only pins 12, 13 and 14 connected to ground makes it possible to reach the specified maximum video signals at pins 30, 25 and 20 (see Fig ...
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... C-bus control independent from control bit FPOL; subaddress 07H ; bit resolution 0.4% of voltage range). 3 will be suppressed at CRT cathode by the clamping feedback loop. CRT Fig.3 Input signals. 20 Product specification TDA4885 input reference black level the syncs will be clipped to reference black level internally MHA344 ...
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... Nov 25 2 C-bus (1) (2) (3) (1) (2) (3) (1) (3) 21 Product specification TDA4885 video black levels at maximum brightness nominal brightness minimum brightness reference black level video black level (maximum brightness) reference black level video black level (maximum brightness) reference black level MHA345 ...
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... Fig.5 Output signals without (PEDST = 0) and with pedestal blanking (PEDST = 1). 1997 Nov 25 2 C-bus (1) (2) (1) (2) 22 Product specification TDA4885 video black levels at maximum brightness minimum brightness reference black level video black levels at maximum brightness minimum brightness reference black level pedestal black level ...
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... Fig.7 Timing of pulses at pin 5 and derived internal pulses. 1997 Nov 25 2 C-bus colour signals video black levels at maximum brightness minimum brightness Fig.6 Definition of output signals. t dl5 t dt5 23 Product specification TDA4885 video signals reference black level MHA613 rf5 75 ns/V 1 dl5 MHA347 ...
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... Fig.8 Delay between blanking input and output signal blanking, brightness blanking and output clamping. 1997 Nov 25 2 C-bus t W11 t d11(cl)l t d11(sig)l colour signal reference black level t d11(br)l brightness offset reference black level 24 Product specification TDA4885 t d11(cl)t 50% t d11(sig)t 50% t d11(br)t 50% MHA348 ...
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... No contrast reduction by limiting. (2) Partial contrast reduction by limiting. (3) Full contrast reduction by limiting. 1997 Nov 25 2 C-bus 10H 20H Fig.9 Contrast control characteristic with limiting. 25 Product specification TDA4885 MHA349 (1) (2) (3) 26H 30H contrast control data byte 3FH ...
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... Identical input pulse at pin 1 (fast blanking) and pins 2, 3 and 4 (OSD signal). 1997 Nov 25 2 C-bus t f(FBL) 90% 10% t r(OSD) 90% 90% 10% dV OSD t g(CO) Fig.10 OSD insertion. 26 Product specification t r(FBL) 90% 10% reference black level MHA932 t f(OSD) 10% reference black level MHA933 t g(OC) reference black level MHA934 TDA4885 ...
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... OSD signal amplitude 125 nominal colour signal amplitude 100 (1) (2) 30 (3) 00H OSD contrast control data byte (1) (2) 10H 20H Fig.12 Brightness control characteristic. 27 Product specification TDA4885 MHA351 0FH MHA352 30H 3FH brightness control data byte ...
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... V at pin 12 14. (3) Open-circuit pin 12 14. ( pin 12 14. 1997 Nov 25 2 C-bus 10H 20H Fig.13 Gain control characteristic. 10H 20H Fig.14 Gain modulation. 28 Product specification TDA4885 MHA353 30H 3FH gain control data byte MHA354 (1) (2) (3) (4) 30H 3FH gain control data byte ...
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... Fig.15 Internal feedback reference voltages. (1) 20H 40H 60H 80H Fig.16 External feedback reference voltages. 29 Product specification TDA4885 MHA355 A0H C0H E0H FFH feedback reference data byte MHA356 A0H C0H E0H FFH feedback reference data byte ...
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... N data bytes with auto-increment of subaddresses. 5. STOP condition. 1997 Nov 25 2 C-bus (1) ( (2) SUBADDRESS A 30 Product specification (1) (1) ( (3) (4) DATA BYTE A TDA4885 ( (5) P ...
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... A30 A44 A43 A42 A41 A40 A54 A53 A52 A51 A50 A64 A63 A62 A61 A60 A74 A73 A72 A71 A70 A84 A83 A82 A81 A80 A94 A93 A92 A91 A90 (4) ( FUNCTION TDA4885 NOMINAL (3) VALUE (2) 10H 26H 0FH 3FH 3FH 3FH ...
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... DISO = 1 no USER INPUT yes DISO = 0 RESPONSE TO USER INPUTS (CONTRAST, BRIGHTNESS, OSD CONTRAST) DISO = 1 no DEFLECTION CONTROL IC LOCKED yes 2 Fig.17 I C-bus control flow. 32 Product specification TDA4885 load from program ROM code or EEPROM load from EEPROM load from EEPROM no DISV = 1 MHA614 ...
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INTERNAL CIRCUITRY SYMBOL AND PIN CHARACTERISTIC DESCRIPTION 1 FBL; open-circuit base fast blanking input for OSD insertion 2 OSD ; V < OSD input open-circuit base channel ...
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SYMBOL AND PIN CHARACTERISTIC DESCRIPTION 3 OSD ; V < OSD input open-circuit base channel 280 OSD ; V < ...
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SYMBOL AND PIN CHARACTERISTIC DESCRIPTION 5 CLI; V > 0 vertical open-circuit base blanking input (input clamping source current rising with decreasing voltage outside clamping I1 signal input pulse: open-circuit channel ...
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SYMBOL AND PIN CHARACTERISTIC DESCRIPTION outside clamping I2 signal input pulse: open-circuit channel 2 base with base current compensation during clamping 150 to +150 GND; ground outside clamping I3 ...
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SYMBOL AND PIN CHARACTERISTIC DESCRIPTION 11 HFB; V > 0 horizontal open-circuit base flyback input (output clamping, blanking source current rising with decreasing voltage gain ...
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SYMBOL AND PIN CHARACTERISTIC DESCRIPTION gain modulation open-circuit voltage input channel 2 SDA; no acknowledge C-bus serial open-circuit base data during input/output acknowledge: ...
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SYMBOL AND PIN CHARACTERISTIC DESCRIPTION 17 LIM; open-circuit voltage beam current limiting input V < 4 open-circuit base 18 GND ; 3 ground channel ...
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SYMBOL AND PIN CHARACTERISTIC DESCRIPTION reference black level O3 signal output 0.1 to 2.8 V channel 3 reference black level during output clamping control bit PEDST = 0 pedestal black level 0.1 to 2.8 V pedestal black ...
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SYMBOL AND PIN CHARACTERISTIC DESCRIPTION 22 REF ; 300 to +300 A 3 reference voltage channel 3 23 GND ; 2 ground channel supply voltage channel 2 WAVEFORM EQUIVALENT CIRCUIT ...
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SYMBOL AND PIN CHARACTERISTIC DESCRIPTION reference black level O2 signal output 0.1 to 2.8 V channel 2 reference black level during output clamping control bit PEDST = 0 pedestal black level 0.1 to 2.8 V pedestal black ...
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SYMBOL AND PIN CHARACTERISTIC DESCRIPTION 27 REF ; 300 to +300 A 2 reference voltage channel 2 28 GND ; 1 ground channel supply voltage channel 1 WAVEFORM EQUIVALENT CIRCUIT ...
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SYMBOL AND PIN CHARACTERISTIC DESCRIPTION reference black level O1 signal output 0.1 to 2.8 V channel 1 reference black level during output clamping control bit PEDST = 0 pedestal black level 0.1 to 2.8 V pedestal black ...
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SYMBOL AND PIN CHARACTERISTIC DESCRIPTION 32 REF ; 300 to +300 A 1 reference voltage channel 1 WAVEFORM EQUIVALENT CIRCUIT 170 300 5 7.5 A MHA646 ...
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... I C-BUS Fig.18 Basic application for different output stages with DC coupling (FPOL = coupling (FPOL = 1). 1997 Nov 25 2 C-bus n. TDA4885 n. GND Product specification TDA4885 V CRT = cathode V CRT = 70 V BLACK LEVEL RESTORATION to cathode V CRT = cathode beam current limiting; subcontrast setting MHA927 ...
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... VFBDC but the resistive output load will be changed. The blanking level is: U outbl 2 C-bus The reference outputs are connected to solder pins. 47 with a series resistor of 5.6 P sense). resistor (short circuit; RFB1) and via 10 k RFB1 RFB1 1 0 --------------- - – --------------- - RFB2 RFB2 Product specification TDA4885 can be P1 sense. P1 VFBDC ...
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... REF 3 HFB GND 3 SDA 15 18 SCL LIM Fig.19 Test board. 48 Product specification 1 k channel 1 5.6 solder pin 10 k RFB2 10 k channel 2 RFB1 0.47 150 100 5 (63 V) channel 3 MHA657 TDA4885 VPX V P1 sense VFBDC V P sense V P GND VINDC LIM 5 V ...
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... CLI SDA V P GND SCL Fig.20 Component layout and printed-circuit board; side A (for side B see Fig.21). 1997 Nov 25 2 C-bus 116.84 OSD 3 OSD 2 OSD 1 FBL 100 nF IC1 150 C-bus J5 GM HFB 49 Product specification TDA4885 MHA658 ...
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... MHz video controller with I handbook, full pagewidth 76.20 Fig.21 Component layout and printed-circuit board; side B (for side A see Fig.20). 1997 Nov 25 2 C-bus 116. 100 nF 5.6 150 pF 100 150 5.6 100 nF 150 pF 150 150 5.6 150 pF 100 nF 150 Product specification TDA4885 MHA659 ...
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... Be aware of internal output resistance (80 ). Supply voltages – Capacitors as near as possible to the pins – Use electrolytic capacitors with small serial resistance and inductance. Smearing – Additional peaking circuit at emitter of driver transistor of cascode stage (time constant approximately 100 ns). 1997 Nov 25 2 C-bus 51 Product specification TDA4885 ...
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... SOT232-1 1997 Nov 25 2 C-bus scale (1) ( 1.3 0.53 0.32 29.4 9.1 0.8 0.40 0.23 28.5 8.7 REFERENCES JEDEC EIAJ 52 Product specification 3.2 10.7 12.2 1.778 10.16 2.8 10.2 10.5 EUROPEAN PROJECTION TDA4885 SOT232 ( max. 0.18 1.6 ISSUE DATE 92-11-17 95-02-04 ...
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... If the bit temperature is between 300 and 400 C, contact may seconds. C COMPONENTS 2 C components conveys a license under the Philips’ system provided the system conforms to the I 53 Product specification Repairing soldered joints 2 C patent to use the 2 C specification defined by TDA4885 ). If the stg max ...
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... Philips Semiconductors 150 MHz video controller with I 1997 Nov 25 2 C-bus NOTES 54 Product specification TDA4885 ...
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... Philips Semiconductors 150 MHz video controller with I 1997 Nov 25 2 C-bus NOTES 55 Product specification TDA4885 ...
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... Tel. +46 8 632 2000, Fax. +46 8 632 2745 Switzerland: Allmendstrasse 140, CH-8027 ZÜRICH, Tel. +41 1 488 2686, Fax. +41 1 481 7730 Taiwan: Philips Semiconductors, 6F, No. 96, Chien Kuo N. Rd., Sec. 1, TAIPEI, Taiwan Tel. +886 2 2134 2865, Fax. +886 2 2134 2874 Thailand: PHILIPS ELECTRONICS (THAILAND) Ltd., 209/2 Sanpavuth-Bangna Road Prakanong, BANGKOK 10260, Tel ...