INTEGRATED CIRCUITS DATA SHEET TDA4882 Advanced monitor video controller for OSD Product specification Supersedes data of December 1994 File under Integrated Circuits, IC02 1997 Sep 04 Philips Semiconductors Product specification Advanced monitor video controller for OSD CONTENTS 1 FEATURES 2 GENERAL DESCRIPTION 3 QUICK REFERENCE DATA 4 ORDERING INFORMATION 5 BLOCK DIAGRAM 6 PINNING 7 FUNCTIONAL DESCRIPTION 7.1 7.2 7.3 7.4 7.5 7.6 7.7 7.8 7.9 7.10 General Brightness control Contrast control Output stages Input clamping Vertical blanking Horizontal blanking Cut-off and black-level stabilization On Screen Display Test mode 8 LIMITING VALUES 9 THERMAL CHARACTERISTICS 10 CHARACTERISTICS 11 APPLICATION AND TEST INFORMATION 11.1 Recommendations for building the application board 12 INTERNAL PIN CONFIGURATION 13 PACKAGE OUTLINE 14 SOLDERING 14.1 14.2 14.3 Introduction Soldering by dipping or by wave Repairing soldered joints 15 DEFINITIONS 16 LIFE SUPPORT APPLICATIONS 1997 Sep 04 2 TDA4882 Philips Semiconductors Product specification Advanced monitor video controller for OSD 1 FEATURES 2 • 85 MHz video controller TDA4882 GENERAL DESCRIPTION The TDA4882 is an RGB pre-amplifier for colour monitor systems with SVGA performance, intended for DC or AC coupling of the colour signals to the cathodes of the CRT. • Fully DC controllable • 3 separate video channels With special advantages the circuit can be used in conjunction with the TDA485x monitor deflection IC family. • Input black-level clamping • White level adjustment for 2 channels only • Brightness control with correct grey scale tracking • Contrast control for all 3 channels simultaneously • Cathode feedback to internal reference for cut-off control, which allows unstabilized video supply voltage • Current outputs for RGB signal currents • RGB voltage outputs to external peaking circuits • Blanking and switch-off input for screen protection • Sync on green operation possible • On Screen Display (OSD) facility. 3 QUICK REFERENCE DATA SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT VP positive supply voltage IP supply current 36 48 60 mA Vi(b-w) input voltage, black-to-white − 0.7 1.0 V Vo(b-w) output voltage, black-to-white − 0.79 − V Io(b-w) output current, black-to-white − 50 − mA IOM peak output current − − 100 mA B bandwidth −3 dB 70 85 − MHz Gnom nominal voltage gain nominal contrast; channels 1 and 3 gain control pins open-circuit − 1 − dB ∆G gain control difference for 2 channels relative to Gnom −5 − +2.6 dB CRcontrast contrast control Vi(CC) = 1 to 6 V −22 − +3.4 dB COSD(min) minimum contrast for OSD Vi(CC) = 0.7 V − −40 − dB ∆Vbl brightness control related to nominal output signal amplitude −11 − +34 % Tamb operating ambient temperature −20 − +70 °C 4 7.2 nominal contrast; channels 1 and 3 gain control pins open-circuit 8.0 8.8 V ORDERING INFORMATION TYPE NUMBER TDA4882 1997 Sep 04 PACKAGE NAME DIP20 DESCRIPTION plastic dual in-line package; 20 leads (300 mil) 3 VERSION SOT146-1 Philips Semiconductors Product specification Advanced monitor video controller for OSD 5 TDA4882 BLOCK DIAGRAM handbook, full pagewidth 6.2 V VP = 8 V VP 1 10 kΩ VOLTAGE CONVERTER TDA4882 brightness control signal input 22 nF 75 Ω 10 MΩ 20 2 1.5 kΩ current output VCRT = 90 V CLAMP CLIPPING BAV21 19 voltage output 33 Ω 220 Ω 33 Ω BFQ235 VP 8V 68 kΩ 3 10 kΩ gain control VOLTAGE CONVERTER 18 feedback CHANNEL 1 10 kΩ cut-off control 15 kΩ 6.8 kΩ 4 1.5 kΩ VCRT = 90 V current 17 output signal input 22 nF 75 Ω 10 MΩ 5 BAV21 CLAMP CLIPPING 10 Ω 1 kΩ voltage 16 output 220 Ω 10 kΩ BFQ256 6 VOLTAGE CONVERTER 7 + 6.8 kΩ 860 Ω 22 nF 75 Ω 10 MΩ 8 60 MHz VCRT = 65 V current 14 output signal input cut-off control 15 feedback CHANNEL 2 VP 8V 68 kΩ 15 kΩ VP contrast control CRT 33 Ω REF GAIN 10 kΩ 40 MHz BFQ235 10 Ω 33 Ω 25 MHz BFQ236 BFQ236 CLAMP CLIPPING BAV21 10 Ω voltage 13 output 18 Ω BFQ235 18 Ω 47 nF 1 kΩ 100 Ω 10 Ω VCRT 9 horizontal blanking switch off VOLTAGE CONVERTER input clamping 93 kΩ BFQ256 12 feedback CHANNEL 3 10 kΩ cut-off control 10 kΩ test mode ultra black output clamping blanking 10 clamping pulse vertical blanking test mode VP 5.8 V PULSE DECODER 11 horizontal blanking 10 kΩ gain control Fig.1 Block diagram and basic application circuits for DC and AC coupling. 1997 Sep 04 4 MED910 Philips Semiconductors Product specification Advanced monitor video controller for OSD 6 TDA4882 PINNING SYMBOL PIN DESCRIPTION BC 1 brightness control VIN1 2 signal input channel 1 GC1 3 gain control channel 1 GND 4 ground VIN2 5 signal input channel 2 VIN1 2 19 VOUT1 CC 6 contrast control, OSD switch GC1 3 18 FB1 VP 7 supply voltage GND 4 17 IOUT2 VIN3 8 signal input channel 3 HBL 9 horizontal blanking, switch-off CL 10 input clamping, vertical blanking, test mode GC3 11 gain control channel 3 FB3 12 feedback channel 3 VOUT3 13 voltage output channel 3 IOUT3 14 current output channel 3 FB2 15 feedback channel 2 VOUT2 16 voltage output channel 2 IOUT2 17 current output channel 2 FB1 18 feedback channel 1 VOUT1 19 voltage output channel 1 IOUT1 20 current output channel 1 7 7.1 handbook, halfpage 16 VOUT2 TDA4882 CC 6 15 FB2 VP 7 14 IOUT3 VIN3 8 13 VOUT3 HBL 9 12 FB3 CL 10 11 GC3 MHA815 Fig.2 Pin configuration. For nominal brightness (pin 1 open-circuit) the signal black level is equal to the reference black level. FUNCTIONAL DESCRIPTION General 7.3 Contrast control Contrast is voltage controlled to affect the three channels simultaneously (Fig.4). To provide the correct white point, individual gain controls adjust the signals of channels 1 and 3 relative to the reference channel 2. Gain setting also changes contrast to achieve correct grey scale tracking. 7.4 Output stages The output stages provide both voltage and current outputs. External cascode transistors reduce power consumption of the IC and prevent breakdown of the output transistors. Signal output currents and peaking characteristics are determined by external components at the voltage outputs and the video supply. The channels have separate internal feedback loops which ensure large signal linearity and marginal signal distortion irrespective of output transistor thermal VBE variation (Fig.8). Brightness control Brightness control (Fig.4) yields a simultaneous signal black-level shift of the three channels relative to a reference black level. 1997 Sep 04 20 IOUT1 VIN2 5 Figure 4 illustrates the signal processing. The RGB input signals 0.7 V (p-p) are capacitively coupled into the TDA4882 from a low ohmic source and are clamped to an internal DC voltage (artificial black level). Composite signals will not disturb normal operations because an internal clipping circuit cuts all signal parts below black level. Channels 1 and 3 have a maximum total voltage gain of 7 dB (maximum contrast and maximum individual channel gain), channel 2 having 4.4 dB (maximum contrast and nominal gain). With the nominal channel gain of 1 dB and nominal contrast setting the nominal black-to-white output signal is 0.79 V (p-p). Brightness, contrast and gain control is by DC voltage. 7.2 BC 1 5 Philips Semiconductors Product specification Advanced monitor video controller for OSD 7.5 Ultra-black level is the lowest possible channel output voltage and is not dependent on cut-off stabilization. Input clamping The clamping pulse (Fig.17) is for input clamping only. The input signals are at black level during the clamping pulse and are clamped to an internal artificial black level. The coupling capacitors provide black-level storage. The threshold for the clamping pulse is higher than that for vertical blanking, therefore, the rise and fall times of the clamping pulse need to be faster than 75 ns/V during transition from 1 to 3.5 V. 7.6 7.8 Cut-off and black-level stabilization For cut-off stabilization (DC coupling to the CRT) and black-level stabilization (AC coupling) the video signal at the cathode or the coupling capacitor is divided by an adjustable voltage divider and fed to the channel feedback inputs. During horizontal blanking time this signal is compared with an internal DC voltage of approximately 5.8 V. Any difference will lead to a reference black-level correction by charging or discharging the integrated capacitor which stores the reference black-level information between the horizontal blanking pulses. Vertical blanking The vertical blanking pulse (Fig.17) will be detected if the input voltage is higher than the threshold voltage for approximately 320 ns but does not exceed the threshold for the clamping pulse in the time between. During the vertical blanking pulse the input clamping is disabled to avoid misclamping in the event of composite input signals. The input signal is blanked and the artificial black level is inserted instead. Also the brightness is set internally to its nominal value, thus the output signal is at reference black level. The DC value of the reference black level will be adjusted by cut-off stabilization. 7.7 TDA4882 7.9 On Screen Display For OSD (Fig.3), fast switching of control pin 6 to less than 1 V (e.g. 0.7 V) blanks the input signals. The OSD signals can easily be inserted to the external cascode transistor. 7.10 Test mode During test mode (pins 9 and 10 connected to VP) the black levels at the channel voltage outputs are set internally to typical 0.7 V with nominal brightness and 3 V DC at channel signal inputs. Horizontal blanking During horizontal blanking (Fig.18) the output signal is set to reference black level and output clamping is activated. If the voltage exceeds the switch-off threshold, the signal is blanked and switched to ultra-black level for screen protection and spot suppression during V-flyback. handbook, full pagewidth 20 channel 1 17 channel 2 TDA4882 contrast BFQ235 6 14 current output 100 pF channel 3 PH2222 OSD fast blanking 1 kΩ 4.7 kΩ 220 Ω OSD signal input PH2222 150 Ω depending on channel gain 1 kΩ to 10 kΩ MHA816 Fig.3 OSD application. 1997 Sep 04 6 Philips Semiconductors Product specification Advanced monitor video controller for OSD TDA4882 8 LIMITING VALUES In accordance with the Absolute Maximum Rating System (IEC 134). SYMBOL Vext PARAMETER MIN. MAX. UNIT external DC voltage applied to the following pins: pin 7 (VP) 0 8.8 V pins 2, 5 and 8 (signal inputs) −0.1 VP V pins 20, 17 and 14 (current outputs) −0.1 VP V pins 12, 15 and 18 (channel feedback inputs) −0.1 +0.7 V pins 1, 6, 3 and 11 (brightness, contrast and gain control inputs) −0.1 VP V pin 9 (horizontal blanking input) −0.1 VP + 0.7 V pin 10 (input clamping input) −0.1 VP + 0.7 V Io(av) average output current (pins 20, 17 and 14); note 1 0 50 mA IOM peak output current (pins 20, 17 and 14) 0 100 mA Ptot total power dissipation − 1200 mW Tstg storage temperature −25 +150 °C Tamb operating ambient temperature −20 +70 °C Tj junction temperature −25 +150 °C VESD electrostatic handling for all pins; note 2 −500 +500 V Notes 1. Signal amplitude of 50 mA black-to-white is possible if the average current (including blanking times and signal variation against time) does not exceed 50 mA. The maximum power dissipation of 1200 mW has to be considered. 2. Equivalent to discharging a 200 pF capacitor through a 0 Ω series resistor. 9 THERMAL CHARACTERISTICS SYMBOL Rth(j-a) 1997 Sep 04 PARAMETER CONDITIONS thermal resistance from junction to ambient in free air 7 VALUE UNIT 65 K/W Philips Semiconductors Product specification Advanced monitor video controller for OSD TDA4882 10 CHARACTERISTICS VP = 8.0 V; Tamb = 25 °C; all voltages measured to GND (pin 4); note 1; see Fig.4; unless otherwise specified. SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT VP supply voltage 7.2 8.0 8.8 V IP supply current 36 48 60 mA Video signal inputs (channels 1, 2 and 3) Vi(b-w) input voltage, black-to-white − 0.7 1.0 V VI(clamp) DC voltage during input clamping (artificial black + VBE) 2.8 3.1 3.4 V II DC input current no clamping; Vi = VI(clamp); Tamb = −20 to +70 °C −0.05 +0.05 +0.25 0 µA during clamping; Vi = VI(clamp) + 0.7 V 50 75 120 µA during clamping; Vi = VI(clamp) − 0.7 V −120 −75 −50 µA Brightness control; note 2; Fig.5 Vi(BC) input voltage 1.0 − 6.0 V Ri(BC) input resistance 40 50 60 kΩ Vi(BC)(nom) input voltage for nominal brightness pin 1 open-circuit 2.0 2.25 2.5 V ∆Vbl black-level voltage change at Vi(BC) = 1.0 V voltage outputs referred to Vi(BC) = 6.0 V reference black level during output pin 1 open-circuit clamping (Vi(HBL) > 1.6 V) related to output signal amplitude with nominal 0.7 V (p-p) input signal and nominal contrast (Vi(CC) = 4.3 V) for any gain setting −13 −11 −9.5 % ∆VBT difference of ∆Vbl between any two channels 30 34 37 % − − 0.8 % −1.2 0 +1.2 % V Contrast control; note 3; Fig.6 Vi(CC) input voltage 1.0 − 6.0 Vi(CC)(max) maximum input voltage − − VP − 1 V Vi(CC)(nom) input voltage for nominal contrast note 4 − 4.3 − V Ii(CC) input current Vi(CC) = 4.3 V −5 −1 −0.1 µA C/Cnom contrast relative to nominal contrast Vi(CC) = 6.0 V; pins 3 and 11 open-circuit 2.4 3.4 − dB Vi(CC) = 1.0 V; pins 3 and 11 open-circuit −26 −22 −19 dB Vi(CC)(min) input voltage for minimum contrast pins 3 and 11 open-circuit − 0.7 − V ∆Gtrack tracking of output signals of channels 1, 2 and 3 1 V < Vi(CC) < 6 V; note 5 − 0 0.5 dB tdf(C) delay between leading (falling) edges of contrast voltage and voltage output waveforms Vi(CC) = 4.3 V to 0.7 V; input fall time at pin 6: tf(CC) = 2 ns; note 6; Fig.10 − 7 20 ns 1997 Sep 04 8 Philips Semiconductors Product specification Advanced monitor video controller for OSD SYMBOL PARAMETER CONDITIONS TDA4882 MIN. TYP. MAX. UNIT − 15 25 ns fall time of voltage output waveform 90% to 10% amplitude; input fall time at pin 6: tf(CC) = 2 ns; note 6; Fig.10 − 6 15 ns rise time of voltage output waveform − 6 15 ns 1.0 − 6.0 V 3.6 3.75 3.95 V 44 55 66 kΩ tdr(C) delay between trailing edges (rising) of contrast voltage and voltage output waveforms tf(C) tr(C) Vi(CC) = 0.7 V to 4.3 V; input rise time at pin 6: tr(CC) = 2 ns; note 6; Fig.10 10% to 90% amplitude; input rise time at pin 6: tr(CC) = 2 ns; note 6; Fig.10 Gain control (channel 1 and channel 3); note 7; Fig.7 Vi(GC) input voltage Vi(GC)(nom) input voltage for nominal gain Ri(GC) input resistance ∆G gain control difference relative to nominal gain (channels 1 and 3 only) pins 3 and 11 open-circuit Vi(CC) = 4.3 V; Vi(GC) = 6 V 2 2.6 3.3 dB Vi(CC) = 4.3 V; Vi(GC) = 1 V −5.5 −5 −4.5 dB Feedback input (channels 1, 2 and 3); note 8; Fig.8 Vref(int) internal reference voltage 5.6 5.8 6.1 V Io(FB)(max) maximum output current during output clamping; Vi(FB) = 3 V −500 −100 −60 nA ∆Vbl(CRT) black-level variation at CRT note 9 0 40 200 mV ∆Vref(T) variation of Vref(int) in the temperature range Tamb = −20 to +70 °C 0 20 50 mV ∆Vref(int)(VP) variation of Vref(int) with supply voltage 7.2 V ≤ VP ≤ 8.8 V 0 60 100 mV Voltage outputs (channels 1, 2 and 3) Vo(b-w)(nom) nominal signal output voltage (black-to-white value) pins 3 and 11 open-circuit; Vi(CC) = 4.3 V; Vi(b-w) = 0.7 V 0.69 0.79 0.89 V Vblx(max) maximum adjustable black-level voltage during output clamping; Tamb = −20 to +70 °C 1 1.2 1.4 V Vbl(SO) black-level voltage during switch-off, equal to minimum adjustable black-level voltage Vi(HBL) = VP; RO = 33 Ω; Tamb = −20 to +70 °C 30 45 100 mV Vbl(TST) black-level voltage during test mode Vi(HBL) = VP; Vi(CL) = VP; pin 1 open-circuit; Vi = VI(clamp); note 10 0.3 0.7 1.2 V S/N signal-to-noise ratio note 11 − 50 44 dB dO(th) output thermal distortion Io(b-w) = 50 mA; note 12 − 0.6 1 % ∆Vbl(fl) black-level variation between clamping pulses line frequency 30 kHz − 0.5 4.5 mV Voffset(max) maximum offset during sync clipping VI < VI(clamp); note 13; Fig.9 0 7 15 mV 1997 Sep 04 9 Philips Semiconductors Product specification Advanced monitor video controller for OSD SYMBOL ∆Vo(b-w)(T) PARAMETER variation of nominal output signal (black-to-white value) with temperature CONDITIONS pins 3 and 11 open-circuit; Vi(CC) = 4.3 V; Vi(b-w) = 0.7 V; Tamb = −20 to +70 °C TDA4882 MIN. TYP. MAX. UNIT 0 2.5 10 % − 50 − mA with peaking − − 100 mA V20-19; V17-16; start of HF-saturation voltage of V14-13 output transistors Io = 50 mA − − 2.0 V Io = 100 mA − − 2.2 V Ibl(SO) Vi(HBL) = VP; RO = 33 Ω 0 20 900 µA Current outputs (channels 1, 2 and 3); note 14 Io(b-w) output current (black-to-white value) output current during switch-off Frequency response at voltage outputs; note 15; Figs 11, 12 and 13 ∆G(f) gain decrease by frequency response 70 MHz; single channel − 1.3 3 dB tr(O) rise time at voltage output 10% to 90% amplitude; input rise time = 1 ns − 4.1 5.0 ns dVO overshoot of output signal pulse related to actual output pulse amplitude single channel; input rise time = 2.5 ns; Vi(b-w) = 0.7 V; pins 3 and 11 open-circuit; Vi(CC) = 4.3 V − 4 8 % − − −20 dB threshold for horizontal blanking (blanking, output clamping) 1.2 1.4 1.6 V threshold for switch-off (blanking, minimum black-level, no output clamping) 5.8 6.5 6.8 V Crosstalk at voltage outputs with speed up circuit; note 16; Figs 14, 15 and 16 αct(tr) transient crosstalk Threshold voltages for clamping, blanking and switch-off; note 17 Vi(HBL) Ri(HBL) input resistance against ground 50 80 110 kΩ td(Hblank) delay between horizontal blanking input and output signal blanking input rise time at pin 9 > 100 ns; note 18; Fig.18 − 40 60 ns Vi(CL) threshold for vertical blanking (blanking, no input clamping) note 19; Fig.17 1.2 1.4 1.6 V threshold for clamping (input clamping, no blanking) note 19; Fig.17 2.6 3.0 3.5 V threshold for test mode (no clamping, no blanking, see Vbl(TST) above) for test mode also Vi(HBL) > 6.8 V (switch-off) VP − 1 − VP V current Vi(CL) < VP − 1 V −3 −1 − µA Vi(CL) ≥ VP − 1 V − 100 − µA Ii(CL) 1997 Sep 04 10 Philips Semiconductors Product specification Advanced monitor video controller for OSD SYMBOL PARAMETER CONDITIONS TDA4882 MIN. TYP. MAX. UNIT tr(CL), tf(CL) rise and fall time for clamping pulse note 19; Fig.17 − − 75 ns/V tw(clamp) width of clamping pulse 0.6 − − µs td(Vblank) delay between vertical blanking input and internal blanking 260 320 380 ns note 19; Fig.17 Notes to the characteristics 1. Definition of levels: a) Artificial black level: internal signal level behind input emitter follower during input clamping and signal clipping. This level is inserted instead of the input signal during blanking. b) Reference black level: DC voltage during output clamping at voltage outputs, not influenced by brightness, contrast or gain setting, adjustable by cut-off stabilization. c) Cut-off level: corresponding DC voltage at CRT cathode in closed feedback loop. d) Black level: actual signal black level at either the voltage outputs or cathode, it can be adjusted by (brightness × gain), it refers to reference black level or cut-off level. e) Ultra-black level, switch-off level: lowest adjustable reference black level, lowest signal level at voltage outputs. f) The minimum guaranteed control range for reference black level is 0.1 to 1 V. The ultra-black level is dependent on the external resistor RO at pins 13, 16 and 19 (voltage outputs) to ground. Ro g) V bl(SO) ≈ ------------------------------- × 4.65 V 3.5 kΩ + R o 2. Linear control range is 1 to 6 V for Vi(BC), independent of supply voltage. 3. Linear control range is 1 to 6 V for Vi(CC), independent of supply voltage. Open pin 6 leads to maximum contrast setting. It is recommended not to exceed Vi(CC) = VP − 1 V to avoid saturation of internal circuitry. For Vi(CC) < Vi(CC)(min) ≈ 0.7 V a small negative signal (≈ −40 dB) will appear. For frequency dependency of contrast control see note 15. 4. Definition for nominal output signals: input Vi(b-w) = 0.7 V, gain pins 3 and 11 open-circuit, contrast control Vi(CC) = Vi(CC)(nom). 5. A 1 A 20 A 1 A 30 A 2 A 30 ∆G track = 20 × maximum of log --------- × --------- ; log --------- × --------- ; log --------- × --------- dB A 10 A 2 A 10 A 3 A 20 A 3 Ax: signal output amplitude in channel x at any contrast setting between 1 and 6 V. Ax0: signal output amplitude in channel x at nominal contrast and same gain setting. 6. Typical step in contrast voltage and response at signal outputs for nominal input signal Vi(b-w) = 0.7 V (OSD fast blanking input/output). 7. Linear control range is 1 to 6 V for Vi(GC), independent of supply voltage. 8. The internal reference voltage can be measured at pins 18, 15 and 12 (channel feedback inputs) during output clamping (Vi(HBL) = 2 V) in closed feedback loop. 9. Slow variations of video supply voltage VCRT (Fig.1) will be suppressed at CRT cathode by cut-off stabilization. Change of VCRT by 5 V leads to specified change of cut-off voltage. 10. The test mode allows testing without input and output clamping pulses. The signal inputs have to be biased via resistors to the previously measured clamp voltages of approximately 3 V (artificial black level + VBE). Signal and brightness blanking is not possible during test mode. The current outputs should be adjusted by resistors >> R0 from voltage outputs to a positive voltage (e.g. VP). 1997 Sep 04 11 Philips Semiconductors Product specification Advanced monitor video controller for OSD TDA4882 11. The signal-to-noise ratio is calculated by the formula (frequency range 1 to 70 MHz): peak-to-peak value of the nominal signal output voltage S ---- = 20 × log --------------------------------------------------------------------------------------------------------------------------------------------------- dB RMS value of the noise output voltage N 12. Large output swing e.g. Io(b-w) = 50 mA leads to signal-dependent power dissipation in output transistors. Thermal VBE variation is compensated. 13. Composite signals will not disturb normal operation because an internal clipping circuit cuts all signal parts below black level. 1 1 14. The output current approximately follows the equation I o = V o -------- + ------------------ – 500 µA for Vo > Vbl(SO) and with R O 2.2 kΩ RO = external resistor at voltage output to ground. The external RC combination (Fig.1) at pins 19, 16 and 13 (voltage outputs) enables peak currents during transients. 15. Frequency response, crosstalk and pulse response have been measured at voltage outputs on a special printed-circuit board with 50 Ω line in/out connections and without peaking, see Chapter 11. 16. Crosstalk between any two voltage outputs (e.g. channels 1 and 2). a) Input conditions: one channel (channel 1) with nominal input signal and minimum rise time. The inputs of the other channels capacitively coupled to ground (channels 2 and 3). Gain pins 3 and 11 open-circuit. b) Output conditions: output signal of channel 1 is set by contrast control voltage, to Vo(b-w) = Vo(VOUT1) = 0.7 V, the rise time should be 5 ns. Output signal of channel 2 then is Vo(b-w) = Vo(VOUT2). V o(VOUT2) c) Transient crosstalk: α ct(tr) = 20 × log ------------------------ dB V o(VOUT1) d) Crosstalk as a function of frequency has been measured without peaking circuit, with nominal input signal and nominal settings. 17. The internal threshold voltages are derived from a stabilized voltage. The internal pulses are generated while the input pulses are higher than the thresholds. Voltages less than −0.1 V at pins 9 and 10 can influence black-level control and should be avoided. 18. The delay between HBL input pulse (horizontal blanking) and output signal blanking pulse and also brightness blanking (∆Vbl), at the voltage outputs, depends on the input rise time of the HBL pulse. The specified values for td(Hblank) are valid for HBL rise times greater than 100 ns only. 19. For 75 ns/V < tr(CL), tf(CL) < 240 ns/V, generation of internal input clamping and blanking pulse is not defined. Pulses not exceeding the threshold of input clamping (typical 3 V) will be detected as blanking pulses. 1997 Sep 04 12 Philips Semiconductors Product specification Advanced monitor video controller for OSD TDA4882 video signal input signals handbook, full pagewidth black level equal to artificial black level + VBE by input clamping (approximately 3 V) input signal at pins 2, 5 and 8 with sync (on green) input clamping pulse at pin 10 horizontal blanking and output clamping pulse at pin 9 horizontal flyback and output clamping video portion black level equal to artificial black level by input clamping and storage by coupling capacitor internal signal behind input stage sync clipping to artificial black level inserted artificial black level output signals (pins 19, 16 and 13) max. at nominal gain and contrast setting and maximum/nominal/ minimum brightness setting min. nom. ∆ black level due to brightness setting reference black level brightness is set to nominal value during horizontal blanking max. nom. at nominal gain and maximum brightness setting and maximum/nominal/ minimum contrast setting min. max. ∆ black level for maximum brightness reference black level nom. at nominal contrast and maximum brightness setting and maximum/nominal/ minimum gain setting min. grey scale reference black level ultra black level ground high tension supply voltage (e.g. 90 V) (raster) cut-off level signal at CRT cathode black level at nominal gain and contrast setting and maximum brightness setting grey scale MHA817 Fig.4 Signal processing. 1997 Sep 04 13 Philips Semiconductors Product specification Advanced monitor video controller for OSD MHA818 50 handbook, halfpage 400 ∆Vbl (%) MHA819 1400 handbook, halfpage 4 signal amplitude (mV) (mV) 40 TDA4882 300 30 2 1000 800 1 0 −1 600 −3 200 20 100 10 0 −10 (dB) 3 0 400 −100 200 −20 −5 −10 −20 −40 0 −200 −30 0 2 2.24 4 6 −200 8 0 Vi (BC) Fig.5 Typical brightness characteristic. 4 6 4.3 8 Vi(CC) (V) Fig.6 Typical contrast characteristic. MHA821 1200 2 0.7 handbook, halfpage MHA822 5.85 handbook, halfpage 3 (dB) 5.84 Vref(int) (V) 5.83 signal amplitude (mV) 2 800 0 5.82 −1 5.81 400 −2 −3 −4 −5 −6 1 VP = 8.8 V 8.0 V 5.80 5.79 5.78 −8 7.2 V 5.77 5.76 0 0 2 4 3.75 6 5.75 −20 8 Vi(GC) (V) 0 20 40 60 80 100 Tamb (°C) Conditions: 0.5 V reference black level, no signal. Fig.8 Fig.7 Typical gain characteristic. 1997 Sep 04 14 Typical variation of Vref(int) with temperature and supply voltage. Philips Semiconductors Product specification Advanced monitor video controller for OSD TDA4882 handbook, full pagewidth input signal output signal Voffset(max) MHA823 Fig.9 Typical sync clipping. handbook, full pagewidth OSD pulse at pin 6 (V) tf(CC) tr(CC) 4.3 90% 50% 10% 0.7 t output signal at pins 19, 16 and 13 (V) tdf(C) tdr(C) Vbl + Vo(b-w) = 1.5 90% Vo(b-w) 50% 10% Vbl = 0.7 t tf(C) tr(C) MHA820 Fig.10 Typical OSD fast blanking input/output waveforms. 1997 Sep 04 15 Philips Semiconductors Product specification Advanced monitor video controller for OSD TDA4882 MHA825 800 handbook, full pagewidth input pulse (mV) 90% 600 400 tr ≈ 2.5 ns tf ≈ 2.5 ns 200 10% 0 1000 output pulse (mV) 800 90% 600 400 tf ≈ 4.8 ns tr ≈ 4.4 ns 200 10% 0 −200 0 20 40 60 80 t (ns) 100 Solid line: single channel. Dotted line: white pattern. Fig.11 Typical pulse response: VIN1, VIN2 and VIN3 → VOUT1, VOUT2 and VOUT3. 1997 Sep 04 16 Philips Semiconductors Product specification Advanced monitor video controller for OSD TDA4882 MHA824 3 handbook, full pagewidth signal (dB) 0 −3 −6 −9 −12 −15 1 102 10 f (MHz) 103 Solid line: single channel. Dotted line: white signal. Fig.12 Typical frequency response. MHA826 10 handbook, full pagewidth Vi(cc) = 7V signal (dB) 6V 5V 0 4V 3V 2V −10 Vi(cc) = 0.7 V −20 1V −30 Vi(cc) = 0.7 V 1 10 70 102 120 f (MHz) Solid line: single channel. Dotted line: white signal. Fig.13 Typical characteristic of contrast control as a function of frequency. 1997 Sep 04 17 103 Philips Semiconductors Product specification Advanced monitor video controller for OSD TDA4882 MHA827 handbook, full pagewidth 0 channel(1) signal (dB) 1 −10 −20 2 3 −30 −40 1 102 10 f (MHz) 103 (1) Solid line: channel 1. Dashed line: channel 2. Dotted line: channel 3. Fig.14 Typical crosstalk: channel 1 → 2 and 3. MHA828 handbook, full pagewidth 0 channel(1) signal (dB) 2 −10 −20 3 −30 1 −40 1 102 10 (1) Solid line: channel 1. Dashed line: channel 2. Dotted line: channel 3. Fig.15 Typical crosstalk: channel 2 → 1 and 3. 1997 Sep 04 18 f (MHz) 103 Philips Semiconductors Product specification Advanced monitor video controller for OSD TDA4882 MHA829 handbook, full pagewidth 0 channel(1) signal (dB) 3 −10 −20 1 −30 2 −40 1 102 10 103 f (MHz) (1) Solid line: channel 1. Dashed line: channel 2. Dotted line: channel 3. Fig.16 Typical crosstalk: channel 3 → 1 and 2. handbook, full pagewidth 3V Vi(CL) 1.4 V t internal pulses input clamping tr(CL) tf(CL) no clamping ≈ 1/2 td(Vblank) no clamping t td(Vblank) blanking t MHA831 Fig.17 Timing of pulses at CL (pin 10). 1997 Sep 04 19 Philips Semiconductors Product specification Advanced monitor video controller for OSD handbook, full pagewidth td (ns) TDA4882 HBL pulse (V) 80 1.45 70 0.2 t 60 tr 50 td(Hblank) output signal (V) td(Hblank) 40 td(4) 0.74(1) 30 ∆Vbl td(4) 20 0.5(2) 20 (1) (2) (3) (4) 50% of ∆Vbl 40 60 80 100 120 140 tr,tf(3) (ns) t MHA830 Black level: 0.74 V. Reference black level: 0.5 V. Rise and fall times for HBL between 0.2 and 1.45 V. td is the delay at the end of brightness blanking. Fig.18 Typical delay between HBL pulse and brightness blanking at voltage outputs. 1997 Sep 04 20 Philips Semiconductors Product specification Advanced monitor video controller for OSD TDA4882 DC control for brightness, contrast and gain is provided at connectors P21 and P22. Contrast control can also be set by the potentiometer R28 (jumper J11). The series resistor R11 is necessary if fast OSD switching is activated via 50 Ω line (P10), a line termination can be provided at the connector P9. Clamping and blanking pulses are fed to the IC via connectors P7 and P8. Connector P23 is used for power supply. The capacitors C7 and C8 should be located as near as possible to the IC pins. 11 APPLICATION AND TEST INFORMATION For high frequency measurements and special application, a printed-circuit board with only a few external components is built. Figure 19 shows the application circuit and Fig.20 the layout of the double sided printed board. All components on the underside and R13, R14 and R15 on the top are SMD types. Short HF loops and minimum crosstalk between the channels as well as input and output are achieved by properly shaped ground areas star connected to the IC ground pin. 11.1 The HF input signal can be fed to the subclick connectors P1, P2 and P3 by a 50 Ω line. The line is then terminated by a 51 Ω resistor on the board. With choice of jumper connections (J1, J2 and J3) it is possible to connect channel inputs to its input connector, to connect all channels to one input connector (white pattern) and to ground each input via the coupling capacitor. Recommendations for building the application board • General – Double-sided board – Short HF loops by large ground plane on the rear. • Voltage outputs – Capacitive loads as small as possible For operation without input clamping, e.g. test mode, the DC bias can be provided by VIDC (connector P21) if a short-circuit at J4, J5 and J6 is made (solder short or low-value SMD resistor). – Short interconnection via resistor to ground. • Supply voltage – Capacitors as near as possible to the pins The output signal can be monitored via 50 Ω terminated lines at the voltage outputs (subclick connectors P4, P5 and P6). With 100 Ω in parallel to the 50 Ω terminated line the effective load resistance at the voltage outputs is 33 Ω. The mismatch seen from the line towards the IC has no significant effect if the line is match terminated. A peaking circuit, C15, R16 for channel 1 (C16, R17 for channel 2 and C17, R18 for channel 3), can be added for realistic loading of the voltage outputs. – Use of high-frequency capacitors (low self inductance, e.g. SMD). • Resonance suppression. The external interconnection inductance to the current outputs can build a resonance together with the internal substrate capacitance. A damping resistor of 10 to 30 Ω near to the IC pin can suppress such oscillations. Black-level adjustment is made by VIOS, VFBX (external voltages at connector P21) and resistors R19, R22 and R25 for channel 1 (channel 2: R20, R23 and R26; channel 3: R21, R24 and R27). If R19 is equal to the effective load resistor at the voltage output the reference black level (Vref(bl)) is approximately: R22 V ref(bl) = VIOS – V ref(int) – ( V ref(int) – VFBX ) × ----------R25 Vref(int) is the internal reference voltage at the feedback input (typical 5.8 V). By this it is possible to adjust the reference black level and the voltage at the current outputs independently. 1997 Sep 04 21 Philips Semiconductors Product specification Advanced monitor video controller for OSD TDA4882 subclick connector (50 Ω) handbook, full pagewidth solder point for short-circuiting or SMD 0 Ω resistor BC/GC2 jumper connector GND (sense) GC1 VIDC VFBX VIOS P21 C30 220 µF (25 V) R7 C29 2.2 µF C28 100 nF C27 22 nF (multi-layer) 110 Ω C4 100 nF IC1 BC/GC2 1 R19 IOUT1 20 33 Ω C5 22 nF Vi(b-w) J1 C1 22 nF VIN1 P1 C15 47 pF R4 5.1 kΩ GC1 C12 22 nF J2 C2 22 nF VIN2 P2 CC C13 22 nF C3 22 nF P3 4 17 C18 22 nF R20 IOUT2 33 Ω C22 22 nF 16 C16 47 pF 6 15 R17 R14 100 Ω R23 3 kΩ 33 Ω FB2 R26 14 7 C19 22 nF R21 IOUT3 33 Ω C7 1 nF VIN3 HBL C14 22 nF C23 22 nF C26 100 nF P6 VOUT3 13 8 C17 47 pF R6 5.1 kΩ C25 100 nF P5 VOUT2 5 J6 R3 51 Ω R25 9.1 kΩ VP J3 R22 3 kΩ 9.1 kΩ TDA4882 R5 5.1 kΩ C8 100 nF R13 100 Ω 33 Ω FB1 18 J5 R2 51 Ω Vi(b-w) 3 R16 C6 22 nF GND Vi(b-w) 19 J4 R1 51 Ω C24 100 nF P4 VOUT1 2 C21 22 nF 12 9 R18 R15 100 Ω R24 3 kΩ 33 Ω FB3 R27 9.1 kΩ C20 22 nF P22 CL GC3 GC3 11 10 C11 22 nF CC C10 100 nF R8 1 kΩ R9 1 kΩ C31 10 µF R10 1 kΩ L1 100 µH C9 100 nF R12 R11 J10 J11 1 kΩ P7 P23 HBL P9 P8 CL GND (power) VP VP (sense) GND (sense) P10 OSD MHA832 Fig.19 Application circuit for test PCB. 1997 Sep 04 1 kΩ R28 10 kΩ 22 Philips Semiconductors Product specification Advanced monitor video controller for OSD TDA4882 handbook, full pagewidth C30 C29 P22 R28 J11 J10 P4 P5 P6 P10 R13 R15 R14 P9 C31 IC1 L1 P23 R7 P21 P8 J1 J2 J3 P7 P2 P1 R1 P3 R2 R3 R4 C12 C1 R8 R5 C14 R6 C2 C3 C13 J4 J5 C4 C5 C6 R22 C8 R23 J6 C7 R24 R19 C15 R25 R20 C16 R26 R21 C24 C22 C18 C9 C11 C25 R27 C23 C19 C26 R10 C17 R18 R17 R16 C21 R9 C20 R11 R12 C28 C27 C10 MHA833 Fig.20 Double sided test PCB layout. 1997 Sep 04 23 Philips Semiconductors Product specification Advanced monitor video controller for OSD TDA4882 12 INTERNAL PIN CONFIGURATION handbook, full pagewidth 20 19 18 17 16 15 CL 14 CL 13 12 11 CL TDA4882 CL CL CL + 1 2 3 4 5 6 7 8 10 MED911 + pin pin diode protection on all pins except pins 4 and 7 zener diode protection at pin 7 Fig.21 Internal pin configuration. 1997 Sep 04 9 24 Philips Semiconductors Product specification Advanced monitor video controller for OSD TDA4882 13 PACKAGE OUTLINE DIP20: plastic dual in-line package; 20 leads (300 mil) SOT146-1 ME seating plane D A2 A A1 L c e Z b1 w M (e 1) b MH 11 20 pin 1 index E 1 10 0 5 10 mm scale DIMENSIONS (inch dimensions are derived from the original mm dimensions) UNIT A max. A1 min. A2 max. b b1 c mm 4.2 0.51 3.2 1.73 1.30 0.53 0.38 0.36 0.23 26.92 26.54 inches 0.17 0.020 0.13 0.068 0.051 0.021 0.015 0.014 0.009 1.060 1.045 D e e1 L ME MH w Z (1) max. 6.40 6.22 2.54 7.62 3.60 3.05 8.25 7.80 10.0 8.3 0.254 2.0 0.25 0.24 0.10 0.30 0.14 0.12 0.32 0.31 0.39 0.33 0.01 0.078 (1) E (1) Note 1. Plastic or metal protrusions of 0.25 mm maximum per side are not included. OUTLINE VERSION SOT146-1 1997 Sep 04 REFERENCES IEC JEDEC EIAJ SC603 25 EUROPEAN PROJECTION ISSUE DATE 92-11-17 95-05-24 Philips Semiconductors Product specification Advanced monitor video controller for OSD The device may be mounted up to the seating plane, but the temperature of the plastic body must not exceed the specified maximum storage temperature (Tstg max). If the printed-circuit board has been pre-heated, forced cooling may be necessary immediately after soldering to keep the temperature within the permissible limit. 14 SOLDERING 14.1 Introduction There is no soldering method that is ideal for all IC packages. Wave soldering is often preferred when through-hole and surface mounted components are mixed on one printed-circuit board. However, wave soldering is not always suitable for surface mounted ICs, or for printed-circuits with high population densities. In these situations reflow soldering is often used. 14.3 Repairing soldered joints Apply a low voltage soldering iron (less than 24 V) to the lead(s) of the package, below the seating plane or not more than 2 mm above it. If the temperature of the soldering iron bit is less than 300 °C it may remain in contact for up to 10 seconds. If the bit temperature is between 300 and 400 °C, contact may be up to 5 seconds. This text gives a very brief insight to a complex technology. A more in-depth account of soldering ICs can be found in our “IC Package Databook” (order code 9398 652 90011). 14.2 TDA4882 Soldering by dipping or by wave The maximum permissible temperature of the solder is 260 °C; solder at this temperature must not be in contact with the joint for more than 5 seconds. The total contact time of successive solder waves must not exceed 5 seconds. 15 DEFINITIONS Data sheet status Objective specification This data sheet contains target or goal specifications for product development. Preliminary specification This data sheet contains preliminary data; supplementary data may be published later. Product specification This data sheet contains final product specifications. Limiting values Limiting values given are in accordance with the Absolute Maximum Rating System (IEC 134). Stress above one or more of the limiting values may cause permanent damage to the device. These are stress ratings only and operation of the device at these or at any other conditions above those given in the Characteristics sections of the specification is not implied. Exposure to limiting values for extended periods may affect device reliability. Application information Where application information is given, it is advisory and does not form part of the specification. 16 LIFE SUPPORT APPLICATIONS These products are not designed for use in life support appliances, devices, or systems where malfunction of these products can reasonably be expected to result in personal injury. Philips customers using or selling these products for use in such applications do so at their own risk and agree to fully indemnify Philips for any damages resulting from such improper use or sale. 1997 Sep 04 26 Philips Semiconductors Product specification Advanced monitor video controller for OSD NOTES 1997 Sep 04 27 TDA4882 Philips Semiconductors – a worldwide company Argentina: see South America Australia: 34 Waterloo Road, NORTH RYDE, NSW 2113, Tel. +61 2 9805 4455, Fax. +61 2 9805 4466 Austria: Computerstr. 6, A-1101 WIEN, P.O. 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The information presented in this document does not form part of any quotation or contract, is believed to be accurate and reliable and may be changed without notice. No liability will be accepted by the publisher for any consequence of its use. Publication thereof does not convey nor imply any license under patent- or other industrial or intellectual property rights. Printed in The Netherlands 547047/1200/02/pp28 Date of release: 1997 Sep 04 Document order number: 9397 750 02268