INTEGRATED CIRCUITS DATA SHEET TDA8443A I2C-bus controlled YUV/RGB switch Product specification Supersedes data of November 1992 File under Integrated Circuits, IC02 Philips Semiconductors 1995 Mar 07
Philips Semiconductors Product specification I2C-bus controlled YUV/RGB switch TDA8443A FEATURES • Two RGB/YUV selectable clamped inputs with associated synchronization • RGB/YUV matrix • 3-state switching with an OFF-state • Selectable gain • I2C-bus or non-I2C-bus mode • Address selection for 7 devices • Fast switching. GENERAL DESCRIPTION The TDA8443A is a general purpose two-channel switch for YUV or RGB signals. One channel provides matrixing from RGB to YUV, which can be bypassed.
Philips Semiconductors Product specification I2C-bus controlled YUV/RGB switch TDA8443A BLOCK DIAGRAM outputs handbook, full pagewidth SDA SCL S0 13 14 15 S1 S2 16 VP 17 18 I 2C-BUS INTERFACE/ DECODER TDA8443A B/ (B Y) input G/Y input 19 R/ (R Y) SYNC input GND output 20 A4 21 A3 A2 22 clamp pulse generator 23 24 A1 FAST SWITCHING B3 B2 B1 MATRIX RGB/YUV CLAMP PULSE GENERATOR 9 8 CLAMP CLAMP CLAMP 12 11 10 ON B/ (B Y) input input SYNC1 G/Y input R/ (R Y) input
Philips Semiconductors Product specification I2C-bus controlled YUV/RGB switch TDA8443A PINNING SYMBOL PIN DESCRIPTION SEL 1 select input (non-I2C-bus mode only) SYNC2 2 synchronization input for Channel 2 FS 3 fast switching input R/±(R−Y)IN 4 R or (R−Y) signal input G/Y IN 5 G or Y signal input B/±(B−Y)IN 6 B or (B−Y) signal input VINT 7 internal voltage supply SYNC1 8 synchronization input for Channel 1 ON 9 ON input R/−(R−Y)IN 10 R or −(R−Y) signal input G/Y IN 11
Philips Semiconductors Product specification I2C-bus controlled YUV/RGB switch TDA8443A FUNCTIONAL DESCRIPTION I2C-bus mode The circuit contains two sets of inputs (see Fig.1). Both channels can receive RGB or YUV signals. Each set of inputs has its own synchronization input, which internally generates a pulse to clamp the inputs. The internal clamping pulse can also be controlled by a signal (e.g. a sandcastle pulse) applied to pin 24.
Philips Semiconductors Product specification I2C-bus controlled YUV/RGB switch Table 2 TDA8443A Address selection ADDRESS SELECT PINS(1)(2) S2 (PIN 17) S1 (PIN 16) ADDRESS SELECT BITS S0 (PIN 15) MA2 MA1 MA0 L L ∗(3) ∗(3) ∗(3) L L H 0 0 1 L H L 0 1 0 L H H 0 1 1 H L L 1 0 0 H L H 1 0 1 H H L 1 1 0 H H H 1 1 1 L Notes 1. L = LOW level input voltage. 2. H = HIGH level input voltage. 3. ∗ = non-I2C-bus operation.
Philips Semiconductors Product specification I2C-bus controlled YUV/RGB switch Table 5 TDA8443A Priority/fast switching bit D2 D2 FAST SWITCHING (PIN 3) 0 X(1) 1 0.4 V Table 6 MODE 0 to 2, depending on D7, D6 2 Output state control bits D1 D0 PIN 9 FUNCTION 0 X(1) X(1) OFF 1 0 L OFF 1 0 H ON 1 X(1) ON 1 Note Note 1. X = don't care. 1. X = don't care. Power-on reset If the circuit is switched on in the I2C-bus mode, all bits of D0 to D7 are set to zero.
Philips Semiconductors Product specification I2C-bus controlled YUV/RGB switch TDA8443A LIMITING VALUES In accordance with the Absolute Maximum System (IEC 134). SYMBOL PARAMETER MIN. MAX. UNIT VP supply voltage (pin 18) − 14 V VI(SDA) input voltage (pin 13) −0.3 14 V VI(SCL) input voltage (pin 14) −0.3 14 V Vn input voltage any other pin −0.3 VP + 0.
Philips Semiconductors Product specification I2C-bus controlled YUV/RGB switch SYMBOL PARAMETER TDA8443A CONDITIONS MIN. TYP. MAX. UNIT R−Y = 1.05 V (p-p) − − 10 % B−Y = 1.33 V (p-p) − − 10 % Y = 0.34 V (p-p) − − 10 % signal-to-noise ratio nominal input; B = 5 MHz; note 2 50 − − dB SVRR supply voltage ripple rejection note 3 VO DC output levels during clamping Gdiff(p-p) S/N differential gain at nominal output signals (peak-to-peak value) 30 − − dB − 5.
Philips Semiconductors Product specification I2C-bus controlled YUV/RGB switch SYMBOL TDA8443A PARAMETER CONDITIONS MIN. TYP. MAX. UNIT Select input VIH HIGH level input voltage 3 − VP V VIL LOW level input voltage −0.3 − 0.4 V IIH HIGH level input current − 0 10 µA IIL LOW level input current −50 −10 0 µA VIH HIGH level input voltage 3 − VP V VIL LOW level input voltage −0.3 − 1.
Philips Semiconductors Product specification I2C-bus controlled YUV/RGB switch TDA8443A TIMING CHARACTERISTICS I2C-bus load conditions: 4 kΩ pull-up resistor to +5 V; 200 pF capacitor to GND; all values are referenced to VIH = 3 V and VIL = 1.5 V; see Fig.4. SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. tBUF time bus must be free before start 4.7 − µs tSU;STA set-up time for start condition 4.7 − µs tHD;STA hold time for start condition 4.0 − µs tLOW SCL and SDA LOW time 4.
Philips Semiconductors Product specification I2C-bus controlled YUV/RGB switch TDA8443A handbook, full pagewidth fast switching input signal switching delay 90 % output signal (YUV) 50 % 10 % MLD006 switching time Fig.5 Fast switching signal diagram.
Philips Semiconductors Product specification I2C-bus controlled YUV/RGB switch TDA8443A APPLICATION INFORMATION Table 10 Channel input/output information INPUT 1 INPUT 2 Y = 0.34 V U = −1.33 V V = −1.05 V − U = −1.33 V V = −1.05 V R = 0.75 V Y = 0.34 V G = 0.75 V U = −1.33 V B = 0.75 V V = −1.05 V S = 0.3 V S = 0.6 V Y = 0.34 V Y = 0.68 V U = −2.66 V − S = 0.3 V − V = −1.05 V Y = 0.68 V G = 0.75 V U = −2.66 V B = 0.75 V V = −2.10 V S = 0.3 V S = 0.6 V − U = −1.33 V V = −1.
Philips Semiconductors Product specification I2C-bus controlled YUV/RGB switch TDA8443A outputs handbook, full pagewidth SDA SCL S0 S1 VP S2 (B Y) outputs Y (R Y) GND SYNC CLAMP 4.7 kΩ 1 nF 13 14 15 16 17 18 19 20 21 22 23 24 5 4 3 2 1 TDA8443A 12 11 47 nF (B Y) 10 47 nF Y 9 7 4.7 µF 47 nF (R Y) 8 ON SYNC1 6 22 nF internal voltage 47 nF 47 nF B G 7 channel 1 (colour decoder) 9 8 R 11 10 13 12 4.7 µF 47 nF FS 15 14 16 17 SYNC2 Fig.
Philips Semiconductors Product specification I2C-bus controlled YUV/RGB switch TDA8443A When the synchronization pulse is over, the current source is switched off and the voltage at pin 24 will rise to its higher level. Because of the time constant at pin 24, the restoration will take some microseconds. The voltage at pin 24 is also sensed internally and at the time it is between 0.456VP and 0.544VP, a time pulse is generated and used for the clamping action.
Philips Semiconductors Product specification I2C-bus controlled YUV/RGB switch TDA8443A PACKAGE OUTLINE seating plane DIP24: plastic dual in-line package; 24 leads (600 mil) SOT101-1 ME D A2 L A A1 c e Z b1 w M (e 1) b MH 13 24 pin 1 index E 1 12 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 D (1) E (1) e e1 L ME MH w Z (1) max. mm 5.1 0.51 4.0 1.7 1.3 0.53 0.38 0.32 0.23 32.0 31.
Philips Semiconductors Product specification I2C-bus controlled YUV/RGB switch TDA8443A SOLDERING REPAIRING SOLDERED JOINTS Plastic dual in-line packages Apply a low voltage soldering iron below the seating plane (or not more than 2 mm above it). If its temperature is below 300 °C, it must not be in contact for more than 10 s; if between 300 and 400 °C, for not more than 5 s.
Philips Semiconductors Product specification I2C-bus controlled YUV/RGB switch TDA8443A NOTES 1995 Mar 07 18
Philips Semiconductors Product specification I2C-bus controlled YUV/RGB switch TDA8443A NOTES 1995 Mar 07 19
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