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| MITSUBISHI ICs (Monitor) M52721SP WIDEBAND VIDEO PREAMPLIFIER WITH OSD MIX DESCRIPTION The M52721SP is a wideband video preamplifier with 200MHz band. PIN CONFIGURATION (TOP VIEW) FEATURES CAP REF.C F.B.C GND 1 VIDEO IN VCC1 CONTRAST CLAMP HOLD OSD.C 1 2 3 4 5 6 7 8 9 20 OSD BLK IN 19 OSD MIX IN 18 OSD ADJUST 17 GND 3 16 VIDEO OUT 15 VCC3 14 VCC2 13 F/B+ 12 GND 2 11 F/B- * * * * * * Input:0.7VP-P (Typical), Output:7VP-P (Maximum) Maximum gain:20dB Frequency band:200MHz (-3dB) Contrast control (0 to 5VDC) Brightness control (0 to 5VDC) Built-in OSD MIX circuit M52721SP APPLICATION Display monitor RECOMMENDED OPERATING CONDITION Supply voltage range....................................................11.5 to 12.5V Rated supply voltage................................................................12.0V Operating temperature..............................................-20 C to +85C Circuit current...........................................................................60mA CLAMP+ IN 10 Outline 20P4B BLOCK DIAGRAM OSD BLK IN 20 OSD MIX IN 19 OSD ADJUST 18 GND 3 17 VIDEO OUT 16 VCC3 15 VCC2 14 F/B+ 13 GND 2 12 F/B- 11 + - CONTRAST AMP BRIGHTNESS AMP CLAMP 1 CAP 2 REF.C 3 F.B.C 4 GND 1 5 VIDEO IN 6 VCC1 7 CONTRAST 8 CLAMP HOLD 9 OSD.C 10 CLAMP+ IN 1 MITSUBISHI ICs (Monitor) M52721SP WIDEBAND VIDEO PREAMPLIFIER WITH OSD MIX ABSOLUTE MAXIMUM RATINGS (Ta=25C, unless otherwise noted) Symbol VCC Pd Topr Tstg Vopr Vopr' Surge Parameter Supply voltage Power dissipation Operating temperature Storage temperature Recommended operating supply voltage Recommended operating supply voltage range Ratings 13.0 1524 -20 to +85 -40 to +150 12.0 11.5 to 12.5 200 Unit V mW C C V V V Electrostatic discharge ELECTRICAL CHARACTERISTICS (Ta=25C, VCC=12V, unless otherwise noted) Test conditions External supply Input Test voltage (V) SWA point V7 V11 V18 SW10 SW5 Con- Bright- OSD Clamp trast ness Adj A a b 5.0 3.0 5.0 c T.P16 T.P16 T.P16 T.P16 T.P16 T.P16 T.P16 T.P16 T.P16 T.P16 T.P16 T.P16 T.P16 T.P16 T.P16 T.P16 T.P16 T.P16 T.P16 T.P16 b b b b b b b b b b b b b b b b b b b b a SG8 a SG8 a SG8 a SG8 a SG8 b b b a SG2 a SG3 a SG5 a SG5 b b b b b a SG8 b b 5.0 2.5 5.0 2.5 1.0 5.0 5.0 5.0 2.5 2.5 4 4 4 4 4 4 4 4 4 4 0.5 0.5 2.0 2.0 2.0 1.0 2.0 3.0 open open 2.4 2.4 2.4 2.4 2.4 2.4 2.4 2.4 2.4 2.4 0 0 0 0 0 0 0 0 0 0 0 0 0 0 4 4 4 4 4 2 a SG6 a SG6 a SG6 a SG6 a SG6 a SG6 a SG6 a SG6 c c a SG6 a SG6 a SG6 a SG6 Limits Unit SW19 SW20 Pulse OSD OSD MIX BLK b b b b b b b b b b b b b b b b b b b b b b b b b b b b b b b b b Min. 40 8.0 - 17.0 13.0 5.0 0.6 1.6 2.6 -1 -3 - - 1.9 0.7 - - 2.2 2.8 5.9 2.9 Symbol Parameter Typ. 52 8.9 0.7 20.0 15.0 7.2 1.0 2.0 3.0 0 -2 2.0 1.5 2.0 0.8 5.0 5.0 2.3 2.9 6.3 3.3 Max. 64 11.5 1.0 23.0 17.0 9.1 1.4 2.4 3.4 3 3 5.0 5.0 5.0 - 10.0 10.0 5.0 5.0 6.8 3.7 mA VP-P VP-P dB dB dB VDC VDC VDC dB dB nsec nsec VDC sec nsec nsec VDC VDC VP-P VP-P ICC Vomax Vimax Gv VCR1 VCR2 VB1 VB2 VB3 F1-a F2-a Tr Tf V10th W10 OTr OTf V19th V20th Oaj1 Oaj2 Circuit current Output dynamic range Maximum allowable input Maximum gain Contrast control characteristics 1 Contrast control characteristics 2 Brightness control characteristics 1 Brightness control characteristics 2 Brightness control characteristics 3 Frequency characteristics 1-a f=100MHz Frequency characteristics 2-a f=200MHz Pulse characteristics (rise time) Pulse characteristics (fall time) Clamp pulse threshold voltage Clamp pulse minimum width OSD pulse characteristics (rise time) OSD pulse characteristics (fall time) OSD input threshold voltage BLK input threshold voltage OSD adjust control characteristics 1 OSD adjust control characteristics 2 a a SG6 SG7 a a SG6 SG7 a a SG6 SG7 a a b SG6 SG7 a a b SG6 SG7 a a b SG6 SG7 2 MITSUBISHI ICs (Monitor) M52721SP WIDEBAND VIDEO PREAMPLIFIER WITH OSD MIX ELECTRICAL CHARACTERISTICS TEST METHOD ICC Circuit current When there is no signal, fix SWA on side "a", and measure I CC, using ampere meter A. Vomax Output dynamic range Input SG8 to pin 5, and set V11 at 0.5V (V) VB2 Brightness control characteristics 2 Set brightness (V11) at 2.0V, and measure the output of TP16 with a voltmeter. This value is VB2. VB3 Brightness control characteristics 3 Set brightness (V11) at 3.0V, and measure the output of TP16 with a voltmeter. This value is VB3. F1-a Frequency characteristics 1-a f=100MHz 9.0 F2-a Frequency characteristics 2-a f=200MHz With zero resistance between pins 13 and 16, apply a DC voltage to pin 5 so that the bottom of the input waveform reaches 2.6V. Next, apply a DC voltage to pin 8 so that the bottom of the output waveform reaches 2.4V. Input SG1 and measure the amplitude of TP16 output (V 01). Input SG2 and measure the amplitude of TP16 output (V 02). TP16 OUTPUT WAVEFORM 0.0 Input SG3 and measure the amplitude of TP16 output (V 03). F1-a and F2-a are determined by: Gradually increase the amplitude of SG8 from 700mV, and measure the amplitude of the TP16 output waveform when the upper side of the waveform becomes distorted. F1-a=20LOG V02 [VP-P] [dB] V01 [VP-P] V03 [VP-P] [dB] V01 [VP-P] F2-a=20LOG Vimax Maximum allowable input From the condition in Vomax above, change V7 to 2.5V, gradually increase the amplitude of SG8 from 700mV P-P, and read the input signal amplitude when the output signal starts to be distorted. Gv Maximum gain Read the amplitude of TP16 output: it should be taken as V 0. The maximum gain GV is determined by: V0 [VP-P] [dB] GV=20LOG 0.7 [VP-P] Tr Pulse characteristics (rise time) Tf Pulse characteristics (fall time) 1. Measure the rise time Tr1 and fall time Tf1 between 10 and 90% of the input pulse with an active probe. 2. Next, measure the rise time Tr2 and fall time Tf2 between 10 and 90% of the output pulse with an active probe. Tr (nsec)= (Tr2)2-(Tr1)2 Tf (nsec)= (Tf2)2-(Tf1)2 VCR1 Contrast control characteristics 1 Set V7 at 2.5V, and read the amplitude of TP16 output: it should be taken as V01. V01 [VP-P] [dB] VCR1=20LOG 0.7 [VP-P] V10th Clamp pulse threshold voltage While monitoring the output (approx. 2.4V DC), decrease the SG6 pulse width gradually and measure the SG6 amplitude when the output reaches 2.4V or more. W10 Clamp pulse minimum width VCR2 Contrast control characteristics 2 Set V7 at 1.0V, and read the amplitude of TP16 output: it should be taken as V02. V02 [VP-P] [dB] VCR2=20LOG 0.7 [VP-P] While monitoring the output (approx. 2.4V DC), decrease the SG6 amplitude gradually and measure the SG6 pulse width when the output becomes 2.4V or more. OTr OSD pulse characteristics (rise time) OTf OSD pulse characteristics (fall time) Measure the OSD rise time Tr and OSD fall time Tf between 10 and 90% of the output pulse with an active probe. V19th OSD input threshold voltage While monitoring the output, decrease the SG7 amplitude gradually and measure the SG7 amplitude when the output reaches 0V. VB1 Brightness control characteristics 1 Set brightness (V11) at 1.0V, and measure the output of TP16 with a voltmeter. This value is VB1. 3 MITSUBISHI ICs (Monitor) M52721SP WIDEBAND VIDEO PREAMPLIFIER WITH OSD MIX V20th BLK input threshold voltage Make sure that signal is not output in synchronization with SG7 (blanking portion). Next, while monitoring this output, decrease the SG7 amplitude gradually and measure the SG7 amplitude when the blanking portion disappears. Oaj2 OSD adjust control characteristics 2 The conditions are the same as in Oaj1 above except that V18 is set at 2V. Oaj1 OSD adjust control characteristics 1 Measure the amplitude of the output. INPUT SIGNAL SG No. Signals Sine wave with amplitude 0.7VP-P (100kHz, amplitude partially variable) SG1 0.7VP-P SG2 SG3 Sine wave with amplitude 0.7VP-P (f=100MHz) Sine wave with amplitude 0.7VP-P (f=200MHz) Pulse with amplitude 0.7VP-P (f=30kHz, duty=50%) SG5 0.7VP-P Pulse with amplitude 4.0VP-P and pulse width 3.0s synchronous with the pedestal part of standard video stepped wave (f=30kHz, pulse width and amplitude partially variable) SG6 CP+ 0V 3.0s 4.0VP-P Pulse with amplitude 4.0VP-P and pulse width 10s synchronous with the image part of standard video stepped wave (f=30kHz, amplitude partially variable) SG7 BLK, OSD signals 0V 10s 4.0VP-P SG8 Standard video stepped wave Video signal with pulse width 0.7VP-P (f=30kHz, amplitude partially variable) 4 MITSUBISHI ICs (Monitor) M52721SP WIDEBAND VIDEO PREAMPLIFIER WITH OSD MIX TEST CIRCUIT SG7 SG7 T.P16 2.2k BRIGHTNESS V11 470 a b SW20 20 a b SW19 19 V18 18 OSD ADJUST 17 GND 3 16 VIDEO OUT 15 VCC3 14 VCC2 13 F/B+ 12 GND 2 11 F/B- OSD BLK IN OSD MIX IN M52721SP CAP 1 REF.C 2 F.B.C 3 GND 1 4 VIDEO IN 5 0.01 SW5 VCC1 6 CONTRAST 7 CLAMP HOLD 8 OSD.C CLAMP+ IN 9 10 SW10 1 10 10 SG1 SG2 SG3 SG5 SG8 a b V7 2.2 1 a bc SG6 0.01 100 a A b SWA 12V Units Resistance : Capacitance : F TYPICAL CHARACTERISTICS THERMAL DERATING (MAXIMUM RATING) 2000 POWER DISSIPATION Pd (mW) 1600 1524 1200 793 800 400 When standard substrate is mounted 0 25 50 75 85 100 125 150 -20 AMBIENT TEMPERATURE Ta (C) 5 MITSUBISHI ICs (Monitor) M52721SP WIDEBAND VIDEO PREAMPLIFIER WITH OSD MIX APPLICATION EXAMPLE 1. External Feed Back +B OUTPUT STAGE TO CRT Inverted amplifier 470 CUT OFF ADJ VCC=12.0V 47 0.01 OSD BLK IN 5V 0V 5V 0V OSD MIX IN OSD ADJUST BRIGHTNESS 0.01 0.01 GND 3 47 47 GND 2 0.01 20 19 18 17 16 VCC3 VCC2 15 14 0.01 13 12 11 M52721SP 1 2 N.P 1 1 10 3 GND 1 10 4 VIDEO IN 5 0.01 6 VCC1 0.01 47 7 8 9 OSD.C 2.2 0.1 10 CLAMP+ IN 3.3 CAP REF.C F.B.C 30 CLAMP HOLD Clamp Pulse R/G/B IN CONTRAST 0 to 5V Green IN Comp/H IN V IN Sync Processor M52036SP/M52346SP M52347SP/M52347FP HD VD Units Resistance : Capacitance : F 6 MITSUBISHI ICs (Monitor) M52721SP WIDEBAND VIDEO PREAMPLIFIER WITH OSD MIX 2. Internal Feed Back +B OUTPUT STAGE TO CRT Inverted amplifier 470 CUT OFF ADJ VCC=12.0V 47 0.01 OSD BLK IN 5V 0V 5V 0V OSD MIX IN OSD ADJUST BRIGHTNESS 2.2k 0.01 GND 3 47 47 GND 2 0.01 0.01 20 19 18 17 16 VCC3 VCC2 15 14 0.01 13 12 11 M52721SP 1 2 N.P 1 1 10 3 GND 1 10 4 VIDEO IN 5 0.01 6 VCC1 0.01 47 7 8 9 OSD.C 2.2 0.1 10 CLAMP+ IN 3.3 CAP REF.C F.B.C 30 CLAMP HOLD Clamp Pulse R/G/B IN CONTRAST 0 to 5V Green IN Comp/H IN V IN Sync Processor M52036SP/M52346SP M52347SP/M52347FP HD VD Units Resistance : Capacitance : F 7 MITSUBISHI ICs (Monitor) M52721SP WIDEBAND VIDEO PREAMPLIFIER WITH OSD MIX DESCRIPTION OF PIN Pin No. Name DC voltage (V ) Peripheral circuit of pins VCC 38k 1 6k Description of function 1 CAP 4.5 Capacitance is required between the pin and GND. 6k GND VCC 2 3 REF.C F.B.C 4.5 Variable 2 or 3 Capacitance is required between the pin and GND. If the output oscillates, consider the use of additional non-polar capacitance (approx. 1) between pin 2 and pin 3. 0.2mA GND 4 12 17 GND1 GND2 GND3 GND - Since pin 17 is a GND pin for the output stage only, make sure that it does not interfere with other GND pins. VCC 3k 3k 5 VIDEO IN 2.6 Clamped at about 2.6V by the clamp pulse of pin 10. 2.6V CP 0.1mA 5 GND 6 14 VCC1 VCC2 12 Impressed - 15k 7 7 CONTRAST Variable 10k GND Do not apply 5V or more DC voltage. 8 MITSUBISHI ICs (Monitor) M52721SP WIDEBAND VIDEO PREAMPLIFIER WITH OSD MIX DESCRIPTION OF PIN (cont.) Pin No. Name DC voltage (V ) Peripheral circuit of pins VCC Description of function Capacitance is required between the pin and GND. The response is quicker as the capacitance is smaller, and as it is larger, the response will become more stable. Consequently, set this capacitance according to the signal contents. 8 CLAMP HOLD Variable GND 8 VCC 1k 2k 18k 9 OSD.C - 9 Capacitance is required between the pin and GND. 200 1k GND VCC 48.8k Input a pulse of 1.9V or more with pulse width 0.7s or more. 1.9V or more 10 CLAMP+ IN - 10 2.2V GND GND VCC 53.9k 11 13 F/B(BRIGHTNESS) Variable F/B+ 11 or 13 GND It is recommended that the IC be used between pedestal voltage 2V and 3V. 9 MITSUBISHI ICs (Monitor) M52721SP WIDEBAND VIDEO PREAMPLIFIER WITH OSD MIX DESCRIPTION OF PIN (cont.) Pin No. 15 Name VCC3 DC voltage (V ) 12V Impressed Peripheral circuit of pins 15 Description of function Power supply for the input stage only. 16 44 16 VIDEO OUT Variable A 370 or more resistor is required across GND. Make the resistor wiring as short as possible. GND VCC 102k 108k 18 OSD ADJUST 0 to 5V Impressed 18 75k GND Do not apply 5V or more DC voltage. When OSD MIX function is not used, ground the pin to GND. If external disturbing voltage intrudes into the pin, which may affect IC output, consider the use of an additional by-pass capacitor as well. 2.2 to 5V VCC 80k GND 19 OSD MIX IN - 19 2.0V 2.4V GND When not in use, ground the pin to GND. It is not possible to input OSD MIX signal only. Be sure to input the signal with OSD BLK signal. 2.8 to 5V 20 GND 20 OSD BLK IN - 2.4V GND 0.5mA When not in use, ground the pin to GND. Cannot be used for blanking of retrace line. 10 |
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