MITSUBISHI ICs (Monitor) M52721SP WIDEBAND VIDEO PREAMPLIFIER WITH OSD MIX DESCRIPTION The M52721SP is a wideband video preamplifier with 200MHz PIN CONFIGURATION (TOP VIEW) band. FEATURES 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 APPLICATION Display monitor 1 20 OSD BLK IN REF.C 2 19 OSD MIX IN F.B.C 3 18 OSD ADJUST GND 1 4 17 GND 3 VIDEO IN 5 VCC1 6 M52721SP • • • • • • CAP 15 VCC3 CONTRAST 7 CLAMP HOLD 8 13 F/B+ OSD.C 9 12 GND 2 CLAMP+ IN 10 RECOMMENDED OPERATING CONDITION 16 VIDEO OUT 14 VCC2 11 F/B– Supply voltage range....................................................11.5 to 12.5V Outline 20P4B Rated supply voltage................................................................12.0V Operating temperature..............................................-20 °C to +85°C Circuit current...........................................................................60mA BLOCK DIAGRAM OSD BLK IN OSD MIX IN OSD ADJUST GND 3 VIDEO OUT VCC3 VCC2 F/B+ GND 2 F/B– 20 19 18 17 16 15 14 13 12 11 + CONTRAST AMP – BRIGHTNESS AMP CLAMP 1 1 2 3 4 5 6 7 8 9 10 CAP REF.C F.B.C GND 1 VIDEO IN VCC1 CONTRAST CLAMP HOLD OSD.C CLAMP+ IN MITSUBISHI ICs (Monitor) M52721SP WIDEBAND VIDEO PREAMPLIFIER WITH OSD MIX ABSOLUTE MAXIMUM RATINGS (Ta=25°C, unless otherwise noted) Symbol VCC Pd Topr Tstg Vopr Vopr’ Surge Parameter Ratings Unit Supply voltage Power dissipation Operating temperature Storage temperature Recommended operating supply voltage 13.0 1524 -20 to +85 -40 to +150 12.0 11.5 to 12.5 ±200 V mW °C °C V V V Recommended operating supply voltage range Electrostatic discharge ELECTRICAL CHARACTERISTICS (Ta=25°C, VCC=12V, unless otherwise noted) Symbol ICC Parameter Circuit current 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 Vomax Output dynamic range T.P16 b Vimax Maximum allowable input T.P16 b Gv Maximum gain T.P16 b T.P16 b T.P16 b T.P16 b T.P16 VCR1 VCR2 VB1 VB2 VB3 F1-a F2-a Tr Tf 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) a SG8 a SG8 a SG8 b b 40 52 64 mA b b 8.0 8.9 11.5 VP-P b b − 0.7 1.0 VP-P b b 17.0 20.0 23.0 dB b b 13.0 15.0 17.0 dB b b 5.0 7.2 9.1 dB b b 0.6 1.0 1.4 VDC b b 1.6 2.0 2.4 VDC b b 2.6 3.0 3.4 VDC 0 5.0 2.0 0 2.5 2.0 0 1.0 2.0 0 b 5.0 1.0 0 b b 5.0 2.0 0 T.P16 b b 5.0 3.0 0 T.P16 b 2.5 open 0 c b b -1 0 3 dB T.P16 b 2.5 open 0 c b b -3 -2 3 dB T.P16 b 4 2.4 0 b b − 2.0 5.0 nsec T.P16 b 4 2.4 0 b b − 1.5 5.0 nsec b b 1.9 2.0 5.0 VDC b b 0.7 0.8 − µsec b − 5.0 10.0 nsec b − 5.0 10.0 nsec b 2.2 2.3 5.0 VDC 2.8 2.9 5.0 VDC 5.9 6.3 6.8 VP-P 2.9 3.3 3.7 VP-P a SG8 a SG8 a SG2 a SG3 a SG5 a SG5 4 2.4 0 W10 Clamp pulse minimum width T.P16 b b 4 2.4 0 T.P16 b b 4 2.4 4 T.P16 b b 4 2.4 4 V19th OSD input threshold voltage T.P16 b b 4 2.4 4 V20th BLK input threshold voltage T.P16 b a SG8 4 2.4 4 T.P16 b b 4 2.4 4 T.P16 b b 4 2.4 2 Oaj2 Max. 0.5 b OSD adjust control characteristics 1 OSD adjust control characteristics 2 Typ. 2.5 b Oaj1 Min. 0 T.P16 OTf OSD OSD MIX BLK 0.5 Clamp pulse threshold voltage OSD pulse characteristics (rise time) OSD pulse characteristics (fall time) Unit SW19 SW20 5.0 V10th OTr a SG6 a SG6 a SG6 Limits Pulse a SG6 a SG6 a SG6 a SG6 a SG6 a SG6 a SG6 a SG6 a SG6 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, VB2 Brightness control characteristics 2 Set brightness (V11) at 2.0V, and measure the output of TP16 with a voltmeter. This value is VB2. using ampere meter A. Vomax Output dynamic range Input SG8 to pin 5, and set V11 at 0.5V VB3 Brightness control characteristics 3 Set brightness (V11) at 3.0V, and measure the output of TP16 with a voltmeter. This value is VB3. (V) F1-a Frequency characteristics 1-a f=100MHz F2-a Frequency characteristics 2-a f=200MHz With zero resistance between pins 13 and 16, apply a DC voltage to 9.0 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). 0.0 TP16 OUTPUT WAVEFORM 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 F1-a=20LOG V02 [VP-P] [dB] V01 [VP-P] F2-a=20LOG V03 [VP-P] [dB] V01 [VP-P] upper side of the waveform becomes distorted. 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. 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. 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] 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 While monitoring the output (approx. 2.4V DC), decrease the SG6 taken as V01. pulse width gradually and measure the SG6 amplitude when the V01 [VP-P] [dB] VCR1=20LOG 0.7 [VP-P] V10th Clamp pulse threshold voltage 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 amplitude gradually and measure the SG6 pulse width when the taken as V02. output becomes 2.4V or more. V02 [VP-P] [dB] VCR2=20LOG 0.7 [VP-P] VB1 Brightness control characteristics 1 Set brightness (V11) at 1.0V, and measure the output of TP16 with While monitoring the output (approx. 2.4V DC), decrease the SG6 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. a voltmeter. This value is VB1. V19th OSD input threshold voltage While monitoring the output, decrease the SG7 amplitude gradually and measure the SG7 amplitude when the output reaches 0V. 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 Oaj1 OSD adjust control characteristics 1 Measure the amplitude of the output. (blanking portion). Next, while monitoring this output, decrease the SG7 amplitude gradually and measure the SG7 amplitude when the blanking Oaj2 OSD adjust control characteristics 2 The conditions are the same as in Oaj1 above except that V18 is set portion disappears. at 2V. INPUT SIGNAL SG No. Signals Sine wave with amplitude 0.7VP-P (100kHz, amplitude partially variable∗) SG1 SG2 SG3 0.7VP-P 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 3.0µs synchronous with the pedestal part of standard video stepped wave (f=30kHz, pulse width and amplitude partially variable) SG6 CP+ 3.0µs 4.0VP-P 0V Pulse with amplitude 4.0VP-P and pulse width 10µs synchronous with the image part of standard video stepped wave (f=30kHz, amplitude partially variable∗) SG7 BLK, OSD signals 10µs 4.0VP-P 0V 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 a b SW20 a b BRIGHTNESS V18 V11 SW19 470 20 19 18 17 16 15 14 13 12 11 OSD BLK IN OSD MIX IN OSD ADJUST GND 3 VIDEO OUT VCC3 VCC2 F/B+ GND 2 F/B– M52721SP CAP REF.C F.B.C GND 1 VIDEO IN VCC1 CONTRAST CLAMP HOLD 1 2 3 4 5 6 7 8 OSD.C CLAMP+ IN 9 10 0.01µ SW10 SW5 1µ 10µ 10µ a V7 b 2.2µ 1µ SG1 SG2 SG3 SG5 SG8 a b c SG6 0.01µ A 100µ b SWA a 12V Units Resistance : Ω Capacitance : F TYPICAL CHARACTERISTICS THERMAL DERATING (MAXIMUM RATING) POWER DISSIPATION Pd (mW) 2000 1600 1524 1200 793 800 400 -20 When standard substrate is mounted 0 25 50 75 85 100 125 AMBIENT TEMPERATURE Ta (°C) 5 150 MITSUBISHI ICs (Monitor) M52721SP WIDEBAND VIDEO PREAMPLIFIER WITH OSD MIX APPLICATION EXAMPLE 1. External Feed Back +B OUTPUT STAGE TO CRT Inverted amplifier CUT OFF ADJ VCC=12.0V 470 47µ 0.01µ OSD BLK IN 5V 0V OSD MIX IN OSD ADJUST BRIGHTNESS 0.01µ 5V 0V GND 3 0.01µ VCC3 VCC2 0.01µ 19 20 16 17 18 GND 2 47µ 47µ 15 0.01µ 14 13 12 11 7 8 9 10 M52721SP 2 1 3 4 N.P 1µ 1µ 10µ GND 1 6 5 VIDEO IN 0.01µ VCC1 0.01µ 10µ OSD.C 2.2µ CLAMP+ IN 0.1µ 47µ 3.3µ CAP REF.C CLAMP HOLD F.B.C 30 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 : Ω Capacitance : F 6 MITSUBISHI ICs (Monitor) M52721SP WIDEBAND VIDEO PREAMPLIFIER WITH OSD MIX 2. Internal Feed Back +B OUTPUT STAGE TO CRT Inverted amplifier CUT OFF ADJ VCC=12.0V 470 47µ 0.01µ OSD BLK IN 5V 0V OSD MIX IN OSD ADJUST BRIGHTNESS 2.2k 5V 0V GND 3 0.01µ GND 2 47µ 47µ 0.01µ VCC3 VCC2 0.01µ 19 20 16 17 18 15 0.01µ 14 13 12 11 7 8 9 10 M52721SP 2 1 3 4 N.P 1µ 1µ 10µ GND 1 6 5 VIDEO IN 0.01µ VCC1 0.01µ 10µ OSD.C 2.2µ CLAMP+ IN 0.1µ 47µ 3.3µ CAP REF.C CLAMP HOLD F.B.C 30 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 : Ω 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 Description of function VCC 38k 1 ⋅Capacitance is required between the pin and GND. 6k 1 CAP 4.5 6k GND VCC 2 3 REF.C F.B.C 4.5 Variable 2 or 3 GND 0.2mA 4 12 17 GND1 GND2 GND3 ⋅Since pin 17 is a GND pin for the output stage only, make sure that it does not interfere with other GND pins. − GND ⋅Capacitance is required between the pin and GND. If the output oscillates, consider the use of additional non-polar capacitance (approx. 1µ) between pin 2 and pin 3. VCC 3k 5 VIDEO IN 3k ⋅Clamped at about 2.6V by the clamp pulse of pin 10. 2.6 5 2.6V CP 0.1mA 6 14 VCC1 VCC2 12 Impressed GND − 15k 7 7 CONTRAST ⋅Do not apply 5V or more DC voltage. Variable 10k GND 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 Description of function VCC 8 CLAMP HOLD Variable GND 8 ⋅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. VCC 1k 2k 18k 9 OSD.C − ⋅Capacitance is required between the pin and GND. 9 200 1k GND VCC 48.8k 10 CLAMP+ IN − ⋅Input a pulse of 1.9V or more with pulse width 0.7µs or more. 10 1.9V or more GND 2.2V GND VCC 53.9k 11 (BRIGHTNESS) 13 ⋅It is recommended that the IC be used between pedestal voltage 2V and 3V. F/BVariable F/B+ 11 or 13 GND 9 MITSUBISHI ICs (Monitor) M52721SP WIDEBAND VIDEO PREAMPLIFIER WITH OSD MIX DESCRIPTION OF PIN (cont.) Pin No. 15 Name VCC3 DC voltage (V ) Peripheral circuit of pins 12V Impressed Description of function ⋅Power supply for the input stage only. 15 16 ⋅A 370Ω or more resistor is required across GND. Make the resistor wiring as short as possible. 44 16 VIDEO OUT Variable 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. VCC 102k 18 OSD ADJUST 0 to 5V Impressed 108k 18 75k GND VCC 2.2 to 5V 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 GND 20 20 OSD BLK IN − 2.4V 0.5mA GND ⋅When not in use, ground the pin to GND. Cannot be used for blanking of retrace line. 10