LM1203B

The LM1203B is an improved version of the popular LM1203 wideband video amplifier system. The device is in-tended for high resolution RGB CRT monitors. There are some features as follows: (1)three wideband video amplifiers (100 mhz @ -3db); (2)matched (±0.1 db or 1.2%) attenuators for contrast control; (3)three externally gated comparators for brightness control; (4)provisions for individual gain control(drive) of each video amplifier; (5)video input voltage reference; (6)low impedance output driver; (7)stable on a single sided board.

What comes next is the maximum ratings of LM1203B:(1)supply voltage (VCC), pins 1, 13, 23, 28: 13.5V; (2)peak video output source current(any 1A) pins 15, 20, or 25: 28 mA; (3)voltage at any input pin (VIN): VCC VIN GND; (4)power dissipation (pd)(above 25 derate based on Ja and Tj): 2.5W; (5)thermal resistance (Ja): 50/W; (6)junction temperature (Tj): 150; (7)ESD susceptibility: 2.0 Kv; (8)storage temperature: -65 to +150; (9)lead temperature(soldering, 10 seconds): 265.

The following is  the electrical characteristics of LM1203B: (1)supply current: 70mA typical and 95mA max at VCC1 + VCC2,RL = ; (2)video input reference voltage: 2.8V typical, 2.5V min and 3.1V max; (3)video input bias current: 7A typical and 20A max at any one amplifier; (4)clamp gate low input voltage: 1.2V typical and 0.8V max at clamp comparators on; (5)clamp gate high input voltage:1.6V typical and 2.0V min at clamp comparators off; (6)clamp gate low input current: -1A typical and -5.0A min at V14 = 0V; (7)clamp gate high input current: 0.07A typical and 0.2A max at V14 = 12V; (8)clamp cap charge current: 750A typical and 500A min at V5, 8 or 10 = 0V.