LM1262

Features:

n I C compatible interface
n 4 external 8-bit DACs for bus controlled Bias and Brightness
n Vertical blank from sandcastle or input at pin 13 OR'ed with horz. blank signal, option selected by I C
n Contrast and brightness updates synchronous with vertical blank, enabled by I C
n Video set to black level through I C
n Suitable for use with discrete or integrated clamp, with software configurable Brightness mixer
n Power Save (Green) Mode, 80% power reduction
n Matched to 11-lead LM246X driver




Application

n High end 19" and 21" bus controlled monitors with OSD
n 1600 X 1200, 85 Hz or higher applications
n Low cost and high performance system with LM246X driver




Specifications

Supply Voltage, Pin 9 .................................................6.0V
Peak Video Output Source Current
(Any One Amp)
Pins 18, 19, or 20 ....................................................28 mA
Voltage at Any V_CC .................................................+0.5 >
Input Pin (V_IN) ..................................................V_IN > -0.5V
Power Dissipation (P_D)
(Above 25?C Derate based on JA and TJ)................. 2.4W
Thermal Resistance to Ambient (JA)...................... 51⁰C/W
Thermal Resistance to Case (JC).......................... 32⁰C/W
Junction Temperature (T )......................................... 150⁰C
ESD Susceptibility (Note 4) ........................................3.5 kV
ESD Machine Model (Note 5) .......................................350V
Storage Temperature ...............................-65⁰C to +150⁰C
Lead Temperature
(Soldering, 10 sec.) ...................................................265⁰C

Temperature Min	0 deg C
Temperature Max	70 deg C
Bandwidth	200 MHz
Gain	4.15 V/V
Channels	3 Channels
Output Rise Time (tr)	1.9 ns
Output Fall Time (tf)	2 ns
Pixel Clock Max	200 MHz
With OSD-Mixer	Yes
DisplayType	CRT
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Description

The LM1262 pre-amp is an integrated CMOS CRT pre-amp. The IC is I C compatible, and allows control of all the pa- rameters necessary to directly setup and adjust the gain and contrast in the CRT display. Brightness and bias can be controlled through the DAC outputs, and is well matched to the LM2479 and LM2480 integrated bias clamp IC.

The LM1262 pre-amp is designed to work in cooperation with the LM246X high gain driver family. Black level clamping of the signal is carried out directly on
theAC coupled input signal into the high impedance preamplifier input, thus eliminating the need for additional black level clamp capacitors.

The IC is packaged in an industry standard 24-lead DIP molded plastic package.