LMNA datasheet, LMNA circuit, LMNA data sheet: NSC – MHz I2C Compatible RGB Video Amplifier System with OSD & DACs, alldatasheet. LMNA Datasheet PDF Download -, LMNA data sheet. LMNA/NOPB IC PREAMP CMOS MHZ DIP National Semiconductor datasheet pdf data sheet FREE from Datasheet (data sheet).

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The OSD signal is mixed with the video signal at the output of this stage.

ABL should provide smooth decrease in gain over the operational range of 0 dB to —6 datasheeh. This pin has a very high input impedance and will pick up any high frequency signals routed near it. Bits 0 through 2 in register 08 control. These eight bits determine the output voltage of DAC 3. Page 13 Functional Description LM, giving a high impedance at the output pin.

(PDF) LM1269NA Datasheet download

This gives 8 different black levels ranging from. With such a high impedance the DC restoration can appear to be working for a number of minutes after the clamp pulse is removed. Black level clamping of the signal is carried out directly on. To insure an accurate voltage over tem. This limit is guaranteed by design. Linearity Error is the variation in step height of a 16 step staircase input signal waveform with 0.


Limits met by matching the external resistor going to pin 24 to the H Flyback voltage. Download datasheet 2Mb Share this page. This is required for CRT life and Datasheeet protection. Brightness and bias can be. The beam current limit circuit application is as shown in Figure 4: Pin Descriptions Continued Pin No.

Black level clamping of the signal is carried out directly on. This block is covered. Brightness and bias can be. When the EHT current is high enough, the current flowing. This pin allows capacitor filtering on the V Ref output and offers an accurate external reference.

Looking at the red. datashheet

LM1269NA PDF Datasheet浏览和下载

Load resistors are not required and are not used in the test circuit, therefore all the supply current is used by the pre-amp. A buffer must be used with this reference, the. Maximum video level for the OSD window occurs with both bits set to one. The output of this stage is used as the feedback for the DC restoration loop. The beam current limit circuit application is as.


LMNA National Semiconductor, LMNA Datasheet

A feedback datashdet is thus. This enables the user to The board layout shown in Figure. If a lower line rate is used then a longer. LMNA datasheet and specification datasheet. This yields a typical gain change of Copy your embed code and put on your site: The video inputs are pins 5, 6, and 7. The protocol of the interface begins with the Start Pulse followed by a byte comprised of a seven-bit Slave Device Address and a All functions of the LM are controlled through the I 2 C.

The 7 bit contrast register 03h sets the contrast level through the I 2 C bus. Bits 3 and 4 of register 08h. Using the RSS technique the scope and. Details on the internal registers are covered in the. Terminate the undriven amplifier.

The output of the Buffer Amp goes to the Contrast stage.

Proper operation of the LM does require a very accurate reference voltage. A feedback loop is thus established which acts to prevent the average beam current exceeding I ABL.