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Registers 00h, 01h, 02h are used for the gain attenuation. Block and Connection Diagram. A minimum datasneet width of ns is guaranteed for a horizontal line of dqtasheet kHz. Measure output levels of the other two undriven amplifiers relative to the driven amplifier to determine channel separation. A feedback loop is thus.
To insure an accurate voltage over tem- perature, an external resistor is used to set the current in the V Ref stage.
LMNA (NSC) PDF技术资料下载 LMNA 供应信息 IC Datasheet 数据表 (4/20 页)
Pin Descriptions Continued Pin No. Load resistors are not required and are not used in the test circuit, therefore all the supply current is used by the pre-amp.
The Auto Beam Limit control reduces the gain of the video amplifiers in response to a control voltage proportional to the CRT beam current. The output of this stage is used as the feedback for the DC restoration loop.
Black level clamping of the signal is carried out directly on. Black level clamping of the signal is carried out directly on the AC coupled input signal into the high impedance pream- plifier input, thus eliminating the need for additional black level clamp capacitors. ABL is ddatasheet in more detail later in. Details on the internal registers are covered in the Interface Registers Section. Looking at the red.
PDF LM1269NA Datasheet ( Hoja de datos )
The OSD signal is. The IC is I 2 C compatible, and allows control of all the pa- rameters necessary to directly setup and adjust the gain and contrast in the CRT display. This yields a typical gain change of. This lm129na is generated in the V Ref block. The recommended driver for this pre-amp is one of the LMX family.
This register controls the Contrast stage in each video channel. Details on datashfet internal registers are covered in the. The output of the Buffer Amp goes to the Contrast stage. ABL should provide smooth decrease in gain over the operational range of 0 dB to —6 dB. Proper operation of the LM does require a very.
The board layout shown in Figure 10 is a good example of trace routing near pin datasheeet Minimum video level will occur with. This block is covered. The video black level is used for this test. Using the RSS technique the scope and.
LM1269NA PDF Datasheet浏览和下载
Linearity Error is the variation in step height of a 16 step staircase input signal waveform with 0. The video and OSD blocks. Terminate the undriven amplifier inputs to simulate generator loading.
This block is covered in more detail below. The IC is I 2 C compatible, and allows control of all the pa.