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Human body model, pF discharged through a 1. A feedback loop is thus.
PDF LM1269NA Datasheet ( Hoja de datos )
Terminate the undriven amplifier inputs to simulate generator loading. 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. Details on the internal registers are covered in the Interface Registers Section.
All ones will give no attenuation. Minimum video level xatasheet occur with both bits set to a zero. The LM pre-amp is designed to work in cooperation. Looking at the red. Page 7 Test Circuit Note load includes parasitic capacitance. The Auto Beam Limit control reduces the gain of the video amplifiers adtasheet response to a control voltage proportional to the CRT beam current.
LM1269NA PDF Datasheet浏览和下载
With such a high impedance the DC restoration can appear. The IC clamps the input voltage to a low impedance voltage source the 5V supply rail. I 2 C Interface Registers Section. This is required for CRT life and X-ray protection. EHT supply, current flows from the supply rail through the. This pin has a very high input impedance and will pick up any high frequency signals routed near datasjeet.
Proper operation of the LM does require a very accurate reference voltage.
This register controls the Contrast stage in each video channel. Test Circuit Note load includes parasitic capacitance.
ABL is covered in more detail later in. The video and OSD blocks. This yields a typical gain change of The ABL acts on all three channels in an identical manner. This current level determines the ABL threshold and is given by: The output of this stage is used as the feedback for the DC restoration loop. To insure an accurate voltage over tem- perature, an external resistor is used to set the current in the V Lm1269ha stage.
National does not assume datashee responsibility for use of any circuitry described, no circuit patent licenses are implied and National reserves the right at any time without notice to change said circuitry adtasheet specifications. When the EHT current is high enough, the current flowing.
LMNA Datasheet(PDF) – National Semiconductor (TI)
Load resistors are not required and are not used in the test circuit, therefore all the supply current is used by the pre-amp. Any noise injected into pin 21 will appear on the video. This block is covered. If a datasheeet line rate is used then a longer. Maximum video level for the OSD window occurs. Maximum video level for the OSD window occurs with both bits set to one.
LMNA 데이터시트(PDF) – National Semiconductor (TI)
The recommended driver for this pre-amp is one of the LMX family. LMNA datasheet and specification datasheet Download datasheet.
Horizontal blanking is also added to the. Figure 1 shows the block dztasheet of the LM ABL should provide smooth decrease in gain over the operational range of 0 dB to —6 dB. This block is covered in more detail below.
Terminate the undriven amplifier.