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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Scope and generator response used for testing: 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.
This yields a typical gain change of. ABL should provide smooth decrease in gain over the operational range of 0 dB to —6 dB. The ABL acts on all three channels. Copy your embed code and put on your site: Load resistors are not required and are not used in the test circuit, therefore all. The external resistor is connected to pin. The 7 bit contrast register 03h sets the contrast level through the I 2 C bus. Minimum video level will occur with both bits set to a zero.
If a lower line rate is used then a longer.
LMNA (NSC) PDF技术资料下载 LMNA 供应信息 IC Datasheet 数据表 (4/20 页)
The external resistor is connected to pin This voltage is generated in the V Ref block. Page 14 Schematic www.
This gives 8 different black levels ranging from 0. This voltage is generated in. With such a high impedance the DC restoration can appear. dtaasheet
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The OSD signal is. H Flyback is an analog signal input from the monitor horizontal scan. This register controls the Contrast stage in each video channel. Page 7 Test Circuit Note load includes parasitic capacitance. With such a high impedance the DC restoration can appear to be working for a number of minutes after the clamp pulse is removed. 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 feedback loop is thus established which acts to prevent the average beam current exceeding I ABL. This enables the user to Proper operation of the LM does require a very.
This pin has a very. The beam current limit circuit application is as. Human body model, pF discharged through a 1. Maximum video level for the OSD window occurs. When current is drawn from the EHT supply, some of the. Registers 00h, 01h, 02h are used for the gain attenuation. Terminate the undriven amplifier inputs to simulate generator loading. The Auto Beam Limit control reduces the gain of the. Maximum video level for the OSD window occurs with both bits set to one.
All voltages are measured with respect to GND, unless otherwise specified. The video black level is used for this test. The protocol of the interface begins with the Start Pulse followed by a byte comprised of a seven-bit Slave Device Address and a If a lower line rate is used then a longer clamp pulse may be required.
Brightness and bias can be. This limit is guaranteed by design. This stage provides the drive needed for the inputs of a CRT. This register controls the Contrast stage in each. This is required for CRT life and X-ray protection. Since the video must be AC coupled to the LM, the coupling cap is also used to store the reference voltage for DC restoration. Minimum video level will occur with.
LMNA datasheet and specification datasheet. Looking at the red. Bits 0 through 2 in register 08 control this stage. All functions of the LM are controlled through the I 2 C. To insure an accurate voltage over tem.