LM1269NA National Semiconductor, LM1269NA Datasheet
LM1269NA
Specifications of LM1269NA
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LM1269NA Summary of contents
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... Matched to LM246X driver Applications n Low end 14’, 15’, and 17’ bus controlled monitors with OSD n 1024 X 768 displays requiring OSD capability n Very low cost system with LM246X driver FIGURE 1. Order Number LM1269NA See NS Package Number N24D DS200099 May 2002 DS200099-1 www.national.com ...
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... Absolute Maximum Ratings If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications. Supply Voltage, Pin 9 Peak Video Output Source Current (Any One Amp) Pins 18, 19 Voltage at Any Input Pin ( Power Dissipation ( (Above 25˚C Derate based on ...
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Active Video Signal Electrical Characteristics Unless otherwise noted 25˚ Symbol Parameter A Gain Change between V Track Amplifiers V ABL Control Upper Limit ABL TH V ABL Control Voltage Active ABL Range Range A ABL Control ...
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OSD Electrical Characteristics Unless otherwise noted 25˚ ting 8. Symbol Parameter t Output Skew Time between OSD/OSD S OSD and OSD Select V 10 kHz Video Feedthrough into OSD feed V 10 MHz Video Feedthrough into ...
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External Interface Signals Electrical Characteristics Note 3: All voltages are measured with respect to GND, unless otherwise specified. Note 4: Human body model, 100 pF discharged through a 1.5 k Note 5: Machine Model ESD test is covered by specification ...
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Typical Performance Characteristics Gain Attenuation ABL Attenuation Contrast vs Frequency www.national.com 25˚ unless otherwise specified Contrast Attenuation DS200099-2 Rise and Fall Times DS200099-4 Gain vs Frequency DS200099-6 6 DS200099-3 DS200099-5 DS200099-7 ...
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Test Circuit Note load includes parasitic capacitance. Test Settings No. Basic Control of Test Bits Setting 1 Contrast 7 Max (Hex 7F Gain 7 Max (Hex 7F) Video DC Offset 5 Min Min + 0.5V ...
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Timing Diagrams (Continued) Pin Descriptions Pin No. Pin Name 1 Red OSD Input 2 Green OSD Input 3 Blue OSD Input 4 OSD Select www.national.com FIGURE 3. OSD Output Skew Schematic These inputs accept standard TTL or CMOS inputs. Each ...
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Pin Descriptions (Continued) Pin No. Pin Name 5 Red Video In 6 Green Video In 7 Blue Video In 8 Analog Ground ref ext 11 SDA 12 SCL 13 DAC4 14 DAC3 15 DAC2 ...
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Pin Descriptions (Continued) Pin No. Pin Name 18 Blue Video Out 19 Green Video Out 20 Red Video Out 21 V Out Ref 22 ABL 23 Clamp Pulse 24 H Flyback www.national.com Schematic Video outputs of the LM1269. The ideal ...
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Functional Description All functions of the LM1269 are controlled through the I Bus. Details on the internal registers are covered in the Interface Registers Section. Figure 1 shows the block 2 diagram of the LM1269. The I ...
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Functional Description FIGURE 4. ABL H Flyback: H Flyback is an analog signal input from the monitor horizontal scan. The “H Blank” section uses this signal to add horizontal blanking to the output video signal. This enables the user to ...
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Functional Description LM1269, giving a high impedance at the output pin. After bits 0 and 1 of register 9 are set the power supplies to the CRT driver and CRT can be turned off. Note: The 5V ...
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Schematic www.national.com 14 ...
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Schematic (Continued) 15 www.national.com ...
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PCB Layout Micro-Controller Interface The micro-controller interfaces to the LM1269 pre-amp via interface. The protocol of the interface begins with the Start Pulse followed by a byte comprised of a seven-bit Slave Device Address and a ...
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Micro-Controller Interface (Continued) 2 FIGURE 11 Write Sequence 2 FIGURE 12 Read Sequence 17 DS200099-33 DS200099-32 www.national.com ...
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I C Interface Registers ADDRESS Slave Address of the LM1269 is DCh when writing to the registers and DD when reading from the registers. LM1269 Pre-Amp Interface Registers (all numbers in Hex) Register Ad- De- ...
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DAC Interface Register Definitions (Continued) Bit 7 D3–7 D3–6 D3–5 D3–4 D3–3 D3–2 D3–1 D3–0 Bits 7–0: DAC 3. These eight bits determine the output voltage of DAC 3. 2 DAC 4 Register (I C address 07h) Register name: DAC ...
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... National does not assume any 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 and specifications. inches (millimeters) unless otherwise noted Order Number LM1269NA NS Package Number N24D 2 ...