AOC P/N : 41A50-144 Analog-to-Digital Converter 2.3.1 Pin Connection, ADC Characteristics

Page 51

2.3Analog-to-Digital Converter 2.3.1 Pin Connection

The RGB signals are to be connected to the gmZAN1 chip as described in Table 8 and Table 9.

Table 8. Pin Connection for RGB Input with Hsync/Vsync

GmZAN1 Pin Name (Pin Number)

CRT Signal Name

Red+(#95)

Red

Red- (#94)

N/A (Tie to Analog GND for Red on the board)

Green+(#91)

Green

Green- (#90)

N/A (Tie to Analog GND for Green on the board)

Blue+(#87)

Blue

Blue- (#86)

N/A (Tie to Analog GND for Blue on the board)

HSYNC/CS (#150)

Horizontal Sync

VSYNC (#148)

Vertical Sync

Table 9. Pin Connection for RGB Input with Composite Sync

GmZAN1 Pin Name (Pin Number)

CRT Signal Name

Red+(#95)

Red

Red- (#94)

N/A (Tie to Analog GND for Red on the board)

Green+(#91)

Green

 

When using Sync-On-Green this signal also carries the sync pulse.

Green- (#90)

N/A (Tie to Analog GND for Green on the board)

Blue+(#87)

Blue

Blue- (#86)

N/A (Tie to Analog GND for Blue on the board)

HSYNC/CS (#150)

Digital composite sync. Not applicable for Sync-On-Green

The gmZAN1 chip has three ADC’s (analog-to-digital converters), one for each color (red, green, and blue). Table 10 summarizes the characteristics of the ADC.

Table 10. ADC Characteristics

 

 

MIN

TYP

MAX

NOTE

RGB Track & Hold Amplifiers

 

 

 

 

Band Width

 

 

160MHz

 

Full Scale Input = 0.75V, BW=160MHz(*)

Settling Time to 1/2%

 

 

8.5ns

 

Full Scale Adjust Range @ R,G,B Inputs

0.45V

 

0.95V

Measured @ ADC Output (**)

Full Scale Adjust Sensitivity

 

 

+/-1 LSB

 

Zero Scale Adjust Range

 

 

 

 

For a larger DC offset from an external

 

 

 

 

 

video source, the AC coupling feature is

 

 

 

 

 

used to remove the offset.

Zero Scale Adjust Sensitivity

 

 

+/-1 LSB

 

Measured @ ADC Output

ADC+RGB Track & Hold Amplifiers

 

 

 

 

Sampling Frequency (fs)

 

20MHz

 

110MHz

fs = 80 MHz

DNL

 

 

 

+/- 0.9LSB

INL

 

 

+/- 1.5LSB

 

fs = 80 MHz

Channel to Channel Matching

 

 

+/- 0.5LSB

 

fin = 1MHz, fs=80 MHz Vin= -1db below

Effective Number of Bits (ENOB)

 

7 Bits

 

 

 

 

 

 

full scale=0.75V

Power Dissipation

 

 

400mW

 

fs=110 MHz, Vdd=3.3V

Shut Down Current

 

 

 

100uA

 

(*) Guaranteed by design

(**) Independent of full scale R,G,B input

 

The gmZAN1 ADC has a built-in clamp circuit. By inserting series capacitors (about 10 nF) the DC offset of an external video source can be removed. The clamp pulse position and width are programmable.

50

Page 50 Page 52
Image 51
Page 50 Page 52
Contents Spectrum Series SEP Table of Contents Specifications for LCD Monitor General specificationsLCD-PANEL AC-IN Adapter Monitor Block DiagramInterface Connectors LCD Monitor DescriptionStorage Precautions Precautions and NoticesAssembly Precaution Operating PrecautionsPIN no Description RED Operating InstructionsAdjustment Adjustment Conditions and PrecautionsAdjustment Method Adjust 6500 color-temperature Front Panel Control Knobs CHI-MEI Panel M170E1 CIRCUIT-DESCRIPTIONOSD-INDEX Explanation Input not SupportMODULE-TPYE Component SIMPLE-INTRODUCTION about LM700 chipsetPanel Clear factory mode flag Power-On Subrotine ChartSoftware Flow Chart SET factory mode flagII. Main Subrotine Loop No Screen Appear Interface-Board Trouble-Shooting chartPANEL-POWER Circuit U200-DATA OutputMainboard Check Oscillator Block as above Keyboard Block check POWER-BLOCK check END Panel Luminance WAS Down There is an interferences in DOS ModeCorporation Inverter -MODULE Spec &Trouble Shooting ChartFunction Load Circuit M P O C O R P O R a T I O N Trouble Shooting of CHI-MEI Inverter DIVTL0037-D42 Part List Part Part Number QTY Description Supplier Remark Name Trouble Shooting Hight Voltage Protection Enbale Abnormality Transformer Abnormality Check U101 PIN4NO Freq ~70KHZ Part number 80AL17-1-CH Black, 80AL17-2-CH WhitePage Reference Part Quantity Cat.NO IV. Adapter BOM List Part no AL15-2-LIPCB PCB for CH-1205 Revd PCS For Front Heatsink No Voice Output AUDIO-MODULE Trouble shooting chartII. Sound Distortion Audio BOMGMZAN1 Name Description Pin DescriptionAnalog-to-Digital Converter PIN #Host Interface HIF / External On-Screen Display Clock Recovery / Time Base Conversion TFT TFT Panel InterfacePIN # Name Description 2pxl/clk 1pxl/clkTest Pins Typical Stand-alone Configuration System-level Block DiagramZoom Operating ModesNative Slow DclkDownscaling Destination Stand AloneSource Stand Alone Clock Recovery Circuit Functional DescriptionOverall Architecture Clock Recovery Circuit Minimum Typical Maximum Clock Recovery CharacteristicsSampling Phase Adjustment Source Timing GeneratorPin Connection for RGB Input with Composite Sync ADC CharacteristicsAnalog-to-Digital Converter 2.3.1 Pin Connection Pin Connection for RGB Input with Hsync/VsyncSource Timing Measurement Sync. Signal SupportDisplay Mode Support Input Timing MeasurementIRQ Controller Data PathIRQ-Generation Conditions IRQ Event Remark RGB Offset TFT Panel Interface Timing SpecificationScaling Filter Gamma TablePCLKB*4 Pclk *1Vsync width and display position in TFT Horizontal size in TFTHsync width in TFT One pixel per clock mode in TFT Power ManagerState 3 Panel Fully Active State 0 Power OffState 1 Power On State 2 Panel Drive EnabledValue 4 bits Drive Strength in mA Panel Interface Drive StrengthHost Interface Panel Interface Pad Drive StrengthSerial Communication Protocol Timing Diagram of the gmZAN1 Serial CommunicationGmZAN1 Serial Channel Specification Parameter Min Typ Max Multi-Function Bus MFBOn-Screen Display Control On-Chip OSD Controller OSD Color MapTclk Input Tclk SpecificationPvdd Electrical CharacteristicsDC Electrical Characteristic Parameter Min Typ Max Absolute Ratings Parameter Min Typ MaxMechanical of Cabinet Front DIS-ASSEMBLY T780KMGHBAA0A Specification Parts List of CabinetParts List of Cabinet continue Location CBPC780GM Specification Parts List of Conversion BoardLocation AI780GM Specification Location AI780GM SMD EC 22UF 16V 85C Csize KEPC780EK Parts List of KEY PC BoardParts List of Audio Board Parts List of DC-POWER BoardPower System and Consumption Current Adapter ModuleInverter Module PCB Layout TOP-LEVEL Flow Schematic DiagramII. GMZAN1 Block Lvds Block MCU Block Power Block KBL405G Adapter Schematic CH-1205C1,C2,C4 --- 1uF/50V

P/N : 41A50-144 specifications

The AOC P/N: 41A50-144 is a versatile and high-performing monitor that caters to both professional and casual users. With its sleek design and array of features, this model embodies the epitome of modern display technology.

One of the standout characteristics of the AOC 41A50-144 is its impressive display resolution. Equipped with a 1920 x 1080 pixels Full HD panel, it delivers sharp, vibrant images and ensures that text and graphics appear crisp and clear. The monitor boasts a wide viewing angle that allows for consistent color reproduction, making it perfect for collaborative workspaces or multi-screen setups.

In terms of refresh rates, the AOC 41A50-144 supports a 144Hz refresh rate, catering exceptionally well to gamers and media consumers who seek responsive performance. This high refresh rate reduces motion blur, providing a smoother experience during fast-paced gaming sessions or action-packed videos. Coupled with a 1ms response time, this monitor minimizes ghosting and lag, delivering a seamless visual experience.

The monitor utilizes advanced technologies to enhance the viewing experience further. One notable feature is AMD FreeSync support, which synchronizes the monitor's refresh rate with the GPU's frame rate, effectively eliminating screen tearing and stuttering during gameplay. This leads to a more immersive experience and ultimately gives gamers a competitive edge.

Another critical aspect of the AOC 41A50-144 is its connectivity options. It comes with multiple ports including HDMI, DisplayPort, and VGA, making it compatible with a wide range of devices. This versatility ensures that users can easily connect their computers, gaming consoles, or multimedia players without any hassle.

The AOC 41A50-144 also places importance on user comfort. It incorporates features like flicker-free technology and a low blue light mode to reduce eye strain during extended use. This focus on ergonomics allows for a more enjoyable viewing experience, regardless of the tasks at hand.

Overall, the AOC P/N: 41A50-144 combines high-performance, advanced technologies, and user-centered design. Whether for gaming, professional tasks, or entertainment purposes, this monitor stands out as a reliable and efficient solution that meets the demands of various users. Its features and specifications make it a compelling choice for anyone looking to enhance their display setup.
Top Page Image Contents