Overview
The AD9985AKSTZ-110, produced by Analog Devices Inc., is a complete 8-bit, 110 MSPS monolithic analog interface designed for capturing RGB graphics signals from personal computers and workstations. This device is optimized for use in flat panel displays and other high-performance video applications. It integrates a triple ADC with an internal 1.25 V reference, a phase-locked loop (PLL), and programmable gain, offset, and clamp control. The AD9985AKSTZ-110 supports pixel rates up to 110 MHz and is fabricated in an advanced CMOS process, ensuring high performance and reliability.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Resolution | 8 | 8 | 8 | Bits |
| Differential Nonlinearity (25°C) | ±0.5 | +1.25/–1.0 | +1.35/–1.0 | LSB |
| Integral Nonlinearity (25°C) | ±0.5 | ±1.85 | ±2.0 | LSB |
| Analog Input Voltage Range | 0.5 | 1.0 | V p-p | |
| Gain Tempco (25°C) | 100 | ppm/°C | ||
| Input Bias Current (25°C) | 1 | µA | ||
| Supply Voltage (VD, VDD, PVD) | 3.15 | 3.3 | 3.45 | V |
| Supply Current (VD, VDD, PVD) at 25°C | 132 | 19 | 8 | mA |
| Total Power Dissipation | 525 | 760 | mW | |
| Operating Temperature Range | 0 | 70 | °C | |
| PLL Clock Rate | 12 | 110 | MHz | |
| PLL Jitter (25°C) | 500 | ps p-p |
Key Features
- Complete 8-bit, 110 MSPS monolithic analog interface for capturing RGB graphics signals.
- Internal 1.25 V reference and phase-locked loop (PLL) for generating pixel clock from Hsync input.
- Programmable gain, offset, and clamp control via a 2-wire serial interface.
- Supports pixel rates up to 110 MHz and analog bandwidth of 300 MHz.
- Full sync processing for composite sync and sync-on-green applications.
- Variable analog input bandwidth control and selectable input filtering.
- Three-state CMOS outputs operable from 2.5 V to 3.3 V.
- High impedance analog input pins for Red, Green, and Blue channels.
- Signals accommodated range from 0.5 V to 1.0 V p-p.
- Typical power dissipation of 500 mW and operating temperature range of 0°C to 70°C.
- 80-lead LQFP surface-mount Pb-free plastic package.
Applications
- Capturing analog RGB signals for display on flat panel monitors or projectors.
- Computer interface for HDTV monitors.
- Front end to high-performance video scan converters.
- Personal computers and workstations.
- High-resolution display systems requiring precise signal processing.
Q & A
- What is the resolution of the AD9985AKSTZ-110?
The AD9985AKSTZ-110 has an 8-bit resolution.
- What is the maximum pixel clock rate of the AD9985AKSTZ-110?
The maximum pixel clock rate is 110 MHz.
- What is the analog input voltage range for the AD9985AKSTZ-110?
The analog input voltage range is from 0.5 V to 1.0 V p-p.
- How is the gain, offset, and clamp controlled in the AD9985AKSTZ-110?
These are controlled via a 2-wire serial interface.
- What is the typical power dissipation of the AD9985AKSTZ-110?
The typical power dissipation is 500 mW.
- What is the operating temperature range of the AD9985AKSTZ-110?
The operating temperature range is from 0°C to 70°C.
- What type of package does the AD9985AKSTZ-110 come in?
The device comes in an 80-lead LQFP surface-mount Pb-free plastic package.
- Is the AD9985AKSTZ-110 compatible with 5 V digital inputs?
Yes, all digital inputs are 5 V tolerant.
- What is the PLL jitter of the AD9985AKSTZ-110 at 110 MSPS?
The PLL jitter is 500 ps p-p typical at 110 MSPS.
- Does the AD9985AKSTZ-110 support sync-on-green applications?
Yes, it supports full sync processing for composite sync and sync-on-green applications.
