Overview
The ADA4420-6ARQZ-RL, produced by Analog Devices Inc., is a low-cost, 6-channel video reconstruction filter designed specifically for consumer applications. It features six independent sixth-order Butterworth filters/buffers, with three channels dedicated to standard definition (Y/C or CVBS) signals and three channels for high definition component signals (YPbPr or RGB). This device operates from a single 5 V supply and is optimized for low power consumption, making it ideal for applications where power efficiency is critical.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| DC Voltage Gain | 5.8 | 6.0 | 6.2 | dB |
| Input Voltage Range | 0 | 2.1 | V | |
| Output Voltage Range | 0.25 | 4.6 | V | |
| Linear Output Current per Channel | 30 | mA | ||
| Operating Voltage | 4.75 | 5.25 | V | |
| Quiescent Supply Current (Active) | 32 | 36 | mA | |
| Quiescent Supply Current (Disabled) | 7 | 13 | μA | |
| Operating Temperature Range | −40 | +85 | °C | |
| Storage Temperature Range | −65 | +125 | °C |
Key Features
- Rail-to-Rail Output Capabilities: Each output driver has rail-to-rail output capabilities with a 6 dB gain, enabling direct drive of up to two 75 Ω doubly terminated cables.
- Built-in Offset: A built-in offset of 250 mV allows the outputs to be dc-coupled, eliminating the need for large coupling capacitors.
- Transparent Sync Tip Clamp: Each channel features a transparent sync tip clamp, allowing ac coupling of the inputs without requiring dc restoration.
- Low Power Consumption: The device operates with a low quiescent current of 32 mA and can be disabled to reduce the supply current to less than 8 μA.
- High Impedance Inputs: High impedance inputs provide flexibility in terminating input signals, suitable for both DAC current source outputs and voltage outputs.
- Extended Industrial Temperature Range: Operates in the temperature range of −40°C to +85°C.
Applications
The ADA4420-6ARQZ-RL is ideally suited for video reconstruction and anti-alias filtering applications in consumer electronics. It is particularly useful in:
- Set-top boxes and DVDs, where it can directly drive the outputs.
- Video amplifiers and analog video functions, enhancing signal quality and stability.
- High definition and standard definition video processing, supporting YPbPr, RGB, Y/C, and CVBS signals.
Q & A
- What is the primary function of the ADA4420-6ARQZ-RL?
The ADA4420-6ARQZ-RL is a low-cost, 6-channel video reconstruction filter designed for consumer applications, particularly for video reconstruction and anti-alias filtering.
- What types of video signals does the ADA4420-6ARQZ-RL support?
The device supports both high definition component signals (YPbPr or RGB) and standard definition signals (Y/C or CVBS).
- What is the operating voltage range of the ADA4420-6ARQZ-RL?
The device operates from a single 5 V supply, with an operating voltage range of 4.75 V to 5.25 V.
- How much current does the ADA4420-6ARQZ-RL consume when active and when disabled?
When active, the quiescent supply current is typically 32 mA. When disabled, the supply current reduces to less than 8 μA.
- What is the significance of the built-in offset in the ADA4420-6ARQZ-RL?
The built-in offset of 250 mV allows the outputs to be dc-coupled, eliminating the need for large coupling capacitors.
- Can the ADA4420-6ARQZ-RL drive 75 Ω loads directly?
Yes, each output is capable of driving up to two 75 Ω doubly terminated cables.
- What are the key benefits of the transparent sync tip clamp in the ADA4420-6ARQZ-RL?
The transparent sync tip clamp allows ac coupling of the inputs without requiring dc restoration.
- In what temperature range does the ADA4420-6ARQZ-RL operate?
The device operates in the extended industrial temperature range of −40°C to +85°C.
- What are the available package options for the ADA4420-6ARQZ-RL?
The device is available in a 16-lead QSOP and a 20-lead TSSOP package.
- How does the ADA4420-6ARQZ-RL contribute to power conservation in applications?
The device features a disable function that reduces the supply current to less than 8 μA when not in use, contributing to significant power conservation.
