Overview
The AD8191ASTZ-RL is a high-performance 4:1 DVI/HDMI switch integrated circuit (IC) designed by Analog Devices Inc. This device is optimized for systems requiring multiple HDMI or DVI inputs and a single output, making it ideal for applications involving long cable runs. The AD8191 supports data rates up to 1.65 Gbps, enabling high-definition video transmission such as 1080p HDMI. It features equalized TMDS inputs and pre-emphasized TMDS outputs to ensure signal integrity over extended distances. The IC is available in a 100-lead, Pb-free, surface mount LQFP package and operates over a temperature range of −40°C to +85°C.
Key Specifications
| Parameter | Conditions/Comments | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| Maximum Data Rate (DR) per Channel | NRZ | - | - | 1.65 | Gbps |
| Bit Error Rate (BER) | PRBS 223 − 1 | - | - | 10^{-9} | - |
| Added Deterministic Jitter | DR ≤ 1.65 Gbps, PRBS 223 − 1 | - | - | 40 | ps (p-p) |
| Added Random Jitter | - | - | - | 2 | ps (rms) |
| Differential Intrapair Skew | At output | - | - | 1 | ps |
| Differential Interpair Skew | At output | - | - | 40 | ps |
| Input Voltage Swing Differential | - | 150 | - | 1200 | mV |
| Input Common-Mode Voltage (VICM) | AVCC − 800 to AVCC | - | - | - | mV |
| High Voltage Level Single-ended high speed channel | - | AVCC − 10 | AVCC + 10 | mV | |
| Low Voltage Level Single-ended high speed channel | - | AVCC − 600 | AVCC − 400 | mV | |
| Rise/Fall Time (20% to 80%) | - | 75 | 135 | 200 | ps |
| Input Termination Resistance Single-ended | - | - | - | 50 | Ω |
Key Features
- Supports up to four HDMI/DVI inputs and one output, with flexible channel bundling modes to configure as a 4:1 single link switch, a dual 8:1 switch, or a single 16:1 switch.
- Compliant with HDMI 1.2a and DVI standards, including HDCP serial (I2C slave) and parallel control interfaces.
- Equalized TMDS inputs and pre-emphasized TMDS outputs to maintain signal integrity over long cable runs.
- High-speed buffered and low-speed unbuffered modes for versatile application needs.
- Outputs can be set to a high impedance state to reduce power dissipation and enable larger arrays using the wire-OR technique.
- 100-lead, Pb-free, surface mount LQFP package with a temperature range of −40°C to +85°C.
Applications
- Multiple input displays and projectors.
- A/V receivers and set-top boxes.
- Advanced television (HDTV) sets.
- Any system requiring multiple HDMI or DVI inputs and a single output, particularly those with long cable runs.
Q & A
- What is the maximum data rate supported by the AD8191ASTZ-RL?
The AD8191ASTZ-RL supports data rates up to 1.65 Gbps per channel.
- What are the temperature operating ranges for the AD8191ASTZ-RL?
The device operates over a temperature range of −40°C to +85°C.
- What package type is the AD8191ASTZ-RL available in?
The AD8191ASTZ-RL is available in a 100-lead, Pb-free, surface mount LQFP package.
- Is the AD8191ASTZ-RL compliant with HDMI and DVI standards?
Yes, the AD8191ASTZ-RL is compliant with HDMI 1.2a and DVI standards, including HDCP.
- What control interfaces does the AD8191ASTZ-RL support?
The device supports both serial (I2C slave) and parallel control interfaces.[
- How can the AD8191ASTZ-RL be configured in terms of channel switching?
The AD8191ASTZ-RL can be configured as a 4:1 single link switch, a dual 8:1 switch, or a single 16:1 switch.[
- What is the purpose of the equalized TMDS inputs and pre-emphasized TMDS outputs?
The equalized TMDS inputs and pre-emphasized TMDS outputs are designed to maintain signal integrity over long cable runs.[
- Can the outputs of the AD8191ASTZ-RL be set to a high impedance state?
Yes, the outputs can be set to a high impedance state to reduce power dissipation and enable larger arrays using the wire-OR technique.[
- What are some typical applications for the AD8191ASTZ-RL?
Typical applications include multiple input displays, projectors, A/V receivers, set-top boxes, and advanced television (HDTV) sets.[
- Does the AD8191ASTZ-RL support high-speed and low-speed modes?
Yes, the device supports both high-speed buffered and low-speed unbuffered modes.[
