AD8197B: 4:1 HDMI/DVI Switch with Equalization

The AD8197B is an HDMITM/DVI switch featuring equalized TMDS(R) inputs and pre-emphasized TMDS outputs, ideal for systems with long cable runs. The AD8197B offers individual control of the on/off state of the TMDS input termination resistors via I^2C control. Outputs can be set to a high impedance state to reduce the power dissipation and/or to allow the construction of larger arrays using the wire-OR technique.

The AD8197B is provided in a 100-lead LQFP, Pb-free, surface-mount package, specified to operate over the -40°C to +85°C temperature range.

产品聚焦

1. Supports data rates up to 2.25 Gbps, enabling 1080p deep color (12-bit color) HDMI formats, and greater than UXGA (1600 × 1200) DVI resolutions.
2. Input cable equalizer enables use of long cables at the input (more than 20 meters of 24 AWG cable at 2.25 Gbps).
3. Auxiliary switch routes a DDC bus and two additional signals for a single-chip, HDMI 1.3 receive-compliant solution.

产品应用领域 Applications

• Multiple input displays
• Projectors
• A/V receivers
• Set-top boxes
• Advanced television (HDTV) sets

AD8197B 特点

• Pin-to-pin compatible with the AD8197A

4 TMDS channels per link

• Supports 250 Mbps to 2.25 Gbps data rates
• Supports 25 MHz to 225 MHz pixel clocks
• Equalized inputs allow use of long HDMI cables (20 meters at 2.25 Gbps)
• Fully buffered unidirectional inputs/outputs
• Per input switchable, 50 Ohm on-chip terminations
• Switchable output 50 Ohm on-chip terminations
• Pre-emphasized outputs
• Low added jitter
• Single-supply operation (3.3 V)

4 auxiliary channels per link

• Bidirectional unbuffered inputs/outputs
• Flexible supply operation (3.3 V to 5 V)
• HDCP standard compatible
• Allows switching of DDC bus and 2 additional signals
• 4 inputs, 1 output HDMI/DVI links
• Enables HDMI 1.3-compliant receiver
• Output disable feature
  Reduced power dissipation
  Removable output termination
  Allows building of larger arrays
• Two AD8197Bs support HDMI/DVI dual link
• Standards compatible: HDMI receiver, HDCP, DVI
• Serial (I^2C slave) and parallel control interface
• 100-lead, 14 mm × 14 mm LQFP, Pb-free package

AD8197B 功能框图

AD8197B 芯片订购指南

产品型号	产品状态	封装	引脚	温度范围
AD8197B-EVALZ	量产	评估板	-	工业
AD8197BASTZ	量产	100 ld LQFP	100	工业
AD8197BASTZ-RL	量产	100 ld LQFP	100	工业

AD8197B 应用技术支持与电子电路设计开发资源下载

1. AD8197B 数据手册DataSheet 下载 . PDF
2. ADI 模拟器件公司比较器产品选型指南 . PDF
3. Analog Devices, Inc. 美国模拟器件公司产品订购手册 .PDF