AD8111ASTZ

Overview

The AD8111ASTZ is a high-speed 16 × 8 buffered video crosspoint switch manufactured by Analog Devices Inc. It features a gain of +2 and operates on ±5 V supplies with a typical idle current of 50 mA. The device provides a –3 dB bandwidth of 260 MHz, a slew rate of 500 V/μs, and excellent video performance including 0.02% differential gain error and 0.02° differential phase error at 5 MHz crosstalk levels of –78 dB. Packaged in an 80-lead LQFP (12 mm × 12 mm), it supports serial or parallel control interfaces and includes output disable capabilities for matrix expansion.

Feature Summary

• High-speed nonblocking 16 × 8 switch array with integrated output buffers
• Supports both serial daisy-chaining and parallel programming modes
• Output disable feature allows direct connection of multiple devices to expand matrix size
• Reset pin enables power-on reset capability via external capacitor

Applications

• Routing composite video signals such as NTSC, PAL, S, and SECAM
• Switching component video formats including YUV and RGB
• Handling compressed video standards like MPEG and Wavelet
• Processing 3-level digital video signals such as HDB3

Procurement Notes

Verify the specific ordering suffix against official documentation to confirm package type and temperature range. Ensure compatibility with ±5 V supply requirements and check for ESD sensitivity during handling. Confirm availability through authorized distributors as stock levels may vary.

Selection Notes

Select the AD8111ASTZ when a voltage gain of +2 is required for the crosspoint application. Choose this model over the AD8110 if signal amplification is necessary alongside switching. Consider the 80-lead LQFP package constraints and verify that the system can accommodate the serial or parallel control interface timing requirements.

Part Context

The AD8111 is part of the AD8110/AD8111 family of video crosspoint switches from Analog Devices. It shares the same physical footprint and control logic as the AD8110 but differs in internal gain configuration. This family is designed for high-performance video routing systems requiring low distortion and high bandwidth.

Replacement Considerations

The AD8110 is a pin-compatible alternative within the same family offering a gain of +1 instead of +2. Designers must evaluate whether the additional gain provided by the AD8111 is necessary for their specific signal chain requirements before substituting.