1527G-110LFT

Overview

The ICS1527G-110LFT is a user-programmable video clock synthesizer manufactured by Integrated Circuit Systems (ICS), now part of Renesas Electronics. It operates on a single 3.3 V supply and provides LVCMOS outputs up to 110 MHz. The device features a wide PLL input frequency range from 8 kHz to 100 MHz, supporting line-locked and genlocked high-resolution video applications. It includes regenerated HSYNC_out and VSYNC_out signals aligned with the pixel clock. Configuration is managed via an industry-standard I²C serial interface, and it offers low jitter performance with a typical short-term jitter of 27 ps.

Feature Summary

• LVCMOS single-ended clock outputs reaching 110 MHz for VGA to XGA+ resolutions
• Regenerated HSYNC_out and VSYNC_out pins synchronized to the CLK output
• Standard I²C-bus programming interface with dual device address selection via I2CADR pin
• Coast capability allowing the PLL to ignore HSYNC inputs via the VSYNC pin

Applications

• LCD monitors and plasma displays
• Video projectors
• Frequency synthesis for graphics systems
• Genlocking multiple video subsystems

Procurement Notes

Verify that the ordering suffix 'T' corresponds to the Tape & Reel shipping packaging as specified in the manufacturer's ordering information. Confirm the specific speed grade matches the design requirements, as the 110 MHz variant differs electrically from the 60 MHz version. Ensure the I²C bus voltage levels are compatible with the 5 V tolerant inputs.

Selection Notes

Select the 1527G-110LFT when output frequencies up to 110 MHz are required; otherwise, consider the 60 MHz variant. The device supports both internal and external feedback dividers via the EXTFB pin. Designers must account for the separate power supplies for digital sections (VDDD) and output drivers (VDDQ), which both operate at 3.3 V.

Part Context

This component belongs to the ICS1527 family of video clock synthesizers. The 'G' indicates the lead-free package designation, while '110' specifies the maximum output frequency speed grade. The 'LF' denotes lead-free construction, and 'T' identifies the tape and reel packaging format for automated assembly.

Replacement Considerations

The 1527G-60LFT is a functional substitute within the same package if lower output frequencies suffice. Cross-reference with newer Renesas VersaClock series devices for updated feature sets, ensuring pin compatibility and I²C register mapping alignment.