SY89295UTG

Overview

The SY89295UTG is a programmable delay line from the Precision Edge product line, manufactured by Micrel (now Microchip Technology). It delays LVPECL input signals using digital control bits, offering a delay range of 3.2ns to 14.8ns in 10ps increments. The device operates on a 2.5V ±5% or 3.3V ±10% supply and supports frequencies up to 1.5GHz. It features low jitter (<10ps PP total) and accepts CMOS/TTL control levels via VCF/VEF biasing. The component is housed in a 32-pin TQFP package with an industrial temperature range of –40°C to +85°C.

Feature Summary

• Precision LVPECL programmable delay line with guaranteed AC performance over temperature and voltage
• Low-jitter design featuring less than 10ps peak-to-peak total jitter and less than 2ps RMS cycle-to-cycle jitter
• Programmable delay range from 3.2ns to 14.8ns controlled by a 10-bit word with 10ps increments
• Parallel inputs accept LVPECL or CMOS/LVTTL logic standards for flexible interfacing

Applications

• Clock de-skewing
• Timing adjustments
• Aperture centering

Procurement Notes

Verify the specific ordering suffix 'UTG' against official manufacturer documentation to confirm lead finish and package type. The datasheet indicates that 'UTG' corresponds to the T32-1 package with Pb-Free NiPd Au lead finish. Ensure compatibility with RoHS3 requirements if applicable to your manufacturing process. Confirm availability through authorized distributors as standard delivery times may vary based on production schedules.

Selection Notes

Select the SY89295UTG when precise digital delay adjustment is required for high-speed LVPECL signals. This part is suitable for designs needing monotonic delay steps and low jitter. Consider cascading multiple units using the D10 bit to extend the delay range beyond the single-device limit. Ensure the control interface logic levels match the VCF and VEF biasing configurations provided in the application notes.

Part Context

The SY89295U belongs to Micrel’s Precision Edge product line, designed for high-speed timing applications. The 'UTG' suffix specifically denotes the 32-pin TQFP package variant with Pb-free NiPd Au leads. This model serves as a digital alternative to analog delay lines like the SY89296L, providing discrete step control rather than fine-tune analog adjustment.

Replacement Considerations

The SY89297UMG-TR is documented as an improved dual-channel version of the SY89295U. However, it utilizes a QFN-24 package and has different pinout characteristics. Verify mechanical fit and electrical compatibility before substitution.