ASNT5070

Overview

The ASNT5070-PQC is a broadband tunable phase shifter fabricated in SiGe technology, designed for high-speed data and clock signal processing. It operates from DC to 17 Gbps or 14 GHz, providing an adjustable delay range of 275 ps controlled via differential tuning ports with 100 MHz bandwidth. The device features fully differential CML interfaces with internal 50 Ohm termination on inputs and outputs. It requires a single +3.3V or -3.3V power supply, consuming approximately 1.6W (480 mA at -3.3V). Key electrical characteristics include an output jitter of 2.5 ps peak-to-peak, rise/fall times of 15-19 ps, and absolute delay stability within ±3 ps across the industrial temperature range of -40°C to 125°C.

Feature Summary

• Provides variable delay adjustment for differential data and clock signals over a wide frequency range.
• Features low jitter performance and minimal delay variation across the specified industrial temperature range.
• Supports flexible interface configurations including AC/DC coupling and single-ended or differential operation.

Applications

• High-speed measurement and test equipment requiring precise signal timing adjustments.
• Data communication systems utilizing CML logic interfaces.
• Clock distribution networks needing phase alignment.

Procurement Notes

Verify the specific package suffix when ordering, as the datasheet identifies the component as ASNT5070-PQC. Confirm that the voltage supply configuration matches the required PCB layout, as positive and negative supply modes necessitate different termination strategies. Ensure the control voltage levels align with the specified differential swing requirements for full delay range utilization.

Selection Notes

Select this component for applications requiring sub-nanosecond phase adjustment in high-speed digital links. Consider the thermal management requirements due to the 1.6W power dissipation and the need to solder the center heat slug to the appropriate ground plane. Verify compatibility with existing CML drivers and receivers regarding common mode voltage levels and termination resistances.

Part Context

The ASNT5070 belongs to ADSANTEC's portfolio of high-frequency integrated circuits manufactured using Silicon Germanide (SiGe) processes. This technology enables high performance and reliability for broadband signal processing components. The device is housed in a standard 24-pin QFN package, facilitating integration into compact high-density circuit boards.

Replacement Considerations

No direct public substitute part numbers are documented in the provided datasheet. Designers should evaluate other ADSANTEC phase shifters or variable delay lines based on matching bandwidth, delay range, and interface compatibility.

FAQ

What is the maximum data rate supported by the ASNT5070?

The device supports data rates up to 17 Gbps or clock frequencies up to 14 GHz.

How is the delay adjusted on the ASNT5070?

Delay is controlled through the differential tuning ports (icntp/icntn), which offer a bandwidth of 100 MHz and provide a total adjustment range of 275 ps.

Can the ASNT5070 operate with both positive and negative power supplies?

Yes, it can operate with either a positive supply (+3.3V) or a negative supply (-3.3V), but the PCB layout and I/O termination must be configured accordingly.