ASNT3112-KMC


ASNT3112-KMC View full size
  • High-speed broadband level down-shifter for analog or digital signals
  • Fully differential input CML-type interface with on-chip single-ended 50Ohm terminations to the positive supply rail
  • Fully differential output CML-type interface with on-chip single-ended 50Ohm terminations to ground
  • Differential input linearity range up to 800mV
  • Differential gain of approximately 0dB
  • Exhibits low jitter and limited temperature variation over industrial temperature range
  • Fabricated in SiGe for high performance, yield, and reliability
  • Power consumption: 1.15W
  • Custom CQFP 24-pin package

Function Operating Frequency Power, mW Package
Dual-Channel Linear Signal Level Down-Shifter DC-32 Gbps 1150 24-pin CQFP

DESCRIPTION

Fig. 1 Functional Block Diagram

The ASNT3112-KMC SiGe IC shown in Fig. 1 provides a voltage shift for high-speed data and clock signals from levels associated with positive power supplies to levels associated with negative power supplies.

 

The part’s inputs support the CML logic interface with on chip 50Ω termination to gnd and may be used differentially, AC/DC coupled, single-ended, or in any combination. In the first mode, the input signal’s common mode voltage should comply with the specifications shown in the electrical characteristics section within the part's datasheet. In the second mode, the input termination provides the required common mode voltage automatically. The part’s outputs support the PCML logic interface with on chip 50Ω termination to vcc and may be used differentially, AC/DC coupled, single-ended, or in any combination. The differential DC signaling mode is recommended for optimal performance.

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