1. General Overview

️· Device Type: Fractional-N PLL (Phase-Locked Loop) clock generator.
️· Frequency Range: 125 MHz to 3000 MHz.
️· Key Features: Excellent phase noise and jitter performance, low noise floor, high level of integration.
️· Ideal Applications: Processor clocks, clock sources for data converters, reference oscillator for PHY devices, jitter attenuation, frequency translation in optical modules and line cards.

2. Pin Descriptions & Power Supplies

️· Multiple Power Pins: Includes pins like AVDD, VPPCP, VDDLS, RVDD, DVDD3V, VTune, VCC1, VCC2, and VCCPs. Many pins are not connected internally.
️· Key Control Pins: Includes Chip Enable (Cen), VCO Tuning (VTune), PLL Serial Port Enable (Sen), Data (SDI), and Clock (SCK).
️· BIAs: External bypass decoupling for precision bias circuits.

3. Package & Ordering Information

️· Package Type: 6x6 mm, surface mount.
️· Material: Low-stress injection molded plastic.
️· Ordering Options: Evaluation PCB and Evaluation Kit available.
️· RoHS Compliant.

4. Key Performance Characteristics (Implied, not explicitly stated, but evident from context):

️· Phase Noise: Industry-leading.
️· Phase Jitter: Excellent.
️· Noise Floor: <-170 dBc/Hz.
️· Output Amplitude: Adjustable via a "Gain Setting" register (see Figure 9).

5. Application Information

️· Typical Use Cases:
- High-frequency processor clocks.
- Clock source for data converters.
- Reference oscillator for Physical Layer Devices (PHY).
- Jitter attenuation and frequency translation in optical modules and line cards.
- Clock recovery in SONET/SDH and OTN systems.
️· Output Stage: Features adjustable output amplitude.
️· Evaluation Board Available: See Hittite website.

6. Figures of Note:

️· Figure 10 (HMC1034LP6GE output stage): Provides a schematic of the output stage.
️· Figure 11 (HMC1034LP6GE in a typical transmit chain): Illustrates a sample application setup.
️· Figure 9 (HMC1034LP6GE Output Stage): Illustrates the typical output amplitudes.



In essence, the document describes a highly integrated, high-performance PLL that is designed for a wide range of demanding clocking applications.