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Home > Products > Integrated Circuits (ICs) > Clock/Timing > Clock Generators, PLLs, Frequency Synthesizers

Analog Devices Inc. HMC1033LP6GE

Name: HMC1033LP6GE
Brand: Analog Devices Inc.
SKU: HMC1033LP6GE
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: HMC1033LP6GE

Manufacturer:: Analog Devices Inc.

Category:: Clock Generators, PLLs, Frequency Synthesizers

Package:: 40-VFQFN Exposed Pad

Datasheet:: HMC1033LP6GE.pdf

Description:: HMC1033 - HI PERF CLK GEN 1000MH

Quantity:: RFQ Add To RFQ list

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Product details

Overview

HMC1033LP6GE from Analog Devices (formerly Hittite Microwave) is a high-performance, +3.3 V fractional-N clock generator IC with integrated VCO, delivering differential LVDS/LVPECL outputs from 25 MHz to 550 MHz. It features a low-noise phase detector, 24-bit Delta-Sigma modulator, and <99 fs RMS jitter (12 kHz–20 MHz, 350 MHz output, typ), enabling precision clocking for high-speed data converters and optical line cards.

For engineers reviewing the HMC1033LP6GE datasheet, HMC1033LP6GE pinout, HMC1033LP6GE application, or HMC1033LP6GE equivalent, this device supports exact-frequency mode (0 Hz error), programmable loop bandwidth via external filter, SPI-controlled output mute/termination mode, and dual priority modes (Power vs. Performance) - all critical for jitter-sensitive SERDES, FPGA, and ADC reference design.

Technical Context

The HMC1033LP6GE implements a fractional-N PLL architecture with integrated VCO and a 24-bit Delta-Sigma modulator, supporting integer and fractional frequency translation up to 100 MHz phase detector frequency. Its low-noise PD and optimized charge pump deliver <-162 dBc/Hz phase noise floor and -226 dBc/Hz figure of merit (fractional mode).

It provides configurable differential outputs with internal/external termination options, gain-adjustable amplitude (690–2560 mVpp), and selectable LVDS/LVPECL logic levels. Output disable, lock detect, and SPI serial interface enable dynamic system-level control across industrial temperature range (-40°C to +85°C).

Key Specifications

Parameter	Value and Actual Design Meaning
Output Frequency Range	25 MHz to 550 MHz - covers SONET OC-48/192, OTN OTU2/3, and common FPGA/ADC sampling clocks.
RMS Phase Jitter (12 kHz–20 MHz)	99 fs @ 350 MHz (typ) - enables sub-10⁻¹⁵ BER in 10G/40G optical links and >14-bit ENOB in high-speed ADCs.
Phase Noise Floor	<-162 dBc/Hz - improves SNR in RF sampling systems and reduces EVM in high-order QAM modems.
Supply Voltage	+3.3 V only (3.15–3.5 V) - simplifies power delivery with single-rail LDO design; no dual-supply sequencing required.
Differential Output Amplitude	690–2560 mVpp (12 gain steps) - matches input sensitivity of LVDS receivers (e.g., TI DS90LV047A) and LVPECL inputs (e.g., ON Semi MC100EP016).
Operating Temperature	-40°C to +85°C - qualified for telecom line cards, baseband units, and industrial embedded timing applications.
Package	40-lead 6×6 mm QFN (LP6GE) - 36 mm² footprint with exposed ground paddle for optimal thermal dissipation (R_TH = 10 °C/W).

Pinout & Package

40-lead, 6×6 mm RoHS-compliant QFN package (MSL1) with exposed ground paddle; body material: low-stress injection-molded plastic with silica/silicon filler. All ground leads and paddle must be soldered to PCB RF ground per Hittite Application Note.

Pin/Terminal	Circuit Role	Design Meaning
1, 3, 4, 7, 10, 16, 25, 27, 35–39	Power Supply Inputs	Dedicated analog/digital/VCO/charge pump rails (AVDD, VPPCP, VDDLS, etc.) - require individual decoupling for noise isolation.
2, 5, 6, 8, 9, 11–14, 18–22, 24, 26, 34, 37, 38	No Connect (NC)	Internally unconnected; externally grounded per RF layout best practice to minimize parasitic coupling.
15	Reference Input	XREFP accepts AC-coupled 0.2–3.3 V_p-p reference (max 350 MHz); 5 pF input capacitance requires careful trace impedance control.
17	Chip Enable	CEN active-high - enables full device operation; tied high for normal use, pulled low for standby (10 µA current draw).
23	VCO Tuning	VTUNE analog input - connects to external loop filter; sensitive to noise; requires guard ring and low-impedance routing.
28, 29	Differential Outputs	OUT_N / OUT_P - configurable LVDS/LVPECL; internally terminated (100 Ω diff) or externally terminated; AC/DC coupling supported.
30–33	SPI Interface	SEN/SDI/SCK/LD-SDO - CMOS-level 3.3 V serial bus for register programming and lock status readback.
40	Bias Reference	BIAS provides internal 1.920 V ±20 mV reference - must be measured with ≥10 GΩ meter; not loadable.

Key Features

Feature	Design Value
Exact Frequency Mode	Generates output frequencies with 0 Hz frequency error using 24-bit Delta-Sigma modulation - eliminates long-term drift in synchronous networks.
Adjustable PLL Loop Bandwidth	Configured via external passive loop filter components - enables optimization for jitter attenuation (low BW) or fast lock time (high BW).
Output Mute Control	SPI-programmable output disable - supports board-level testing, power sequencing, and dynamic clock gating without hardware changes.
Power/Performance Priority Modes	Selectable via register: Power Priority reduces current by ~45 mA at 350 MHz; Performance Priority improves jitter by ~25 fs RMS.
LVDS/LVPECL Dual-Termination	Internal 100 Ω differential termination (LVDS) or external biasing (LVPECL) - eliminates need for external resistors in many LVDS receiver interfaces.

Applications

10G/40G Optical Line Cards	Data Converter Clocking
Use Scenario: Generating primary reference clocks for OTU2/OTU3 framers and FEC engines in metro DWDM line cards. IC Role / Device Role / Timing Role: Low-jitter clock source driving serializer/deserializer (SERDES) PHYs and forward error correction (FEC) ASICs. Use Value: 99 fs RMS jitter ensures eye opening >80% at 43 Gbps, meeting ITU-T G.709 and IEEE 802.3ba jitter compliance limits.	Use Scenario: Providing sample clocks to 16-bit, 250 MSPS ADCs (e.g., AD9643) in radar and communications test equipment. IC Role / Device Role / Timing Role: Ultra-low-phase-noise clock generator replacing SAW oscillators to maximize SNR and SFDR. Use Value: <-162 dBc/Hz phase noise floor directly improves ADC ENOB by ≥0.8 bits at Nyquist compared to standard XO solutions.
Cellular Baseband Units	FPGA/Processor Clock Distribution
Use Scenario: Delivering synchronized clocks to multi-channel digital predistortion (DPD) engines and RFICs in 4G LTE macro base stations. IC Role / Device Role / Timing Role: Fractional-N PLL generating multiple phase-aligned clocks (e.g., 155.52 MHz, 307.2 MHz) from single crystal reference. Use Value: Exact Frequency Mode eliminates frequency offset accumulation across cascaded DPD stages, reducing EVM by >1.5% RMS.	Use Scenario: Supplying core, I/O, and transceiver clocks to Xilinx Kintex Ultrascale+ FPGAs in high-throughput packet processing systems. IC Role / Device Role / Timing Role: Programmable clock generator with SPI interface enabling dynamic reconfiguration of clock rates during runtime. Use Value: 12-step output amplitude control ensures optimal signal integrity into FPGA differential clock inputs across varying PVT conditions.

10G/40G Optical Line Cards

Data Converter Clocking

Use Scenario: Generating primary reference clocks for OTU2/OTU3 framers and FEC engines in metro DWDM line cards.

IC Role / Device Role / Timing Role: Low-jitter clock source driving serializer/deserializer (SERDES) PHYs and forward error correction (FEC) ASICs.

Use Value: 99 fs RMS jitter ensures eye opening >80% at 43 Gbps, meeting ITU-T G.709 and IEEE 802.3ba jitter compliance limits.

Use Scenario: Providing sample clocks to 16-bit, 250 MSPS ADCs (e.g., AD9643) in radar and communications test equipment.

IC Role / Device Role / Timing Role: Ultra-low-phase-noise clock generator replacing SAW oscillators to maximize SNR and SFDR.

Use Value: <-162 dBc/Hz phase noise floor directly improves ADC ENOB by ≥0.8 bits at Nyquist compared to standard XO solutions.

Cellular Baseband Units

FPGA/Processor Clock Distribution

Use Scenario: Delivering synchronized clocks to multi-channel digital predistortion (DPD) engines and RFICs in 4G LTE macro base stations.

IC Role / Device Role / Timing Role: Fractional-N PLL generating multiple phase-aligned clocks (e.g., 155.52 MHz, 307.2 MHz) from single crystal reference.

Use Value: Exact Frequency Mode eliminates frequency offset accumulation across cascaded DPD stages, reducing EVM by >1.5% RMS.

Use Scenario: Supplying core, I/O, and transceiver clocks to Xilinx Kintex Ultrascale+ FPGAs in high-throughput packet processing systems.

IC Role / Device Role / Timing Role: Programmable clock generator with SPI interface enabling dynamic reconfiguration of clock rates during runtime.

Use Value: 12-step output amplitude control ensures optimal signal integrity into FPGA differential clock inputs across varying PVT conditions.

Equivalent & Alternatives

The following parts are listed as comparable options for similar clock generator applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
LMK04828BISQE/NOPB	Two-stage jitter cleaner (PLL1 + PLL2); higher integration (integrated LDOs, dual-loop architecture); 3.15–3.45 V supply; 48-pin WQFN.	Superior jitter cleaning (75 fs typ) but larger footprint and higher BOM cost; requires two reference inputs for optimal performance.	Choose when ultra-low jitter cleaning is required and board space allows larger package; avoid if single-stage simplicity and lower cost are priorities.
Si5341-A01A-GM	Multi-output, any-rate clock generator; 10 outputs; I²C/SPI interface; 3.3 V only; 44-pin QFN; integrated DCXO option.	Higher channel count and flexible output formatting (LVDS/LVPECL/HCSL), but higher typical jitter (120 fs @ 350 MHz) and less optimized phase noise floor (-157 dBc/Hz).	Choose when multiple independent clock domains are needed; avoid if single-output, lowest-jitter performance is critical for ADC/SERDES.

Compared with LMK04828BISQE/NOPB and Si5341-A01A-GM, the HMC1033LP6GE delivers best-in-class phase noise and lowest jitter in a compact single-output architecture, making it optimal for space-constrained, jitter-limited applications where simplicity and RF-grade spectral purity outweigh multi-output flexibility.

Availability

HMC1033LP6GE is available at Aetrix Electronics and suitable for 10G/40G optical modules, high-speed data converter reference designs, and cellular infrastructure baseband units requiring stable component supply, long-term lifecycle support, and guaranteed traceable sourcing.

Supply support for HMC1033LP6GE includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Analog Devices acquired Hittite Microwave in 2014 and integrates its high-frequency RF and timing portfolio into precision analog and mixed-signal solutions. The company specializes in high-performance signal chain components for communications, defense, and instrumentation.

The HMC1033LP6GE belongs to Hittite's legacy clock generator product line, designed specifically for low-jitter, wideband frequency synthesis in optical transport, wireless infrastructure, and high-speed data acquisition systems.

FAQ

What is the maximum phase detector frequency supported by the HMC1033LP6GE?

The HMC1033LP6GE supports a maximum phase detector frequency of 100 MHz in both integer and fractional-N modes. This capability enables wider loop bandwidths and superior spurious performance, especially when paired with high-frequency reference inputs up to 350 MHz on the XREFP pin. Operation above 70 MHz may require disabling offset currents per the datasheet guidance.

Does the HMC1033LP6GE support both LVDS and LVPECL output standards?

Yes, the HMC1033LP6GE supports both LVDS and LVPECL-compatible differential outputs via SPI-configurable termination. In LVDS mode, it uses internal 100 Ω differential termination and 1.2 V common-mode voltage. In LVPECL mode, external termination is used with 2.0 V common-mode voltage. Output amplitude is adjustable across 12 gain settings (690–2560 mVpp).

How does the Exact Frequency Mode work in the HMC1033LP6GE?

The HMC1033LP6GE's Exact Frequency Mode leverages its 24-bit Delta-Sigma modulator to achieve zero Hz frequency error between input reference and output clock - eliminating long-term drift and residual fractional spur energy. This mode is enabled via register configuration and is particularly valuable in synchronous optical networking (SONET/OTN) and precision test equipment where absolute frequency accuracy is mandatory.

What is the thermal resistance and recommended grounding for the HMC1033LP6GE package?

The HMC1033LP6GE uses a 40-lead 6×6 mm QFN package with exposed ground paddle and has a junction-to-ground-paddle thermal resistance of 10 °C/W. All ground leads and the exposed paddle must be soldered directly to the PCB RF ground plane using multiple thermal vias - per Hittite's application note - to maintain junction temperature ≤125 °C under full-load conditions (240 mA typical).

Can the HMC1033LP6GE operate with a 50 MHz crystal reference?

Yes, the HMC1033LP6GE accepts AC-coupled reference inputs from 0.2 V_p-p to 3.3 V_p-p, including 50 MHz crystals. The XREFP pin has 5 pF input capacitance and supports reference frequencies up to 350 MHz. For optimal phase noise, a low-jitter 50 MHz OCXO is recommended - measurements show improved phase noise floor versus standard TCXOs.

HMC1033LP6GE Specifications

Product attributes: Attribute value

Manufacturer:: Analog Devices Inc.

Series:: -

Package/Case:: 40-VFQFN Exposed Pad

Packaging:: Bulk

Product Status:: Active

Programmable:: Not Verified

Type:: -

PLL:: Yes

Input:: Clock

Output:: LVDS, LVPECL

Number of Circuits:: 1

Ratio - Input:Output:: -

Differential - Input:Output:: No/Yes

Frequency - Max:: 550MHz

Divider/Multiplier:: Yes/No

Voltage - Supply:: 3.15V ~ 3.5V

Operating Temperature:: -40°C ~ 85°C

Mounting Type:: Surface Mount

Grade:: -

Qualification:: -

Supplier Device Package:: 40-SMT (6x6)

HMC1033LP6GE FAQ

1.How can I place an order for HMC1033LP6GE through Aetrix?

Please submit a Request for Quotation (RFQ) for HMC1033LP6GE on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for HMC1033LP6GE reliable?

The price and inventory of HMC1033LP6GE are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HMC1033LP6GE is usually 5 days.

3.What payment methods are accepted for HMC1033LP6GE?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HMC1033LP6GE transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for HMC1033LP6GE?

HMC1033LP6GE orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your HMC1033LP6GE order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for HMC1033LP6GE?

For technical support, including HMC1033LP6GE datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HMC1033LP6GE requirements.

6.How does Aetrix verify that HMC1033LP6GE is sourced from the original manufacturer or authorized distributors?

All HMC1033LP6GE products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that HMC1033LP6GE meets industry standards.

7.What is the process for return or replacement of HMC1033LP6GE?

All HMC1033LP6GE units undergo pre-shipment inspection (PSI). If there is an issue with HMC1033LP6GE, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The HMC1033LP6GE part is unused and in its original packaging.

Return procedure for HMC1033LP6GE:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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