Analog Devices Inc. HMC832ALP6GETR

Overview

HMC832ALP6GETR from Analog Devices is a 3.3 V, wideband fractional-N PLL with integrated VCO, operating from 25 MHz to 3000 MHz. It delivers ultralow phase noise (−110 dBc/Hz at 10 kHz offset, f_O = 1600 MHz), supports 100 MHz maximum phase detector rate, and features 24-bit frequency resolution (3 Hz typical). It serves as a tunable reference source in microwave radios and cellular infrastructure where spurious-free performance is critical.

For engineers reviewing the HMC832ALP6GETR datasheet, HMC832ALP6GETR pinout, HMC832ALP6GETR application, or HMC832ALP6GETR equivalent, key selection factors include its exact frequency mode (0 Hz error), programmable performance modes (low current vs. high performance), differential/single-ended RF output configuration, and 40-lead 6 mm × 6 mm LFCSP package compatibility with HMC830 footprint.

Technical Context

The HMC832ALP6GETR integrates a Σ-Δ modulator and phase detector capable of 100 MHz operation, enabling wide loop bandwidths and fast frequency hopping. Its VCO fundamental range spans 1500–3000 MHz, extended to 25–3000 MHz via an on-chip divider (÷1, ÷2, ÷4, ..., ÷62) with selectable output return loss and 12 dB gain control in 1 dB steps.

It supports dual SPI interface voltage levels (1.8 V or 3.3 V), includes automatic output mute during unlock, and implements programmable performance technology-allowing real-time trade-off between current consumption (180–237 mA) and noise floor (−160 dBc/Hz) via register-controlled modes.

Key Specifications

Pinout & Package

Package: 40-lead, 6 mm × 6 mm leadless chip-scale package (LFCSP) with exposed thermal pad (EP) requiring RF/dc ground connection.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar wideband fractional-N PLL with integrated VCO applications.

Compared with HMC832ALP6GETR, HMC830LP6GE offers pin compatibility but sacrifices phase noise and PFD speed, while ADF4351BCPZ trades spectral purity and feature set for smaller size and wider frequency range-neither provides exact frequency mode or −110 dBc/Hz closed-loop performance.

Availability

HMC832ALP6GETR is available at Aetrix Electronics and suitable for cellular infrastructure, microwave radios, and communications test equipment requiring stable component supply, long-term lifecycle support, and traceable sourcing for production programs.

Supply support for HMC832ALP6GETR 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 is a global leader in high-performance analog, mixed-signal, and RF ICs, serving precision instrumentation, communications, and defense markets since 1965.

The HMC832ALP6GETR belongs to Analog Devices' Hittite Microwave product line, designed specifically for high-frequency wireless infrastructure and test equipment demanding ultra-low phase noise, wideband agility, and integrated VCO simplicity.

FAQ

What is the maximum phase detector frequency supported by the HMC832ALP6GETR?

The HMC832ALP6GETR supports a maximum phase detector frequency of 100 MHz in both fractional and integer modes. This capability enables wide loop bandwidths and fast frequency settling-critical for agile hopping applications in microwave radios and test equipment. The actual achievable PFD rate depends on the selected N-divider value and must respect the minimum N constraint (e.g., f_VCO/20 in fractional mode). Operation at 100 MHz requires proper loop filter design and stable reference input.

Does the HMC832ALP6GETR support exact frequency generation with zero error?

Yes, the HMC832ALP6GETR implements an exact frequency mode using its Σ-Δ modulator to achieve 0 Hz frequency error. This mode eliminates long-term drift and quantization-induced offsets, making it ideal for precision timing applications such as calibration sources and metrology-grade signal generators. The feature is enabled via register configuration (Exact Frequency Mode Register) and operates across the full 25–3000 MHz output range.

How does the programmable performance technology affect power consumption and noise in the HMC832ALP6GETR?

The HMC832ALP6GETR's programmable performance technology allows selection between low-current mode (180–205 mA) and high-performance mode (219–237 mA), directly trading current draw for noise floor improvement. In high-performance mode, the device achieves −160 dBc/Hz noise floor and −110 dBc/Hz phase noise at 10 kHz offset; low-current mode raises the noise floor by ~1–2 dB but reduces power by up to 15%. Both modes retain full functionality including exact frequency mode and 100 MHz PFD support.

Can the HMC832ALP6GETR generate frequencies below 100 MHz, and how is harmonic suppression achieved?

Yes, the HMC832ALP6GETR generates frequencies as low as 25 MHz using its VCO output divider (÷62 at 1550 MHz yields 25 MHz). Harmonic suppression is achieved through internal architecture: second/third/fourth harmonics are −40/−6/−43 dBc at 25 MHz output, significantly better than typical discrete solutions. The device also supports external filtering, and its low-noise floor (−160 dBc/Hz) prevents contribution to mixer or modulator noise floors in transmitter chains.

What are the SPI interface voltage options for the HMC832ALP6GETR, and how are they configured?

The HMC832ALP6GETR supports both 1.8 V and 3.3 V SPI interface operation. The voltage level is configured via Register 0x0B[22]: setting bit 22 to 0 selects 1.8 V drive, and setting it to 1 selects 3.3 V drive. The LD/SDO pin output level follows this setting, while SEN, SDI, and SCK accept either logic level. Maximum SCK clock rate is 50 MHz in CMOS mode and 10 MHz in open-drain mode, with timing parameters fully specified in the datasheet.