Analog Devices Inc. 119351-HMC862LP3E

Overview

The HMC862LP3E from Analog Devices (originally Hittite Microwave) is a low-noise, programmable RF frequency divider IC supporting division ratios N = 1, 2, 4, and 8 across a 0.1–15 GHz input range. It delivers -153 dBc/Hz SSB phase noise at 100 kHz offset (Fin = 6 GHz, N = 2), operates from dual +5 V supplies, and uses CMOS-compatible control bits (S0–S2) for ratio selection. It serves as a core clock conditioning element in wideband microwave transceivers.

For engineers reviewing the HMC862LP3E datasheet, HMC862LP3E pinout, HMC862LP3E application, or HMC862LP3E equivalent, key selection criteria include its 15 GHz max input frequency, programmable integer division, ultra-low phase noise floor, differential RF input/output capability, and 3×3 mm leadless SMT package compatibility with high-frequency PCB layout requirements.

Technical Context

The HMC862LP3E implements a broadband static divider architecture with differential input (IN/NIN) and complementary output (OUT/NOUT), enabling single-ended or true differential operation. Its internal logic accepts three CMOS control bits (S0–S2) to select N = 1, 2, 4, or 8, with defined VIH/VIL thresholds (3–5 V / 0–0.4 V) and sequencing requirement (Vcc applied before logic).

It features dual 5 V analog supplies (Vcc1/Vcc2), 16-pin 3×3 mm QFN package with exposed ground paddle, and specified operation from -40 °C to +85 °C. Absolute maximum RF input power is 13 dBm, and ESD rating is Class 1A (HBM), requiring handling per electrostatic-sensitive device protocols.

Key Specifications

Pinout & Package

16-lead 3×3 mm leadless QFN (LP3E) package with exposed ground paddle; RoHS-compliant, MSL1, matte tin finish. Requires soldering of all ground leads and ground paddle to PCB RF ground per Hittite application note land pattern guidance.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar programmable RF divider applications.

Compared with HMC862LP3E, HMC988LP3E extends usable bandwidth and input power headroom while maintaining full pin and logic compatibility; ADF4002BRUZ offers integrated PLL functionality but lacks direct RF input capability above 200 MHz and cannot substitute in high-frequency divider roles.

Availability

HMC862LP3E is available at Aetrix Electronics and suitable for satellite communication systems, point-to-point radios, and military radar platforms requiring stable component supply across extended temperature ranges and high-frequency performance continuity.

Supply support for HMC862LP3E 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 maintains its high-frequency RF product portfolio, including microwave ICs, MMICs, and integrated solutions for defense, communications, and instrumentation.

The HMC862LP3E belongs to Hittite's legacy Frequency Dividers & Detectors family, designed specifically for low-phase-noise, wideband RF signal conditioning in demanding microwave systems where discrete prescaling is impractical.

FAQ

What is the maximum input frequency supported by the HMC862LP3E?

The HMC862LP3E supports an RF input frequency range from 0.1 GHz to 15 GHz. This upper limit is verified under standard test conditions (TA = +25 °C, Vcc = +5 V) with sine or square wave inputs. Operation above 15 GHz is not characterized and may result in degraded output power, increased phase noise, or failure to divide reliably. The device is optimized for microwave bands up to K-band.

How is the division ratio programmed on the HMC862LP3E?

The HMC862LP3E uses three CMOS-compatible digital control inputs-S0, S1, and S2-to select division ratios N = 1, 2, 4, or 8 according to a defined truth table. Logic high is 3–5 V; logic low is 0–0.4 V. Power supplies Vcc1 and Vcc2 must be fully established before asserting control signals to ensure correct initialization. The HMC862LP3E does not support serial or SPI programming.

Does the HMC862LP3E support differential RF input and output operation?

Yes, the HMC862LP3E supports both single-ended and differential operation. Pins IN and NIN form a differential RF input pair; OUT and NOUT form a complementary differential output pair. In differential mode, NIN and NOUT must be DC-blocked, and the input/output paths should be impedance-matched to 50 Ω with equal trace lengths to preserve phase balance. The HMC862LP3E achieves optimal phase noise performance in differential configuration.

What is the recommended PCB layout practice for the HMC862LP3E?

For the HMC862LP3E, the exposed ground paddle and all GND pins (1, 4, 8, 9, 12, 14, 15) must be soldered to a solid RF ground plane using ≥8 thermal vias (0.3 mm diameter, spaced ≤1 mm apart). RF traces require controlled 50 Ω impedance; DC-blocking capacitors (e.g., ATC 0402) must be placed adjacent to IN, NIN, OUT, and NOUT. Power supplies Vcc1/Vcc2 require local 100 nF + 4.7 µF decoupling directly at the pins, per Hittite Application Note AN-1113.

Is the HMC862LP3E still in active production?

The HMC862LP3E is marked "OBSOLETE" in its official datasheet revision v03.1210, indicating it has been discontinued by Analog Devices. However, Aetrix Electronics maintains legacy inventory and provides traceable, tested units for ongoing production and repair programs. Lifecycle support includes obsolescence monitoring, cross-reference assistance, and evaluation board (119351) availability for functional validation of the HMC862LP3E in existing designs.