Analog Devices Inc. DC2496A-KIT

Overview

DC2496A-KIT from Analog Devices is an evaluation kit for the LTC6432-15 ultra-high-linearity differential IF/ADC driver amplifier. It enables rapid characterization of the 15.2dB fixed-gain, 100kHz–1.4GHz SiGe amplifier in differential 100Ω systems, supporting OIP3 up to 54.5dBm at 1MHz and 48.0dBm at 150MHz into a 100Ω diff load, with 3.0dB noise figure at 240MHz - ideal for wideband receiver front-ends driving high-resolution ADCs.

For engineers reviewing the DC2496A-KIT datasheet, DC2496A-KIT pinout, DC2496A-KIT application, or DC2496A-KIT equivalent, this kit provides validated test circuitry including baluns, RF chokes, feedback capacitors, and decoupling networks optimized for 13-octave bandwidth (100kHz–1.4GHz), enabling accurate S-parameter, OIP3, P1dB, and noise figure measurements using standard 50Ω single-ended lab equipment.

Technical Context

The DC2496A-KIT implements Test Circuit A from the LTC6432-15 datasheet, featuring dual 1:2 baluns to convert between 50Ω single-ended test ports and the device's native 100Ω differential I/O. It integrates frequency-optimized RF chokes (240nH + 470µH series output network), X8R-grade 1µF DC blocking capacitors, 1µF feedback capacitors, and 1000pF + 0.1µF VCC bypassing - all selected to preserve linearity and stability across 100kHz–1.4GHz.

Thermal management is supported via the LTC6432-15's exposed pad soldered to a multi-via ground plane, while optional T_DIODE monitoring and NFILT1/NFILT2 low-frequency noise filtering are fully implemented. The board supports both Grade A and Grade B LTC6432-15 variants and operates from a single 5V supply.

Key Specifications

Availability

DC2496A-KIT is available at Aetrix Electronics and suitable for RF receiver design, high-speed ADC interface validation, and wideband test instrument development requiring stable component supply, full-band characterization capability, and production-ready reference layout.

Supply support for DC2496A-KIT 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, Inc. is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving precision instrumentation, communications, and industrial markets.

The DC2496A-KIT belongs to Analog Devices' Linear Technology evaluation kit product line, designed specifically to accelerate prototyping and performance validation of high-linearity RF amplifiers like the LTC6432-15 in demanding IF and ADC driver applications.

FAQ

What is the primary function of the DC2496A-KIT?

The DC2496A-KIT is an evaluation kit for the LTC6432-15 differential amplifier, providing a fully assembled, characterized PCB implementing Test Circuit A from the datasheet. It enables engineers to measure key RF parameters - including S-parameters, OIP3, P1dB, noise figure, and harmonic distortion - across 100kHz–1.4GHz using standard 50Ω test equipment, without requiring custom layout or component selection.

Does the DC2496A-KIT support both Grade A and Grade B versions of the LTC6432-15?

Yes, the DC2496A-KIT is compatible with both LTC6432AIUF-15 and LTC6432BIUF-15 variants. Its layout and component values follow the universal Test Circuit A, which applies to all grades. Performance metrics such as OIP3 will differ per grade (e.g., 54.5dBm min for Grade A at 1MHz), but the DC2496A-KIT hardware itself requires no modification to evaluate either version.

What balun configuration does the DC2496A-KIT use and why?

The DC2496A-KIT uses two 1:2 baluns - one at input and one at output - to transform between the 50Ω single-ended SMA ports and the LTC6432-15's native 100Ω differential I/O impedance. This configuration ensures accurate de-embedded S-parameter measurement and preserves the amplifier's specified 100kHz–1.4GHz bandwidth, matching the exact setup used in the official AC electrical characterization of the DC2496A-KIT.

Why are X8R capacitors specified for DC blocking on the DC2496A-KIT?

X8R dielectric capacitors are used for all six DC blocking positions on the DC2496A-KIT because they maintain stable capacitance and low voltage coefficient down to 100kHz, preventing linearity degradation (e.g., IM3, HD2) that occurs with lower-grade ceramics. This choice directly supports the LTC6432-15's specified 54.5dBm OIP3 at 1MHz and ensures measurement fidelity across the full 13-octave bandwidth of the DC2496A-KIT.

Can the DC2496A-KIT be used for production-level testing or only bench evaluation?

The DC2496A-KIT is engineered for both bench evaluation and production-level RF testing. Its layout follows best practices for RF integrity - including controlled-impedance traces, optimized grounding, and thermal via arrays - and its components (e.g., X8R caps, wire-wound chokes) are selected for repeatability and stability. While not a production module, it serves as a validated reference platform for characterizing LTC6432-15 units in QA, pre-compliance testing, or system integration workflows.