Analog Devices Inc. DC2076A-B

Overview

DC2076A-B from Analog Devices (formerly Linear Technology) is a fully assembled, production-ready evaluation board for the LTC6430-20 20 dB differential RF/IF amplifier. It enables rapid characterization of high-linearity performance-including 51.0 dBm OIP3 at 240 MHz, 20.8 dB gain, and 2.9 dB noise figure-into 100 Ω differential loads across 20 MHz to 2060 MHz. Designed for ADC driver, CATV, and LTE signal chain validation, it supports 50 Ω single-ended test equipment via integrated 1:2 baluns.

For engineers reviewing the DC2076A-B datasheet, DC2076A-B pinout, DC2076A-B application, or DC2076A-B equivalent, this board delivers verified wideband small-signal and large-signal measurements-including S-parameters, OIP3 vs frequency, P1dB, HD2/HD3, and thermal stability-without requiring custom RF layout or impedance-matching design.

Technical Context

The DC2076A-B implements Test Circuit A from the LTC6430-20 datasheet, using Mini-Circuits ADT2-IT/ADT2-1P/ADTL2-18 baluns to convert between 50 Ω single-ended instrumentation and the LTC6430-20's native 100 Ω differential I/O. It incorporates 560 nH RF chokes, 1000 pF + 0.1 µF VCC decoupling, and 1000 pF DC-blocking capacitors optimized for 20 MHz–1 GHz operation.

Board-level design includes ground-plane-integrated exposed-pad soldering for thermal management, low-inductance grounding via multiple vias under the QFN pad, and optional T_DIODE monitoring circuitry. All DNC pins on the LTC6430-20 are left floating per specification, and both VCC pins are paralleled to ensure stable 5 V supply delivery.

Key Specifications

Availability

DC2076A-B is available at Aetrix Electronics and suitable for RF front-end validation, high-speed ADC driver qualification, broadband CATV line-up testing, and 700–800 MHz LTE base station development requiring stable component supply and traceable evaluation hardware.

Supply support for DC2076A-B 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. (ADI) is a global leader in high-performance analog, mixed-signal, and RF semiconductor solutions, serving communications, industrial, automotive, and healthcare markets.

The DC2076A-B belongs to ADI's Linear Technology Evaluation Board product line, engineered specifically to accelerate time-to-test for high-frequency signal chain components-enabling immediate measurement of linearity, noise, bandwidth, and thermal behavior without custom PCB design.

FAQ

What is the primary function of the DC2076A-B evaluation board?

The DC2076A-B evaluation board is a ready-to-use platform for characterizing the LTC6430-20 differential RF amplifier. It provides calibrated 50 Ω SMA input/output interfaces, integrated baluns, proper biasing, and thermal management-allowing engineers to immediately measure key RF metrics including OIP3, P1dB, S-parameters, and harmonic distortion without designing custom RF circuitry. The DC2076A-B implements the exact Test Circuit A referenced in the LTC6430-20 datasheet.

Does the DC2076A-B support both A-grade and B-grade LTC6430-20 devices?

Yes, the DC2076A-B is compatible with both LTC6430AIUF-20 and LTC6430BIUF-20 variants. Its layout and component selection meet the full operating specifications for both grades-including OIP3 validation at 380 MHz for A-grade units and wideband gain/noise performance for B-grade units. No hardware modification is required when swapping between grades, as the DC2076A-B does not impose additional matching or filtering that would alter grade-specific performance boundaries.

Can the DC2076A-B be used for 75 Ω CATV applications?

Yes-the DC2076A-B supports 75 Ω CATV amplifier configuration when paired with 1:1.33 baluns (not included on board). The underlying LTC6430-20 device is explicitly specified for high-fidelity 40–1000 MHz 75 Ω CATV amplification per its datasheet Applications section. While the default DC2076A-B uses 1:2 baluns for 50 Ω test compatibility, users can replace them with Mini-Circuits TC1-1-13M+ or similar 1:1.33 transformers to achieve optimal 75 Ω source/load matching and validate CATV-specific metrics like CSO/CTB.

How is thermal performance validated on the DC2076A-B?

The DC2076A-B includes direct access to the LTC6430-20's T_DIODE pin (Pin 16), enabling real-time die temperature monitoring during RF stress testing. By applying 1 mA forward bias and measuring voltage drop (–1.2 mV/°C slope), users correlate thermal rise with output power and ambient conditions. Combined with the board's exposed-pad grounding, thermal vias, and copper pour, this allows empirical validation of junction-to-board thermal resistance (~25°C/W) and confirms safe operation up to 85°C case temperature per datasheet limits.

Is DC2076A-B compatible with automated test equipment (ATE) and network analyzers?

Yes-the DC2076A-B features standard 50 Ω SMA female connectors on both input and output, fully compatible with vector network analyzers (VNAs), spectrum analyzers, and ATE systems. Its Test Circuit A implementation ensures repeatable, de-embeddable S-parameter measurements across 25 MHz–2 GHz. Calibration kits (SOLT or TRL) can be applied directly to the SMA ports, and the board's low group delay variation (<10 ps over 100–1000 MHz) supports phase-sensitive modulation testing such as OFDM and QAM.