Analog Devices Inc. DC2076A-A

Overview

DC2076A-A from Analog Devices (formerly Linear Technology) is a demonstration circuit for the LTC6430AIUF-20 20 dB fixed-gain RF/IF differential amplifier, optimized for 100–350 MHz operation with 50 Ω input/output impedance, ±0.2 dB gain flatness, and –68 dBc SFDR at 210 MHz. It serves as an ADC driver in high-speed data acquisition systems.

For engineers reviewing the DC2076A-A datasheet, DC2076A-A pinout, DC2076A-A application, or DC2076A-A equivalent, this board enables rapid evaluation of the LTC6430AIUF-20's performance in wideband receiver front-ends, IF sampling architectures, and direct-conversion transceivers under real-world layout and matching conditions.

Technical Context

The DC2076A-A implements a fully populated, impedance-matched evaluation platform for the LTC6430AIUF-20, featuring ADT2-1T+ and ADTL2-18 broadband transformers for single-ended-to-differential conversion and calibration path routing. It supports two frequency configurations: Assembly-A (100–350 MHz) and Assembly-B (300–1000 MHz), selected via transformer placement.

Power is supplied at 4.75–5.25 V to the LTC6430AIUF-20's VCC pins (9, 22), with all DNC pins reserved for linear operation only. The board includes optional components (e.g., C6, C13, R3) to support gain adjustment, DC offset calibration, and external filter integration.

Key Specifications

Availability

DC2076A-A is available at Aetrix Electronics and suitable for RF receiver design, IF sampling system validation, and high-speed ADC driver qualification requiring stable component supply and traceable evaluation hardware.

Supply support for DC2076A-A 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. (including legacy Linear Technology products) is a global semiconductor company specializing in high-performance analog, mixed-signal, and RF technologies for precision and high-speed applications.

The DC2076A-A belongs to Analog Devices' demonstration circuit family for RF amplifiers and ADC drivers, designed to accelerate prototyping and characterization of signal chain components in communications, instrumentation, and defense systems.

FAQ

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

The DC2076A-A evaluation board is a ready-to-use platform for characterizing the LTC6430AIUF-20 20 dB gain RF/IF differential amplifier. It provides calibrated single-ended I/O, transformer-based signal conditioning, and a dedicated calibration path - enabling immediate measurement of gain flatness, return loss, SFDR, and noise figure across 100–350 MHz without custom layout. DC2076A-A supports rapid verification of the LTC6430AIUF-20 in real signal chain environments.

Which frequency band does DC2076A-A support out-of-the-box?

DC2076A-A is configured by default for the 100–350 MHz band (Assembly-A), using ADT2-1T+ transformers at T1/T2 positions. Its schematic and bill-of-materials explicitly define component values and layout constraints validated for this range, including ±0.2 dB gain flatness and 50 Ω port match. DC2076A-A can be reconfigured for 300–1000 MHz (Assembly-B) by substituting ADTL2-18 transformers - but that requires manual component replacement and is not the shipped configuration.

Does DC2076A-A include power supply regulation or filtering?

No, DC2076A-A does not include voltage regulation. It accepts a clean 4.75–5.25 V DC supply directly at the VCC test points and relies on external bench power. On-board 0.1 µF 0603 ceramic capacitors provide local high-frequency decoupling at each VCC pin of the LTC6430AIUF-20, consistent with the device's recommended layout. DC2076A-A assumes the user supplies low-noise, well-filtered power - no LDOs, ferrites, or bulk capacitance are integrated.

Can DC2076A-A be used to evaluate the LTC6430AIUF-20's differential output drive capability?

Yes, DC2076A-A fully exercises the LTC6430AIUF-20's differential output stage using ADT2-1T+ transformers to convert +OUT/–OUT to single-ended signals at J2 and J4. The board maintains 50 Ω differential termination through transformer selection and layout, enabling accurate measurement of output balance, common-mode rejection, and harmonic distortion. DC2076A-A's pinout and grounding scheme preserve the LTC6430AIUF-20's specified 100 Ω differential output impedance behavior.

Is DC2076A-A compatible with other members of the LTC6430 family?

DC2076A-A is specifically designed and validated for the LTC6430AIUF-20 (20 dB gain version). While the LTC6430-10 and LTC6430-30 share the same package and pinout, their internal gain-setting networks differ - making DC2076A-A's passive component values (e.g., R1/R5/R6/R7 = 348 Ω) incompatible with those variants without modification. DC2076A-A's documentation and layout do not support drop-in substitution of other LTC6430 gain grades.