Analog Devices Inc. DC552A

Overview

DC552A from Analog Devices (formerly Linear Technology) is a demonstration circuit board for the LTC1420CGN 12-bit, 10MSPS analog-to-digital converter. It provides a validated PCB layout with configurable reference (VREF = 2.048V or 4.096V), programmable PGA gain (1× or 2×), dual/single-supply operation, and buffered digital outputs - used for rapid evaluation of high-speed ADC performance in precision data acquisition systems.

For engineers reviewing the DC552A datasheet, DC552A pinout, DC552A application, or DC552A equivalent, key selection considerations include its support for 10MSPS sampling, ±2.5V or ±5V input ranges via jumper-configurable SENSE and GAIN pins, 2's complement/binary output coding, and compatibility with 3V–5V digital output supplies (OVDD/VCC).

Technical Context

DC552A implements the LTC1420CGN in a fully assembled, test-ready configuration with discrete RC input filtering (R18/C6), 50Ω clock termination (R17), and a 74ACT16373 transparent latch for output buffering. The board supports both single-supply (+5V VDD, GND) and dual-supply (+5V VDD, −5V VSS) analog operation, with VCM fixed at +2.5V for single-supply mode.

Reference voltage selection (2.048V or 4.096V) is achieved via JP1–JP3 SENSE jumpers; PGA gain (1× or 2×) is set by JP4; differential or single-ended analog input is configured via JP5; and output coding format (2's complement or straight binary) is selected via JP6 - all without soldering or component changes.

Key Specifications

Availability

DC552A is available at Aetrix Electronics and suitable for precision data acquisition, high-speed sensor interfacing, and mixed-signal prototyping requiring stable component supply and validated reference design implementation.

Supply support for DC552A 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 semiconductor company specializing in high-performance analog, mixed-signal, and digital signal processing technologies.

The DC552A belongs to Analog Devices' demonstration circuit (DC) series, designed to accelerate evaluation and system integration of precision ADCs like the LTC1420CGN in test, measurement, and instrumentation applications.

FAQ

What is the primary function of the DC552A demonstration circuit?

The DC552A demonstration circuit is a fully assembled evaluation platform for the LTC1420CGN 12-bit, 10MSPS ADC. It enables immediate functional validation, AC performance testing, and layout reference extraction. The DC552A includes all necessary support circuitry - input filtering, clock termination, reference configuration, PGA gain selection, and digital output latching - allowing engineers to assess the DC552A in real-world signal chain conditions without custom PCB development.

Does the DC552A support both single-supply and dual-supply analog operation?

Yes, the DC552A supports both configurations. For single-supply operation, connect VDD = +5V and VSS = GND, with JP5 set to the right two pins to tie −AIN to VCM (+2.5V). For dual-supply operation, connect VDD = +5V and VSS = −5V, and set JP5 to the left two pins to tie −AIN to GND. The DC552A's analog section is fully configurable for either mode using on-board jumpers without hardware modification.

How is the reference voltage (VREF) configured on the DC552A?

VREF on the DC552A is set via three SENSE pin jumpers (JP1–JP3). JP1 connects SENSE to GND for VREF = 4.096V; JP3 connects SENSE to VREF for VREF = 2.048V; JP2 leaves SENSE open for external VREF drive (≈1kΩ input impedance). These options directly determine the full-scale input range of the LTC1420CGN within the DC552A, and are user-selectable without soldering.

What digital output interface does the DC552A provide?

The DC552A provides parallel CMOS-compatible digital outputs via a 40-pin header, delivering all 12 data bits, an overflow flag (OVF), and a buffered clock (CLKOUT) for synchronous latching. Output coding (2's complement or straight binary) is selected via JP6. The 74ACT16373 latch ensures clean, edge-aligned data valid timing - critical for reliable capture by FPGA or microcontroller interfaces when using the DC552A.

Can the DC552A be used with a 3.3V digital supply?

Yes, the DC552A supports OVDD and VCC supplies from +3V to +5V, making it compatible with 3.3V logic families. Both the LTC1420CGN's digital output drivers and the 74ACT16373 latch operate correctly across this range. When using 3.3V, ensure the host system's input thresholds align with ACT-series logic levels, and maintain short, impedance-controlled traces from the DC552A's 40-pin output header to preserve signal integrity during high-speed data capture.