Analog Devices Inc. DC1009A-C

Overview

DC1009A-C from Analog Devices (formerly Linear Technology) is a 14-lead DFN evaluation board for the LTC2486 16-bit delta-sigma ADC with Easy Drive input current cancellation, programmable gain (1–256), integrated temperature sensor (±2°C absolute accuracy), and simultaneous 50Hz/60Hz rejection. It enables direct digitization of rail-to-rail, high-impedance sensor signals in industrial instrumentation and process control systems.

For engineers reviewing the DC1009A-C datasheet, DC1009A-C pinout, DC1009A-C application, or DC1009A-C equivalent, this page provides verified board-level specifications, SPI interface timing, on-board reference and filtering, thermal calibration support, and compatibility with LTC2486CDE/IDE variants - all critical for evaluating high-accuracy, low-noise analog acquisition in embedded measurement designs.

Technical Context

The DC1009A-C implements the LTC2486 in its standard 4mm × 3mm DFN-14 package with exposed pad grounded, using a 2.7V–5.5V single supply. It routes all 14 pins-including CH0–CH3, COM, REF+, REF−, SDO, SDI, SCK, CS, fO, VCC, and GND-to test points and edge connectors, supporting both internal and external oscillator modes and full 4-wire SPI communication.

Board-level design includes 10µF tantalum + 0.1µF ceramic VCC bypassing, 0.1µF REF+–REF− decoupling, and configurable jumper options for reference selection (internal/external), gain setting, and line-frequency rejection mode-enabling rapid validation of LTC2486's 600nV RMS noise, 2ppm INL, and zero-differential-input-current operation across temperature and source impedance conditions.

Key Specifications

Availability

DC1009A-C is available at Aetrix Electronics and suitable for industrial process control, precision instrumentation, environmental monitoring, and embedded sensor data acquisition requiring stable component supply and validated reference designs.

Supply support for DC1009A-C 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. (acquired Linear Technology in 2017) is a global leader in high-performance analog, mixed-signal, and digital signal processing technologies for precision measurement and control applications.

The DC1009A-C belongs to Analog Devices' LTC evaluation board family, designed specifically to accelerate development with Linear's ultra-precision delta-sigma ADCs-emphasizing ease of use, low-noise layout fidelity, and full functional validation of key features like Easy Drive input cancellation and simultaneous 50Hz/60Hz rejection.

FAQ

What is the primary function of the DC1009A-C evaluation board?

The DC1009A-C evaluation board is a fully assembled and tested platform for evaluating the LTC2486 16-bit delta-sigma ADC. It provides immediate access to all device pins, pre-installed power and reference conditioning, and jumper-configurable operating modes-enabling rapid validation of Easy Drive input current cancellation, programmable gain (1–256), and simultaneous 50Hz/60Hz rejection without custom PCB design. The DC1009A-C supports both LTC2486C and LTC2486I variants.

Does the DC1009A-C support both internal and external oscillator modes for the LTC2486?

Yes, the DC1009A-C supports both internal and external oscillator configurations for the LTC2486. The fO pin is accessible via test point and header, allowing connection to ground (for internal 307.2kHz oscillator) or an external clock source (10kHz–1MHz). Board-level routing and decoupling comply with LTC2486 datasheet requirements for stable timing in either mode, and the SCK pin functions correctly as output (internal mode) or input (external mode) per LTC2486 specification.

How does the DC1009A-C handle reference voltage configuration for the LTC2486?

The DC1009A-C provides flexible reference configuration via on-board jumpers: users can select between the LTC2486's internal reference (when enabled) or an external reference applied to REF+ and REF−. A 0.1µF capacitor is installed across REF+–REF− per datasheet recommendations, and the board includes dedicated test points and header pins for both reference inputs. This ensures accurate full-scale range setting (±0.5·VREF/Gain) and supports VREF from 0.1V to VCC.

Can the DC1009A-C be used to evaluate the LTC2486's integrated temperature sensor?

Yes, the DC1009A-C fully supports evaluation of the LTC2486's on-chip temperature sensor. The board routes the necessary internal PTAT signal path and provides access to the sensor's output via dedicated test points. With 1/2°C resolution and ±2°C absolute accuracy over –40°C to 85°C, the sensor can be read directly through the same SPI interface used for analog channel conversions-no additional hardware or calibration is required to validate thermal measurement performance on the DC1009A-C.

What power supply requirements must be met when using the DC1009A-C?

The DC1009A-C requires a clean, regulated 2.7V–5.5V DC supply connected to its VCC and GND headers. It incorporates the exact bypassing specified in the LTC2486 datasheet: a 10µF tantalum capacitor in parallel with a 0.1µF ceramic capacitor placed adjacent to the LTC2486's VCC pin. Supply current ranges from 1µA (sleep mode) to 275µA (conversion mode), and the board's layout maintains low-impedance grounding via the exposed pad soldered to the PCB ground plane.