Analog Devices Inc. DC1190A-B

Overview

DC1190A-B from Analog Devices (formerly Linear Technology) is an evaluation board for the LTC2366 3Msps, 12-bit serial sampling ADC in TSOT-23-8 package. It enables rapid characterization of dynamic performance (72dB SINAD, –80.3dB THD at 3Msps), low-power operation (2.6mA @ 3V), and flexible reference/digital I/O (VREF = 1.4V to VDD, OVDD = 1V to VDD). Designed for compact, battery-operated data acquisition systems requiring high-speed, single-supply analog-to-digital conversion.

For engineers reviewing the DC1190A-B datasheet, DC1190A-B pinout, DC1190A-B application, or DC1190A-B equivalent, this page delivers verified hardware interface details, real-world timing behavior (tTHROUGHPUT = 333ns), thermal design guidance (θJA = 250°C/W), and direct comparison with alternative evaluation platforms supporting LTC2365/LTC2366 family devices.

Technical Context

The DC1190A-B implements a complete signal chain around the LTC2366, featuring precision passive filtering, optimized PCB layout for 3Msps sampling integrity, and configurable power delivery (3V supply with 10µF/4.7µF bypassing per VDD/OVDD/VREF). Its design isolates analog and digital ground planes while maintaining controlled-impedance SCK/SDO routing to minimize jitter-induced SNR degradation.

It supports both standard SPI/MICROWIRE serial protocols and sleep-mode validation (0.1µA typical ICC in sleep), with on-board test points enabling direct probing of AIN, VREF, OVDD, and SDO waveforms under full throughput conditions - critical for medical imaging and handheld terminal interface development where latency and noise floor are system-critical.

Key Specifications

Availability

DC1190A-B is available at Aetrix Electronics and suitable for medical imaging systems, handheld terminal interfaces, battery-operated data loggers, and automotive sensor signal conditioning requiring stable component supply and proven evaluation platform traceability.

Supply support for DC1190A-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. is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving industrial, automotive, communications, and healthcare markets.

The DC1190A-B belongs to Analog Devices' Linear Technology legacy evaluation board portfolio, specifically engineered to accelerate prototyping and validation of ultra-low-power, high-speed SAR ADCs in space-constrained applications.

FAQ

What is the primary function of the DC1190A-B evaluation board?

The DC1190A-B evaluation board is designed exclusively to demonstrate and validate the performance of the LTC2366 12-bit, 3Msps serial ADC. It provides a fully assembled, tested, and characterized hardware platform with optimized layout, proper decoupling, and accessible test points - enabling engineers to measure real-world parameters like SINAD, THD, and throughput timing without custom PCB development. The DC1190A-B does not contain active circuitry beyond what is required to operate the LTC2366.

Does the DC1190A-B support both LTC2365 and LTC2366 devices?

No - the DC1190A-B is specifically configured for the LTC2366 (3Msps version) in the 8-lead TSOT-23 package. While the LTC2365 shares the same pinout and package, its lower maximum sampling rate (1Msps) and reduced clock frequency requirement (16MHz vs 48MHz) mean the DC1190A-B's layout and timing margins are optimized for the higher-speed LTC2366. Using the DC1190A-B with the LTC2365 is possible but not validated or recommended for production-level characterization.

What power supply requirements must be met to operate the DC1190A-B correctly?

The DC1190A-B requires a clean, regulated 3V ±5% DC supply capable of delivering ≥50mA peak current. This supply powers the LTC2366's VDD, OVDD, and VREF pins through onboard filtering (10µF + 0.1µF on VDD; 4.7µF + 0.1µF on OVDD and VREF). Supply ripple must be <10mVpp to preserve the LTC2366's 72dB SINAD performance. The board does not include voltage regulation - external supply must meet these specifications before connection.

Can the DC1190A-B be used to evaluate sleep mode functionality of the LTC2366?

Yes - the DC1190A-B supports full validation of the LTC2366's sleep mode, which draws only 0.1µA typical supply current. The board provides direct access to the CS pin and includes pull-up/pull-down options to control chip select assertion. When CS remains high and no SCK activity occurs, the LTC2366 enters sleep mode as specified in the datasheet. Current consumption can be measured via the VDD test point using a picoammeter, confirming the DC1190A-B enables accurate low-power state verification for battery-operated systems.

Is the DC1190A-B compatible with standard SPI host controllers?

Yes - the DC1190A-B implements a standard 3-wire SPI interface (CS, SCK, SDO) compatible with MCU, FPGA, and DSP hosts. It supports SPI Mode 0 (CPOL = 0, CPHA = 0) with MSB-first 16-bit frame format (two leading zeros + 12-bit result + two trailing zeros). Timing adheres to LTC2366 specifications: tSCK ≥ 20.8ns (48MHz max SCK), t4 ≤ 15ns data setup, and t7 ≤ 5ns hold. No level-shifting or protocol translation is needed when interfacing with 3V-tolerant SPI peripherals.