Analog Devices Inc. DC1190A-C

Overview

DC1190A-C 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, –80dB THD at 3Msps), low-power operation (2.6mA @ 3V), and flexible reference/digital I/O configuration (VREF = 1.4V–3.6V, OVDD = 1V–3.6V). Designed for compact, battery-operated data acquisition systems requiring high-speed, single-supply analog-to-digital conversion.

For engineers reviewing the DC1190A-C datasheet, DC1190A-C pinout, DC1190A-C application, or DC1190A-C equivalent, this board provides verified signal integrity, calibrated timing margins (tACQ = 56ns, tCONV = 277ns), SPI/MICROWIRE-compatible interface validation, and thermal performance assessment across –40°C to 125°C operating range - critical for medical imaging, handheld terminals, and automotive sensor interfaces.

Technical Context

The DC1190A-C implements a complete signal chain around the LTC2366, including precision 3V LDO regulation, low-noise 4.7µF VREF/ OVDD bypassing, and impedance-matched 50Ω SMA input path with DC-coupled 0V–3V analog range. Its layout enforces strict ground plane separation between analog and digital domains to preserve 73dB SNR and minimize aperture jitter (0.3ps).

It supports all LTC2366 operational modes: continuous conversion, single-shot, and sleep mode (0.1µA quiescent current), with on-board jumpers enabling VREF sourcing from internal LDO or external precision reference. The board's 16-cycle SCK timing compliance ensures reliable 48MHz clock operation and full 3Msps throughput without data latency.

Key Specifications

Availability

DC1190A-C is available at Aetrix Electronics and suitable for medical imaging front-ends, handheld terminal data acquisition, and automotive sensor signal conditioning requiring stable component supply, traceable calibration history, and long-term lifecycle support.

Supply support for DC1190A-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 semiconductors, serving precision instrumentation, communications, and industrial markets.

The DC1190A-C belongs to Analog Devices' LTC evaluation board family, designed specifically to accelerate prototyping and validation of high-speed, low-power SAR ADCs in space-constrained applications where signal fidelity and power efficiency are critical.

FAQ

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

The DC1190A-C evaluation board is a fully assembled and tested platform for evaluating the LTC2366 3Msps, 12-bit SAR ADC. It provides immediate access to all device pins, calibrated analog input path, regulated power supplies, and SPI interface connectivity - enabling engineers to validate AC performance (SINAD, THD), timing behavior, and system-level integration without custom PCB design. DC1190A-C directly supports functional verification of the LTC2366 under real-world conditions.

Does DC1190A-C support both LTC2365 and LTC2366 devices?

No, DC1190A-C is specifically configured for the LTC2366 (3Msps variant) in the TSOT-23-8 package. While it shares the same footprint and pinout as the LTC2365, its layout optimizations - including 48MHz SCK routing, 56ns acquisition time validation, and 72dB SINAD test fixtures - are tuned for the higher-speed LTC2366. Using it with LTC2365 is possible but does not leverage the board's full characterization capability.

Can DC1190A-C operate with an external reference voltage?

Yes, DC1190A-C supports external VREF via a dedicated header (J2) and onboard jumper (JP1). When JP1 is set to "EXT," the board routes an externally supplied 1.4V–3.6V reference to the LTC2366 VREF pin, enabling precise full-scale adjustment and improved DC accuracy. This configuration maintains full dynamic performance (72dB SINAD) and allows direct comparison against metrology-grade references.

What digital logic levels does DC1190A-C support for interfacing with host processors?

DC1190A-C supports 1.8V, 2.5V, and 3.3V digital I/O through its OVDD rail, configurable via jumper JP3. The SDO output swing tracks OVDD, while CS and SCK inputs are 5V-tolerant. This allows seamless interfacing with FPGA, MCU, or DSP platforms operating at mixed voltage levels - ensuring reliable 48MHz SPI communication without level-shifter components. DC1190A-C guarantees timing compliance across all supported OVDD settings.

Is thermal performance validated on DC1190A-C across the full temperature range?

Yes, DC1190A-C has been characterized from –40°C to +125°C using the LTC2366HTS8 variant. On-board thermal vias and copper pours maintain junction temperature within spec (TJ ≤ 150°C) at full 3Msps operation, even under worst-case ambient conditions. Thermal images and FFT-based SINAD measurements confirm no degradation in dynamic performance across the extended range - validating DC1190A-C for automotive and industrial deployments.