Analog Devices Inc. DC2326A-B

Overview

DC2326A-B from Analog Devices (formerly Linear Technology) is an evaluation board for the LTC2345-16 octal, 16-bit, 200ksps simultaneous-sampling SAR ADC. It supports differential SoftSpan™ inputs with ±4.096V, 0–4.096V, ±2.048V, or 0–2.048V per channel, features integrated 4.096V reference and buffer, and operates across –40°C to 125°C. Designed for high-precision industrial data acquisition, it enables rapid validation of signal chain performance in PLCs and medical imaging systems.

For engineers reviewing the DC2326A-B datasheet, DC2326A-B pinout, DC2326A-B application, or DC2326A-B equivalent, this page delivers verified hardware configuration details, supported interface modes (CMOS/LVDS), thermal performance data, and direct guidance on integrating the LTC2345-16 ADC into multi-channel analog front-ends requiring rail-to-rail input overdrive tolerance and 91dB SNR.

Technical Context

The DC2326A-B implements a complete signal chain around the LTC2345-16, including precision passive filtering (0.1µF/2.2µF bypassing), configurable CMOS or LVDS serial I/O termination, and dedicated power sequencing for VDD (5V), OVDD (1.8–5V), and REFBUF (4.096V). Its layout preserves analog/digital isolation and minimizes crosstalk between the eight fully differential input channels.

It supports all LTC2345-16 SoftSpan configurations via on-board jumpers and firmware-selectable CNV timing, enabling per-channel range reconfiguration without hardware changes. The board's exposed pad grounding and thermal vias ensure stable operation at 125°C ambient - critical for industrial process control deployments.

Key Specifications

Availability

DC2326A-B is available at Aetrix Electronics and suitable for industrial process control, programmable logic controllers, medical imaging subsystems, and high-speed data acquisition systems requiring stable component supply and full-temperature-range evaluation capability.

Supply support for DC2326A-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. (acquired Linear Technology in 2017) is a global leader in high-performance analog, mixed-signal, and digital signal processing technologies.

The DC2326A-B belongs to Analog Devices' precision data converter evaluation platform family, engineered to accelerate design-in of high-resolution SAR ADCs in noise-sensitive, multi-channel measurement applications where dynamic range and channel-to-channel isolation are critical.

FAQ

What is the primary function of the DC2326A-B evaluation board?

The DC2326A-B evaluation board is a fully assembled and tested platform designed specifically to evaluate the LTC2345-16 octal, 16-bit, 200ksps simultaneous-sampling SAR ADC. It provides immediate access to all analog inputs, digital interfaces (CMOS/LVDS), reference signals (REFIN/REFBUF), and power domains - enabling engineers to validate timing, noise, crosstalk, and SoftSpan configuration behavior without custom PCB development. DC2326A-B directly supports the LTC2345-16 in its native 48-lead QFN package.

Does DC2326A-B support both CMOS and LVDS interface modes for the LTC2345-16?

Yes, DC2326A-B supports both interface modes via on-board configuration options. The board includes selectable termination networks and level-shifting circuitry to accommodate the LTC2345-16's dual-mode serial I/O: CMOS (1.8V–5V OVDD) and LVDS (2.375V–5.25V OVDD). Jumpers and solder bridges allow users to configure SDO/SCKO/SDI lines for either mode, matching the LTC2345-16's internal register settings. This ensures accurate timing validation for both low-power CMOS and high-noise-immunity LVDS implementations of DC2326A-B.

Can DC2326A-B be used to evaluate the LTC2345-16 at extended temperature ranges?

Yes, DC2326A-B is qualified for operation across –40°C to +125°C, aligning with the LTC2345H grade specification. Its PCB stack-up uses high-Tg FR-4, thermal vias under the exposed pad, and components rated for 125°C operation - including the 47µF REFBUF bypass capacitor and 0.1µF ceramic decoupling caps. This allows full characterization of the LTC2345-16's guaranteed 125°C performance, including INL (±1.25LSB), SNR (91dB typ), and CMRR (102dB typ), as specified in the LTC2345-16 datasheet.

How does DC2326A-B handle reference voltage configuration for the LTC2345-16?

DC2326A-B supports both internal and external reference configurations for the LTC2345-16. By default, it uses the device's internal 2.048V bandgap (REFIN) amplified to 4.096V (REFBUF) with proper 0.1µF/47µF bypassing. For higher accuracy, users can overdrive REFIN with an external 1.25–2.2V reference - the board includes test points and routing to isolate the internal bandgap when needed. All reference paths are impedance-controlled and thermally stabilized to preserve the LTC2345-16's ±0.025%FS full-scale error spec.

Is DC2326A-B compatible with standard Analog Devices evaluation software tools?

Yes, DC2326A-B is fully supported by Analog Devices' Linduino and QuikEval™ software platforms. It connects via USB-to-SPI interface (included cable) and is recognized automatically by the DC2326A-B-specific QuikEval GUI, which provides real-time waveform capture, FFT analysis, histogram generation, and SoftSpan range configuration. Firmware updates and register-level control of the LTC2345-16 - including CNV timing, PD mode, and channel enable/disable - are accessible through the same interface used across Analog Devices' data converter evaluation ecosystem.