Analog Devices Inc. EVAL-AD7175-2SDZ

Overview

EVAL-AD7175-2SDZ from Analog Devices is a full-featured evaluation kit for the AD7175-2 24-bit, 250 kSPS sigma-delta ADC with integrated rail-to-rail analog input buffers, 20 μs settling time, and on-board 5 V/3.3 V/–2.5 V power regulation. It supports PC-based control via the EVAL-SDP-CB1Z system demonstration platform and enables dc time-domain analysis including waveform graphs, histograms, and noise performance evaluation.

For engineers reviewing the EVAL-AD7175-2SDZ datasheet, EVAL-AD7175-2SDZ pinout, EVAL-AD7175-2SDZ application, or EVAL-AD7175-2SDZ equivalent, this board delivers rapid validation of high-precision ADC performance in sensor signal chains, precision instrumentation, and industrial process control systems requiring low-noise, high-resolution data acquisition.

Technical Context

The EVAL-AD7175-2SDZ implements a complete hardware testbed for the AD7175-2, featuring dual LDOs (ADP7118 ×2) for regulated 5 V/3.3 V AVDD/IOVDD, an ADP7182 –2.5 V LDO for split-supply AVSS operation, and an ADR445 external 5 V reference. It includes configurable analog input routing via solder links (SL4–SL11) and jumper options (LK1–LK9) to support single- or split-supply modes, buffered/unbuffered inputs, and on-board noise test shorting.

Communication occurs over SPI (CS, SCLK, DIN, DOUT/RDY) between the AD7175-2 and the ADSP-BF527 processor on the EVAL-SDP-CB1Z controller board. Standalone operation is supported via test points and PMOD-compatible header A7, enabling integration with custom digital capture systems without host PC dependency.

Key Specifications

Availability

EVAL-AD7175-2SDZ is available at Aetrix Electronics and suitable for precision sensor interface validation, industrial data acquisition system prototyping, and high-resolution ADC performance benchmarking requiring stable component supply and full technical documentation support.

Supply support for EVAL-AD7175-2SDZ 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, headquartered in Norwood, MA, with design expertise spanning precision measurement, signal conditioning, and data conversion.

The EVAL-AD7175-2SDZ belongs to Analog Devices' precision ADC evaluation platform family, designed specifically to accelerate development of high-accuracy measurement systems in industrial automation, scientific instrumentation, and energy monitoring applications.

FAQ

What is the primary function of the EVAL-AD7175-2SDZ?

The EVAL-AD7175-2SDZ is a dedicated evaluation kit for the AD7175-2 24-bit, 250 kSPS sigma-delta ADC. Its primary function is to enable rapid, accurate characterization of the AD7175-2's performance-including noise, linearity, settling time, and reference behavior-using PC-based software, configurable power modes, and flexible analog input routing. The EVAL-AD7175-2SDZ does not operate as a standalone data acquisition system but serves exclusively as a validation platform for the underlying AD7175-2 IC.

Which controller board is required to operate the EVAL-AD7175-2SDZ?

The EVAL-AD7175-2SDZ requires the EVAL-SDP-CB1Z System Demonstration Platform (SDP-B) controller board for USB-connected operation. This board provides SPI communication, power sequencing, and firmware interface between the host PC and the AD7175-2 on the EVAL-AD7175-2SDZ. While standalone use is possible via test points or the PMOD header A7, full functionality-including GUI-driven configuration and analysis-depends on the EVAL-SDP-CB1Z.

Does the EVAL-AD7175-2SDZ support both single-supply and split-supply configurations for the AD7175-2?

Yes, the EVAL-AD7175-2SDZ supports both single-supply and split-supply operation for the AD7175-2. Single-supply mode uses 7–9 V input regulated to 5 V (AVDD1/AVDD2) and 3.3 V (IOVDD). Split-supply mode adds a –2.5 V AVSS rail generated by the ADP7182 LDO. Configuration is achieved via jumper settings (LK1, LK2), solder links (SL2–SL5), and removal of R49–R51, as detailed in the UG-AD7175-2 user guide.

What analog input options are available on the EVAL-AD7175-2SDZ?

The EVAL-AD7175-2SDZ provides two physical analog input paths: an 8-pin Phoenix terminal block (J6) and five SMB/SMA connectors (A0–A4). Inputs route directly to the AD7175-2 pins unless modified by solder links SL4–SL11, which allow reconfiguration-for example, connecting AIN4 to REFOUT or AVSS for single-ended testing. All inputs support the AD7175-2's integrated rail-to-rail input buffers and full differential or pseudo-differential modes.

Can the EVAL-AD7175-2SDZ be used without installing software or connecting to a PC?

No-the EVAL-AD7175-2SDZ is not functional without either the EVAL-AD7175-2SDZ evaluation software (for PC-based operation) or an external digital capture system (for standalone mode). The board lacks onboard memory, display, or autonomous sampling logic. Even in standalone mode, users must provide their own SPI master, clock source, and data capture infrastructure-making the software and EVAL-SDP-CB1Z essential for standard evaluation workflows involving the EVAL-AD7175-2SDZ.