Analog Devices Inc. EVAL-AD7328SDZ

Overview

EVAL-AD7328SDZ from Analog Devices is a full-featured evaluation board designed to characterize the AD7328 8-channel, 12-bit-plus-sign successive approximation ADC under real-world conditions including ±10 V/±5 V/±2.5 V/0–10 V input ranges, true differential or pseudo-differential configurations, and up to 1 MSPS sampling rate via high-speed serial interface.

For engineers reviewing the EVAL-AD7328SDZ datasheet, EVAL-AD7328SDZ pinout, EVAL-AD7328SDZ application, or EVAL-AD7328SDZ equivalent, this board enables rapid validation of analog input signal integrity, reference stability, power sequencing behavior, and SPI-compatible digital interface timing with PC-based control via EVAL-SDP-CB1Z.

Technical Context

The EVAL-AD7328SDZ implements on-board power generation for ±15 V (ADP1613), +5 V (ADP3303-5), +3.3 V (ADP190), and +12 V (ADP2301) rails required by the AD7328 and its supporting circuitry, all sequenced and monitored by ADM1185. It integrates AD8597 ultralow-noise op amps for analog input buffering and ADG3308 level shifters to interface 3.3 V SDP logic with variable VDRIVE (2.7–5.25 V).

Hardware configuration is controlled via 23 user-configurable links (LK1–LK23, LK101–LK106, LK701) enabling selection of input termination (51 Ω), signal routing (A0–A7 pass-through or grounded), reference source (AD780 3.0 V or external), supply sourcing (on-board vs. external), and serial interface signal origin (EVAL-SDP-CB1Z vs. external SMB/headers).

Key Specifications

Availability

EVAL-AD7328SDZ is available at Aetrix Electronics and suitable for industrial data acquisition, precision test equipment, and embedded sensor interface development requiring stable component supply, traceable sourcing, and long-term evaluation platform continuity.

Supply support for EVAL-AD7328SDZ 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 Wilmington, MA.

The EVAL-AD7328SDZ belongs to Analog Devices' evaluation board product line, engineered specifically to accelerate functional validation and system-level integration of their precision data converters like the AD7328.

FAQ

What is the primary function of the EVAL-AD7328SDZ?

The EVAL-AD7328SDZ is a dedicated evaluation platform for the AD7328 8-channel, 12-bit-plus-sign SAR ADC. It provides complete hardware infrastructure-including on-board power generation, analog input buffering with AD8597 op amps, reference selection, and SPI-level shifting-to enable comprehensive characterization of the AD7328's performance across all supported input ranges, sampling rates up to 1 MSPS, and configuration modes without requiring external support circuitry.

Which controller board is required to operate the EVAL-AD7328SDZ?

The EVAL-AD7328SDZ requires the EVAL-SDP-CB1Z system demonstration platform as its mandatory controller interface. The EVAL-SDP-CB1Z connects to a host PC via USB and communicates with the EVAL-AD7328SDZ through the J2 SDP connector, providing clock, control signals (CS/SCLK/DIN/DOUT), and power. No standalone operation is possible without EVAL-SDP-CB1Z or an equivalent SDP-compatible controller.

Does the EVAL-AD7328SDZ support both AD7327 and AD7328 devices?

Yes, the EVAL-AD7328SDZ board is mechanically and electrically identical to the EVAL-AD7327SDZ and supports both the AD7327 and AD7328 ICs. The board's firmware and software automatically detect and configure for either device. However, maximum sampling rate is limited to 500 kSPS when the AD7327 is installed, and 1 MSPS when the AD7328 is installed - matching each device's native serial interface capability.

How are power supplies configured on the EVAL-AD7328SDZ?

Power is supplied to the EVAL-AD7328SDZ via a 7–9 V dc input at J702 or J8. From this, the board generates ±15 V (for analog front-end), +5 V (VCC), +3.3 V (VDRIVE), and +12 V (VDD) using ADP1613, ADP3303-5, ADP190, and ADP2301 regulators. Link options LK101–LK106 determine whether these supplies are sourced internally or externally, and LK103/LK106 configure ±15 V output by populating specific 0 Ω resistors.

Can the EVAL-AD7328SDZ be used without a PC connection?

No - the EVAL-AD7328SDZ has no onboard microcontroller or autonomous operation mode. All configuration, sampling control, and data capture require the AD7327/AD7328 evaluation software running on a Windows PC and communicating through the EVAL-SDP-CB1Z. The board lacks local storage, display, or manual controls; it functions solely as a hardware interface between the AD7328 and the PC-hosted software environment.