Analog Devices Inc. EVAL-AD7612CBZ

Overview

EVAL-AD7612CBZ from Analog Devices is an evaluation board designed for the AD7612 16-bit, 750 kSPS PulSAR® successive approximation register (SAR) analog-to-digital converter. It supports configurable unipolar and bipolar input ranges (0–5 V, 0–10 V, ±5 V, ±10 V), features on-board high-precision reference (AD780/ADR431/ADR435), buffered parallel (16-bit) and serial interfaces, and integrates signal conditioning circuitry with dual op-amps for flexible analog front-end prototyping in precision data acquisition systems.

For engineers reviewing the EVAL-AD7612CBZ datasheet, EVAL-AD7612CBZ pinout, EVAL-AD7612CBZ application, or EVAL-AD7612CBZ equivalent, this board enables rapid validation of ADC performance metrics-including SNR, SINAD, THD, SFDR, and transition noise-via PC-based software with histogram, FFT, and decimated AC analysis modes, while supporting both stand-alone operation and integration with EVAL-CED1Z or EVAL-CONTRL BRDxZ capture boards.

Technical Context

The EVAL-AD7612CBZ implements a 4-layer PCB layout with isolated analog and digital ground planes connected directly under the ADC to preserve high-resolution performance. It uses a gate array (U10) to generate conversion control signals-including CNVST-and buffer ADC output data, supporting both parallel (BD[0:15] via 40-pin IDC P2) and serial (SDOUT/SCLK/SYNC) readout modes.

Configuration is managed through dual DIP switches (S16 and S35) and jumpers (JP1–JP22), enabling selection of input range polarity, data coding (straight binary or 2's complement), interface mode (parallel vs. serial), clock source (internal gate array or external SMB), and power supply routing for AVDD, DVDD, OVDD, and reference buffers-all without hardware modification.

Key Specifications

Availability

EVAL-AD7612CBZ is available at Aetrix Electronics and suitable for precision data acquisition, industrial instrumentation, and high-fidelity test equipment requiring stable component supply, full-spectrum dynamic characterization (SNR/SINAD/THD/SFDR), and rapid ADC interface prototyping.

Supply support for EVAL-AD7612CBZ 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 (DSP) technologies, headquartered in Norwood, MA, with design centers and manufacturing facilities worldwide.

The EVAL-AD7612CBZ belongs to Analog Devices' PulSAR® evaluation platform family, engineered specifically to accelerate development for high-speed, high-accuracy SAR ADCs used in precision measurement, automated test equipment, and scientific instrumentation.

FAQ

What is the primary function of the EVAL-AD7612CBZ?

The EVAL-AD7612CBZ is an evaluation board purpose-built to characterize and prototype the AD7612 16-bit, 750 kSPS SAR ADC. It provides complete signal chain support-including configurable analog input conditioning, precision reference, buffered parallel/serial interfaces, and PC-based analysis software-to validate DC accuracy, AC performance (SNR, SINAD, THD, SFDR), and timing behavior without custom hardware. The EVAL-AD7612CBZ enables both stand-alone testing and integration with Analog Devices' EVAL-CED1Z or EVAL-CONTRL BRDxZ capture boards.

Does the EVAL-AD7612CBZ support bipolar input ranges for the AD7612?

Yes, the EVAL-AD7612CBZ fully supports bipolar input ranges (±5 V, ±10 V) for the AD7612 via software configuration or DIP switch S16 settings-no hardware modification required. The board's iCMOS-compatible architecture allows input range selection through the Serial Programmable Port (SPP), and its analog front-end op-amps (U6/U7) are preconfigured for mid-scale common-mode biasing to enable seamless bipolar operation. This capability is explicitly confirmed in Table 1 and the "Serial Programmable Port" section of the preliminary technical data.

Which capture boards are compatible with the EVAL-AD7612CBZ?

The EVAL-AD7612CBZ is compatible with Analog Devices' EVAL-CED1Z (Converter and Evaluation Development board) and EVAL-CONTRL BRDxZ (Evaluation Control Board) series, interfacing via a 96-pin DIN connector (P3). Both capture boards provide master clock (MCLK), control signals, and data transfer paths-supporting word/byte read modes and synchronized sampling. Stand-alone operation is also supported without either capture board, using the onboard gate array (U10) to generate CNVST and manage data buffering.

What software tools are provided for the EVAL-AD7612CBZ?

Analog Devices supplies two dedicated Windows-based software packages for the EVAL-AD7612CBZ: the AD76xx Evaluation Software CED (for EVAL-CED1Z) and AD76xx Evaluation Software ECB (for EVAL-CONTRL BRDxZ). Both support histogram (DC noise), FFT (AC performance), and decimated AC analysis, with real-time display of SNR, SINAD, THD, SFDR, and time-domain waveforms. The software installs USB or parallel-port drivers and includes configuration screens for SPP settings, input range selection, and data capture parameters specific to the AD7612.

Can the EVAL-AD7612CBZ be used without external power supplies or host computers?

No-the EVAL-AD7612CBZ requires external power (±12 V and +5 V analog; +5 V/3.3 V/2.5 V digital via SJ1/SJ2) and a host PC for full functionality. While stand-alone operation eliminates dependency on EVAL-CED1Z/EVAL-CONTRL BRDxZ, the gate array still needs power, and PC software is mandatory for data capture, analysis, and SPP configuration. However, basic DC histogram tests can run without an external analog source, using the on-board buffered VREF/2 (for unipolar) or 0 V (for bipolar) inputs at J1/J2.