Analog Devices Inc. EVAL-AD7699EDZ

Overview

EVAL-AD7699EDZ from Analog Devices is an evaluation board designed specifically for the AD7699 - a 16-bit, 500 kSPS PulSAR® successive approximation register (SAR) analog-to-digital converter with 8-channel multiplexed inputs, on-board ADR435 reference, FPGA-based serial-to-parallel interface logic, and configurable analog signal conditioning circuitry. It enables high-fidelity DC and AC performance validation of the AD7699 in lab and development environments.

For engineers reviewing the EVAL-AD7699EDZ datasheet, EVAL-AD7699EDZ pinout, EVAL-AD7699EDZ application, or EVAL-AD7699EDZ equivalent, this page provides verified hardware configuration details, supported ADC interfaces (SPI-compatible 3-wire + CNV), reference source options (on-chip, ADR435, or external), stand-alone vs. EVAL-CED1Z-coupled operation modes, and real-world test setup guidance for histogram, FFT, and time-domain analysis.

Technical Context

The EVAL-AD7699EDZ implements a dedicated FPGA (U6) to manage conversion timing, buffer serial ADC output into 16-bit parallel transfers, and support both stand-alone operation (via P3 IDC header or direct test points) and synchronized data capture via the EVAL-CED1Z USB interface. It supports all four PulSAR ADC variants listed in its family scope: AD7682, AD7689, AD7699, and AD7949.

Analog front-end flexibility includes eight independent signal conditioning paths (U13–U20), selectable ±5 V / +7 V amplifier supplies (VDRV−/VDRV+), jumper-configurable reference routing (ADR435, on-chip, or EXTREF), and COM/VCM selection for unipolar/bipolar input scaling. Power domains are strictly segregated: analog (+12VA, +5VA, −5VA), digital (VDIG, VIO), and reference (VCCREF) each have dedicated LDOs and ground planes.

Key Specifications

Availability

EVAL-AD7699EDZ is available at Aetrix Electronics and suitable for high-resolution data acquisition system development, precision sensor interface prototyping, and industrial instrumentation calibration requiring stable component supply and full-spectrum ADC characterization capability.

Supply support for EVAL-AD7699EDZ 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, serving industrial, communications, automotive, and healthcare markets.

The EVAL-AD7699EDZ belongs to Analog Devices' PulSAR® evaluation platform family, engineered to accelerate design-in of precision SAR ADCs by providing validated signal chain integrity, low-noise power delivery, and turnkey software for performance benchmarking.

FAQ

What ADC models does the EVAL-AD7699EDZ support?

The EVAL-AD7699EDZ is explicitly designed for the AD7699 but is also documented as compatible with the AD7682, AD7689, and AD7949 - all members of the same PulSAR® 14-/16-bit SAR ADC family sharing pinout, interface protocol, and reference architecture. Each requires appropriate jumper and software configuration per device-specific datasheet.

Does EVAL-AD7699EDZ require the EVAL-CED1Z to operate?

No - EVAL-AD7699EDZ supports both stand-alone and EVAL-CED1Z-coupled operation. In stand-alone mode, it uses on-board FPGA logic to buffer serial data and expose it via P3 IDC header or test points (SDO/SCK/DIN/CNV). The EVAL-CED1Z is required only for USB-connected PC-based data capture and software-controlled analysis.

How is the reference configured on EVAL-AD7699EDZ?

EVAL-AD7699EDZ offers three reference options: (1) on-chip band gap (2.5 V or 4.096 V, enabled via software), (2) on-board ADR435 (default 4.096 V, selected via P5 jumper), or (3) external reference applied to TP17. Jumper P7 selects REF (direct drive) or REFIN (buffered input), and P6 enables/disables the AD8032 buffer stage.

Can EVAL-AD7699EDZ perform bipolar input measurements?

Yes - EVAL-AD7699EDZ supports bipolar operation by configuring J3 as COM and setting P8 to VCM (VREF/2), establishing the common-mode voltage at mid-scale. Input amplifiers U13–U20 can be reconfigured for gain and offset; factory default is unity-gain buffering, but negative gain and DC bias injection are supported via solder-jumper and resistor changes.

What software tools are provided for EVAL-AD7699EDZ?

Analog Devices provides the PulSAR Evaluation Software (Windows XP), which runs on EVAL-AD7699EDZ when connected to EVAL-CED1Z. It enables histogram analysis (code transition noise), FFT computation (SNR, SINAD, THD, SFDR), decimation filtering, and oscilloscope-style time-domain visualization - all with configurable sample rate, input range, and channel selection.