Analog Devices Inc. EVAL-AD7450ASDZ

Overview

EVAL-AD7450ASDZ from Analog Devices is a full-featured evaluation board designed to characterize the AD7450A 12-bit, 1 MSPS SAR ADC under real-world analog input conditions. It supports differential/pseudo-differential operation, integrates on-board power generation (5 V, 3.3 V, ±12 V), and enables PC-based control via the EVAL-SDP-CB1Z system demonstration platform.

For engineers reviewing the EVAL-AD7450ASDZ datasheet, EVAL-AD7450ASDZ pinout, EVAL-AD7450ASDZ application, or EVAL-AD7450ASDZ equivalent, this page delivers verified hardware configuration details, link setup requirements for AD7450A-specific operation, software integration workflow, and standalone interface options - all critical for rapid ADC validation in precision data acquisition systems.

Technical Context

The EVAL-AD7450ASDZ implements a complete signal chain for the AD7450A, including AD8599 dual op amps for input buffering, ADR431 XFET reference for stable 2.5 V reference voltage, and ADG3308 level shifter to interface 3.3 V SDP logic with higher-voltage ADC domains. Power sequencing is managed by ADM1185 to ensure correct startup order of VDD, VSS, and VREF.

It supports three analog input configurations: single-ended-to-differential conversion (default for AD7450A), individual channel buffering (INPUT A/B), and bias-up circuitry (used for AD7451). Link settings LK1–LK701 are preconfigured per Table 3 to route VIN+ and VIN− from U5-A/U5-B outputs and enable bipolar input range (±VREF) via LK4 insertion.

Key Specifications

Availability

EVAL-AD7450ASDZ is available at Aetrix Electronics and suitable for precision data acquisition, industrial sensor interface, and test & measurement applications requiring stable component supply and validated ADC evaluation infrastructure.

Supply support for EVAL-AD7450ASDZ 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-AD7450ASDZ belongs to Analog Devices' precision ADC evaluation platform family, engineered to accelerate design-in of high-speed, low-power SAR converters in applications demanding accurate dynamic performance characterization.

FAQ

What is the primary function of the EVAL-AD7450ASDZ?

The EVAL-AD7450ASDZ is an evaluation board dedicated to the AD7450A 12-bit, 1 MSPS SAR ADC. It provides a complete, calibrated signal chain-including input buffering (AD8599), reference (ADR431), power regulation (ADP7104, ADP3303-5), and level shifting (ADG3308)-to enable accurate functional and dynamic performance testing. The EVAL-AD7450ASDZ supports both PC-controlled operation via EVAL-SDP-CB1Z and standalone use via test-point access.

Which ADC does the EVAL-AD7450ASDZ specifically support?

The EVAL-AD7450ASDZ is configured and validated for the AD7450A 12-bit, 1 MSPS SAR ADC. Its default link settings (Table 3 in the User Guide) - including LK1=A, LK4=inserted, LK5=C, LK6=A, and LK7=A - route signals and configure biasing specifically for AD7450A's differential input mode and bipolar ±2.5 V range. While it shares hardware with EVAL-AD7451SDZ, the EVAL-AD7450ASDZ is not preconfigured for AD7451 operation without rework.

How is the EVAL-AD7450ASDZ powered?

The EVAL-AD7450ASDZ is powered via a 7 V to 9 V DC input applied to connector J702 (included 9 V mains adapter). This single input feeds the ADP1613 boost converter and ADP7104/ADP3303-5/ADP1720 regulators to generate all required voltages: +15 V (for op amp supplies), +5 V (VDD digital), +3.3 V (SDP interface), and ±12 V (op amp rails). External bench power can alternatively be applied to J700, and amplifier supplies may be sourced externally via J100 if needed.

What software is required to operate the EVAL-AD7450ASDZ?

The EVAL-AD7450ASDZ requires the official Analog Devices AD7450A/AD7451 evaluation software, distributed on CD with the kit and installable on Windows PCs. This software enables waveform capture, histogram analysis, FFT computation (reporting SNR, SINAD, THD, SFDR), and summary reporting. It communicates exclusively through the EVAL-SDP-CB1Z controller board, which must be installed with its drivers prior to connecting the EVAL-AD7450ASDZ to the PC.

Can the EVAL-AD7450ASDZ be used without the EVAL-SDP-CB1Z?

Yes, the EVAL-AD7450ASDZ supports standalone operation. To do so, R31, R35, and R36 must be removed to isolate the AD7450A/AD7451 from the SDP interface circuitry, and digital signals (CS, SCLK, SDATA, BUSY) must be accessed via designated test points. However, no standalone firmware or onboard processing exists - external logic or microcontroller is required to drive the ADC's serial interface and acquire data directly.