AD7472BRZ Equivalent & Substitute Parts

Part Overview

The AD7472BRZ is a 12-bit Analog to Digital Converter (ADC) manufactured by Analog Devices Inc., designed for single-ended input data acquisition applications. It features a Successive Approximation Register (SAR) architecture with a 1.5 MHz sampling rate and operates from a 2.7V to 5.25V supply voltage. The device is packaged in a 24-SOIC surface mount package with parallel data interface output.

The AD7472BRZ is currently classified as obsolete. Identifying equivalent and substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production or maintenance requirements for systems utilizing this component.

Substiute Parts

AD7472BRZ

Analog Devices Inc.In Stock: 2022AD7472BRZ Datasheet

Current PartRFQ

AD7091BCPZ-RL7

Analog Devices Inc.In Stock: 11460AD7091BCPZ-RL7 Datasheet

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AD7091R-8BRUZ

Analog Devices Inc.In Stock: 2448AD7091R-8BRUZ Datasheet

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AD7472ARZ

Analog Devices Inc.In Stock: 1886AD7472ARZ Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the AD7472BRZ is determined by the following critical parameters:

• Resolution: 12-bit ADC capability
• Architecture: SAR-based conversion
• Input Configuration: Single-ended input
• Supply Voltage Range: Compatibility with 2.7V to 5.25V operation
• Operating Temperature Range: Support for -40°C to 85°C minimum
• Package Compatibility: Physical and electrical compatibility with 24-pin surface mount packages

The substitute parts identified maintain the core 12-bit SAR ADC functionality with single-ended input capability. However, variations exist in sampling rate, data interface type, number of inputs, reference configuration, and package form factor. These variations determine the degree of direct substitution feasibility.

Parameter Comparison

Engineering Selection Recommendations

AD7472ARZ is the closest functional equivalent to the AD7472BRZ. Both devices share identical resolution, input configuration, sampling rate, data interface type, supply voltage range, and operating temperature specifications. The primary distinction is product status: AD7472ARZ is active and currently available, whereas AD7472BRZ is obsolete. Both are packaged in 24-SOIC form factor with identical pinout compatibility. This part is suitable for direct replacement in existing designs without circuit modification.

AD7091R-8BRUZ provides 12-bit SAR ADC functionality with expanded input capability (8 inputs versus 1 input). It operates at a reduced sampling rate (1M versus 1.5M) and uses SPI/DSP serial interface instead of parallel output. The device supports an extended operating temperature range (-40°C to 125°C) and lower minimum supply voltage (2.09V). The 24-TSSOP package differs from the original 24-SOIC, requiring PCB layout modification. This part is suitable for applications where multiple analog inputs are required and serial interface communication is acceptable.

AD7091BCPZ-RL7 is a compact 8-pin CSP package variant with 12-bit SAR ADC functionality. It operates at 1M sampling rate with SPI/DSP serial interface and supply-referenced voltage configuration. The significantly reduced package size (8-LFCSP-UD 2x2) requires substantial PCB redesign. This part is suitable only for space-constrained applications where single-input, serial interface operation is compatible with system requirements.

All substitute parts are manufactured by Analog Devices Inc. and carry active product status with current availability. Selection should be based on interface compatibility (parallel versus serial), input channel requirements, package form factor constraints, and thermal operating range specifications.

Frequently Asked Questions (FAQ)

Q: Can AD7472ARZ be used as a direct replacement for AD7472BRZ?

A: Yes. AD7472ARZ is functionally equivalent with identical resolution (12-bit), sampling rate (1.5M), input configuration (single-ended), data interface (parallel), supply voltage range (2.7V to 5.25V), and operating temperature range (-40°C to 85°C). Both use 24-SOIC packaging. The primary difference is product status: AD7472ARZ is active and available, while AD7472BRZ is obsolete.

Q: What are the key differences between parallel and serial interface variants?

A: AD7472BRZ and AD7472ARZ use parallel data output, requiring multiple I/O pins for data transmission. AD7091R-8BRUZ and AD7091BCPZ-RL7 use SPI/DSP serial interfaces, reducing pin count but requiring serial communication protocol implementation. Serial interface variants also support multiple input channels, whereas parallel variants are limited to single-input configurations.

Q: Is the AD7091BCPZ-RL7 suitable for high-volume production?

A: AD7091BCPZ-RL7 is active and available in high quantities (11,400 pieces in stock). However, its 8-pin CSP package requires significant PCB redesign compared to the original 24-SOIC form factor. Production feasibility depends on design flexibility and space constraints.

Q: What is the impact of reduced sampling rate on system performance?

A: AD7091R-8BRUZ and AD7091BCPZ-RL7 operate at 1M sampling rate compared to 1.5M for the original AD7472BRZ. This 33% reduction in sampling rate may affect applications requiring high-speed signal acquisition. System compatibility depends on the Nyquist frequency requirements of the analog input signals.

Q: Are all substitute parts RoHS compliant?

A: AD7472ARZ, AD7091R-8BRUZ, and AD7091BCPZ-RL7 are all ROHS3 compliant. The original AD7472BRZ does not specify RoHS status in the provided data.

Q: What supply voltage range is supported across all variants?

A: AD7472BRZ and AD7472ARZ support 2.7V to 5.25V. AD7091R-8BRUZ and AD7091BCPZ-RL7 support a lower minimum of 2.09V to 5.25V, providing greater flexibility for low-voltage applications.