AD7822BR Equivalent & Substitute Parts

Part Overview

The AD7822BR is an 8-bit pipelined analog-to-digital converter manufactured by Analog Devices Inc., designed for single-ended input data acquisition applications. This device features a 2M samples-per-second sampling rate with parallel data interface and integrated sample-and-hold functionality. The AD7822BR is classified as obsolete, making identification of compatible substitute parts essential for ongoing system support and component procurement.

Substiute Parts

AD7822BR

Analog Devices Inc.In Stock: 2509AD7822BR Datasheet

Current PartRFQ

AD7822BRZ

Analog Devices Inc.In Stock: 1434AD7822BRZ Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the AD7822BR are identified based on strict electrical and mechanical parameter equivalence. The following parameters define substitution eligibility:

• Resolution: 8 bits
• Sampling Rate: 2M samples/second
• Input Configuration: 1 single-ended input
• Data Interface: Parallel
• Architecture: Pipelined with integrated sample-and-hold
• S/H:ADC Ratio: 1:1
• Supply Voltage Ranges: 2.7V ~ 3.3V and 5V (both analog and digital)
• Operating Temperature: -40°C ~ 85°C
• Package: 20-SOIC form factor
• Mounting: Surface Mount

All substitute parts must maintain identical electrical performance characteristics and physical package compatibility to ensure direct replacement capability without circuit redesign.

Parameter Comparison

Engineering Selection Recommendations

The AD7822BRZ is the direct substitute for the AD7822BR. Both devices are manufactured by Analog Devices Inc. and share identical electrical specifications and physical packaging. The primary distinction is product status: the AD7822BR is obsolete while the AD7822BRZ maintains active production status.

The AD7822BRZ provides additional compliance certifications including ROHS3 compliance and REACH unaffected status, making it suitable for applications requiring regulatory compliance documentation. For new designs or system refreshes, the AD7822BRZ is the appropriate selection. For legacy system maintenance where the original AD7822BR is specified, the AD7822BRZ provides full electrical and mechanical compatibility without requiring circuit modifications.

Frequently Asked Questions (FAQ)

Q: Can the AD7822BRZ directly replace the AD7822BR in existing designs?

A: Yes. The AD7822BRZ is electrically and mechanically identical to the AD7822BR. Both devices feature 8-bit resolution, 2M samples/second sampling rate, single-ended input, parallel data interface, and identical supply voltage requirements. The 20-SOIC package dimensions and pinout are identical, enabling direct board-level substitution.

Q: What is the primary reason to transition from AD7822BR to AD7822BRZ?

A: The AD7822BR is classified as obsolete, while the AD7822BRZ maintains active production status. This ensures long-term component availability and supply chain continuity. Additionally, the AD7822BRZ carries ROHS3 and REACH compliance certifications.

Q: Are there any performance differences between these devices?

A: No. Both devices deliver identical performance across all specified parameters including resolution, sampling rate, input configuration, supply voltage ranges, and operating temperature range.

Q: What packaging options are available for these parts?

A: Both the AD7822BR and AD7822BRZ are supplied in 20-SOIC surface-mount packages. The AD7822BRZ is available in tube packaging, while the AD7822BR packaging specification is not detailed in the provided data.

Q: Are these devices suitable for dual-supply applications?

A: Yes. Both devices support analog and digital supply voltages of 2.7V ~ 3.3V or 5V, enabling operation in single-supply or dual-supply configurations depending on application requirements.