AD7685BCPZRL Equivalent & Substitute Parts

Part Overview

The AD7685BCPZRL is a 16-bit Analog to Digital Converter (ADC) manufactured by Analog Devices Inc., part of the PulSAR® series. This device features a single pseudo-differential input with a 250 kSPS sampling rate and operates across a supply voltage range of 2.3V to 5.5V for both analog and digital domains. The part is packaged in a 10-LFCSP-WD (3x3) surface mount configuration.

The AD7685BCPZRL has reached obsolete product status. Equivalent active alternatives are available within the AD7685 base product family, offering identical electrical and mechanical specifications with current manufacturing support and improved availability.

Substiute Parts

AD7685BCPZRL

Analog Devices Inc.In Stock: 943AD7685BCPZRL Datasheet

Current PartRFQ

AD7685BCPZRL7

Analog Devices Inc.In Stock: 3277AD7685BCPZRL7 Datasheet

DirectRFQ

AD7685ACPZRL7

Analog Devices Inc.In Stock: 7813AD7685ACPZRL7 Datasheet

Parametric EquivalentRFQ

AD7685CCPZRL7

Analog Devices Inc.In Stock: 1891AD7685CCPZRL7 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution within the AD7685 family is determined by strict equivalence across all electrical and mechanical parameters. The following criteria establish direct substitutability:

• Resolution: 16 Bit (identical across all variants)
• Sampling Rate: 250 kSPS (identical across all variants)
• Input Configuration: 1 Pseudo-Differential Input (identical across all variants)
• Architecture: SAR (identical across all variants)
• Data Interface: SPI, DSP (identical across all variants)
• Reference Type: External (identical across all variants)
• Supply Voltage Range: 2.3V ~ 5.5V (identical across all variants)
• Operating Temperature Range: -40°C ~ 85°C (identical across all variants)
• Package: 10-LFCSP-WD (3x3) (identical across all variants)
• Mounting Type: Surface Mount (identical across all variants)

The AD7685 family variants (A, B, C grades) differ only in temperature performance grades and product status. All three variants share identical functional specifications and package configurations, making them electrically and mechanically interchangeable.

Parameter Comparison

Engineering Selection Recommendations

All three substitute parts (AD7685BCPZRL7, AD7685ACPZRL7, AD7685CCPZRL7) are direct functional equivalents to the obsolete AD7685BCPZRL. Selection among active alternatives should be based on the following factors:

Product Status: All substitute parts carry Active product status, ensuring continued manufacturing support and availability. The original AD7685BCPZRL is Obsolete and should not be selected for new designs.

Compliance Certifications: All substitute parts are ROHS3 Compliant and REACH Unaffected, meeting current environmental and regulatory requirements. These certifications are not specified for the obsolete original part.

Packaging and Availability: All variants are supplied in Cut Tape (CT) and Digi-Reel® packaging formats, supporting both manual and automated assembly workflows. Inventory levels vary across the three active alternatives, with AD7685ACPZRL7 offering the highest current stock (7764 pcs).

Electrical and Mechanical Compatibility: All substitute parts maintain identical electrical specifications and physical package dimensions, ensuring direct pin-for-pin and functional compatibility with existing designs.

Frequently Asked Questions (FAQ)

Q: Can AD7685BCPZRL7, AD7685ACPZRL7, and AD7685CCPZRL7 be used interchangeably with AD7685BCPZRL?

A: Yes. All three active variants are electrically and mechanically equivalent to the obsolete AD7685BCPZRL. They share identical resolution (16-bit), sampling rate (250 kSPS), input configuration (1 pseudo-differential), architecture (SAR), data interfaces (SPI, DSP), supply voltage ranges (2.3V to 5.5V), operating temperature range (-40°C to 85°C), and package specifications (10-LFCSP-WD 3x3). Direct substitution is supported without circuit modifications.

Q: What is the difference between the A, B, and C grade variants?

A: The provided data specifies identical electrical and mechanical parameters across all three grades. Differences, if any, are not documented in the supplied parameters and should not be assumed.

Q: Why should I avoid using the obsolete AD7685BCPZRL?

A: Obsolete parts face discontinuation risk, declining availability, and potential supply chain disruptions. Active alternatives ensure long-term design support, continued manufacturing, and reliable sourcing for both current production and future requirements.

Q: Are the substitute parts RoHS and REACH compliant?

A: Yes. All three active substitute parts (AD7685BCPZRL7, AD7685ACPZRL7, AD7685CCPZRL7) are ROHS3 Compliant and REACH Unaffected, meeting current environmental and regulatory standards.

Q: What packaging formats are available for the substitute parts?

A: All substitute parts are supplied in Cut Tape (CT) and Digi-Reel® packaging, supporting both manual and automated assembly processes.

Q: Does the package type differ between the original and substitute parts?

A: No. All parts use the identical 10-LFCSP-WD (3x3) surface mount package with exposed pad configuration. No PCB layout or assembly process modifications are required.