AD9578BCPZ Equivalent & Substitute Parts

Part Overview

The AD9578BCPZ is a PLL clock generator IC manufactured by Analog Devices Inc., designed for 919MHz frequency synthesis applications. This device features integrated phase-locked loop functionality with bypass capability, supporting multiple input and output signal formats including LVCMOS, LVDS, LVPECL, and Crystal inputs, with HCSL, LVCMOS, LVDS, and LVPECL outputs. The part is classified as Obsolete, making identification of compatible substitute components essential for ongoing system support and new design implementations.

Substiute Parts

AD9578BCPZ

Analog Devices Inc.In Stock: 949AD9578BCPZ Datasheet

Current PartRFQ

AD9576BCPZ

Analog Devices Inc.In Stock: 60413AD9576BCPZ Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the AD9578BCPZ is determined by compatibility across the following critical parameters:

• Manufacturer Ecosystem: Both main and substitute parts are Analog Devices Inc. clock/timing ICs, ensuring design continuity and firmware compatibility
• Functional Classification: Both are PLL-based clock generators with frequency synthesis capability
• Supply Voltage Range: The substitute part operates within 2.38V ~ 3.63V, overlapping the main part's 2.375V ~ 3.63V range
• Signal Format Support: Both support differential input/output configurations (Yes/Yes) with multiple signal standard options
• Compliance Standards: Both are ROHS3 compliant with identical MSL ratings (3, 168 Hours) and REACH unaffected status
• Mounting Technology: Both use Surface Mount technology with CSP packaging

The AD9576BCPZ qualifies as a substitute based on these aligned parameters, despite differences in maximum frequency (1.25GHz vs 919MHz), package pin count (64 vs 48), and input/output ratio specifications.

Parameter Comparison

Engineering Selection Recommendations

The AD9576BCPZ is available as an Active product from Analog Devices Inc., providing long-term supply continuity compared to the Obsolete AD9578BCPZ. Both parts maintain identical compliance certifications (ROHS3, REACH unaffected) and equivalent moisture sensitivity ratings, ensuring regulatory and environmental compatibility.

The substitute part extends the operating temperature range to -40°C ~ 85°C, providing broader thermal performance capability. Supply voltage specifications are functionally equivalent across both parts. The AD9576BCPZ supports higher maximum frequency operation (1.25GHz) and includes additional output format options (CMOS, HSTL), offering enhanced flexibility for frequency synthesis applications.

Physical substitution requires accommodation of the larger 64-pin package (9x9mm) compared to the 48-pin package (7x7mm) of the original part. PCB layout modifications and pin mapping verification are necessary prior to implementation.

Frequently Asked Questions (FAQ)

Q: Can the AD9576BCPZ directly replace the AD9578BCPZ without design modifications?

A: Functional substitution is possible based on aligned PLL architecture, supply voltage ranges, and signal format support. However, the increased pin count (64 vs 48) and larger package footprint (9x9mm vs 7x7mm) require PCB layout redesign and pin assignment verification.

Q: What are the key compatibility criteria for this substitution?

A: Compatibility is established through: identical manufacturer (Analog Devices Inc.), matching PLL and frequency synthesis functionality, overlapping supply voltage specifications (2.38V ~ 3.63V), equivalent differential input/output capability, and identical compliance certifications (ROHS3, MSL 3).

Q: Does the AD9576BCPZ support the same input and output signal formats?

A: Both parts support differential configurations. The AD9576BCPZ expands output format options to include CMOS and HSTL in addition to HCSL, LVDS, and LVPECL. Input format compatibility includes Clock and Crystal options for the substitute part.

Q: What is the impact of the higher maximum frequency rating on system design?

A: The AD9576BCPZ maximum frequency of 1.25GHz exceeds the AD9578BCPZ specification of 919MHz. This provides operational headroom for frequency synthesis applications but does not mandate design changes if system requirements remain within the original 919MHz specification.

Q: Are there thermal or environmental differences between these parts?

A: The AD9576BCPZ extends the lower operating temperature limit to -40°C compared to -25°C for the AD9578BCPZ. Both maintain identical MSL ratings (3, 168 Hours) and REACH compliance status, ensuring equivalent environmental handling requirements.

Q: What packaging considerations apply to this substitution?

A: The AD9576BCPZ uses a 64-pin 9x9mm CSP package versus the 48-pin 7x7mm package of the original part. PCB footprint expansion, via placement, and thermal management modifications may be required depending on board layout constraints.