PE4150MLI-Z Equivalent & Substitute Parts

Part Overview

The PE4150MLI-Z is a general-purpose RF mixer IC manufactured by pSemi, designed for up/down conversion applications across the 136MHz to 941MHz frequency range. This device is packaged in a 20-QFN (4x4) surface mount configuration with an exposed pad and operates from a 2.9V to 3.1V supply.

The PE4150MLI-Z is classified as obsolete. Identifying suitable substitute components is necessary to maintain design continuity, ensure supply chain reliability, and support ongoing production or redesign requirements for systems utilizing this mixer topology.

Substiute Parts

PE4150MLI-Z

pSemiIn Stock: 1532PE4150MLI-Z Datasheet

Current PartRFQ

MAX2031ETP+

Analog Devices Inc./Maxim IntegratedIn Stock: 2832MAX2031ETP+ Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the PE4150MLI-Z is determined by the following critical parameters:

• Functional topology: Single-channel up/down converter mixer IC
• Frequency coverage: Operating range must encompass or exceed the 136MHz to 941MHz band
• Package compatibility: Surface mount QFN package with exposed pad
• Supply voltage range: Must operate within or be compatible with the 2.9V to 3.1V supply specification
• Pin count and footprint: 20-pin QFN configuration

The MAX2031ETP+ qualifies as a substitute based on its identical functional topology (single up/down converter), compatible surface mount QFN packaging (20-pin), and active product status. While the MAX2031ETP+ operates at a higher frequency range (650MHz ~ 1GHz) and requires a different supply voltage (4.75V ~ 5.25V), these differences represent design trade-offs that may be acceptable depending on system requirements and circuit redesign capability.

Parameter Comparison

Engineering Selection Recommendations

The MAX2031ETP+ is an active product with ROHS3 compliance and improved moisture sensitivity characteristics (MSL 1 versus MSL 3), providing superior long-term supply chain availability and environmental compliance. However, substitution requires circuit-level evaluation due to differences in supply voltage requirements (4.75V ~ 5.25V versus 2.9V ~ 3.1V), increased supply current (100mA versus 8mA), and frequency range optimization (650MHz ~ 1GHz versus 136MHz ~ 941MHz).

Direct pin-for-pin replacement is not feasible without power supply redesign and potential PCB layout modifications due to package footprint differences (20-QFN 4x4 versus 20-TQFN 5x5).

Frequently Asked Questions (FAQ)

Q: Can the MAX2031ETP+ be used as a direct replacement for the PE4150MLI-Z?

A: No. While both devices are single-channel up/down converter mixers in 20-pin QFN packages, they differ in supply voltage (4.75V ~ 5.25V versus 2.9V ~ 3.1V), package footprint (5x5 versus 4x4), and frequency optimization. Circuit redesign is required.

Q: What are the key compatibility factors for mixer IC substitution?

A: Functional topology (up/down converter configuration), frequency range coverage, pin count, package type, and supply voltage requirements are the primary factors determining substitution feasibility.

Q: Why is the PE4150MLI-Z marked as obsolete?

A: Obsolete status indicates the manufacturer has discontinued production. Identifying active alternatives ensures continued access to equivalent functionality.

Q: Does the MAX2031ETP+ cover the full frequency range of the PE4150MLI-Z?

A: The MAX2031ETP+ operates from 650MHz to 1GHz, which does not cover the lower frequency range (136MHz ~ 650MHz) of the PE4150MLI-Z. Application frequency requirements must be evaluated before substitution.

Q: What packaging considerations apply to these devices?

A: Both devices use surface mount QFN packages with exposed pads. The PE4150MLI-Z uses a 4x4mm footprint while the MAX2031ETP+ uses a 5x5mm footprint, requiring PCB layout modifications for substitution.