MICRF219AYQS Equivalent & Substitute Parts

Part Overview

The MICRF219AYQS is an RF receiver IC manufactured by Microchip Technology, designed for ASK and OOK modulation schemes in the 300MHz to 450MHz frequency band. This surface-mount component operates at 3V to 3.6V supply voltage with a sensitivity of -110dBm and supports data rates up to 10kbps. The device is actively produced and RoHS3 compliant, making it suitable for industrial and commercial RF receiver applications requiring low-power reception in the UHF band.

Equivalent and substitute parts are identified when design requirements allow flexibility in sensitivity, data rate, or current consumption while maintaining core functional compatibility within the same frequency band, modulation protocol, and physical package.

Substiute Parts

MICRF219AYQS

Microchip TechnologyIn Stock: 1630MICRF219AYQS Datasheet

Current PartRFQ

MICRF219AAYQS

Microchip TechnologyIn Stock: 2603MICRF219AAYQS Datasheet

MFR RecommendedRFQ

MICRF220AYQS

Microchip TechnologyIn Stock: 22314MICRF220AYQS Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the MICRF219AYQS are qualified based on the following criteria:

Core Compatibility Requirements (Non-Negotiable):

• Frequency range: 300MHz ~ 450MHz
• Modulation protocol: ASK, OOK
• Supply voltage: 3V ~ 3.6V
• Package / Case: 16-SSOP (0.154", 3.90mm Width)
• Mounting type: Surface Mount
• Operating temperature: -40°C ~ 105°C

Allowable Parameter Variations:

• Sensitivity: May be equal to or better (lower dBm value)
• Data rate: May be equal to or higher
• Current consumption: May be equal to or lower
• Product status: Must be Active

The MICRF219AYQS has two qualified substitutes: MICRF219AAYQS and MICRF220AYQS. Both maintain identical frequency, modulation, voltage, package, and temperature specifications. Variations in sensitivity, data rate, and current consumption are within acceptable substitution parameters for RF receiver applications.

Parameter Comparison

Engineering Selection Recommendations

All three parts—MICRF219AYQS, MICRF219AAYQS, and MICRF220AYQS—maintain Active product status and full RoHS3 compliance. Selection between these devices depends on application-specific requirements within the allowable parameter ranges.

MICRF219AYQS is the baseline specification with 10kbps maximum data rate and 6mA receiving current.

MICRF219AAYQS offers improved sensitivity (-112.5dBm versus -110dBm) and reduced receiving current (4.3mA versus 6mA), making it suitable for power-constrained applications requiring enhanced reception capability. Data rate specification is not provided for this variant.

MICRF220AYQS provides doubled data rate capability (20kbps versus 10kbps) with improved sensitivity (-112.5dBm) while maintaining the same receiving current (6mA) as the baseline part. This variant is designated as part of the QwikRadio® product series.

All parts are manufactured by Microchip Technology and share identical package, voltage, frequency, modulation, and temperature specifications, ensuring direct PCB compatibility and interchangeability within the design constraints of the application.

Frequently Asked Questions (FAQ)

Q: Can MICRF219AAYQS be used as a direct replacement for MICRF219AYQS?

A: Yes. Both parts share identical frequency range (300MHz ~ 450MHz), modulation protocol (ASK, OOK), supply voltage (3V ~ 3.6V), package (16-SSOP), and operating temperature range (-40°C ~ 105°C). The MICRF219AAYQS offers superior sensitivity (-112.5dBm) and lower receiving current (4.3mA), making it functionally compatible and performance-equivalent or superior for the same application.

Q: What is the primary difference between MICRF220AYQS and MICRF219AYQS?

A: The MICRF220AYQS supports a maximum data rate of 20kbps compared to 10kbps for the MICRF219AYQS, while maintaining improved sensitivity (-112.5dBm versus -110dBm). Both devices consume 6mA during reception. The MICRF220AYQS is suitable for applications requiring higher data throughput within the same frequency and modulation framework.

Q: Are all three parts pin-compatible?

A: Yes. All three parts use the 16-SSOP (0.154", 3.90mm Width) package with surface-mount configuration, ensuring identical PCB footprint and pin assignment compatibility.

Q: Do all substitute parts meet the same compliance standards?

A: Yes. MICRF219AYQS, MICRF219AAYQS, and MICRF220AYQS are all RoHS3 compliant, REACH unaffected, and classified under ECCN EAR99, with identical HTSUS code 8542.39.0001.

Q: Which part should be selected for lowest power consumption?

A: MICRF219AAYQS offers the lowest receiving current at 4.3mA, compared to 6mA for both MICRF219AYQS and MICRF220AYQS. This makes it the optimal choice for battery-powered or energy-constrained applications.

Q: Can MICRF220AYQS handle higher data rates than the original part?

A: Yes. MICRF220AYQS supports a maximum data rate of 20kbps, double that of the MICRF219AYQS (10kbps). Applications requiring higher data throughput can use this variant while maintaining all other electrical and mechanical specifications.