MICRF022YM-FS12 Equivalent & Substitute Parts

Part Overview

The MICRF022YM-FS12 is an RF receiver integrated circuit manufactured by Microchip Technology, designed for ASK/OOK modulation in the 300–440 MHz frequency band. This component operates at –97 dBm sensitivity with a maximum data rate of 10 kbps and is housed in an 8-SOIC surface mount package. The part is classified as obsolete, necessitating identification of functionally equivalent alternatives for ongoing design support and production continuity. Substitute parts must maintain compatibility with the receiver architecture, frequency band, modulation scheme, and supply voltage specifications of the original design.

Key Parameters

Parameter	MICRF022YM-FS12
Manufacturer	Microchip Technology
Part Status	Obsolete
Frequency Range	300 MHz – 440 MHz
Modulation	ASK, OOK
Sensitivity	–97 dBm
Data Rate (Max)	10 kbps
Supply Voltage	4.75 V – 5.5 V
Receiving Current	2.2 mA
Operating Temperature	–40°C – 85°C
Package	8-SOIC
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution of the MICRF022YM-FS12 is determined by the following critical parameters:

Frequency Compatibility: The main part operates in the 300–440 MHz band. Substitute parts must support this frequency range or a subset thereof that includes the intended operating frequency.

Modulation Support: ASK and OOK modulation schemes must be supported by the substitute part.

Receiver Architecture: The substitute must function as an RF receiver with comparable sensitivity and data rate capability for the intended application.

Supply Voltage: The substitute must operate within or overlap the 4.75–5.5 V supply range, or operate at a lower voltage range if the design can be adapted.

Package and Mounting: Surface mount packages are required for PCB integration compatibility.

Compliance: RoHS3 compliance and REACH unaffected status are mandatory for regulatory alignment.

The substitute parts listed below meet these criteria within the constraints of available Microchip Technology RF receiver and transceiver offerings.

Parameter Comparison

Parameter	MICRF022YM-FS12	MICRF219AAYQS	MICRF220AYQS	MICRF230YQS	ATA8510-GHQW	ATA8515-GHQW
Manufacturer	Microchip Technology	Microchip Technology	Microchip Technology	Microchip Technology	Microchip Technology	Microchip Technology
Part Status	Obsolete	Active	Active	Active	Active	Active
Frequency Range	300–440 MHz	300–450 MHz	300–450 MHz	433.92 MHz	315, 433, 868, 915 MHz	315, 433, 868, 915 MHz
Modulation	ASK, OOK	ASK, OOK	ASK, OOK	ISM	ASK, FSK	ASK, FSK
Sensitivity	–97 dBm	–112.5 dBm	–112.5 dBm	–112 dBm	–125 dBm	–125 dBm
Data Rate (Max)	10 kbps	—	20 kbps	20 kbps	—	—
Supply Voltage	4.75–5.5 V	3–3.6 V	3–3.6 V	3.5–5.5 V	1.9–3.6 V	1.9–3.6 V
Receiving Current	2.2 mA	4.3 mA	6 mA	6 mA	10.5 mA	10.5 mA
Operating Temperature	–40°C – 85°C	–40°C – 105°C	–40°C – 105°C	–40°C – 105°C	–40°C – 85°C	–40°C – 85°C
Package	8-SOIC	16-QSOP	16-QSOP	16-QSOP	32-VFQFN	32-VFQFN
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
REACH Status	REACH Unaffected	REACH Unaffected	REACH Unaffected	REACH Unaffected	REACH Unaffected	REACH Unaffected

Engineering Selection Recommendations

MICRF219AAYQS and MICRF220AYQS: These RF receiver parts are direct functional equivalents for ASK/OOK applications in the 300–450 MHz band. Both are active products with ROHS3 compliance and REACH unaffected status. MICRF220AYQS offers superior sensitivity (–112.5 dBm) and higher data rate capability (20 kbps) compared to the original part. Both require supply voltage adjustment from 4.75–5.5 V to 3–3.6 V. Package change from 8-SOIC to 16-QSOP requires PCB layout modification. MICRF219AAYQS includes RSSI (Received Signal Strength Indicator) functionality.

MICRF230YQS: This RF receiver operates at a fixed frequency of 433.92 MHz with ISM modulation support. It provides superior sensitivity (–112 dBm) and 20 kbps data rate. Supply voltage range of 3.5–5.5 V provides partial overlap with the original specification. The 16-QSOP package requires PCB layout modification. This part is suitable for applications operating exclusively at 433.92 MHz.

ATA8510-GHQW and ATA8515-GHQW: These are integrated RF transceiver plus microcontroller units supporting ASK and FSK modulation across 315, 433, 868, and 915 MHz bands. Both offer superior sensitivity (–125 dBm) and include embedded microcontroller functionality with SPI serial interface and GPIO pins. Supply voltage range of 1.9–3.6 V requires design adaptation. The 32-VFQFN package represents a significant footprint change from 8-SOIC. These parts are suitable for applications requiring integrated transceiver and processing capability. ATA8515-GHQW has MSL rating of 3 (168 hours) versus MSL 1 for ATA8510-GHQW.

All substitute parts maintain ROHS3 compliance and REACH unaffected status, ensuring regulatory continuity.

Frequently Asked Questions (FAQ)

Q: Can MICRF219AAYQS or MICRF220AYQS directly replace MICRF022YM-FS12 without PCB modification?

A: No. While both parts function as ASK/OOK RF receivers in the 300–450 MHz band, the package changes from 8-SOIC to 16-QSOP require PCB layout modification. Additionally, supply voltage must be adjusted from 4.75–5.5 V to 3–3.6 V.

Q: What is the primary difference between MICRF219AAYQS and MICRF220AYQS?

A: MICRF220AYQS supports a maximum data rate of 20 kbps, while MICRF219AAYQS does not specify a maximum data rate. MICRF220AYQS also draws 6 mA receiving current compared to 4.3 mA for MICRF219AAYQS. Both provide identical sensitivity (–112.5 dBm) and frequency range (300–450 MHz).

Q: Is MICRF230YQS suitable for applications requiring frequency agility across the 300–440 MHz band?

A: No. MICRF230YQS operates at a fixed frequency of 433.92 MHz only. It is suitable for applications operating exclusively at this frequency within the ISM band.

Q: What are the key differences between RF receiver parts (MICRF219AAYQS, MICRF220AYQS, MICRF230YQS) and transceiver parts (ATA8510-GHQW, ATA8515-GHQW)?

A: RF receiver parts function as receive-only components. Transceiver parts (ATA8510-GHQW, ATA8515-GHQW) integrate both transmit and receive functionality with embedded microcontroller units, SPI interfaces, and GPIO pins. Transceiver parts are suitable for applications requiring bidirectional communication and on-board processing.

Q: Can ATA8510-GHQW or ATA8515-GHQW operate at 440 MHz?

A: No. These parts support 315, 433, 868, and 915 MHz frequencies. They do not support the upper end of the original MICRF022YM-FS12 frequency range (440 MHz).

Q: What is the difference between ATA8510-GHQW and ATA8515-GHQW?

A: Both parts are functionally equivalent RF transceiver plus microcontroller units with identical electrical specifications. The primary difference is packaging: ATA8510-GHQW is supplied in standard packaging, while ATA8515-GHQW is supplied in Cut Tape (CT) and Digi-Reel® packaging. ATA8515-GHQW has an MSL rating of 3 (168 hours) versus MSL 1 (unlimited) for ATA8510-GHQW.

Q: Does MICRF220AYQS include RSSI functionality?

A: Yes. MICRF220AYQS includes RSSI (Received Signal Strength Indicator) equipped functionality, enabling signal strength measurement capability.

Q: What supply voltage adjustment is required when substituting with MICRF219AAYQS or MICRF220AYQS?

A: The original MICRF022YM-FS12 operates at 4.75–5.5 V. MICRF219AAYQS and MICRF220AYQS operate at 3–3.6 V. Design power supply circuits must be modified to provide the lower voltage range.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All substitute parts listed (MICRF219AAYQS, MICRF220AYQS, MICRF230YQS, ATA8510-GHQW, ATA8515-GHQW) are ROHS3 compliant and REACH unaffected, maintaining regulatory alignment with the original part.

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