MICRF220AYQS-TR: A 3V Superheterodyne UHF ASK Receiver

The MICRF220AYQS-TR is a highly integrated, low-power superheterodyne UHF receiver designed for ASK (Amplitude Shift Keying) demodulation applications. Operating from a single 3V power supply, this device is engineered for robust performance in ultra-high frequency (UHF) bands, making it an ideal solution for wireless communication systems such as remote keyless entry (RKE), home automation, industrial control, and sensor networks.

A key advantage of the MICRF220AYQS-TR is its superheterodyne architecture, which provides superior sensitivity, selectivity, and interference rejection compared to simpler superregenerative alternatives. This architecture allows the receiver to maintain stable performance even in noisy RF environments, ensuring reliable data reception. The device supports a wide frequency range, typically from 300 MHz to 450 MHz, accommodating various regional ISM band requirements.

The IC integrates a complete RF front-end, including a low-noise amplifier (LNA), mixer, local oscillator (LO), phase-locked loop (PLL), and intermediate frequency (IF) stages. This high level of integration minimizes external component count, reduces board space, and simplifies design-in efforts. Additionally, it features RSSI (Received Signal Strength Indicator) output, enabling system-level functions like link quality assessment and power control.

Optimized for low power consumption, the MICRF220AYQS-TR is suitable for battery-powered applications where energy efficiency is critical. Its ASK modulation scheme is straightforward to implement and pairs well with common low-cost transmitters, providing a balanced trade-off between data rate, range, and complexity.

ICGOOODFIND

The MICRF220AYQS-TR stands out as a versatile and efficient UHF ASK receiver, combining high integration, excellent noise immunity, and low power operation in a compact package, making it a preferred choice for cost-sensitive wireless applications.

Keywords:

Superheterodyne Receiver

UHF ASK Demodulation

3V Low Power Operation

Integrated RF Front-end

RSSI Output