Microchip Technology ATR2820-PNQG 83

Overview

ATR2820-PNQG 83 from Atmel is a single-chip 5.8 GHz ISM-band RF transceiver in QFN32 package, integrating image-rejection mixer, low-IF filter, FM demodulator, RSSI, TX preamplifier, and fully integrated PLL/VCO. It delivers 5 dBm TX output power, –97 dBm RX sensitivity, 1152 kbit/s data rate, and operates from 2.9 V to 3.6 V - used in FCC Part 15-compliant digital cordless phones.

For engineers reviewing the ATR2820-PNQG 83 datasheet, ATR2820-PNQG 83 pinout, ATR2820-PNQG 83 application, or ATR2820-PNQG 83 equivalent, key selection considerations include its low-IF architecture, no-mechanical-adjustment production readiness, integrated VCO, and 5 mm × 5 mm QFN32 footprint with exposed thermal pad.

Technical Context

The ATR2820-PNQG 83 implements a low-IF receiver architecture with image-rejection mixer and on-chip bandpass filtering, eliminating external IF SAW filters. Its integrated PLL features a fully embedded VCO and charge-pump/VT circuitry, enabling stable frequency synthesis without loop filter components.

Transmit path includes a TX preamplifier and PA stage delivering 5 dBm into 50 Ω; receive path incorporates LNA, limiter, and digital demodulation logic for FM baseband recovery. All biasing, regulation (VREG_VCO, VS_IFA, VS_TRX), and control logic (TX_ON, RX_ON, ENABLE) are internally managed.

Key Specifications

Pinout & Package

ATR2820-PNQG 83 is housed in a 32-pin QFN package (5 mm × 5 mm, 0.5 mm pitch) with an exposed thermal pad (3.7 mm × 3.7 mm) for enhanced thermal performance. Pin functions are defined per Atmel document 4704BS–DECT–12/08.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 5.8 GHz transceiver applications.

Compared with Si24R1 and AX5043, the ATR2820-PNQG 83 uniquely integrates a 5.8 GHz VCO, FM demodulator, and low-IF receiver in one QFN32 package - enabling drop-in deployment in FCC Part 15-compliant 5.8 GHz voice and control links without RF subsystem redesign.

Availability

ATR2820-PNQG 83 is available at Aetrix Electronics and suitable for digital cordless phones, wireless game controllers, wireless headsets, and FCC Part 15 radio links requiring stable component supply and long-term manufacturability.

Supply support for ATR2820-PNQG 83 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Atmel Corporation, now part of Microchip Technology, designed high-performance microcontrollers and RF ICs for embedded connectivity and timing-critical applications.

The ATR2820 product line was developed specifically for integrated 5.8 GHz ISM-band transceivers in consumer wireless audio and control systems - emphasizing production simplicity, regulatory compliance, and minimal external component count.

FAQ

What is the operating frequency range of the ATR2820-PNQG 83?

The ATR2820-PNQG 83 operates exclusively in the 5.8 GHz ISM band (5.725–5.875 GHz), as specified in Atmel document 4704BS–DECT–12/08. It is not tunable outside this range and does not support 2.4 GHz or sub-GHz operation. The integrated VCO and RF front-end are optimized for this band only.

Does the ATR2820-PNQG 83 require external IF filtering?

No, the ATR2820-PNQG 83 uses a low-IF architecture with on-chip bandpass filtering and image-rejection mixing, eliminating the need for external IF SAW filters or IF amplifiers. This is confirmed in the block diagram and feature list of the official summary document.

What is the function of the EXPOSED PAD on the ATR2820-PNQG 83 QFN package?

The exposed pad (3.7 mm × 3.7 mm) on the ATR2820-PNQG 83 QFN package must be soldered to a solid thermal plane on the PCB for effective heat dissipation and RF grounding. Per Atmel's mechanical drawing 6.543-5096.01-4, it is electrically connected to ground and critical for thermal stability during TX operation.

Can the ATR2820-PNQG 83 be used in battery-powered wireless headsets?

Yes - the ATR2820-PNQG 83 supports 2.9 V to 3.6 V operation and features low current consumption, making it suitable for coin-cell or small Li-po powered wireless headsets. Its integrated RSSI and FM demodulator simplify analog audio interface design without external baseband processors.

Is the ATR2820-PNQG 83 pin-compatible with other Atmel transceivers like the ATR0620?

No - the ATR2820-PNQG 83 has a unique 32-pin QFN pinout defined in document 4704BS–DECT–12/08 and is not pin-compatible with ATR0620 or any other Atmel transceiver. Pin assignments such as RX_IN, TX_OUT, REF_CLK, and RX_ON are specific to the ATR2820-PNQG 83 architecture and layout.