ATA5811/ATA5812 Manuals

Atmel ATA5811/ATA5812 UHF ASK/FSK Transceiver Manual

The ATA5811/ATA5812 is a highly integrated UHF ASK/FSK single‑channel half‑duplex transceiver offered in a compact 7 × 7 mm QFN48 package. It delivers adjustable output power from 0 to 10 dBm, high PA efficiency (up to 38 %), and operates over a wide supply voltage range (2.4 V–3.6 V or 4.4 V–6.6 V) with low current consumption (10.5 mA in RX/TX). The device supports data rates from 1 kBaud to 20 kBaud (FSK) and 1 kBaud to 10 kBaud (ASK) and works in the 433 MHz, 868 MHz and 315 MHz bands.

Typical applications include automotive keyless entry, remote‑control systems, alarm and telemetry, energy metering, and home automation. The manual details pin descriptions, block diagrams, and example circuits for one‑battery and two‑battery key‑fob designs as well as base‑station implementations, helping designers integrate the transceiver with minimal external components.

Covers: Features · General Description · Pin Description · Application Circuits · Block Diagram · Electrical Characteristics