This document is the specification of TDA 5212
The TDA 5212 is a low‑power single‑chip FSK/ASK superheterodyne receiver designed for 902‑928 MHz operation. It integrates a low‑noise amplifier, mixer, VCO, PLL synthesiser, crystal oscillator, limiter with RSSI generator, FSK demodulator, data filter, data slicer and peak detector, plus a power‑down feature for battery‑saving.
Key features include a supply voltage range of 5 V +10%, low supply currents (5.4 mA typ. in FSK mode, 4.8 mA typ. in ASK mode), a 90 nA power‑down current, ASK sensitivity better than -109 dBm, FSK sensitivity better than -102 dBm, and a PG‑TSSOP‑28 package. The document provides detailed pin definitions, functional block diagrams, electrical ratings, and application notes for keyless entry and remote‑control systems.
| Supply voltage range | 5 V +10% |
|---|---|
| Low supply current (FSK mode) | 5.4 mA typ. |
| Low supply current (ASK mode) | 4.8 mA typ. |
| Power‑down current | 90 nA typ. |
| Receive frequency range | 902‑928 MHz |
| ASK sensitivity | better than -109 dBm |
| FSK sensitivity | better than -102 dBm |
| Package type | PG‑TSSOP‑28 |
The device operates from 5 V with a tolerance of ±10 %.
In FSK mode the typical supply current is 5.4 mA.
The receiver covers frequencies from 902 MHz to 928 MHz.
The power‑down mode draws about 90 nA typical.