As consumer devices continue to shrink, engineers are working hard to reduce PCB area and costs wherever possible.
TDA 7255V is a VQFN-40 package variant of Infineon’s popular TDA 5255 transceiver. This new device comes in a tiny package and delivers highest sensitivity performance. It is targeted specifically at highly size-sensitive industrial and consumer applications, such as small home automation or security and alarm systems.
TDA 7255V is an ASK/FSK single-channel transceiver for the 434MHz ISM frequency band. The device is highly integrated and requires only a few external components. The extreme low current consumption in receive, transmit and power-down mode and the wide supply voltage range make it ideal for home automation, industrial controls and low-bit-rate communications.
TDA 7255V block diagram
Features
- ASK and FSK operation
- Frequency range: 433 to 435MHz
- -112dBm ASK/-115dBm FSK sensitivity (typ. at 4kbit/s datarate)
- Very low supply current in power down mode (5nA typ.)
- Supply voltage range: 2.1 to 5.5V
- Fully integrated VCO, PLL synthesizer and loop filter with on-chip crystal oscillator tuning
- 5.5 x 6.5mm small VQFN-40 package
Applications
- Bi-directional remote control systems
- Home automation
- Lighting control
- Security and alarm systems
- Industrial control
- Low bit-rate communication systems