TDA5255E1 Datasheet, PDF (5/93 Pages) Infineon Technologies AG – ASK/FSK 434MHz Wireless Transceiver

Confidential
ASK/FSK 434MHz Wireless Transceiver
TDA5255 E1
Version 1.1
Product Info
General Description
The IC is a low power consumption single chip FSK/ASK
Transceiver for half duplex low datarate communication in the
433-435MHz band. The IC offers a very high level of integration
and needs only a few external components. It contains a highly
efficient power amplifier, a low noise amplifier (LNA) with AGC,
a double balanced mixer, a complex direct conversion stage, I/
Q limiters with RSSI generation, an FSK demodulator, a fully
integrated VCO and PLL synthesizer, a tuneable crystal
oscillator, an onboard data filter, a data comparator (slicer),
positive and negative peak detectors, a data rate detection
circuit and a 2/3-wire bus interface. Additionally there is a power
down feature to save battery power.
Features
– Low supply current (I_s = 9mA typ. receive, I_s
= 13mA typ. transmit mode)
– Supply voltage range 2.1 - 5.5V
– Power down mode with very low supply
current consumption
– FSK and ASK modulation and demodulation
capability
– Fully integrated VCO and PLL
synthesizer and loop filter on-chip with on
chip crystal oscillator tuning
– I²C/3-wire µController Interface
– On-chip low pass channel select filter and
data filter with tuneable bandwidth
– Data slicer with self-adjusting threshold and
2 peak detectors
– FSK sensitivity <-109dBm, ASK sensitivity <
–109dBm
– Transmit power up to +13dBm
– Datarates up to 100kBit/s Manchester
Encoded
– Self-polling logic with ultra fast data rate
detection
Application
– Low Bitrate Communication
Systems
– Keyless Entry Systems
– Remote Control Systems
– Alarm Systems
– Telemetry Systems
– Electronic Metering
– Home Automation Systems
Type
TDA5255 E1
Preliminary Specification
Ordering Code
5
Package
P-TSSOP-38-1
2002-11-28