TDA5250D2_07 Datasheet, PDF (5/94 Pages) Infineon Technologies AG – ASK/FSK 868MHz Wireless Transceiver

ASK/FSK 868MHz Wireless Transceiver
TDA5250 D2
Version 1.7
Product Info
General Description
The IC is a low power consumption single chip FSK/ASK
Transceiver for half duplex low datarate communication in the
868-870MHz 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 (Is = 9mA typ. receive,
Is = 12mA typ. transmit mode)
■ Supply voltage range 2.1 - 5.5V
■ Power down mode with very low supply cur-
rent consumption
■ FSK and ASK modulation and demodula-
tion 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 64kBit/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
TDA5250 D2
Ordering Code
SP000012956
Package
<Dev_Package1>
Data Sheet
5
2007-02-26