TDA5250D2 Datasheet, PDF (3/97 Pages) Infineon Technologies AG – ASK/FSK 868MHz Wireless Transceiver

confidential
TDA 5250 D2
preliminary
Product Info
Product Info
General Description
The IC is a low power consumption ^Package
single chip FSK/ASK Transceiver for
half duplex low datarate communica-
tion in the 868-870MHz band. The IC
offers a very high level of integration
and needs only a few external compo-
nents. 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 genera-
tion, an FSK demodulator, a fully inte-
grated 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
I Low supply current (I_s = 9mA typ.
receive, I_s = 12mA typ. transmit
mode)
I On-chip low pass channel select fil-
ter and data filter with tuneable
bandwidth
I Supply voltage range 2.1 - 5.5V
I Power down mode with very low
supply current consumption
I FSK and ASK modulation and
demodulation capability
I Data slicer with self-adjusting
threshold and 2 peak detectors
I FSK sensitivity <-109dBm, ASK
sensitivity < –109dBm
I Transmit power up to +13dBm
I Fully integrated VCO and PLL
I Datarates up to 64kBit/s
synthesizer and loop filter on-chip
with on chip crystal oscillator tuning
I
Self-polling logic with ultra fast data
rate detection
I I²C/3-wire µController Interface
Applications
I Low Bitrate Communication
Systems
I Keyless Entry Systems
I Remote Control Systems
I Alarm Systems
I Telemetry Systems
I Electronic Metering
I Home Automation Systems
Ordering Information
Type
TDA 5250
Ordering Code
Package
P-TSSOP-38-1
Wireless Components
Product Info
Specification, July 2002