ATA8401_09 Datasheet, PDF (1/12 Pages) ATMEL Corporation – UHF ASK/FSK Industrial Transmitter

Features
• Integrated PLL Loop Filter
• ESD Protection (4 kV HBM/200V MM; Except Pin 2: 4 kV HBM/100V MM)
also at ANT1/ANT2
• High Output Power (8.0 dBm) with Low Supply Current (9.0 mA)
• Modulation Scheme ASK/FSK
– FSK Modulation is Achieved by Connecting an Additional Capacitor Between the
XTAL Load Capacitor and the Open Drain Output of the Modulating Microcontroller
• Easy to Design-in Due to Excellent Isolation of the PLL from the PA and Power Supply
• Single Li-cell for Power Supply
• Supply Voltage 2.0V to 4.0V in the Temperature Range of –40°C to +85°C
• Package TSSOP8L
• Single-ended Antenna Output with High Efficient Power Amplifier
• CLK Output for Clocking the Microcontroller
• One-chip Solution with Minimum External Circuitry
Applications
• Industrial/Aftermarket Remote Keyless Entry Systems
• Alarm, Telemetering, and Energy Metering Systems
• Remote Control Systems for Consumer and Industrial Markets
• Access Control Systems
• Home Automation
• Home Entertainment
• Toys
UHF ASK/FSK
Industrial
Transmitter
ATA8401
1. Description
The ATA8401 is a PLL transmitter IC, which has been developed for the demands of
RF low-cost transmission systems for industrial applications at data rates up to
50 kBaud ASK and 32 kBaud FSK modulation scheme. The transmitting frequency
range is 310 MHz to 350 MHz. It can be used in both FSK and ASK systems.
Figure 1-1. System Block Diagram
1 Li cell
Keys
Encoder
ATARx9x
UHF ASK/FSK
Remote control transmitter
UHF ASK/FSK
Remote control receiver
ATA8401
ATA8201
ATA8203
Demod
Control
1 to 3 Micro-
controller
XTO
PLL
VCO
Antenna Antenna
IF Amp
PLL
XTO
LNA
LNA
VCO
4984C–INDCO–04/09