ATA8404 Datasheet, PDF (1/20 Pages) ATMEL Corporation – UHF ASK/FSK Industrial Transmitter

Features
• PLL Transmitter IC with Single-ended Output
• High Output Power (6 dBm)
• Low Current Consumption at 8.1 mA (315 MHz) and 8.5 mA (433 MHz)
• Divide by 24 (ATA8404) and 32 (ATA8405) Blocks for 13 MHz Crystal Frequencies and
for Low XTO Start-up Times
• ASK/FSK Modulation with Internal FSK Switch
• Up to 20 kBaud Manchester Coding, Up to 40 kBaud NRZ Coding
• Power-down
• ENABLE Input for Parallel Usage of Controlling Pins
• Supply Voltage 2.0V to 3.6V
• ESD Protection at all Pins (4 kV HBM)
• Small Package TSSOP10
Benefits
• Low Parasitic FSK Switch Integrated
• Fast Settling Time < 0.85 ms
• Small Form Factor
UHF ASK/FSK
Industrial
Transmitter
ATA8404
ATA8405
Applications
• Remote Control Systems
• Alarm, Telemetering, and Energy Metering Systems
• Home Entertainment and Home Automation
• Industrial/Aftermarket Remote Keyless Entry Systems
• Toys
Preliminary
1. Description
The ATA8404/ATA8405 is a PLL transmitter IC, which has been developed for the
demands of RF low-cost transmission systems at data rates up to 20 kBaud Man-
chester coding and 40 kBaud NRZ coding. The transmitting frequency range is
313 MHz to 317 MHz (ATA8404) and 432 MHz to 448 MHz (ATA8405), respectively.
It can be used in both FSK and ASK systems.
Figure 1-1. System Block Diagram
1 Li cell
Encoder
Keys ^ATARx9x
UHF ASK/FSK
TPM and Remote control
transmitter
UHF ASK/FSK
Remote control receiver
ATA8404
ATA8405
PLL
ATA8201
ATA8202
ATA8203
ATA8204
Demod.
Control
XTO
VCO
Antenna Antenna
IF Amp
PLL
XTO
1...3
µC
Power
amp.
LNA
VCO
9136C–INDCO–10/09