ATA5760 Datasheet, PDF (1/41 Pages) ATMEL Corporation – UHF ASK/FSK Receiver

Features
• Two Different IF Receiving Bandwidth Versions Are Available
(B_IF = 300 kHz or 600 kHz)
• Frequency Receiving Range of
f₀ = 868 MHz to 870 MHz or f₀ = 902 MHz to 928 MHz
• 30 dB Image Rejection
• Receiving Bandwidth B_IF = 600 kHz for Low Cost 90-ppm Crystals and B_IF = 300 kHz for
55 ppm Crystals
• Fully Integrated LC-VCO and PLL Loop Filter
• Very High Sensitivity with Power Matched LNA
• High System IIP3 (–16 dBm), System 1-dB Compression Point (–25 dBm)
• High Large-signal Capability at GSM Band
(Blocking –30 dBm at +20 MHz, IIP3 = –12 dBm at +20 MHz)
• 5V to 20V Automotive Compatible Data Interface
• Data Clock Available for Manchester- and Bi-phase-coded Signals
• Programmable Digital Noise Suppression
• Low Power Consumption Due to Configurable Polling
• Temperature Range –40°C to +105°C
• ESD Protection 2 kV HBM, All Pins
• Communication to Microcontroller Possible Via a Single Bi-directional Data Line
• Low-cost Solution Due to High Integration Level with Minimum External Circuitry
Requirements
UHF ASK/FSK
Receiver
ATA5760
ATA5761
1. Description
The ATA5760/ATA5761 is a multi-chip PLL receiver device supplied in an SO20 pack-
age. It has been especially developed for the demands of RF low-cost data
transmission systems with data rates from 1 kBaud to 10 kBaud in Manchester or
Bi-phase code. The receiver is well suited to operate with the Atmel’s PLL RF trans-
mitter T5750. Its main applications are in the areas of telemetering, security
technology and keyless-entry systems. It can be used in the frequency receiving
range of f₀ = 868 MHz to 870 MHz or f₀ = 902 MHz to 928 MHz for ASK or FSK data
transmission. All the statements made below refer to 868.3 MHz and 915.0 MHz
applications.
Figure 1-1. System Block Diagram
UHF ASK/FSK
Remote control transmitter
T5750
UHF ASK/FSK
Remote control receiver
ATA5760/
ATA5761 _Demod.
Control
XTO
PLL
VCO
Antenna Antenna
IF Amp
PLL
XTO
1...5
µC
Power
amp.
LNA
VCO
4896C–RKE–04/06