ATA5781NRF/IF射頻/中頻RFID的射頻接收器規(guī)格書PDF中文資料

Features

● AVR? microcontroller core with 1Kbyte SRAM and 24Kbyte RF library in firmware

(ROM)

● Atmel? ATA5782: 20Kbyte of user flash

● Atmel ATA5783: 20Kbyte of user ROM

● Atmel ATA5781: No user memory — RF library in firmware only

● Supported frequency ranges

● Low-band 310MHz to 318MHz, 418MHz to 477MHz

● High-band 836MHz to 956MHz

● 315.00MHz/433.92MHz/868.30MHz and 915.00MHz with one 24.305MHz crystal

● Low current consumption

● 9.8mA for RXMode (low-band), 1.2mA for 21ms cycle three-channel polling

● Typical OFFMode current of 5nA (maximum 600nA at Vs = 3.6V and T = 85°C)

● Supports the 0dBm class of ARIB STD-T96

● Input 1dB compression point

● –48dBm (full sensitivity level)

● –20dBm (active antenna damping)

● Programmable channel frequency with fractional-N PLL

● 93Hz resolution for low-band

● 185Hz resolution for high-band

● FSK deviation ±0.375kHz to ±93kHz

● FSK sensitivity (Manchester coded) at 433.92MHz

● –108.5dBm at 20Kbit/s ?f = ± 20kHz BWIF = 165kHz

● –111dBm at 10Kbit/s ?f = ± 10kHz BWIF = 165kHz

● –114dBm at 5Kbit/s ?f = ± 5kHz BWIF = 165kHz

● –122.5dBm at 0.75Kbit/s ?f = ± 0.75kHz BWIF = 25kHz

● ASK sensitivity (Manchester coded) at 433.92MHz

● –110.5dBm at 20Kbit/s BWIF = 80kHz

● –125dBm at 0.5Kbit/s BWIF = 25kHz

● Programmable Rx-IF bandwidth 25kHz to 366kHz (approximately 10% steps)

● Blocking (BWIF = 165kHz): 64dBc at frequency offset = 1MHz and 48dBc at 225kHz

● High image rejection: 55dB at 315MHz/433.92MHz and 47dB at 868.3MHz/915MHz

without calibration

● Supported data rate in buffered mode 0.5Kbit/s to 80Kbit/s (120Kbit/s NRZ)

● Supports pattern-based wake-up and start of frame identification

● Flexible service configuration concept with on-the-fly (OTF) modification (in IDLEMode) of SRAM service parameters

(data rate, …)

● Each service consists of

● One service-specific configuration part

● Three channel-specific configuration parts

● Three service configurations are located in EEPROM

● Two service configurations are located in SRAM and can be modified via SPI or embedded application

software

● Digital RSSI with very high relative accuracy of ±1dB thanks to digitized IF processing

● Programmable clock output derived from crystal frequency

● 1024byte EEPROM data memory for receiver configuration

● SPI interface for Rx data access and receiver configuration

● 500Kbit SPI data rate for short periods on SPI bus and host controller

● On demand services (SPI or API) without polling or telegram reception

● Integrated temperature sensor

● Self check and calibration with temperature measurement

● Configurable EVENT signal indicates the status of the IC to an external microcontroller

● Automatic low-power channel polling

● Flexible polling configuration concerning timing, order and participating channels

● Fast reaction time

● Power-up (typical 1.5ms, OFFMode -> RXMode)

● Supports mixed ASK/FSK telegrams

● Non-byte aligned data reception

● Software customization

● Antenna diversity with external switch via GPIO control

● Antenna diversity with internal SPDT switch

● Supply voltage ranges 1.9V to 3.6V and 2.4V to 5.5V

● Temperature range –40°C to +105°C

● ESD protection at all pins (±4kV HBM, ±200V MM, ±750V FCDM)

● Small 5?5mm QFN32 package/pitch 0.5mm

● Backward package and pin-to-pin compatibility with Atmel? ATA5780N

● Backward RF matching compatibility with Atmel ATA5780N (RF redesign not needed)

● Suitable for applications governed by EN 300 220 and FCC part 15, title 47