TRF7961数据手册RF/IF射频/中频RFID的RFID射频接入监控IC规格书PDF

描述 Description

The TRF7960 andTRF7961 devices are integrated analog front end and data-framing systems for a 13.56-MHzRFID reader system that supports multiple protocolsincluding ISO/IEC 14443 A and B, FeliCa™, andISO/IEC 15693. Built-in programming options make it suitable for a wide range of applications forproximity and vicinity identification systems.
The reader is configured by selecting the desired protocol in the control registers.Direct access to all control registers allows fine-tuning of various reader parameters asneeded.
The device supports data rates up to 848 kbps with all framing and synchronizationtasks for the ISO protocols onboard. Other standards and even custom protocols can be implementedby using one of the direct modes that the device offers. These direct modes let the applicationfully control the AFE and also gain access to the raw subcarrier data or the unframed, but alreadyISO-formatted, data and the associated (extracted) clock signal.
The receiver system has a dual-input receiver architecture to maximize communicationrobustness. The receivers also include various automatic and manual gain control options. Thereceived signal strength from transponders, ambient sources, or internal levels is available in theRSSI register.
A SPI or parallel interface can be used for the communication between the MCU and theTRF796x reader. When the built-in hardware encoders and decoders are used, transmit and receivefunctions use a 12-byte FIFO register. For direct transmit or receive functions, the encoders ordecoders can be bypassed so the MCU can process the data in real time.
The TRF7960 and TRF7961 devices support a wide supply voltage range of 2.7 V to 5.5 Vand data communication levels from 1.8 V to 5.5 V for the MCU I/O interface.
The transmitter has selectable output power levels of 100 mW (+20 dBm) or 200 mW (+23dBm) equivalent into a 50-Ω load when using a 5-V supply and supports OOK and ASK modulation withselectable modulation depth.
Built-in programmable auxiliary voltage regulator delivers up to 20 mA to supply an MCUand additional external circuits within the reader system.
Start evaluating the TRF7960 multiprotocol transceiver IC with theTRF7960AEVM or theTRF7960ATB.
Documentation,Tools, Reference Designs, andSoftware, Samples

特性 Features

• Completely Integrated Protocol Handling
• Separate Internal High-PSRR PowerSupplies for Analog, Digital, and PA Sections Provide Noise Isolation for Superior Read Range andReliability
• Dual Receiver Inputs With AM and PM Demodulation to MinimizeCommunication Holes
• Receiver AM and PM RSSI
• Reader-to-Reader Anticollision
• High Integration Reduces Total BOM and BoardArea
- Single External 13.56-MHz CrystalOscillator
• MCU-Selectable Clock-Frequency Output of RF, RF/2, orRF/4
• Adjustable 20-mA High-PSRR LDO for Powering ExternalMCU

• Easy to Use With High Flexibility
- Automatically Configured Default Modes for Each Supported ISOProtocol
• 12 User-Programmable Registers
• Selectable Receiver Gain
• Programmable Output Power (100 mW or 200 mW)
• Adjustable ASK Modulation Range(8% to 30%)
• Built-In Receiver Band-Pass Filter With User-Selectable CornerFrequencies

• Wide Operating Voltage Range of 2.7 Vto 5.5 V
• Ultra-Low-Power Modes
- Power Down:
• Parallel 8-Bit or Serial 4-Pin Serial Peripheral Interface (SPI) With MCU Using 12-ByteFIFO
• Ultra-Small 32-Pin QFN Package(5 mm × 5 mm)
• Available Tools (Also See Tools and Software)
- Reference Designand EVM With Development Software
• Source Code Available forMSP430™ MCU