MICRF620Z TR
MICRF620Z TR Datasheet
MICRF620
| Part | Datasheet |
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MICRF620Z TR |
MICRF620Z TR (pdf) |
| Related Parts | Information |
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MICRF620Z |
MICRF620Z |
| PDF Datasheet Preview |
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| MICRF620 434MHz ISM Band Transceiver Module The MICRF620 is a self-contained frequency shift keying FSK transceiver module, intended for use in half-duplex, bidirectional RF links. The multi-channeled FSK transceiver module is intended for UHF radio equipment in compliance with the European Telecommunication Standard Institute ETSI specification, EN300 The transmitter consists of a fully programmable PLL frequency synthesizer and power amplifier. The frequency synthesizer consists of a voltage-controlled oscillator VCO , a crystal oscillator, dual modulus prescaler, programmable frequency dividers, and a phase-detector. The output power of the power amplifier can be programmed to seven levels. A lock-detect circuit detects when the PLL is in lock. In receive mode, the PLL synthesizer generates the local oscillator LO signal. The N, M, and A values that give the LO frequency are stored in the N0, M0, and A0 registers. The receiver is a zero intermediate frequency IF type that makes channel filtering possible with low-power, integrated low-pass filters. The receiver consists of a low noise amplifier LNA that drives a quadrature mix pair. The mixer outputs feed two identical signal channels in phase quadrature. Each channel includes a pre-amplifier, a third order Sallen-Key RC low-pass filter that protects the following switched-capacitor filter from strong adjacent channel signals, and a limiter. The main channel filter is a switched-capacitor implementation of a six-pole elliptic low pass filter. The cut-off frequency of the Sallen-Key RC filter can be programmed to four different frequencies 100kHz, 150kHz, 230kHz, and 350kHz. The I and Q channel outputs are demodulated and produce a digital data output. The demodulator detects the relative phase of the I and the Q channel signal. If the I channel signal lags behind the Q channel, the FSK tone frequency is above the LO frequency data If the I channel leads the Q channel, then the FSK tone is below the LO frequency data The output of the receiver is available on the DataIXO pin. A receive signal strength indicator RSSI circuit indicates the received signal level. All support documentation can be found on Micrel’s web site at: Module • “Drop in” RF solution • Small size 11.5x14.1mm • RF tested • Low Power • Surface Mountable • Tape & Reel • Digital Bit Synchronizer • Received Signal Strength Indicator RSSI • RX and TX power management • Power down function • Register read back function • Telemetry • Remote metering • Wireless controller • Remote data repeater • Remote control systems • Wireless modem • Wireless security system is a trademark of Micrel, Inc. Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1 408 944-0800 • fax + 1 408 474-1000 • July 2006 M9999-120205 Micrel, Inc. MICRF620/MICRF620Z Contents General Description 1 Features 1 Applications 1 Contents 2 RF Module Selection 3 Ordering Information 3 Block Diagram 3 Pin 4 Pin Description 4 Absolute Maximum Ratings 1 5 Operating Ratings 2 5 Electrical 5 7 General 7 Writing to the Control Registers in MICRF620 8 Writing to a Single Register 8 Writing to All Registers 8 Writing to n Registers Having Incremental Addresses 9 Reading from the Control Registers in MICRF620 9 Reading n Registers from 9 Programming Interface 10 Power on Reset 11 Programming 11 Frequency Synthesizer 12 Crystal Oscillator XCO 12 VCO 12 Lock Detect 13 Modes of 13 Transceiver Sync/Non-Synchronous Mode 14 Data Interface 14 Receiver 14 Front End 15 Sallen-Key 15 Switched Capacitor 15 16 FEE 16 Bit 17 Transmitter 17 Power 17 Frequency Modulation 17 Using the XCO-tune Bits 17 Application Circuit Illustration 18 Assembling the MICRF620 19 Recommended Reflow Temperature Profile 19 Shock/Vibration during 19 Handassembling the 19 Recommended Land 19 Layout Considerations 20 Package Dimensions 21 Tape Dimensions 21 July 2006 M9999-120205 Micrel, Inc. MICRF620/MICRF620Z RF Module Selection Guide Device MICRF600 MICRF600Z MICRF610 MICRF610Z MICRF620 MICRF620Z RFB433B RFB868B RFB915B Frequency Range 902-928 MHz 868-870 MHz 430-440 MHz 430-440 MHz 868-870 MHz 902-928 MHz Data Rate <20 kbps <15 kbps <20 kbps kbaud Supply Receive Voltage Transmit 28 mA Lead-free MICRF600 28 mA Lead-free MICRF610 24 mA Lead-free MICRF620 8 mA V 42 mA 10 mA V 50 mA 10 mA V 50 mA Modulation Type Package 11.5x14.1 mm 11.5x14.1 mm 11.5x14.1 mm 1”x1” 1”x1” 1”x1” Ordering Information Part Number MICRF620 TR MICRF620Z TR Junction Temp. Range 1 to +75°C to +75°C Package x 14.1mm x 14.1mm Block Diagram IFAMP LO-Buffer IFAMP Sallen-key Main filter Sallen-key Main filter DIV 4 Control logic Clock recovery Demodulator SCLK IO CS RSSI DATAIXO DATACLK PA-buffer Deviation control Modulator Bias Frequency Synthesiser RSSI LD July 2006 MICRF620 3 M9999-120205 Micrel, Inc. Pin Configuration MICRF620/MICRF620Z Pin Description Pin Number 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Pin Name NC CS SCLK IO DATAIXO DATACLK LD RSSI GND ANT GND VDD GND MICRF620 TR x mm Top view Type I/O I/O Pin Function Not connected Not connected Chip select, three wire programming interface Clock, three wire programming interface Data, three wire programming interface Data receive/transmit, bi-directional Data clock receive/transmit Lock detect Receive signal strength indicator Ground RF In/Out Ground VDD 2.0-2.5V Ground July 2006 M9999-120205 |
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