MICRF610_0608 MICREL [Micrel Semiconductor], MICRF610_0608 Datasheet

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MICRF610_0608

Manufacturer Part Number
MICRF610_0608
Description
868-870MHz ISM Band Transceiver Module
Manufacturer
MICREL [Micrel Semiconductor]
Datasheet
General Description
The MICRF610 is a self-contained frequency shift keying
(FSK) transceiver module, intended for use in half-duplex,
bidirectional
transceiver module is intended for UHF radio equipment in
compliance with European Telecommunication Standard
Institute (ETSI) specification EN300 220.
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 “1”). If the I channel leads the Q
channel, then the FSK tone is below the LO frequency
(data “0”). 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:
www.micrel.com.
RadioWire® is a trademark of Micrel, Inc.
July 2006
Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1 (
RF
links.
The
multi-channeled
FSK
Features
• “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
Applications
• Telemetry
• Remote metering
• Wireless controller
• Remote data repeater
• Remote control systems
• Wireless modem
• Wireless security system
408
) 944-0800 • fax + 1 (408) 474-1000 • http://www.micrel.com
868-870MHz ISM Band Transceiver
MICRF610
Module
RadioWire
M9999-120205
®
Module

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MICRF610_0608 Summary of contents

Page 1

General Description The MICRF610 is a self-contained frequency shift keying (FSK) transceiver module, intended for use in half-duplex, bidirectional RF links. The transceiver module is intended for UHF radio equipment in compliance with European Telecommunication Standard Institute (ETSI) specification EN300 ...

Page 2

Micrel, Inc. Contents General Description ................................................................................................................................................................ 1 Features .................................................................................................................................................................................. 1 Applications ............................................................................................................................................................................. 1 Contents .................................................................................................................................................................................. 2 ® RadioWire RF Module Selection Guide................................................................................................................................. 3 Ordering Information ............................................................................................................................................................... 3 Block Diagram ......................................................................................................................................................................... 3 Pin Configuration..................................................................................................................................................................... 4 Pin Description ........................................................................................................................................................................ 4 (1) Absolute ...

Page 3

Micrel, Inc. ® RadioWire RF Module Selection Guide Frequency Device Range MICRF600 902-928 MHz MICRF600Z MICRF610 868-870 MHz MICRF610Z MICRF620 430-440 MHz MICRF620Z RFB433B 430-440 MHz RFB868B 868-870 MHz RFB915B 902-928 MHz Ordering Information Part Number MICRF610 TR MICRF610Z TR ...

Page 4

Micrel, Inc. Pin Configuration Pin Description Pin Number Pin Name SCLK DATAIXO 7 DATACLK RSSI 10 GND 11 GND 12 GND 13 ANT 14 GND 15 VDD ...

Page 5

Micrel, Inc. Absolute Maximum Ratings Supply Voltage (V )...................................................+2.7V DD Voltage on any pin (GND = 0V). ..................... -0.3V to 2.7V Lead Temperature (soldering, 5 sec.) ......................+225°C Storage Temperature (T ) ............................-30°C to +85°C s (3) ESD Rating ..................................................................2kV Electrical ...

Page 6

Micrel, Inc. Parameter Receive Section Rx Current Consumption Rx Current Consumption Variation -3 Receiver Sensitivity, (BER < Receiver Maximum Input Power Receiver Sensitivity Tolerance Receiver Bandwidth Co-Channel Rejection Adjacent Channel Rejection Blocking 1dB Compression Input IP3 Input IP2 ...

Page 7

Micrel, Inc. Programming General The MICRF610 functions are enabled through a number of programming bits. The programming bits are organized as a set of addressable control registers, each register holding 8 bits. There are 23 control registers in total in ...

Page 8

Micrel, Inc. Writing to the Control Registers in MICRF610 Writing: A number of octets are entered into MICRF610, followed by a load-signal to activate the new setting. Making these events is referred “write sequence.” possible ...

Page 9

Micrel, Inc. How to write: • Bring CS high • Use SCLK and IO to clock in the 23 octets • Bring CS low Refer to the figure in the next section, “Writing to n registers having incremental addresses”. Writing ...

Page 10

Micrel, Inc. Programming Interface Timing Figure 4 and Table 6 show the timing specification for the 3-wire serial programming interface. Tcsr SCLK CS IO Symbol Parameter Tper Min. period of SCLK (Voltage dividers on IO lines will slow down the ...

Page 11

Micrel, Inc. Power on Reset When applying voltage to the MICRF610 a power on reset state is entered. During the time period of power on reset, the MICRF610 should be considered unknown state and the user ...

Page 12

Micrel, Inc. Frequency Synthesizer A6… 0001010 - - A0_5 A0_4 0001011 - - - - 0001100 N0_7 N0_6 N0_5 N0_4 0001101 - - - - 0001110 M0_7 M0_6 M0_5 M0_4 0001111 - - A1_5 A1_4 0010000 ...

Page 13

Micrel, Inc. Tuning range 1000 950 900 850 800 0 0,5 1 1,5 Varactor voltage (V) Figure 6. RF Frequency vs. Varactor Voltage and VCO Frequency bit (V Lock Detect A6.. 0000001 ‘1’ ‘0’ ‘0’ ...

Page 14

Micrel, Inc. Transceiver Sync/Non-Synchronous Mode A6.. 0000000 LNA_by PA2 0000110 - ‘0’ 0000111 BitRate_clkS1 BitRate_clkS0 Sync_en State Comments 0 Rx: Bit Transparent reception of data synchronization off 0 Tx: DataClk pin off Transparent transmission of data 1 Rx: ...

Page 15

Micrel, Inc. Front End A6.. 0000000 LNA_by PA2 PA1 PA0 Sync_en A low noise amplifier in RF receivers is used to boost the incoming signal prior to the frequency conversion process. This is important in order ...

Page 16

Micrel, Inc. RSSI 33kohm, 1nF, 15kbps, BW=200kHz, Vdd=2.5V 2,25 2 1,75 1,5 1,25 1 0,75 0,5 -120 -110 -100 -90 Input power [dBm] Figure 10. RSSI Voltage A Typical plot of the RSSI voltage as function of input power is ...

Page 17

Micrel, Inc. A bit synchronizer can be enabled in receive mode by selecting the synchronous mode (Sync_en=1). The DataClk pin will output a clock with twice the frequency of the bit rate (a bit rate of 20 kbit/sec gives a ...

Page 18

Micrel, Inc. Application Circuit Illustration Figure 11. Circuit illustration of MICRF610, LDO and MCU Figure 11 shows a typical set-up with the MICRF610, a Low-Drop-Out voltage regulator (LDO) controller (MCU). When the MICRF610 and the MCU runs on the same ...

Page 19

Micrel, Inc. Layout Recommended Land Pattern Figure 14 shows a recommended land pattern that facilitates both automatic and hand assembling. Figure 14. Recommended Land Pattern (TOP VIEW) July 2006 Layout Considerations Except for the antenna input/output signal, only digital and ...

Page 20

Micrel, Inc. Package Dimensions Tape Dimensions MICREL, INC. 2180 FORTUNE DRIVE SAN JOSE, CA 95131 USA TEL +1 (408) 944-0800 FAX +1 (408) 474-1000 WEB http:/www.micrel.com The information furnished by Micrel in this data sheet is believed to be accurate ...

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