MICRF620Z TR Micrel Inc, MICRF620Z TR Datasheet

MICRF620Z TR

Manufacturer Part Number

MICRF620Z TR

Description

RF Module ( )

Manufacturer

Micrel Inc

Datasheet

1.MICRF620Z_TR.pdf (21 pages)

Specifications of MICRF620Z TR

Frequency

430MHz ~ 440MHz

Data Rate - Maximum

20kbps

Modulation Or Protocol

FSK

Applications

ISM

Power - Output

10dBm

Sensitivity

-110dBm

Voltage - Supply

2 V ~ 2.5 V

Current - Receiving

12mA

Current - Transmitting

24mA

Data Interface

PCB, Surface Mount

Antenna Connector

PCB, Surface Mount

Operating Temperature

-20°C ~ 75°C

Package / Case

Module

Lead Free Status / RoHS Status

Lead free / RoHS Compliant

Memory Size

Lead Free Status / RoHS Status

Lead free / RoHS Compliant

Other names

576-1468-2
MICRF620TR
MICRF620ZTR

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General Description

The MICRF620 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

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 (

with

links.

the

European

The

multi-channeled

Telecommunication

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

434MHz ISM Band Transceiver Module

) 944-0800 • fax + 1 (408) 474-1000 • http://www.micrel.com

MICRF620

RadioWire

M9999-120205

Module

Related parts for MICRF620Z TR

MICRF620Z TR Summary of contents

Page 1

... All support documentation can be found on Micrel’s web site at: www.micrel.com. RadioWire® trademark of Micrel, Inc. Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1 ( July 2006 434MHz ISM Band Transceiver Module multi-channeled ...

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

... MHz MICRF610Z MICRF620 430-440 MHz MICRF620Z RFB433B 430-440 MHz RFB868B 868-870 MHz RFB915B 902-928 MHz Ordering Information Part Number MICRF620 TR MICRF620Z TR Block Diagram ANT July 2006 Supply Data Rate Receive Voltage <20 kbps 13.5 mA 2.0-2.5 v Lead-free MICRF600 <15 kbps 13 ...

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 < 10^ ) 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 MICRF620 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 MICRF620 Writing: A number of octets are entered into MICRF620, 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 MICRF620 a power on reset state is entered. During the time period of power on reset, the MICRF620 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. VCO frequency gain, Vdd=2.5V 480 460 440 420 400 380 0 0,4 0,8 1,2 V_varactor [V] Figure 6. RF Frequency vs. Varactor Voltage and VCO Frequency bit (V Lock Detect A6.. 0000001 ‘1’ ...

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 Rx: Bit 0 Transparent reception of data synchronization off Transparent transmission of 0 Tx: DataClk pin off data Rx: Bit ...

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 A6.. 0000001 ‘1’ ‘0’ ‘0’ ‘0’ RSSI_en RSSI 33kohm, 1nF, 20kbps, 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 ...

Page 17

Micrel, Inc. Bit Synchronizer A6.. 0000110 - ‘0’ 0000111 BitRate_clkS1 BitRate_clkS0 RefClk_K5 RefClk_K4 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 ...

Page 18

Micrel, Inc. If FEE = -128 and still counting dwn-pulses: 1) =>-129 = +127 2) 126 3) 125 To avoid this situation, always make sure max count is between limits. Application Circuit Illustration Figure 11. Circuit illustration of MICRF620, LDO ...

Page 19

Micrel, Inc. Assembling the MICRF620 Recommended Reflow Temperature Profile When the MICRF620 module is being automatically assembled to a PCB, care must be taken not to expose the module for temperature above the maximum specified. Figure 13 shows the recommended ...

Page 20

Micrel, Inc. Layout Considerations Except for the antenna input/output signal, only digital and low frequency signals need to interface with the module. There is therefore no need of years of RF expertise successful layout, as long as ...

Page 21

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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