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CIRCUIT DESIGN, INC.

 

CDP-RX-03AS UHF Radio Data Module Operation Guide

 

 

8

BLOCK DIAGRAM 

 

2.7V

MIXER

/IF-AMP

SAW

FILTER

RF-AMP

BAND PASS

FILTER

ANT

GND

2nd MIX

/IF-AMP

/DEMOD.

VCO/PLL

REGULATOR

Vcc

CTRL

RSSI

XTAL

FILTER

BAND PASS

FILTER

DATA

DETECT

BUFFER

DATA

AFOUT

GND

 

 

 

Summary of Contents for CDP-RX-03AS

Page 1: ...AND RADIO DATA RECEIVER Operation Guide Version 2 0 February 2001 CIRCUIT DESIGN INC International Business Division 7557 1 Hotaka Hotaka machi Minamiazumi Nagano 399 8303 JAPAN Tel 0263 82 1024 Fax 0263 82 1016 e mail cdint po circuitdesign co jp http www circuitdesign co jp ...

Page 2: ...UHF Radio Data Module Operation Guide 2 CONTENTS GENERAL DESCRIPTION FEATURES 3 OPERATION INSTRUCTIONS 4 Supply voltage 4 Data format 4 Outputs 4 Antennas 5 SPECIFICATIONS 6 PIN DESCRIPTION 7 BLOCK DIAGRAM 8 DIMENSIONS 9 TEST DATA 10 ...

Page 3: ...gh signal sensitivity high selectivity and high frequency stability not achieved by simple SAW resonator receivers or other low cost designs Extensive filtering by an integrated unique SAW filter element enables operation in hazardous areas where interference may be expected Steadily increasing use of the available frequency spectrum demands the application of narrow band systems for maximum opera...

Page 4: ...prevent damage by incorrect polarity If a higher supply voltage is available then a simple diode can be inserted in connection line to the Vcc terminal to prevent damage by incorrect polarity The diode must be rated for the maximum supply current detailed in the technical specifications Data format Long intervals of HIGH or LOW bits should be avoided Succeeding bits can be distorted in their pulse...

Page 5: ...hm Coax antenna wire can be used The shielding of the antenna wire should be soldered to the case near the antenna input of the CDP RX 03AS It is possible but not recommended to connect the receiver module and the antenna by a connection on a PCB This will decrease the receiver performance in most cases In most cases the following basic rules will help you Connect an antenna with 50 Ohm impedance ...

Page 6: ...K SENSITIVITY 120 dBm 434MHz 12dB SINAD CCITT filter 117 dBm 868MHz 12dB SINAD CCITT filter SELECTIVITY 5 KHz at 6 dB point DEMODULATION FM narrow DISTORTION 5 at 1 KHz AF output S N RATIO 50 dB overall AF output DATA OUTPUT Digital output pulled up to Vcc 22 kohm OTHER OUTPUT RSSI AF 11 dBm typ at Fm 1kHz Fmod 3kHz 100kohm SUPPLY VOLTAGE 3 0 to 14V DC SUPPLY CURRENT 18 mA Typ I O TERMINALS Ant Gn...

Page 7: ... 1uF IF IC CN1 3 RSSI O The receiving level output The level indicate the strength of RF level RSSI IF IC 103 100K Pin CN1 4 CTRL I The power on off control terminal Lo active The voltage which Vcc 1 8V or lower voltage make the circuit active V oltage Regulator Pin Cont 10K 56K V cc CN1 5 VCC The power supply terminal Operates on 3 0 to 14V V oltage Regulator Pin V in 4 7u CN1 6 GND The ground Co...

Page 8: ... UHF Radio Data Module Operation Guide 8 BLOCK DIAGRAM 2 7V MIXER IF AMP SAW FILTER RF AMP BAND PASS FILTER ANT GND 2nd MIX IF AMP DEMOD VCO PLL REGULATOR Vcc CTRL RSSI XTAL FILTER BAND PASS FILTER DATA DETECT BUFFER DATA AFOUT GND ...

Page 9: ...03AS UHF Radio Data Module Operation Guide 9 DIMENSIONS 1 2 4 5 3 2 54 5 08 15 5 12 44 2 54 36 8 0 3 5 2 3 5 25 26 CN1 CN2 1 2 PIN CONECTION CN 1 3 RSSI 4 CTRL CN 2 1 A N T 2 G N D 0 64 2 7 1 4 3 6 5 V cc 1 D A TA 2 A F 6 G N D ...

Page 10: ...0 80 1 00 1 20 1 40 1 60 140 120 100 80 60 40 20 0 RF INPUT dBm RSSI V 0 00 0 20 0 40 0 60 0 80 1 00 1 20 1 40 1 60 140 120 100 80 60 40 20 0 RF INPUT dBm RSSI V 70 0 60 0 50 0 40 0 30 0 20 0 10 0 0 0 10 0 140 120 100 80 60 40 20 0 RF INPUT dBm RATIO dB S N D N 70 0 60 0 50 0 40 0 30 0 20 0 10 0 0 0 10 0 140 120 100 80 60 40 20 0 RF INPUT dBm RATIO dB S N D N ...

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