PDF RX6001 Data sheet ( Hoja de datos )

Número de pieza	RX6001
Descripción	868.35 MHz Hybrid Receiver
Fabricantes	RF Monolithics
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No Preview Available ! ® RX6001 • Designed for Short-Range Wireless Control and Data Communications • Supports RF Data Transmission Rates Up to 115.2 kbps • 3 V, Low Current Operation plus Sleep Mode 868.35 MHz • Stable, Easy to Use, Low External Parts Count • Complies with Directive 2002/95/EC (RoHS) Hybrid Receiver The RX6001 hybrid receiver is ideal for short-range wireless control and data applications where robust op- eration, small size, low power consumption and low cost are required. The RX6001 employs RFM’s amplifier- sequenced hybrid (ASH) architecture to achieve this unique blend of characteristics. All critical RF functions are contained in the hybrid, simplifying and speeding design-in. The RX6001 is sensitive and stable. A wide mdynamic range log detector, in combination with digital AGC and a compound data slicer, provide robust per- formance in the presence of on-channel interference or noise. Two stages of SAW filtering provide excellent oreceiver out- of-band rejection. The RX6001 generates virtually no RF emissions, facilitating compliance with ETSI 300 220 and similar regulations. .cRating UPower Supply and All Input/Output Pins t4Non-Operating Case Temperature Soldering Temperature (10 seconds / 5 cycles max.) Value -0.3 to +4.0 -50 to +100 260 Units V °C °C SM-20H Case eeElectrical Characteristics hCharacteristic Operating Frequency SModulation Types taData Rate Receiver Performance, High Sensitivity Mode aSensitivity, 2.4 kbps, 10-3 BER, AM Test Method Sensitivity, 2.4 kbps, 10-3 BER, Pulse Test Method .DCurrent, 2.4 kbps (RPR = 330 K) Sensitivity, 19.2 kbps, 10-3 BER, AM Test Method wSensitivity, 19.2 kbps, 10-3 BER, Pulse Test Method Current, 19.2 kbps (RPR = 330 K) wSensitivity, 115.2 kbps, 10-3 BER, AM Test Method w omSensitivity, 115.2 kbps, 10-3 BER, Pulse Test Method .cCurrent, 115.2 kbps UReceiver Performance, Low Current Mode t4Sensitivity, 2.4 kbps, 10-3 BER, AM Test Method eeSensitivity, 2.4 kbps, 10-3 BER, Pulse Test Method hCurrent, 2.4 kbps (RPR = 1100 K) Sym fo Notes Minimum 868.15 Typical OOK & ASK Maximum 868.55 Units MHz 115.2 kbps 1 -106 dBm 1 -100 dBm 2 3.0 mA 1 -101 dBm 1 -95 dBm 2 3.1 mA 1 -97 dBm 1 -91 dBm 3.8 mA 1 -104 dBm 1 -98 dBm 2 1.8 mA ww.DataSRF Monolithics, Inc. Phone: (972) 233-2903 wRFM Europe Phone: 44 1963 251383 Fax: (972) 387-8148 Fax: 44 1963 251510 E-mail: [email protected] http://www.rfm.com Page 1 of 10 ©1999 by RF Monolithics, Inc. The stylized RFM logo are registered trademarks of RF Monolithics, Inc. RX6001-062905 1 page Antenna RFIO 20 ESD Choke SAW CR Filter RX6000 Series ASH Receiver Block Diagram CN TRL1 CN TRL0 17 18 Bias Control Power Down Control Log VCC1: Pin 2 VCC2: Pin 16 GND1: Pin 1 GND2: Pin 10 GND3: Pin 19 NC: Pin 8 RREF: Pin 11 CMPIN: Pin 6 RFA1 SAW Delay Line AGC Set Gain Select RFA2 Detector Low-Pass Filter LPFADJ 9 R LPF BB Pulse Generator & RF Amp Bias PRATE 14 15 PWIDTH R PR R PW AGC Control AGCCAP 3 C AGC AGC Reset BBOUT Peak Ref 56 C BBO Detector PKDET 4 C PKD DS2 dB Below Peak Thld AND 7 RXDATA AGC DS1 Ref Thld Threshold Control THLD1 13 R TH1 11 12 R TH2 R REF THLD2 Figure 2 RX6000 Series ASH Receiver Block Diagram Figure 2 is the general block diagram of the RX6000 series ASH receiver. Please refer to Figure 2 for the following discussions. Antenna Port The only external RF components needed for the receiver are the antenna and its matching components. Antennas presenting an impedance in the range of 35 to 72 ohms resistive can be satisfactorily matched to the RFIO pin with a series matching coil and a shunt matching/ESD protection coil. Other antenna impedances can be matched using two or three compo- nents. For some impedances, two inductors and a capacitor will be re- quired. A DC path from RFIO to ground is required for ESD protection. Receiver Chain The output of the SAW filter drives amplifier RFA1. This amplifier includes provisions for detecting the onset of saturation (AGC Set), and for switching between 35 dB of gain and 5 dB of gain (Gain Select). AGC Set is an input to the AGC Control function, and Gain Select is the AGC Control function output. ON/OFF control to RFA1 (and RFA2) is generated by the Pulse Generator & RF Amp Bias function. The output of RFA1 drives the SAW delay line, which has a nominal delay of 0.5 µs. The second amplifier, RFA2, provides 51 dB of gain below saturation. The output of RFA2 drives a full-wave detector with 19 dB of threshold gain. The onset of saturation in each section of RFA2 is detected and summed to pro- vide a logarithmic response. This is added to the output of the full-wave de- tector to produce an overall detector response that is square law for low signal levels, and transitions into a log response for high signal levels. This combination provides excellent threshold sensitivity and more than 70 dB of detector dynamic range. In combination with the 30 dB of AGC range in RFA1, more than 100 dB of receiver dynamic range is achieved. The detector output drives a gyrator filter. The filter provides a three-pole, 0.05 degree equiripple low-pass response with excellent group delay flat- ness and minimal pulse ringing. The 3 dB bandwidth of the filter can be set from 4.5 kHz to 1.8 MHz with an external resistor. The filter is followed by a base-band amplifier which boosts the detected signal to the BBOUT pin. When the receiver RF amplifiers are operating at a 50%-50% duty cycle, the BBOUT signal changes about 10 mV/dB, with a peak-to-peak signal level of up to 685 mV. For lower duty cycles, the mV/ dB slope and peak-to-peak signal level are proportionately less. The de- tected signal is riding on a 1.1 Vdc level that varies somewhat with supply voltage, temperature, etc. BBOUT is coupled to the CMPIN pin or to an ex- ternal data recovery process (DSP, etc.) by a series capacitor. The correct value of the series capacitor depends on data rate, data run length, and other factors as discussed in the ASH Transceiver Designer’s Guide. When an external data recovery process is used with AGC, BBOUT must be coupled to the external data recovery process and CMPIN by separate series coupling capacitors. The AGC reset function is driven by the signal applied to CMPIN. When the receiver is placed in the power-down (sleep) mode, the output impedance of BBOUT becomes very high. This feature helps preserve the charge on the coupling capacitor to minimize data slicer stabilization time when the receiver switches out of the sleep mode. Data Slicers The CMPIN pin drives two data slicers, which convert the analog signal from BBOUT back into a digital stream. The best data slicer choice de- pends on the system operating parameters. Data slicer DS1 is a capacitive- ly-coupled comparator with provisions for an adjustable threshold. DS1 provides the best performance at low signal-to-noise conditions. The RF Monolithics, Inc. Phone: (972) 233-2903 Fax: (972) 387-8148 RFM Europe Phone: 44 1963 251383 Fax: 44 1963 251510 ©1999 by RF Monolithics, Inc. The stylized RFM logo are registered trademarks of RF Monolithics, Inc. E-mail: [email protected] http://www.rfm.com RX6001-062905 Page 5 of 10 5 Page

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