RFRXD0420-I/LQ Microchip Technology, RFRXD0420-I/LQ Datasheet
RFRXD0420-I/LQ
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RFRXD0420-I/LQR
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RFRXD0420-I/LQ Summary of contents
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... Home automation • Remote sensing Bi-CMOS Technology: • Wide operating voltage range • Low current consumption in Active and Standby modes - rfRXD0420 - 8.2 mA (typical, LNA High Gain mode) - <100 nA standby - rfRXD0920 - 9.2 mA (typical, LNA High Gain mode) - <100 nA standby • Wide temperature range: - Industrial: -40° ...
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... Wide supply voltage range • Low active current consumption • Very low standby current DS70090A-page 2 The rfRXD0420/0920 is a single conversion superhet- erodyne architecture. A block diagram is illustrated in Figure 1-1. The rfRXD0420/0920 consists of: • Low-noise amplifier (LNA) - Gain selectable • Mixer for down-conversion of the RF signal to the ...
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... FIGURE 1-1: rfRXD0420/0920 BLOCK DIAGRAM OPA DEM OUT 2IF DD V FBC2 FBC1 2IF 1IF OUT V DD 1IF- 1IF 1IF IN LNA OUT GAIN LNA V SS 2003 Microchip Technology Inc. rfRXD0420/0920 V SS MIXER2 DEM OUT+ DEM OUT XTAL DD V ENRX LF Preliminary DS70090A-page 3 ...
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... TABLE 1-1: rfRXD0420/0920 PINOUT I/O DESCRIPTION Pin Name Pin Number GAIN LNA 2 OUT LNA 3 IN 1IF 4 1IF+ 6 1IF- 7 OUT 1IF 9 IN 2IF 11 FBC1 12 FBC2 13 OUT 2IF 15 DEM IN 16 OPA 18 OPA- 19 OPA+ 20 RSSI 21 OUT DEM + 23 OUT DEM - 24 XTAL 26 ENRX LNA 31 DD ...
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... An external loop filter is connected to pin LF (Pin 29). The loop filter controls the dynamic behavior of the PLL, primarily lock time and spur levels. The applica- tion determines the loop filter requirements. The VCO gain for the rfRXD0420/0920 receivers are listed in Table 2-2. TABLE 2-2: PLL PARAMETERS (1) ...
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... Approximate LNA noise figures are listed in Table 2-3. TABLE 2-3: LNA NOISE FIGURES Device Noise Figure rfRXD0420 rfRXD0920 Note 1: Approximate value IN LNA (Pin 31) has an input impedance of approxi- mately 26 Ω single-ended. OUT LNA (Pin 3) has an open-collector output and is DD pulled via a tuned circuit. ...
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... RSSI pin effectively creating an RC filter with the internal 36 kΩ resistor. 2003 Microchip Technology Inc. rfRXD0420/0920 For FSK and FM demodulation, the RSSI represents the received signal strength of the incoming RF signal. The RSSI pin is illustrated in Figure 2-9. ...
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... FIGURE 2-11: BLOCK DIAGRAM OF DEMODULATOR OUTPTUT PINS Ω DEM OUT µ Ω DEM OUT µ 2.7 Operational Amplifier The internal operational amplifier (OPA) can be configured as a comparator for ASK or FSK filter for FM modulation applications. The Op Amp pins are illustrated in Figures 2-12 and 2-13 ...
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... Figure 3-2 illustrates the 2003 Microchip Technology Inc. rfRXD0420/0920 effect the trim capacitor has on the receive frequency for the rfRXD0420 at 433.92 MHz. Keep in mind that this graph represents one example circuit and the actual results depends on the crystal and PCB layout. FIGURE 3-2: purpose 434 ...
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... XTAL-HIGH 16 if rfRXD0420 _________ rfRXD0920 16 if rfRXD0420 _________ rfRXD0920 ) or low-side injection (f ) that corresponds to the LO frequency lo-HIGH lo-LOW Device LO Frequency Range 300 to 430 MHz 800 to 915 MHz (circle one) High-side Injection ...
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... Note: Refer to SAW filter manufacturer’s data sheet for pin outs and values for impedance matching components. 2003 Microchip Technology Inc. rfRXD0420/0920 The SAW filter has the added advantage of filtering wide-band noise and improving the signal-to-noise ratio (SNR) of the receiver. ...
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... LNA TUNED CIRCUIT The LNA OUT (Pin 3) has an open-collector output pulled via a tuned circuit also connected IN to 1IF (Pin 4) via a series decoupling capacitor. The input impedance is approximately 33 Ω || 1.5 pF. IN 1IF Important: To ensure LNA stability the V must be connected to a low impedance ground. ...
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... FIGURE 3-8: IF FILTER, LIMITING AMPLIFIER AND DEMODULATOR BLOCK DIAGRAM IN DEM 2IF OUT 2003 Microchip Technology Inc. rfRXD0420/0920 Preliminary DS70090A-page 13 ...
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... FIGURE 3-9: ASK APPLICATION CIRCUIT IN pF 1000 C13 FBC1 IN DS70090A-page 14 OPA DD V MIXER2 DEM 2IF OUT V DD FBC2 2IF V SS OUT 1IF DD V 1IF- 1IF 1IF IN OUT LNA GAIN LNA SS V Preliminary V SS OUT+ DEM OUT- DEM SS V XTAL V DD ...
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... OOK Signal Signal Period RSSI Signal 1τ to 2τ 2003 Microchip Technology Inc. rfRXD0420/0920 If the bit decision occurs near the end of the signal period, then the time constant should be set at less than or equal to the signal period. Figure 3-11 illustrates this method. ...
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... DYNAMIC REFERENCE VOLTAGE A dynamic reference voltage can be derived by averag- ing the received signal with a low-pass filter. The exam- ple ASK application circuit shown in Figure 3-9, the low-pass filter is formed by R1 and C2. The output of the low-pass filter is then fed to OPA-. ...
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... FIGURE 3-13: FSK APPLICATION CIRCUIT pF 1000 C13 2003 Microchip Technology Inc. rfRXD0420/0920 OPA DD V MIXER2 IN DEM 2IF OUT V DD FBC2 FBC1 IN 2IF SS V OUT 1IF DD V 1IF- 1IF 1IF IN OUT LNA LNA GAIN SS V Preliminary SS V DEM OUT+ DEM OUT- ...
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... Frequency Shift Keying (FSK) Figure 3-13 illustrates an example FSK application circuit. 3.3.1 IF FILTER CONSIDERATIONS As mentioned in the Section 3.1 above, IF filter band- width selection is a function of: • modulation (ASK, FSK or FM) • signal bandwidth • frequency and temperature tolerances of the ...
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... DEMout+ and DEMout- are high impedance outputs with only a 20 µA current capability. The capacitance on these pins limit the maximum data signal rate. The nominal output voltage of these pins is 1.23V. 2003 Microchip Technology Inc. rfRXD0420/0920 OUT + and Preliminary DS70090A-page 19 ...
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... FIGURE 3-16: FM APPLICATION CIRCUIT pF 1000 C13 DS70090A-page 20 OPA V DD MIXER2 DEM IN 2IF OUT V DD FBC2 FBC1 2IF 1IF OUT DD V 1IF- 1IF 1IF IN OUT LNA LNA GAIN V SS Preliminary V SS OUT+ DEM - OUT DEM V SS XTAL DD V ENRX LF 2003 Microchip Technology Inc. ...
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... FSK section above. 3.4.2 OPERATIONAL AMPLIFIER The internal operational amplifier is configured as an active low-pass filter. FM audio is typically de-emphasized recom- mended that de-emphasis circuitry be connected at the output of the operational amplifier rather than the output of the detector. 2003 Microchip Technology Inc. rfRXD0420/0920 Preliminary DS70090A-page 21 ...
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... ELECTRICAL CHARACTERISTICS Absolute Maximum Ratings Supply voltage...................................................................................................................................................0 to +7.0V Input voltage...........................................................................................................................................-0 Input RF level .........................................................................................................................................................10dBm Storage temperature .................................................................................................................................... -40 to +125C † NOTICE: Stresses above those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. This is a stress rating only and functional operation of the device at those or any other conditions above those indicated in the operation listings of this specification is not implied ...
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... DC Characteristics: rfRXD0420 (Industrial) DC CHARACTERISTICS Param Sym Characteristic No Supply Voltage STBY I Standby Current CC I Supply Current V OPA Op Amp input voltage offset OPA I Op Amp input current offset BIAS I Op Amp input bias current RSSI V RSSI voltage * These parameters are characterized but not tested. ...
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... DC Characteristics: rfRXD0920 (Industrial) DC CHARACTERISTICS Param Sym Characteristic No Supply Voltage STBY I Standby Current CC I Supply Current V OPA Op Amp input voltage offset OPA I Op Amp input current offset BIAS I Op Amp input bias current RSSI V RSSI voltage * These parameters are characterized but not tested. ...
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... For PICmicro device marking beyond this, certain price adders apply. Please check with your Microchip Sales Office. For QTP devices, any special marking adders are included in QTP price. 2003 Microchip Technology Inc. rfRXD0420/0920 Example rfRXD0420 02123ABC Preliminary DS70090A-page 25 ...
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... Package Details The following section gives the technical details of the package. 32-Lead Plastic Low Profile Quad Flat Package (LQ 1.4 mm Body Not available at this time. DS70090A-page 26 Preliminary 2003 Microchip Technology Inc. ...
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... Conferences for products, Development Systems, technical information and more • Listing of seminars and events 2003 Microchip Technology Inc. rfRXD0420/0920 SYSTEMS INFORMATION AND UPGRADE HOT LINE The Systems Information and Upgrade Line provides system users a listing of the latest versions of all of Microchip's development systems software products ...
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... Telephone: (_______) _________ - _________ Application (optional): Would you like a reply? Y Device: rfRXD0420/0920 Questions: 1. What are the best features of this document? 2. How does this document meet your hardware and software development needs you find the organization of this document easy to follow? If not, why? 4 ...
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... Please specify which device, revision of silicon and Data Sheet (include Literature #) you are using. New Customer Notification System Register on our web site (www.microchip.com/cn) to receive the most current information on our products. 2003 Microchip Technology Inc. rfRXD0420/0920 XXX Examples: a) Pattern rfRXD0420-I/LQ = Industrial temp, LQFP package b) rfRXD0920-I/LQ = Industrial temp, LQFP package Preliminary DS70090A-page29 ...
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... NOTES: DS70090A-page30 Preliminary 2003 Microchip Technology Inc. ...
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... ICSP, ICEPIC, microPort, Migratable Memory, MPASM, MPLIB, MPLINK, MPSIM, PICC, PICkit, PICDEM, PICDEM.net, PowerCal, PowerInfo, PowerTool, rfPIC, Select Mode, SmartSensor, SmartShunt, SmartTel and Total Endurance are trademarks of Microchip Technology Incorporated in the U.S.A. and other countries. Serialized Quick Turn Programming (SQTP service mark of Microchip Technology Incorporated in the U.S.A. ...
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... Korea Microchip Technology Korea 168-1, Youngbo Bldg. 3 Floor Samsung-Dong, Kangnam-Ku Seoul, Korea 135-882 Tel: 82-2-554-7200 Fax: 82-2-558-5934 Singapore Microchip Technology Singapore Pte Ltd. 200 Middle Road #07-02 Prime Centre Singapore, 188980 Tel: 65-6334-8870 Fax: 65-6334-8850 Taiwan Microchip Technology (Barbados) Inc., Taiwan Branch 11F-3, No ...