RFRXD0420T-I/LQ Microchip Technology, RFRXD0420T-I/LQ Datasheet

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RFRXD0420T-I/LQ

Manufacturer Part Number
RFRXD0420T-I/LQ
Description
IC RCVR 315/433MHZ ASK/FSK32LQFP
Manufacturer
Microchip Technology
Datasheet

Specifications of RFRXD0420T-I/LQ

Frequency
300MHz ~ 450MHz
Sensitivity
-106dBm
Data Rate - Maximum
80 kbps
Modulation Or Protocol
ASK, FM, FSK
Applications
Home Automation, Remote Sensing, RKE
Current - Receiving
9.2mA
Data Interface
PCB, Surface Mount
Antenna Connector
PCB, Surface Mount
Voltage - Supply
2.5 V ~ 5.5 V
Operating Temperature
-40°C ~ 85°C
Package / Case
32-LQFP
For Use With
DV164102 - KIT DEV RFPICKIT KIT 1
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Features
-
Memory Size
-
Features:
• Low cost single conversion superheterodyne
• Compatible with rfPIC™ and rfHCS series of RF
• Easy interface to PICmicro
• VCO phase locked to quartz crystal reference:
• Selectable LNA gain control for improved dynamic
• Selectable IF bandwidth via external ceramic IF
• Received Signal Strength Indicator (RSSI) for
• FSK/FM quadrature (phase coincidence) detector
• 32-Lead LQFP package
UHF ASK/FSK Receiver:
• Single frequency receiver set by crystal frequency
• Receive frequency range:
• Maximum data rate:
• IF frequency range: 455 kHz to 21.4 MHz
• RSSI range: 70 dB
• Frequency deviation range: ±5 kHz to ±120 kHz
• Maximum FM modulation frequency: 15 kHz
 2003 Microchip Technology Inc.
receiver architecture
transmitters
(MCU) and K
- Narrow receiver bandwidth
- Maximizes range and interference immunity
range
filter
signal strength indication (FSK, FM) and ASK
demodulation
demodulator
- ASK: 80 Kbps NRZ
- FSK: 40 Kbps NRZ
rfRXD0420
rfRXD0920
Device
EE
L
OQ
®
decoders
®
300 MHz to 450 MHz
800 MHz to 930 MHz
UHF ASK/FSK/FM Receiver
Frequency Range
microcontroller
rfRXD0420/0920
Preliminary
Pin Diagram:
Applications:
• Wireless remote command and control
• Wireless security systems
• Remote Keyless Entry (RKE)
• Low power telemetry
• Low power FM receiver
• Home automation
• Remote sensing
Bi-CMOS Technology:
• Wide operating voltage range
• Low current consumption in Active and Standby
• Wide temperature range:
LNA
LNA
modes
- rfRXD0420
- rfRXD0920
- Industrial: -40°C to +85°C
1IF
LQFP
1IF+
GAIN
V
V
V
1IF-
OUT
- 8.2 mA (typical, LNA High Gain mode)
- <100 nA standby
- 9.2 mA (typical, LNA High Gain mode)
- <100 nA standby
DD
SS
SS
IN
1
2
3
4
5
6
7
8
rfRXD0420
rfRXD0920
24
23
22
21
20
19
18
17
DS70090A-page 1
OPA
DEM
DEM
V
RSSI
OPA+
OPA-
V
SS
DD
OUT
OUT
-
+

Related parts for RFRXD0420T-I/LQ

RFRXD0420T-I/LQ Summary of contents

Page 1

... Maximum data rate: - ASK: 80 Kbps NRZ - FSK: 40 Kbps NRZ • IF frequency range: 455 kHz to 21.4 MHz • RSSI range • Frequency deviation range: ±5 kHz to ±120 kHz • Maximum FM modulation frequency: 15 kHz  2003 Microchip Technology Inc. rfRXD0420/0920 Pin Diagram: LQFP ...

Page 2

... IF signal in FSK and FM modulation applications • Operational amplifier (OPA) that can be config- ured as a comparator for ASK or FSK data decision filter for FM modulation. • Bias circuitry for bandgap biasing and circuit shutdown Preliminary  2003 Microchip Technology Inc. ...

Page 3

... 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 ...

Page 4

... Demodulator output (positive) O Analog Demodulator output (negative) I Analog Crystal oscillator input I CMOS Receiver enable input I Analog External loop filter connection. Common node of charge pump output and VCO tuning input. I Analog LNA input P Positive supply P Ground reference Preliminary Description  2003 Microchip Technology Inc. ...

Page 5

... µ  2003 Microchip Technology Inc. rfRXD0420/0920 The PLL consists of a phase-frequency detector, charge pump, voltage-controlled oscillator (VCO), and fixed divide-by-16 (rfRXD0420) (rfRXD0920) divider. The rfRXD0420/0920 employs a charge pump PLL that offers many advantages over the classical voltage phase detector PLL: infinite pull-in range and zero steady state phase error ...

Page 6

... BLOCK DIAGRAM OF MIXER1 PIN Ω 1IF Ω 500 µ BLOCK DIAGRAM OF MIXER1 BIAS PINS 1IF 500 µA 500 µ BLOCK DIAGRAM OF IF PREAMP PIN 6.8 kΩ 130 Ω OUT 230 µ pin (Pin 11). It also generates the  2003 Microchip Technology Inc. ...

Page 7

... Post detector filtering is easily implemented by connecting a capacitor to ground from the 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. ...

Page 8

... The Op Amp pins are illustrated in Figures 2-12 and 2-13. FIGURE 2-12: BLOCK DIAGRAM OF OP AMP INPUT PINS µA 50 Ω 50 Ω OPA FIGURE 2-13: BLOCK DIAGRAM OF OP AMP OUTPUT PIN Ω OPA DS70090A-page 8 20 µ µA SS OPA+ 20 Preliminary  2003 Microchip Technology Inc. ...

Page 9

... A trim capacitor can be used to trim the crystal on frequency within the limitations of the crystal’s trim sensitivity and pullability. 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 ...

Page 10

... MHz (circle one) High-side Injection ) for the Injection mode chosen: rf-image = ___________ + ( 2 x ___________ ) = ___________ - ( 2 x ___________ ) Preliminary PLL divide ratio XTAL ) = _______________ ) = _______________ and f : XTAL-LOW = _____________ = _____________ ) and circle XTAL Low-side Injection = ______________ = ______________  2003 Microchip Technology Inc. ...

Page 11

... C1 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. ...

Page 12

... Figure 3-8 shows component values C2 capacitors. 6.0 pF 6.0 pF 3.0 pF 3.0 pF Preliminary MIXER1 BIAS EXAMPLE CIRCUIT 470 Ω 470 Ω OUT (Pin 9) has an approximately IN (Pin 11) is approximately 2.2 kΩ and FBC2 (Pin 13). and connections for these  2003 Microchip Technology Inc. ...

Page 13

... 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 ...

Page 14

... 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 ENRX LF  2003 Microchip Technology Inc. ...

Page 15

... Signal Decision 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 ...

Page 16

... R1 and C2 such that the reference voltage is in the middle of the RSSI signal. This reference voltage level provides the optimum data comparison of the incoming data signal. 3.2.2.2 STATIC REFERENCE VOLTAGE A static reference voltage can be derived by a voltage divider network. Preliminary  2003 Microchip Technology Inc. ...

Page 17

... 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- ...

Page 18

... Q of the discriminator will be that the detector output will be smaller. FIGURE 3-15: CERAMIC DISCRIMINATOR OUT , Pin (Pin 16) input. Preliminary EXAMPLE CIRCUIT R1 4.7 kΩ 1.0 pF 3.3 µH C2 680 pF 16 require better frequency EXAMPLE CIRCUIT F1 CERAMIC DISCRIMINATOR C1 C3 1.0 pF 10- 680  2003 Microchip Technology Inc. ...

Page 19

... 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 ...

Page 20

... 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. ...

Page 21

... 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 ...

Page 22

... 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. Exposure to maximum rating conditions for extended periods may affect device reliability. DS70090A-page 22 Preliminary  2003 Microchip Technology Inc. CC +0.3V ...

Page 23

... Note 1: Dependant on ASK detector time constant bandwidth = 40 kHz, ∆f = +/- 15 kHz, BER < bandwidth = 150 kHz, ∆f = +/- 50 kHz, BER < bandwidth = 40 kHz, BER < bandwidth = 150 kHz, BER <  2003 Microchip Technology Inc. rfRXD0420/0920 Standard Operating Conditions (unless otherwise stated) Operating Temperature -40°C ≤ T † ...

Page 24

... MHz > 900 MHz rf nA ENRX = 0 GAIN mA LNA = 1 mA LNA GAIN = GAIN V LNA = 1 GAIN V LNA = 0 ≤ +85°C A Units Conditions ms ENRX = Note 1 dBm Note 2 dBm Note 3 dBm Note 4 dBm Note 5 dBm LNA GAIN = 1 GAIN dBm LNA = 1  2003 Microchip Technology Inc. ...

Page 25

... Standard PICmicro device marking consists of Microchip part number, year code, week code, and traceability code. 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 ...

Page 26

... 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. ...

Page 27

... Links to other useful web sites related to Microchip Products • 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 ...

Page 28

... What deletions from the document could be made without affecting the overall usefulness there any incorrect or misleading information (what and where)? 7. How would you improve this document? DS70090A-page 28 Total Pages Sent ________ FAX: (______) _________ - _________ N Literature Number: DS70090A Preliminary  2003 Microchip Technology Inc. ...

Page 29

... To order or obtain information, e.g., on pricing or delivery, refer to the factory or the listed sales office. PART NO. X /XX Device Temperature Package Range Device rfRXD0420-I/LQ UHF ASK/FSK/FM Receiver rfRXD0920-I/LQ UHF ASK/FSK/FM Receiver rfRXD0420T-I/LQ UHF ASK/FSK/FM Receiver (Tape & Reel) rfRXD0920T-I/LQ UHF ASK/FSK/FM Receiver (Tape & Reel) Temperature Range I = -40°C to +85°C Package LQ = LQFP32 ...

Page 30

... NOTES: DS70090A-page30 Preliminary  2003 Microchip Technology Inc. ...

Page 31

... 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. ...

Page 32

... 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 ...

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