EVB71120-868-FSK-C

EVB71120 300 to 930MHz Receiver Evaluation Board Description Features ! ! ! ! ! ! ! ! ! ! ! ! ! ! Dual RF input for antenna space and frequency diversity, LNA cascading or differential feeding Fully integrated PLL-based synthesizer 2nd mixer with image rejection Reception of ASK or FSK modulated signals Wide operating voltage and temperature ranges Very low standby current consumption Low operating current consumption External IF filters 455kHz or 10.7MHz Internal FSK demodulator Average or peak detection data slicer mode RSSI output with high dynamic range for RF level indication Output noise cancellation filter MCU clock output High over-all frequency accuracy Ordering Information Part No. (see paragraph 4) EVB71120-315-C EVB71120-433-C Note 1: Peak detection mode, IF2 selection = 10.7MHz is default population. Application Examples ! General digital and analog RF receivers at 300 to 930MHz ! Tire pressure monitoring systems (TPMS) ! Remote keyless entry (RKE) ! Low power telemetry systems ! Alarm and security systems ! Active RFID tags ! Remote controls ! Garage door openers ! Home and building automation Y R A IN IM L E R P EVB71120-868-C EVB71120-915-C General Description The MLX71120 is a multi-band, single-channel RF receiver based on a double-conversion super-heterodyne architecture. It can receive FSK and ASK modulated signals. The IC is designed for general purpose applications for example in the European bands at 433MHz and 868MHz or for similar applications in North America or Asia, e.g. at 315MHz or 915MHz. It is also well-suited for narrow-band applications according to the ARIB STD-T67 standard in the frequency range 426MHz to 470MHz. The receiver’s extended temperature and supply voltage ranges make the device a perfect fit for automotive or similar applications where harsh environmental conditions are expected. 39012 71120 01 Rev. 003 Page 1 of 18 EVB Description Jan/08 EVB71120 300 to 930MHz Receiver Evaluation Board Description Document Content 1 Theory of Operation ...................................................................................................3 1.1 1.2 1.3 1.4 1.5 1.6 1.7 1.8 1.9 General............................................................................................................................. 3 Technical Data Overview.................................................................................................. 3 Block Diagram .................................................................................................................. 4 Operating Modes .............................................................................................................. 5 Frequency Range ............................................................................................................. 5 LNA Selection................................................................................................................... 5 External IF2 Selection ...................................................................................................... 5 Demodulation Selection.................................................................................................... 5 Data Slicer ........................................................................................................................ 5 2 Frequency Planning ................................................................................................... 6 2.1 2.2 2.3 Calculation of Frequency Settings.................................................................................... 7 Standard Frequency Plans ............................................................................................... 8 433/868MHz Frequency Diversity .................................................................................... 8 3 Dual-Channel Application Circuits for FSK & ASK Reception ............................... 9 3.1 3.1.1 3.1.2 Peak Detector Data Slicer ................................................................................................ 9 Component Arrangement Top Side (Peak Detection Data Slicer, IF2 = 10.7MHz) .................. 10 Component Arrangement Top Side (Peak Detection Data Slicer, IF2 = 455kHz) .................... 11 3.2 3.2.1 Averaging Data Slicer Configured for-Bi Phase Codes .................................................. 12 Component Arrangement Top Side (Averaging Data Slicer, IF2 = 10.7MHz) .......................... 13 3.3 3.4 Component List for Dual-Channel Application................................................................ 14 PCB Layouts for Antenna Space Diversity ..................................................................... 15 4 5 Board Variants.......................................................................................................... 15 Package Description ................................................................................................ 16 5.1 Soldering Information ..................................................................................................... 16 Y R A IN IM L E R P 6 7 8 Reliability Information ............................................................................................. 17 ESD Precautions ...................................................................................................... 17 Disclaimer .................................................................................................................18 39012 71120 01 Rev. 003 Page 2 of 18 EVB Description Jan/08 EVB71120 300 to 930MHz Receiver Evaluation Board Description 1 1.1 Theory of Operation General The MLX71120 receiver architecture is based on a double-conversion super-heterodyne approach. The two LO signals are derived from an on-chip integer-N PLL frequency synthesizer. The PLL reference frequency is derived from a crystal (XTAL). As the first intermediate frequency (IF1) is very high, a reasonably high degree of image rejection is provided even without using an RF front-end filter. At applications asking for very high image rejections, cost-efficient RF front-end filtering can be realized by using a SAW filter in front of the LNA. The second mixer MIX2 is an image-reject mixer. The receiver signal chain is setup by one (or two) low noise amplifier(s) (LNA1, LNA2), two down-conversion mixers (MIX1, MIX2) and an external IF filter with an on-chip amplifier (IFA). By choosing the required modulation via an FSK/ASK switch (at pin MODSEL), either the on-chip FSK demodulator (FSK DEMOD) or the RSSI-based ASK detector is selected. A second order data filter (OA1) and a data slicer (OA2) follow the demodulator. The data slicer threshold can be generated from the mean-value of the data stream or by means of the positive and negative peak detectors (PKDET+/-). A digital post-processing of the sliced data signal can be performed by a noise filter (NF) building block. The dual LNA configuration can be used for antenna space diversity or antenna frequency diversity or to setup an LNA cascade (to further improve the input sensitivity). The two LNAs can also be setup to feed the RF signal differentially. A sequencer circuit (SEQ) controls the timing during start-up. This is to reduce start-up time and to minimize power dissipation. A clock output, which is a divide-by-8 version of the crystal oscillator signal, can be used to drive a microcontroller. The clock output is open drain and gets activated through a load connected to positive supply. 1.2 Technical Data Overview ! Input frequency ranges: 300 to 470MHz 610 to 930MHz ! Power supply range: 2.1 to 5.5V ! Temperature range: -40 to +125°C ! Shutdown current: 50 nA ! Operating current: 6.5 to 8.1mA ! Selectable IF2 frequency: 10.7MHz or 455kHz ! FSK deviation range: ±10kHz to ±100kHz (WB) ±2kHz to ±10kHz (NB) ! Input Sensitivity: at 4kbps NRZ, BER = 3·10-3 Frequency wide band 180kHz BW, IF2=10.7MHz Δf = ±20kHz narrow band 20kHz BW, IF2=455kHz Δf = ±5kHz wide band 180kHz BW, IF2=10.7MHz Y R A IN IM L E R P 315 MHz -109dBm -114dBm -113dBm 433 MHz -108dBm -112dBm -113dBm 868 MHz -106dBm -111dBm -111dBm ! Image rejection: 65dB 1st IF (with external RF front-end filter) 25dB 2nd IF (internal image rejection) ! Maximum data rate: 50kps RZ (bi-phase) code, 100kps NRZ ! Spurious emission: < -54dBm ! Linear RSSI range: > 70dB ! Crystal reference frequency: 16 to 27MHz ! MCU clock frequency: 2.0 to 3.4 915 MHz -104dBm -109dBm -109dBm FSK ASK Note: - Sensitivities given for RF input 1 (without SAW filter) - Sensitivity for RF input 2 is about 2 to 3dB worse (because of SAW filter loss) 39012 71120 01 Rev. 003 Page 3 of 18 EVB Description Jan/08 EVB71120 300 to 930MHz Receiver Evaluation Board Description 1.3 Block Diagram VCC IFSEL MODSEL LNAO2 MIXO MIXN VEE 2 LNAO1 MIXP VEE 9 10 11 12 14 17 100k 16 100k DF2 13 RSSI DF1 3 6 4 5 27 24 ASK OA1 SW1 100k 100k DFO 18 LNAI1 1 LNA1 MIX1 MIX2 IFA FSK LNASEL 32 PKDET+ 20 LNAI2 8 LO1 LO2 LNA2 N1 counter VCO BIAS ENRX FSK DEMOD PFD RO SW2 PDP VEE 7 100k PKDET_ PDN 21 RFSEL 31 SEQ N2 counter TEST 26 LF CP ROI DIV 8 SLCSEL CLKO VCC SLC OA2 NCF DTAO 29 CINT 22 19 23 30 25 28 15 Fig. 1: MLX71120 block diagram The MLX71120 receiver IC consists of the following building blocks: • • • • • • • • • • • • PLL synthesizer (PLL SYNTH) to generate the first and second local oscillator signals LO1 and LO2. The PLL SYNTH consists of a fully integrated voltage-controlled oscillator (VCO), a distributed feedback divider chain (N1, N2), a phase-frequency detector (PFD) a charge pump (CP), a loop filter (LF) and a crystal-based reference oscillator (RO). Two low-noise amplifiers (LNA) for high-sensitivity RF signal reception First mixer (MIX1) for down-conversion of the RF signal to the first IF (intermediate frequency) Second mixer (MIX2) with image rejection for down-conversion from the first to the second IF IF amplifier (IFA) to provide a high voltage gain and an RSSI signal output FSK demodulator (FSK DEMOD) Operational amplifiers OA1 and OA2 for low-pass filtering and data slicing, respectively Positive (PKDET+) and negative (PKDET-) peak detectors Switches SW1 to select between FSK and ASK as well as SW2 to chose between averaging or peak detection mode. Noise cancellation filter (NF) Sequencer circuit (SEQ) and biasing (BIAS) circuit Clock output (DIV8) Y R A IN IM L E R P 39012 71120 01 Rev. 003 Page 4 of 18 EVB Description Jan/08 EVB71120 300 to 930MHz Receiver Evaluation Board Description 1.4 Operating Modes ENRX 0 1 Note: ENRX is pulled down internally. Description Shutdown mode Receive mode 1.5 Frequency Range Two different receive frequency ranges can be selected by the control signal RFSEL. RFSEL 0 1 Description Input frequency range 300 to 470MHz Input frequency range 610 to 930MHz 1.6 LNA Selection LNASEL 0 Hi-Z 1 LNA1 shutdown, LNA2 active Note: Hi-Z state means pin LNASEL is left floating (pin is internally pulled to VCC/2 in this case). 1.7 External IF2 Selection IFSEL 0 1 Y R A IN IM L E R P LNA1 active, LNA2 shutdown LNA1 and LNA2 active Description IF2 = 455 kHz IF2 = 10.7 MHz Description ASK demodulation FSK demodulation Description 1.8 Demodulation Selection MODSEL 0 1 1.9 Data Slicer SLCSEL 0 1 Description Averaging detection mode Peak detection mode 39012 71120 01 Rev. 003 Page 5 of 18 EVB Description Jan/08 EVB71120 300 to 930MHz Receiver Evaluation Board Description 2 Frequency Planning Because of the double conversion architecture that employs two mixers and two IF signals, there are four different combinations for injecting the LO1 and LO2 signals: LO1 high side and LO2 high side: LO1 high side and LO2 low side: LO1 low side and LO2 high side: LO1 low side and LO2 low side: receiving at fRF(high-high) receiving at fRF(high-low) receiving at fRF(low-high) receiving at fRF(low-low) As a result, four different radio frequencies (RFs) could yield one and the same second IF (IF2). Fig. 2 shows this for the case of receiving at fRF(high-high). In the example of Fig. 2, the image signals at fRF(lowhigh) and fRF(low-low) are suppressed by the bandpass characteristic provided by the RF front-end. The bandpass shape can be achieved either with a SAW filter (featuring just a couple of MHz bandwidth), or by the tank circuits at the LNA input and output (this typically yields 30 to 60MHz bandwidth). In any case, the high value of the first IF (IF1) helps to suppress the image signals at fRF(low-high) and fRF(low-low). The two remaining signals at IF1 resulting from fRF(high-high) and fRF(high-low) are entering the second mixer MIX2. This mixer features image rejection with so-called single-sideband (SSB) selection. This means either the upper or lower sideband of IF1 can be selected. In the example of Fig. 2, LO2 high-side injection has been chosen to select the IF2 signal resulting from fRF(high-high). f RF Fig. 2: Y R A IN IM L E R P f LO2 f LO2 f RF f LO1 f RF f RF The four receiving frequencies in a double conversion superhet receiver It can be seen from the block diagram of Fig. 1 that there is a fixed relationship between the LO signal frequencies (fLO1 , fLO2) and the reference oscillator frequency fRO. f LO1 = N 1 ⋅ f LO2 f LO2 = N 2 ⋅ f RO The IF2 frequency can be selected to 455kHz or 10.7MHz via the logic level at the IFSEL control pin. At the same time the output impedance of the 2nd mixer at pin MIXO is set according to the IF2 (please refer to pin description for details). Of course, also the operating frequency of the FSK demodulator (FSK DEMOD) is set accordingly. 39012 71120 01 Rev. 003 Page 6 of 18 EVB Description Jan/08 EVB71120 300 to 930MHz Receiver Evaluation Board Description 2.1 Calculation of Frequency Settings The receiver has two predefined receive frequency plans which can be selected by the RFSEL control pin. Depending on the logic level of RFSEL pin the sideband selection of the second mixer and the counter settings for N1 and N2 are changed accordingly. (see in 1.5) RFSEL 0 1 Injection high-low low-high fRFmin [MHz] 300 610 fRFmax [MHz] 470 930 N1 4 2 N2 6 12 The following table shows the relationships of several internal receiver frequencies for the two input frequency ranges. fRF [MHz] 300 to 470 fIF1 fLO1 fLO2 fRO f RF + N 1f IF2 N1 − 1 N 1 (f RF + f IF2 ) N1 − 1 f RF + f IF2 N1 − 1 f RF + f IF2 N 2 (N 1 − 1) 610 to 930 f RF − N 1f IF2 N1 + 1 Given IF2 is selectable at either 455kHz or 10.7MHz and the corresponding N1, N2 counter settings, above equations can be transferred into the following table. IF2=455kHz fRF [MHz] 300 to 470 f RF + 1.82MHz 3 f RF − 0.91MHz 3 610 to 930 IF2=10.7MHz fRF [MHz] 300 to 470 Y R A IN IM L E R P fIF1 fLO1 fLO2 fRO N 1 (f RF + f IF2 ) N1 + 1 f RF + f IF2 N1 + 1 f RF + f IF2 N 2 (N 1 + 1) 4(f RF + 0.455MHz ) 3 2(f RF + 0.455MHz ) 3 f RF + 0.455MHz 3 f RF + 0.455MHz 18 f RF + 0.455MHz 36 fIF1 fLO1 fLO2 fRO f RF + 42.8MHz 3 f RF − 21.4MHz 3 4(f RF + 10.7MHz ) 3 2(f RF + 10.7MHz ) 3 610 to 930 f RF + 10.7MHz 3 f RF + 10.7MHz 18 f RF + 10.7MHz 36 39012 71120 01 Rev. 003 Page 7 of 18 EVB Description Jan/08 EVB71120 300 to 930MHz Receiver Evaluation Board Description 2.2 Standard Frequency Plans IF2 = 455kHz fRF [MHz] 315 433.92 868.3 915 fIF1 [MHz] 105.6067 145.2467 289.1300 304.6967 fLO1 [MHz] 420.6067 579.1667 579.1700 610.3033 fLO2 [MHz] 105.1517 144.7917 289.5850 305.1517 fRO [MHz] 17.525277 24.131944 24.132083 25.429305 IF2 = 10.7MHz fRF [MHz] 315 433.92 868.3 915 fIF1 [MHz] 119.2667 158.0667 282.3000 297.8667 fLO1 [MHz] 434.2667 592.8267 586.0000 617.1333 fLO2 [MHz] 108.5667 148.2067 293.0000 308.5667 fRO [MHz] 18.094444 24.701111 24.416666 25.713888 2.3 433/868MHz Frequency Diversity The receiver’s multi-band functionality can be used to operate at two different frequency bands just by changing the logic level at pin RFSEL and without changing the crystal. This feature is applicable for common use of the 433 and 868MHz bands. Below table shows the corresponding frequency plans. IF2 = 455kHz RFSEL 0 1 fRF [MHz] 433.9225 868.3 Y R A IN IM L E R P fIF1 [MHz] fLO1 [MHz] 579.17 fLO2 [MHz] 144.7925 145.2483 289.1300 579.17 289.5850 fRO [MHz] 24.132083 39012 71120 01 Rev. 003 Page 8 of 18 EVB Description Jan/08 EVB71120 300 to 930MHz Receiver Evaluation Board Description 3 3.1 Dual-Channel Application Circuits for FSK & ASK Reception Peak Detector Data Slicer jumpers LNA1 LNA2 123 VCC ENRX 123 DTAO CLKO ROI RSSI 12 34 56 78 CRO RCL RFSEL 10.7MHz 455kHz XTAL 0 Ω jumper pads CX RFSEL 31 32 IFSEL 27 TEST 26 ENRX 30 DTAO 29 CLKO 28 ROI 25 50 L1 L2 VCC C3 1 LNAI1 2 VEE CRS CB3 L3 C7 Y R A IN IM L E R P CINT 23 VCC 22 RSSI 24 CF3 C4 C5 3 LNAO1 4 MIXP 5 MIXN MLX71120 32L QFN 5x5 PDN 21 PDP 20 SLC 19 CP2 CB2 C6 6 LNAO2 7 VEE 8 CP1 VCC MODSEL DFO 18 DF2 1 3 SAWFIL 4 6 MIXO IFAN IFAP VCC L4 VEE LNAI2 SLCSEL CB0 12 DF1 17 CF1 C8 9 10 11 12 13 14 15 16 VCC GND DFO 50 SCLSEL 34 CIF CF2 CB1 CERFIL ASK jumpers FSK 567 Fig. 3: Circuit schematic 39012 71120 01 Rev. 003 Page 9 of 18 EVB Description Jan/08 EVB71120 300 to 930MHz Receiver Evaluation Board Description 3.1.1 Component Arrangement Top Side (Peak Detection Data Slicer, IF2 = 10.7MHz) Y R A IN IM L E R P Fig. 4: PCB top-side view 39012 71120 01 Rev. 003 Page 10 of 18 EVB Description Jan/08 EVB71120 300 to 930MHz Receiver Evaluation Board Description 3.1.2 Component Arrangement Top Side (Peak Detection Data Slicer, IF2 = 455kHz) Y R A IN IM L E R P Fig. 5: PCB top-side view 39012 71120 01 Rev. 003 Page 11 of 18 EVB Description Jan/08 EVB71120 300 to 930MHz Receiver Evaluation Board Description 3.2 Averaging Data Slicer Configured for Bi-Phase Codes jumpers LNA1 LNA2 123 VCC ENRX 123 DTAO CLKO ROI RSSI 12 34 56 78 CRO RCL RFSEL 10.7MHz 455kHz XTAL 0 Ω jumper pads CX RFSEL 31 32 ENRX 30 DTAO 29 CLKO 28 IFSEL 27 TEST 26 ROI 25 50 L1 L2 VCC C3 1 LNAI1 2 VEE CRS RSSI 24 CINT 23 VCC 22 CB3 L3 C7 Y R A IN IM L E R P CF3 C4 C5 3 LNAO1 4 MIXP 5 MIXN MLX71120 32L QFN 5x5 PDN 21 PDP 20 SLC 19 CB2 C6 CSL 6 LNAO2 7 VEE 8 VCC MODSEL DFO 18 DF2 1 3 SAWFIL 4 6 MIXO IFAN IFAP VCC L4 VEE LNAI2 SLCSEL DF1 17 CF1 CB0 12 C8 9 10 11 12 13 14 15 16 VCC GND DFO 50 SCLSEL 34 CIF CF2 CB1 CERFIL ASK jumpers FSK 567 Fig. 6: Circuit schematic 39012 71120 01 Rev. 003 Page 12 of 18 EVB Description Jan/08 EVB71120 300 to 930MHz Receiver Evaluation Board Description 3.2.1 Component Arrangement Top Side (Averaging Data Slicer, IF2 = 10.7MHz) Y R A IN IM L E R P Fig. 7: PCB top-side view 39012 71120 01 Rev. 003 Page 13 of 18 EVB Description Jan/08 EVB71120 300 to 930MHz Receiver Evaluation Board Description 3.3 Component List for Dual-Channel Application Value @ 315 MHz 100 pF 4.7 pF 100 pF 100 pF NIP NIP 33 nF 330 pF 330 pF 330 pF 680 pF 330 pF Below table is valid for test circuits shown in Figures 3.1 to 3.2. Part C3 C4 C5 C6 C7 C8 CB0 CB1 CB2 CB3 CF1 CF2 CF3 CIF CP1 CP2 CRS CRO CSL CX L1 L2 L3 L4 RCL SAW FIL CER FIL Size 0603 0603 0603 0603 0603 0603 0805 0603 0603 0603 0603 0603 0603 0603 0603 0603 0603 0603 0603 0603 0603 0603 0603 0603 0603 SMD 3x3 SMD 3.45x3.1 SMD 6.5x6.0 Value @ Value @ 433.92 MHz 868.3 MHz 100 pF 3.9 pF 100 pF 100 pF NIP NIP 33 nF 330 pF 330 pF 330 pF 680 pF 330 pF 100 pF 2.2 pF 100 pF 100 pF 3.9 pF 1.0 pF 33 nF 330 pF 330 pF 330 pF 680 pF 330 pF Value @ 915 MHz 100 pF 1.5 pF 100 pF 100 pF NIP NIP 33 nF 330 pF 330 pF 330 pF 680 pF 330 pF Tol. ±5% ±5% ±5% ±5% ±5% ±5% Description LNA input filtering capacitor LNA output tank capacitor MIX1 positive input matching capacitor MIX1 negative input matching capacitor matching capacitor matching capacitor ±10% decoupling capacitor ±10% decoupling capacitor ±10% decoupling capacitor ±10% decoupling capacitor ±10% ±10% ±10% data low-pass filter capacitor, for data rate of 4 kbps NRZ data low-pass filter capacitor, for data rate of 4 kbps NRZ optional capacitor for noise cancellation filter positive PKDET capacitor, for data rate of 4 kbps NRZ negative PKDET capacitor, for data rate of 4 kbps NRZ value according to the data rate connected to ground if noise filter not used 1 nF 1 nF 1 nF 1 nF 33 nF 33 nF 1 nF 1 nF 100 nF 27 pF 56 nH 27 nH 0Ω 56 nH 3.3 kΩ Y R A IN IM L E R P 33 nF 33 nF 33 nF ±10% ±10% 33 nF 1 nF 33 nF 1 nF 33 nF 1 nF ±10% ±5% 1 nF 1 nF 1 nF optional capacitor, to couple external RO signal data slicer capacitor, for data rate of 4 kbps NRZ crystal series capacitor matching inductor 100 nF 27 pF 100 nF 27 pF 0Ω 100 nF 27 pF 0Ω for averaging detection mode only 27 nH 15 nH 82 nH ±10% ±5% ±5% ±5% ±5% 3.9 nH 22 nH 22 nH 3.9 nH 0Ω 0Ω LNA output tank inductor matching inductor matching inductor 68 nH ±5% 3.3 kΩ 3.3 kΩ 3.3 kΩ ±5% SAFCC433M BL0X00 (433.92 MHz) SAFCC868M SL0X00 (868.3 MHz) SAFCC915M AL0N00 (915 MHz) low-loss SAW filter from Murata or equivalent part SFECF10M7HA00 B3dB = 180 kHz CFUKG455KD4A B6dB = 20 kHz 24.701111 MHz 24.416667 MHz 25.713889 MHz 25.429306 MHz 24.132083 MHz ±20ppm cal., ±30ppm temp. ±10% IFA feedback capacitor RSSI output low pass capacitor, for data rate of 4 kbps NRZ optional CLK output resistor, to clock output signal generated SAFDC315M SM0T00 (315 MHz) IF2=10.7MHz ceramic filter from Murata, or equivalent part IF2=455kHz IF2=10.7MHz fundamental-mode crystal from Telcona, IF2=455kHz or equivalent part 18.094444 MHz XTAL SMD 5x3.2 17.525278 MHz Note: NIP – not in place, may be used optionally 39012 71120 01 Rev. 003 Page 14 of 18 EVB Description Jan/08 EVB71120 300 to 930MHz Receiver Evaluation Board Description 3.4 PCB Layouts for Antenna Space Diversity • Board layout data in Gerber format is available, board size is 40mm x 44.5mm. MOD SEL GND GND VCC ASK DFO PCB top view 4 Board Variants Type EVB71120 Frequency/MHz –315 –433 –868 –915 Y R A IN IM L E R P RFI2 RFI1 FSK Note: 39012 71120 01 Rev. 003 Melexis DTAO GND GND RSSI GND ROI GND CLKO GND VCC ENRX LNA2 LNA SEL LNA1 PCB bottom view Modulation Board Execution antenna version connector version –FSK –ASK –FM according to section 3.1 / 3.2 according to section 3.1 / 3.2 –A –C available EVB setups Page 15 of 18 EVB Description Jan/08 EVB71120 300 to 930MHz Receiver Evaluation Board Description 5 Package Description The device MLX71120 is RoHS compliant. D 24 25 17 A3 16 E 32 9 8 b A1 A 1 e Y R A IN IM L E R P exp osed pad E2 L D2 The “exposed pad” is not connected to internal ground, it should not be connected to the PCB. Fig. 8: 32L QFN 5x5 Quad all Dimension in mm D min max min max 4.75 5.25 0.187 0.207 E 4.75 5.25 0.187 0.207 D2 3.00 3.25 0.118 0.128 E2 3.00 3.25 0.118 0.128 A 0.80 1.00 0.0315 0.0393 A1 0 0.05 0 0.002 A3 0.20 L 0.3 0.5 0.0118 0.0197 e 0.50 b 0.18 0.30 0.0071 0.0118 all Dimension in inch 0.0079 0.0197 5.1 Soldering Information • The device MLX71120 is qualified for MSL3 with soldering peak temperature 260 deg C according to JEDEC J-STD-20 39012 71120 01 Rev. 003 Page 16 of 18 EVB Description Jan/08 EVB71120 300 to 930MHz Receiver Evaluation Board Description 6 Reliability Information This Melexis device is classified and qualified regarding soldering technology, solderability and moisture sensitivity level, as defined in this specification, according to following test methods: Reflow Soldering SMD’s (Surface Mount Devices) • • IPC/JEDEC J-STD-020 “Moisture/Reflow Sensitivity Classification for Nonhermetic Solid State Surface Mount Devices (classification reflow profiles according to table 5-2)” EIA/JEDEC JESD22-A113 “Preconditioning of Nonhermetic Surface Mount Devices Prior to Reliability Testing (reflow profiles according to table 2)” Wave Soldering SMD’s (Surface Mount Devices) and THD’s (Through Hole Devices) • • EN60749-20 “Resistance of plastic- encapsulated SMD’s to combined effect of moisture and soldering heat” EIA/JEDEC JESD22-B106 and EN60749-15 “Resistance to soldering temperature for through-hole mounted devices” Iron Soldering THD’s (Through Hole Devices) • EN60749-15 “Resistance to soldering temperature for through-hole mounted devices” Solderability SMD’s (Surface Mount Devices) and THD’s (Through Hole Devices) • EIA/JEDEC JESD22-B102 and EN60749-21 “Solderability” For all soldering technologies deviating from above mentioned standard conditions (regarding peak temperature, temperature gradient, temperature profile etc) additional classification and qualification tests have to be agreed upon with Melexis. The application of Wave Soldering for SMD’s is allowed only after consulting Melexis regarding assurance of adhesive strength between device and board. Melexis is contributing to global environmental conservation by promoting lead free solutions. For more information on qualification of RoHS compliant products (RoHS = European directive on the Restriction Of the Use of Certain Hazardous Substances) please visit the quality page on our website: http://www.melexis.com/quality_leadfree.aspx Y R A IN IM L E R P 7 ESD Precautions Electronic semiconductor products are sensitive to Electro Static Discharge (ESD). Always observe Electro Static Discharge control procedures whenever handling semiconductor products. 39012 71120 01 Rev. 003 Page 17 of 18 EVB Description Jan/08 EVB71120 300 to 930MHz Receiver Evaluation Board Description 8 Disclaimer 1) The information included in this documentation is subject to Melexis intellectual and other property rights. Reproduction of information is permissible only if the information will not be altered and is accompanied by all associated conditions, limitations and notices. 2) Any use of the documentation without the prior written consent of Melexis other than the one set forth in clause 1 is an unfair and deceptive business practice. Melexis is not responsible or liable for such altered documentation. 3) The information furnished by Melexis in this documentation is provided ’as is’. Except as expressly warranted in any other applicable license agreement, Melexis disclaims all warranties either express, implied, statutory or otherwise including but not limited to the merchantability, fitness for a particular purpose, title and non-infringement with regard to the content of this documentation. 4) Notwithstanding the fact that Melexis endeavors to take care of the concept and content of this documentation, it may include technical or factual inaccuracies or typographical errors. Melexis disclaims any responsibility in connection herewith. 5) Melexis reserves the right to change the documentation, the specifications and prices at any time and without notice. Therefore, prior to designing this product into a system, it is necessary to check with Melexis for current information. 6) Melexis shall not be liable to recipient or any third party for any damages, including but not limited to personal injury, property damage, loss of profits, loss of use, interrupt of business or indirect, special incidental or consequential damages, of any kind, in connection with or arising out of the furnishing, performance or use of the information in this documentation. 7) The product described in this documentation is intended for use in normal commercial applications. Applications requiring operation beyond ranges specified in this documentation, unusual environmental requirements, or high reliability applications, such as military, medical life-support or life-sustaining equipment are specifically not recommended without additional processing by Melexis for each application. 8) Any supply of products by Melexis will be governed by the Melexis Terms of Sale, published on www.melexis.com. © Melexis NV. All rights reserved. Y R A IN IM L E R P For the latest version of this document, go to our website at: www.melexis.com Or for additional information contact Melexis Direct: Europe, Africa: Phone: +32 1367 0495 E-mail: sales_europe@melexis.com Americas: Phone: +1 603 223 2362 E-mail: sales_usa@melexis.com Asia: Phone: +32 1367 0495 E-mail: sales_asia@melexis.com ISO/TS 16949 and ISO14001 Certified 39012 71120 01 Rev. 003 Page 18 of 18 EVB Description Jan/08