TH71101 315/433MHz FSK/FM/ASK Receiver Features ! ! ! ! ! ! ! Single superhet architecture for low external component count FSK for digital data and FM reception for analog signal transmission FM/FSK demodulation with phase-coincidence demodulator Low current consumption in active mode and very low standby current Switchable LNA gain for improved dynamic range RSSI allows signal strength indication and ASK detection Surface mount package LQFP32 Ordering Information Part No. Temperature Range Package TH71101 -40 °C to 85°C LQFP32 Application Examples ! ! ! ! ! General digital and analog 315 MHz or 433 MHz ISM band usage Low-power telemetry Alarm and security systems Keyless car and central locking Pagers Technical Data Overview ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! Input frequency range: 300 MHz to 450 MHz Power supply range: 2.5 V to 5.5 V at 315 MHz and 2.7 V to 5.5 V at 433 MHz Temperature range: -40 °C to +85 °C Operating current: 6.5 mA at low gain and 8.2 mA at high gain mode Standby current: < 100 nA 1) with 40 kHz IF filter BW (incl. SAW front-end filter loss) Sensitivity: -111 dBm 2) Sensitivity: -104 dBm with 150 kHz IF filter BW (incl. SAW front-end filter loss) Range of IF: 455 kHz to 21.4 MHz Maximum input level: –10 dBm at ASK and 0 dBm at FSK Image rejection: > 55 dB (e.g. with SAW front-end filter and at 10.7 MHz IF) Spurious emission: < -70 dBm Input frequency acceptance: ±50 kHz (with AFC option) RSSI range: 70 dB Frequency deviation range: ±5 kHz to ±120 kHz Maximum data rate: 80 kbit/s NRZ Maximum analog modulation frequency: 15 kHz 1) 2) at ± 8 kHz FSK deviation, BER = 3⋅10 and phase-coincidence demodulation -3 at ± 50 kHz FSK deviation, BER = 3⋅10 and phase-coincidence demodulation TH71101 Data Sheet 3901071101 -3 Page 1 of 20 Nov. 2001 Rev. 005 TH71101 315/433MHz FSK/FM/ASK Receiver General Description The TH71101 receiver IC consists of the following building blocks " " " " " " " " " PLL synthesizer (PLL SYNTH) for generation of the local oscillator signal LO Parts of the PLL SYNTH are the high-frequency VCO1, the feedback divider DIV_16, a phase-frequency detector (PFD) with charge pump (CP) and a crystal-based reference oscillator (RO) Low-noise amplifier (LNA) for high-sensitivity RF signal reception First mixer (MIX1) for down-conversion of the RF signal to the IF IF pre amplifier which is a mixer cell (MIX2) that operates as an amplifier IF amplifier (IFA) to amplify and limit the IF signal and for RSSI generation Phase coincidence demodulator (DEMOD) with third mixer (MIX3) to demodulate the IF signal Operational amplifier (OA) for data slicing, filtering and ASK detection Bias circuitry for bandgap biasing and circuit shutdown With the TH71101 receiver chip, various circuit configurations can be arranged in order to meet a number of different customer requirements. For FM/FSK reception the IF tank used in the phase coincidence demodulator can be constituted either by a ceramic resonator or an LC tank (optionally with a varactor diode to create an AFC circuit). In ASK configuration, the RSSI signal is feed to an ASK detector, which is constituted by the operational amplifier. Demodulation Type of receiver FM / FSK narrow-band RX with ceramic demodulation tank FM / FSK wide-band RX with LC demodulation tank ASK RX with RSSI-based demodulation A double-conversion variant, called TH71102, is also available. This receiver IC allows a higher degree of image rejection, achieved in conjunction with an RF frontend filter. Both RXICs have the same die. At the TH71102, the second mixer (MIX2) is used to down-convert the first IF (IF1) to the second IF (IF2). At the TH71101, MIX2 operates as an amplifier. Efficient RF frontend filtering is realized by using a SAW, ceramic or helix filter in front of the LNA and by adding an LC filter at the LNA output. TH71101 Data Sheet 3901071101 Page 2 of 20 Nov. 2001 Rev. 005 TH71101 315/433MHz FSK/FM/ASK Receiver 18 OUT_OA 19 20 OA OAN OAP 24 23 OUTN OUTP Block Diagram 17 VCC_BIAS BIAS ENRX 28 16 MIX3 IN_DEM 22 VEE_BIAS 15 OUT_IFA 27 14 VCC_PLL VEE_RO 26 13 FPC2 RO RO IFA 21 25 RSSI 12 FBC1 11 PFD IN_IFA 8 MIX2 29 VCC_MIX DIV_16 9 CP IF OUT_MIX2 LF 10 VEE_IF IF 7 IF1N VCO1 MIX1 5 VEE_MIX LO 6 IF1P 4 IN_MIX1 VEE_LNA GAIN_LNA VCC_LNA 32 LNA 31 1 VEE_LNAC IN_LNA 2 30 3 OUT_LNA Fig. 1: TH71101 block diagram TH71101 Data Sheet 3901071101 Page 3 of 20 Nov. 2001 Rev. 005 TH71101 315/433MHz FSK/FM/ASK Receiver Frequency Planning Frequency planning is straightforward for single-conversion applications because there is only one IF that might be chosen, and then the only possible choice is low-side or high-side injection of the LO signal (which is now the one and only LO signal in the receiver). The receiver’s single-conversion architecture requires careful frequency planning. Besides the desired RF input signal, there are a number of spurious signals that may cause an undesired response at the output. Among them is the image of the RF signal that must be suppressed by the RF front-end filter. By using the internal PLL synthesizer of the TH71101 with the fixed feedback divider ratio of N = 16 (DIV_16), two types of down-conversion are possible: low-side injection of LO and high-side injection of LO. The following table summarizes some equations that are useful to calculate the crystal reference frequency (REF), the IF and the LO frequency respectively, for a given RF. Injection type low high REF (RF – IF)/16 (RF + IF)/16 LO 16•REF 16•REF IF RF – LO LO – RF RF image RF – 2IF RF + 2IF The following table depicts crystal, LO and image signals considering the examples of 315 MHz and 433.6 MHz RF reception at IF = 10.7 MHz. Signal type RF = 315 MHz RF = 315 MHz RF = 433.6 MHz RF = 433.6 MHz Injection type low high low high 19.01875 20.35625 26.43125 27.76875 LO / MHz 304.3 325.7 422.9 444.3 RF image / MHz 293.6 336.4 412.2 455.0 REF / MHz The selection of the reference crystal frequency is based on some assumptions. As for example: the image frequency should not be in a radio band where strong interfering signals might occur (because they could represent parasitic receiving signals), the LO signal should be in the range of 300 MHz to 430 MHz (because this is the optimum frequency range of the VCO1). Furthermore the IF should be as high as possible to achieve highest RF image rejection. The columns in bold depict the selected frequency plans to receive at 315 MHz and 433.6 MHz, respectively. TH71101 Data Sheet 3901071101 Page 4 of 20 Nov. 2001 Rev. 005 TH71101 315/433MHz FSK/FM/ASK Receiver Pin Definition and Description Pin No. 3 Name OUT_LNA I/O Type Functional Schematic analog output Description LNA open-collector output, to be connected to external LC tank that resonates at RF OUT_LNA 3 31 1 IN_LNA VEE_LNAC analog input IN_LNA ground 31 LNA input, approx. 26Ω single-ended 5k VEE_LNAC 1 2 GAIN_LNA analog input ground of LNA core (cascode) LNA gain control (CMOS input with hysteresis) GAIN_LNA 400Ω 2 4 IN_MIX1 analog input MIX1 input, approx. 33Ω single-ended 13Ω IN_MIX1 4 13Ω 500µA 5 VEE_MIX ground 6 IF1P analog I/O LNA biasing ground VCC 20p IF1P 7 IF1N analog I/O IF1N 20p 7 6 open-collector output, to be connected to external LC tank that resonates at first IF 2x500µA VEE VEE 8 VCC_MIX supply 9 OUT_MIX2 analog output open-collector output, to be connected to external LC tank that resonates at first IF MIX1 and MIX2 positive supply 6.8k OUT_MIX2 MIX2 output, approx. 330Ω output impedance 130Ω 9 230µA 10 VEE_IF TH71101 Data Sheet 3901071101 ground ground for MIX2, IFA and DEMOD Page 5 of 20 Nov. 2001 Rev. 005 TH71101 315/433MHz FSK/FM/ASK Receiver Pin No. 11 12 Name IN_IFA FBC1 I/O Type Functional Schematic analog input analog I/O IN_IFA FBC1 11 12 2.2k 2.2k 200µA FBC2 analog I/O IFA input, approx. 2.2kΩ input impedance VCC VCC VEE VCC 13 Description FBC2 to be connected to external IFA feedback capacitor VEE VEE to be connected to external IFA feedback capacitor 13 VEE 14 VCC_IF supply positive supply for IFA, DEMOD 15 OUT_IFA analog I/O IFA output and MIX3 input (of DEMOD) OUT_IFA 15 40µA 16 IN_DEM analog input DEMOD input, to MIX3 core 47k IN_DEM 16 17 VCC_BIAS supply positive supply of general bias system and OA 18 OUT_OA analog output OA output, 40uA current drive capability OUT_OA 50Ω 18 19 OAN analog input 20µA OAN 20 OAP TH71101 Data Sheet 3901071101 analog input 50Ω 19 Page 6 of 20 50Ω negative OA input, input voltage limited to approx. 0.7 Vpp between pins OAP and OAN OAP negative OA input, input 20 voltage limited to approx. 0.7 Vpp between pins OAP and OAN Nov. 2001 Rev. 005 TH71101 315/433MHz FSK/FM/ASK Receiver Pin No. 21 Name RSSI I/O Type Functional Schematic analog output 50Ω RSSI Description RSSI output, for RSSI and ASK detection, approx. 36kΩ output impedance I (Pi) 21 36k 22 VEE_BIAS ground ground for general bias system and OA 23 OUTP analog output FSK/FM positive output, output impedance of 100kΩ to 300kΩ OUTP OUTN 50Ω 24 OUTN analog 25 VEE_RO ground ground of dividers, PFD and RO 26 RO analog input RO input, Colpitts type oscillator with internal feedback capacitors 23 24 20µA 20µA 50k RO 26 FSK/FM negative output, output impedance of 100kΩ to 300kΩ 30p 30p 27 VCC_PLL supply positive supply of RO, DIV, PFD and charge pump 28 ENRX digital input mode control input (CMOS Input) ENRX 1.5k 28 29 LF analog output charge pump output and VCO1 control input LF 200Ω 29 400Ω 4p 30 VEE_LNA ground LNA biasing ground 32 VCC_LNA supply positive supply of LNA biasing TH71101 Data Sheet 3901071101 Page 7 of 20 Nov. 2001 Rev. 005 TH71101 315/433MHz FSK/FM/ASK Receiver Technical Data Mode Configurations ENRX Mode 0 SBY 1 ON Note: ENRX are pulled down internally Description standby mode entire chip active LNA Gain Control VGAIN_LNA Mode < 0.8 V > 1.4 V HIGH GAIN LOW GAIN Description LNA set to high gain by voltage at GAIN_LNA LNA set to low gain by voltage at GAIN_LNA Note: hysteresis between gain modes to ensure stability Absolute Maximum Ratings Parameter Supply voltage Input voltage Input RF level Storage temperature Electrostatic discharge Symbol Vcc VIN Pimax TSTG ESD Condition / Note Min Max Unit 0 - 0.3 -40 7.0 VCC+0.3 10 +125 V V dBm °C human body model, MIL STD 833D method 3015.7, all pins except OUT_IFA pin OUT_IFA -500 -500 +500 +250 V V Condition Min Max Unit 2.5 2.7 -40 300 ±5 5.5 5.5 +85 450 ±120 40 15 80 V V ºC MHz kHz kbit/s kHz kbit/s no damage Normal Operating Conditions Parameter Supply voltage at 315 MHz Supply voltage at 433 MHz Operating temperature Input frequency Frequency deviation FSK data rate FM bandwidth ASK data rate TH71101 Data Sheet 3901071101 Symbol Vcc, 315 Vcc, 433 Ta fi ∆f RFSK fm RASK fi ≤ 400 MHz fi > 400 MHz at FM or FSK NRZ NRZ Page 8 of 20 Nov. 2001 Rev. 005 TH71101 315/433MHz FSK/FM/ASK Receiver DC Characteristics all parameters under normal operating conditions, unless otherwise stated; typical values at Ta = 23 °C and Vcc = 3 V Parameter Symbol Standby current Total supply current at low gain ISBY Icc, low Total supply current at high gain Icc, high Opamp input offset voltage Opamp input offset current Opamp input bias current RSSI voltage at low input level Voffs Ioffs Ibias VRSSI, low RSSI voltage at high input level VRSSI, high Condition ENRX=0 ENRX=1, LNA at LOW GAIN ENRX=1, LNA at HIGH GAIN IOAP – IOAN 0.5 * (IOAP + IOAN) Pi = -65 dBm, LNA at LOW GAIN Pi = -35 dBm, LNA at LOW GAIN Min Typ Max Unit 5.0 6.5 100 8.0 nA mA 6.5 8.2 10.0 mA -20 -50 -100 0.5 1.0 20 50 100 1.5 mV nA nA V 1.25 1.9 2.45 V AC System Characteristics all parameters under normal operating conditions, unless otherwise stated; all parameters based on test circuits for FSK (Fig. 2), FM (Fig. 4) and ASK (Fig. 5), respectively; typical values at Ta = 23 °C and Vcc = 3 V, RF at 433.6 MHz, second IF at 10.7 MHz Parameter Symbol start-up time – FSK/FM TFSK start-up time – ASK TASK input sensitivity – FSK (narrow band) Pmin, n input sensitivity – FSK (wide band) Pmin, w input sensitivity – ASK PminA, n (narrow band) input sensitivity – ASK PminA, w (wide band) maximum input signal – FSK/FM Pmax, FM maximum input signal – ASK Pmax, ASK spurious emission image rejection blocking immunity VCO gain Charge pump current Pspur ∆Pimag ∆Pblock KVCO ICP Condition Min ENRX from 0 to 1, valid data at output depends on ASK detector time constant, valid data at output BIF2 = 40kHz ∆f = ±15kHz (FSK/FM) -3 BER ≤ 3⋅10 BIF2 = 150kHz ∆f = ±50kHz (FSK/FM) -3 BER ≤ 3⋅10 BIF2 = 40kHz -3 BER ≤ 3⋅10 BIF2 = 150kHz -3 BER ≤ 3⋅10 -3 BER ≤ 3⋅10 LNA at LOW GAIN -3 BER ≤ 3⋅10 LNA at LOW GAIN Typ Max Unit 0.9 ms R3•C12 + TFSK ms -111 dBm -104 dBm -109 dBm -106 dBm 0 dBm -10 dBm -70 ∆fblock > ±2MHz, note 1 55 57 250 60 dBm dB dB MHz/V µA Notes: 1. desired signal with FSK/FM or ASK modulation, CW blocking signal TH71101 Data Sheet 3901071101 Page 9 of 20 Nov. 2001 Rev. 005 TH71101 315/433MHz FSK/FM/ASK Receiver Test Circuits FSK Reception C14 C15 C16 OAN OAP RSSI C1 CP C13 IN_DEM C12 OUT_IFA RO VCC OUT_OA XTAL VEE VEE OUTP OUTN VCC VCC VCC VCC VCC CERRES C11 FBC2 LF FBC1 C9 C3 IN_IFA VCC IF1N IF1P VEE VEE OUT_LNA VCC VEE VCC SAWFIL L2 C5 GAIN_LNA IN_LNA C10 LQFP32 VEE IN_MIX1 R1 ENRX CERFIL OUT_MIX2 C7 L1 C4 L3 C6 RL2 CB* VCC Fig. 2: Test circuit for FSK reception TH71101 Data Sheet 3901071101 Page 10 of 20 Nov. 2001 Rev. 005 TH71101 315/433MHz FSK/FM/ASK Receiver FSK test circuit component list to Fig. 2 Part Size Value / Type Tolerance C1 0805 15 pF ±10% C3 0805 1 nF ±10% C4 0603 3.3 pF ±5% C5 0603 3.3 pF ±5% C6 0603 4.7 pf ±5% C7 0603 2.2 pf ±5% C9 0805 33 nF ±10% C10 0603 1 nF ±10% C11 0603 1 nF ±10% C12 0603 1.5 pF ±5% C13 0603 680 pF ±10% CP 0805 10 – 12 pF ±5% C14 0805 10 – 47 pF ±5% C15 0805 10 – 47 pF ±5% C16 0603 330 pF ±10% R1 10 kΩ 470 Ω ±10% RL1 0805 0805 RL2 0805 470 Ω ±5% L1 0603 33 nH ±5% L2 0603 33 nH ±5% L3 0603 15 nH XTAL HC49 SMD 26.43125 MHz @ RF = 433.6 MHz SAWFIL QCC8C B3555 @ RF = 433.6 MHz CERFIL Leaded type SFE10.7MFP @ BIF2 = 40 kHz SMD type SFECV10.7MJS-A @ BIF2 = 150 kHz SMD type CDACV10.7MG18-A CERRES ±5% ±5% Description crystal series capacitor loop filter capacitor capacitor to match to SAW filter input capacitor to match to SAW filter output LNA output tank capacitor MIX1 input matching capacitor IFA feedback capacitor IFA feedback capacitor IFA feedback capacitor DEMOD phase-shift capacitor DEMOD coupling capacitor CERRES parallel capacitor demodulator output low-pass capacitor, depending on data rate demodulator output low-pass capacitor, depending on data rate RSSI output low-pass capacitor loop filter resistor MIX1 bias resistor MIX1 bias resistor inductor to match SAW filter inductor to match SAW filter LNA output tank inductor fundamental-mode crystal, Cload = 10 pF to 15pF, C0, max = 7 pF, Rm, max = 50 Ω ±25ppm calibration ±30ppm temp. B3dB = 860 kHz low-loss SAW filter from EPCOS ±100 kHz (f0 = 433.92 MHz) TBD ceramic filter from Murata ±40 kHz ceramic demodulator tank from Murata NIP – not in place, may be used optionally TH71101 Data Sheet 3901071101 Page 11 of 20 Nov. 2001 Rev. 005 TH71101 315/433MHz FSK/FM/ASK Receiver FSK Circuit with AFC and Ceramic Resonator Tolerance Compensation C14 C15 C16 C17 C18 R4 R3 VCC VCC OAN OAP RSSI C1 CP VD C13 IN_DEM C12 OUT_IFA RO VCC OUT_OA XTAL VEE VEE OUTP OUTN R5 VCC VCC VCC CERRES C11 FBC2 LF FBC1 C9 C3 IN_IFA VCC IF1N IF1P VEE VEE OUT_LNA VCC VEE VCC SAWFIL L2 C5 GAIN_LNA IN_LNA C10 LQFP32 VEE IN_MIX1 R1 ENRX CERFIL OUT_MIX2 C7 L1 L3 C4 C6 RL1 RL2 CB* VCC Fig. 3: Test circuit for FSK with AFC and resonator compensation Circuit Feature ! ! ! ! Improves input frequency acceptance range up to RFnom ±50 kHz Eliminates calibration tolerances of ceramic resonator Eliminates temperature tolerances of ceramic resonator Non-inverted and inverted CMOS-compatible outputs TH71101 Data Sheet 3901071101 Page 12 of 20 Nov. 2001 Rev. 005 TH71101 315/433MHz FSK/FM/ASK Receiver FSK test circuit with AFC component list to Fig. 3 Part Size Value / Type Tolerance C1 0805 15 pF ±10% C3 0805 1 nF ±10% C4 0603 3.3 pF ±5% C5 0603 3.3 pF ±5% C6 0603 4.7 pF ±5% C7 0603 2.2 pF ±5% C9 0805 33 nF ±10% C10 0603 1 nF ±10% C11 0603 1 nF ±10% C12 0603 1.5 pF ±5% C13 0603 680 pF ±10% CP 0805 27 pF ±5% C14 0805 10 – 47 pF ±5% C15 0805 10 – 47 pF ±5% C16 0603 330 pF ±10% C17 33 nF ±10% 33 nF 10 nF 1 nF ±10% 10 kΩ ±10% ±10% C18 0805 R1 R3 0805 0805 R4 R5 RL1 0805 0805 0805 100 kΩ 680 kΩ 680 kΩ 470 Ω RL2 0805 470 Ω ±5% L1 0603 33 nH ±5% L2 0603 33 nH ±5% L3 0603 15 nH ±5% VD SOD-323 BB535 XTAL HC49 SMD 26.43125 MHz @ RF = 433.6 MHz SAWFIL QCC8C B3555 @ RF = 433.6 MHz CERFIL Leaded type SFE10.7MFP @ BIF2 = 40 kHz SMD type SFECV10.7MJS-A @ BIF2 = 150 kHz SMD type CDACV10.7MG18-A CERRES ±10% ±10% ±5% Description crystal series capacitor loop filter capacitor capacitor to match to SAW filter input capacitor to match to SAW filter output LNA output tank capacitor MIX1 input matching capacitor IFA feedback capacitor IFA feedback capacitor IFA feedback capacitor DEMOD phase-shift capacitor DEMOD coupling capacitor ceramic resonator loading capacitor demodulator output low-pass capacitor, depending on data rate demodulator output low-pass capacitor, depending on data rate RSSI output low-pass capacitor integrator capacitor, fixed integrator capacitor, @ 0.5 to 2 kbit/s NRZ integrator capacitor, @ 2 to 20 kbit/s NRZ integrator capacitor, @ 20 to 40 kbit/s NRZ loop filter resistor varactor diode biasing resistor integrator resistor integrator resistor MIX1 bias resistor MIX1 bias resistor inductor to match SAW filter inductor to match SAW filter LNA output tank inductor varactor diode from Infineon fundamental-mode crystal, Cload = 10 pF to 15pF, C0, max = 7 pF, Rm, max = 50 Ω ±25ppm calibration ±30ppm temp. B3dB = 860 kHz low-loss SAW filter from EPCOS ±100 kHz (f0 = 433.92 MHz) TBD ceramic filter from Murata ±40 kHz ceramic demodulator tank from Murata NIP – not in place, may be used optionally TH71101 Data Sheet 3901071101 Page 13 of 20 Nov. 2001 Rev. 005 TH71101 315/433MHz FSK/FM/ASK Receiver FM Reception C14 R6 R5 R4 C16 R3 VCC VCC OAN OAP RSSI C1 CP C13 IN_DEM C12 OUT_IFA RO VCC OUT_OA XTAL VEE VEE OUTP OUTN C15 VCC VCC VCC CERRES C11 FBC2 LF FBC1 C9 C3 IN_IFA VCC IF1N IF1P VEE VEE OUT_LNA VCC VEE VCC SAWFIL L2 C5 GAIN_LNA IN_LNA C10 LQFP32 VEE IN_MIX1 R1 ENRX CERFIL OUT_MIX2 C7 L1 C4 L3 C6 RL1 RL2 CB* VCC Fig. 4: Test circuit for FM reception TH71101 Data Sheet 3901071101 Page 14 of 20 Nov. 2001 Rev. 005 TH71101 315/433MHz FSK/FM/ASK Receiver FM test circuit component list to Fig. 4 Part Size Value / Type Tolerance Description C1 0805 15 pF ±10% C3 0805 1 nF ±10% C4 0603 3.3 pF ±5% C5 0603 3.3 pF ±5% C6 0603 4.7 pF ±5% C7 0603 2.2 pF ±5% C9 0805 33 nF ±10% C10 0603 1 nF ±10% C11 0603 1 nF ±10% C12 0603 1.5 pF ±5% C13 0603 680 pF ±10% crystal series capacitor loop filter capacitor capacitor to match to SAW filter input capacitor to match to SAW filter output LNA output tank capacitor MIX1 input matching capacitor IFA feedback capacitor IFA feedback capacitor IFA feedback capacitor DEMOD phase-shift capacitor DEMOD coupling capacitor CERRES parallel capacitor sallen-Key low-pass filter capacitor, to set cut-off frequency sallen-Key low-pass filter capacitor, to set cut-off frequency RSSI output low-pass capacitor loop filter resistor sallen-Key filter resistor, to set desired filter characteristic sallen-Key filter resistor, to set desired filter characteristic sallen-Key filter resistor, to set cut-off frequency sallen-Key filter resistor, to set cut-off frequency MIX1 bias resistor MIX1 bias resistor inductor to match SAW filter inductor to match SAW filter LNA output tank inductor fundamental-mode crystal, Cload = 10 pF to 15pF, C0, max = 7 pF, Rm, max = 50 Ω CP 0805 10 – 12 pF ±5% C14 0805 100 pF ±5% C15 0805 100 pF ±5% C16 0603 330 pF ±10% R1 0805 10 kΩ ±10% R3 0805 12 kΩ ±5% R4 0805 6.8 kΩ ±5% R5 0805 33 kΩ ±5% R6 0805 0805 33 kΩ 470 Ω ±5% RL2 0805 470 Ω ±5% L1 0603 33 nH ±5% L2 0603 33 nH ±5% RL1 L3 0603 15 nH XTAL HC49 SMD 26.43125 MHz @ RF = 433.6 MHz SAWFIL QCC8C B3555 @ RF = 433.6 MHz CERFIL leaded type SFE10.7MFP @ BIF2 = 40 kHz SMD type SFECV10.7MJS-A @ BIF2 = 150 kHz SMD type CDACV10.7MG18-A CERRES ±5% ±5% ±25ppm calibration ±30ppm temp. B3dB = 860 kHz low-loss SAW filter from EPCOS ±100 kHz (f0 = 433.92 MHz) TBD ceramic filter from Murata ±40 kHz ceramic demodulator tank from Murata NIP – not in place, may be used optionally TH71101 Data Sheet 3901071101 Page 15 of 20 Nov. 2001 Rev. 005 TH71101 315/433MHz FSK/FM/ASK Receiver ASK Reception R3 C13 VCC OAN OAP RSSI VCC OUT_OA XTAL VEE VEE OUTP OUTN C12 IN_DEM OUT_IFA RO C1 VCC VCC VCC VCC C11 FBC2 LF FBC1 C9 C3 IN_IFA VCC IF1N IF1P VEE VEE OUT_LNA VCC VEE VCC SAWFIL L2 C5 GAIN_LNA IN_LNA C10 LQFP32 VEE IN_MIX1 R1 ENRX CERFIL OUT_MIX2 C7 L1 C4 L3 C6 RL1 RL2 CB* VCC Fig. 5: Test circuit for ASK reception TH71101 Data Sheet 3901071101 Page 16 of 20 Nov. 2001 Rev. 005 TH71101 315/433MHz FSK/FM/ASK Receiver ASK test circuit component list to Fig. 5 Part Size Value / Type Tolerance C1 0805 15 pF ±10% C3 0805 1 nF ±10% C4 0603 3.3 pF ±5% C5 0603 3.3 pF ±5% C6 0603 4.7 pF ±5% C7 0603 2.2 pF ±5% C9 0805 33 nF ±10% C10 0603 1 nF ±10% C11 0603 1 nF ±10% C12 0805 1 nF to 10 nF ±10% C13 0603 330 pF ±10% R1 0805 10 kΩ ±10% R3 RL1 0603 0805 100 kΩ 470 Ω ±5% RL2 0805 470 Ω ±5% L1 0603 33 nH ±5% L2 0603 33 nH ±5% L3 0603 15 nH XTAL HC49 SMD 26.43125 MHz @ RF = 433.6 MHz SAWFIL QCC8C B3555 @ RF = 433.6 MHz CERFIL leaded type SFE10.7MFP @ BIF2 = 40 kHz SMD type SFECV10.7MJS-A @ BIF2 = 150 kHz ±5% ±5% Description crystal series capacitor loop filter capacitor capacitor to match to SAW filter input capacitor to match to SAW filter output LNA output tank capacitor MIX1 input matching capacitor IFA feedback capacitor IFA feedback capacitor IFA feedback capacitor ASK data slicer capacitor, depending on data rate RSSI output low-pass capacitor loop filter resistor ASK data slicer resistor, depending on data rate MIX1 bias resistor MIX1 bias resistor inductor to match SAW filter inductor to match SAW filter LNA output tank inductor fundamental-mode crystal, Cload = 10 pF to 15pF, C0, max = 7 pF, Rm, max = 50 Ω ±25ppm calibration ±30ppm temp. B3dB = 860 kHz low-loss SAW filter from EPCOS ±100 kHz (f0 = 433.92 MHz) TBD ceramic filter from Murata ±40 kHz NIP – not in place, may be used optionally TH71101 Data Sheet 3901071101 Page 17 of 20 Nov. 2001 Rev. 005 TH71101 315/433MHz FSK/FM/ASK Receiver Package Dimensions D D1 24 17 16 25 E e E1 32 9 1 A A2 b 8 A1 L Fig. 6: LQFP32 (Low Quad Flat Package) All Dimension in mm, coplanaríty < 0.1mm E1, D1 A A1 A2 e b min 0.05 1.35 0.30 7.00 0.8 max 1.60 0.15 1.45 0.45 All Dimension in inch, coplanaríty < 0.004” min 0.002 0.053 0.012 0.276 0.031 max 0.630 0.006 0.057 0.018 TH71101 Data Sheet 3901071101 Page 18 of 20 L 0.45 E, D α 0° 9.00 0.75 7° 0.018 0° 0.354 0.030 7° Nov. 2001 Rev. 005 TH71101 315/433MHz FSK/FM/ASK Receiver Your Notes TH71101 Data Sheet 3901071101 Page 19 of 20 Nov. 2001 Rev. 005 TH71101 315/433MHz FSK/FM/ASK Receiver Your Notes Important Notice Devices sold by Melexis are covered by the warranty and patent indemnification provisions appearing in its Term of Sale. Melexis makes no warranty, express, statutory, implied, or by description regarding the information set forth herein or regarding the freedom of the described devices from patent infringement. Melexis reserves the right to change 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. This product is intended for use in normal commercial applications. Applications requiring extended temperature range, 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. The information furnished by Melexis is believed to be correct and accurate. However, 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 technical data herein. No obligation or liability to recipient or any third party shall arise or flow out of Melexis’ rendering of technical or other services. © 2000 Melexis GmbH. All rights reserved. For the latest version of this document. Go to our website at www.melexis.com Or for additional information contact Melexis Direct: Europe and Japan: All other locations: Phone: +32 1361 1631 E-mail: [email protected] Phone: +1 603 223 2362 E-mail: [email protected] QS9000, VDA6.1 and ISO14001 Certified TH71101 Data Sheet 3901071101 Page 20 of 20 Nov. 2001 Rev. 005