FRAUNHOFER INSTITUTE FOR INTEGRATED CIRCUITS IIS DATASHEET TBPF-220-425 Figure 1. tbpf-220-425 front side 14.0 x 15.0 mm Sub 1GHz Digitally Tunable Bandpass Filter Solderable Module The tbpf-220-425 is a lumped-element tunable preselection bandpass that consists of three coupled resonators. The bandpass employs a digitally tunable capacitor and allows for tuning the center frequency with a resolution of 5 bits. The tbpf-220-425 covers the center frequency range from 220 MHz to 425 MHz, including the DVB-T frequency band, a fractional 1dB bandwidth of 8.4 14%, an insertion loss of 6.7 db ± 1.3 db within the tuning range, and a stop-band attenuation of 60 db. Fraunhofer Institute for Integrated Circuits IIS Am Wolfsmantel 33 91058 Erlangen, Germany Contact communicationsystems@iis.fraunhofer.de www.iis.fraunhofer.de/rf-filter Fraunhofer IIS Datasheet tbpf-220-425 v02.11.17 1 7
The filter measures 14.00 mm by 15.00 mm and consists of a 4-layer FR-4 substrate with 3.62 mm height. A 3-wire SPI enables the digital control interface to a software defined receiver or transmitter platform. Footprint and pins are compatible with tbpf-430-890, tbpf-700-1410. Pin # Name Description 1 GND Ground 2 GND Ground 3 RF_IN RF Input 50Ω 4 MOSI (SDA) SPI Data In 5 GND Ground 6 CS (SEN) SPI Chip Select 7 SCLK (SCL) SPI Clock 8 GND Ground 9 VCC Supply Voltage 10 GND Ground 11 GND Ground 12 RF_OUT RF Output 50Ω Figure 2. Pin Configuration TOP View Table 1. Pin Descriptions Typical Application The tbpf-220-425 is ideal for RF harmonic filtering applications including: Multi-band receiver/transmitter Multi-standard transceiver Software defined radio (SDR) Cognitive radio Frequency monitoring Features Tunable center frequency: 220 425 MHz Tuning range: 205 MHz Fractional 1dB-bandwidth: 8.4 14 % Interface: 3-wire serial port interface (SPI) High linearity: OIP3 37 dbm Type: SMD solderable module Temperature range: -10 C to 50 C PCB: 4-Layer 14.00 x 15.00 mm PCB Electrostatic Discharge (ESD) Precautions When handling this tbpf-220-425 device, observe the same precautions that you would use with other ESD-sensitive devices. Although this device contains circuitry to protect it from damage due to ESD, precautions should be taken to avoid exceeding the specified rating. Fraunhofer IIS Datasheet tbpf-220-425 v02.11.17 2 7
Electrical Specifications Parameter Conditions Min. Typ. Max. Units Analog performance Tunable center frequency (fc) range 220 425 MHz @ fc = 220 MHz 14.0 % Fractional 1 db bandwidth @ fc = 295 MHz 12.5 % (FBW) @ fc = 425 MHz 8.4 % @ fc = 220 MHz 5.4 db Insertion loss (IL) in passband @ fc = 295 MHz 5.6 db @ fc = 425 MHz 8.0 db Rejection at stopband highside @ fc = 220 MHz, 37.0 db (fsh) fsh = 440 MHz @ fc = 425 MHz, 45.7 db fsh = 700 MHz Rejection at stopband low-side @ fc = 220 MHz, 50.0 db (fsl) fsl = 144 MHz @ fc = 425 MHz, 50.0 db fsl = 302 MHz 1dB compression point @ @ fc = 300 MHz 30 31 33 dbm input (INP1dB) Output intercept point 3rd @ fc = 250 MHz 31 34 37 dbm order in passband (OIP3) 1) Digital performance Switching time 2) 3) 12 µs Start-up time 2) 4) 100 µs Table 2. Electrical Specifications TA = +25 C, Vcc = 3.3V, Substrate: FR-4 Notes: 1. Measurements were done at an input power of pin = 0 dbm, 2-tone delta frequency f = 1 MHz 2. DC path to ground at RF input and output must be provided to achieve specified performance 3. Time between any two states 4. Time from VCC within specification to all performances within specification Parameter Min. Typ. Max. Units V CC supply voltage 2.3 3.3 3.6 V I DD power supply current (V CC = 3.3V) 420 600 µa I DD standby current (V CC = 3.3V) 75 µa V IH control voltage high 1.2 1.8 3.6 V V IL control voltage low 0 0 0.6 V RF input power (50Ω) 30 33 dbm 220 425 MHz T OP operating temperature range -10 25 +50 C Table 3. Operation Ratings Symbol Parameter Min. Max. Units V CC Power supply voltage -0.3 4.0 V V I Voltage on any DC input -0.3 4.0 V Table 4. Absolute Maximum Ratings Fraunhofer IIS Datasheet tbpf-220-425 v02.11.17 3 7
Magnitude db(s(2,1)) Forward Transmission Magnitude S21 0-5 -10-15 -20-25 -30-35 -40-45 -50-55 -60-65 -70-75 -80 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 1.1 1.2 Figure 3. S21 Magnitude evaluated from stage 02 to 31 in 4-steps 0 freq, GHz Reflexion Port 1 Magnitude S11 Figure 4. S11 Magnitude -5 db(s(1,1)) -10-15 -20 0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 1.1 1.2 freq, GHz Fraunhofer IIS Datasheet tbpf-220-425 v02.11.17 4 7
0 Reflexion Port 2 Magnitude S22 Figure 5. S22 Magnitude -10 db(s(2,2)) -20-30 -40 0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 1.1 1.2 freq, GHz Output Intercept Point 3rd Order Figure 6. Output IP3 at 250 MHz Fraunhofer IIS Datasheet tbpf-220-425 v02.11.17 5 7
Evaluation Board Figure 7. Evaluation Board Evaluation boards for the tbpf-220-425 (see Figure 7) are available. For more information please refer to the user manual of EVM600S. Package Drawing Figure 8. Package Drawing All dimensions are given in mm. Dimensional and geometrical accuarcy of the package refers to DIN ISO 2768-m standard. Fraunhofer IIS Datasheet tbpf-220-425 v02.11.17 6 7
Footprint Recommendation Figure 9. Footprint Recommendation All dimensions are given in mm. Dimensional and geometrical accuarcy of the package refers to DIN ISO 2768-m standard. Part Number Package Body Material Lead Finish tbpf-220-425-s RoHS-compliant chem. Ni-Au Table 5. Package Information Part Number Description tbpf-xxx-yyy-s tbpf = tunable bandpass filter xxx = minimum tunable center frequency yyy = maximum tunable center frequency s = solderable The information in this document is subject to change without notice. Fraunhofer IIS Datasheet tbpf-220-425 v02.11.17 7 7