SL2030

SL2030 High Performance Broadband Mixer Oscillator Preliminary Information DS5116 Issue 2.1 October 1999 Features G G G G G Ordering Information SL2030/IG/MP1S (Tubes) SL2030/IG/MP1T (Tape and Reel) Single Chip Broadband Solution Wide Dynamic Range RF Input Low Phase Noise Balanced Internal Local Oscillator Wide Frequency Range: 50 to 860 MHz ESD Protection 2kV min., MIL-STD-883B Method 3015 Cat.1 (Normal ESD handling procedures should be observed) Applications G G G G Double Conversion Tuners Digital Terrestrial Tuners Data Transmit Systems Data Communications Systems The SL2030 is a bipolar, broadband wide dynamic range mixer oscillator, optimised for applications as an upconverter in double conversion tuner systems. It also has application in any system where a wide dynamic range broadband frequency converter is required. The SL2030 is a single chip solution containing all necessary active circuitry and simply requires an external tuneable resonant network for the local oscillator. The block diagram is shown in Figure 1 and pin connections are shown in Figure 2. In normal application the high IF output is interfaced through appropriate impedance matching to the high IF filter. The RF input preamplifier of the device is designed for low noise figure within the operating region and for high intermodulation distortion intercept so offering good signal to noise plus composite distortion spurious performance. The preamplifier also provides gain to the mixer section and back isolation from the local oscillator section. The approximate model of the RF input is shown in Figure 3. The output of the preamplifier is fed to the mixer section which is optimised for low radiation application. In this stage the RF signal is mixed with the local oscillator frequency, which is generated by an on-chip oscillator. The oscillator block uses an external tuneable network and is optimised for low phase noise. A typical application is shown in Figure 6 and the typical phase noise performance in Figure 5. This block also contains a buffer-amplifier to interface with an external PLL to allow for frequency synthesis of the local oscillator. The IF output must be loaded differentially in order to get best intermodulation performance. The approximate model of the IF output is shown in Figure 4. In application care should be taken to achieve symmetric balance to the IF outputs to maximise intermodulation performance. Absolute Maximum Ratings Supply voltage, VCC RF differential input voltage All I/O port DC offset Storage temperature Junction temperature Package thermal resistance Chip to ambient, θJA Chip to case, θJC 20·3V to 17V 2·5V 20·3 to VCC 10·3V 255°C to 1150°C 1150°C 20°C/W 80°C/W RFIN RFIN LO2 IF1 IF2 PRSC1 LO1 Figure 1 SL2030 block diagram SL2030 IF2 NC GND GND GND GND RFIN RFIN 1 2 3 4 5 6 7 8 16 15 14 IF1 NC VCC/VCO LO2 LO1 VCC/VCO PRSC1 VCC/LNA SL 2030 13 12 11 10 9 MP16 Figure 2 Pin connections - top view Quick Reference Data All data applies with circuit component values given in Table 1 Characteristic Value Units MHz dB dB dBµV dBc dBµV dBµV dBc dBc/Hz dBµV dBµV 50-860 RF input operating frequency range 8 Input noise Figure, SSB, 50 to 860MHz 8 Conversion gain 50 to 860MHz 121 IIP3 input referred ,264 CTB (fully loaded matrix) 104 P1dB input referred 145 IIP2 input referred ,262 Composite 2nd order (fully loaded matrix) LO phase noise at10 kHz offset, fRF 50 to 860MHz, application as in Figure 6 ,285,see Figure 5 LO leak to RF input 72 Fundamental 92 Second harmonic Electrical Characteristics Tamb = 240°C to 185°C, VCC = 5V 65%, VEE = 0V. These characteristics are guaranteed by either production test or design. They apply within the specified ambient temperature and supply voltage ranges unless otherwise stated. Value Characteristic Supply current Pin 9,11,14 Min. Typ. Max. 99 Units mA Conditions IF output pins 1 and 16 will be nominally connected to VCC through the differential balun load as in Figure 6 Operating condition only See Figure 3 Differential voltage gain to 50Ω load on output of impedance transformer as in Figure 6. 50-860MHz Channel bandwidth 8MHz within operating frequency range 45-865MHz cont… Input frequency range Composite peak input signal Input impedance Input return loss Conversion gain 7,8 7,8 7,8 7,8 50 97 25 8 860 MHz dBµV dB dB 10 225 11 Gain variation across operating range Gain variation within channel Through gain Noise figure 21 11 0·5 220 10 dB dB 6·5 8 2 SL2030 Electrical Characteristics (continued) Value Characteristic IIP2 IIP3 Composite 2nd order LO operating range LO phase noise, SSB at 10kHz offset IF output frequency range LO and harmonic leakage to RF input Fundamental 2nd harmonic LO Prescaler output swing LO Prescaler output impedance IF output impedance Pin Min. 139 117 12,13 1·0 294 1,16 1 287 Typ. 145 121 262 Max. 153 126 2·1 285 1·3 Units dBµV dBµV dBc GHz Conditions Two tones at 92dBµV Two tones at 92dBµV 128 channels at 62dBµV Maximum tuning range 0·9GHz within band, application as in Figure 6 dBc/Hz Application as Figure 6. See Figure 5 for a typical device GHz dBµV dBµV dBµV Ω 7,8 7,8 10 10 1,16 72 92 95 25 75 To device input To device input Into 50Ω load See Figure 4 6 PIN 7 3·3p 6 PIN 8 820 PIN 16 PIN 1 2p 325 Figure 3 Approximate model of RF input 288 Figure 4 Approximate model of IF output PHASE NOISE (dBc/Hz MKRN) 289 290 291 292 50 100 200 300 400 500 600 700 800 850 RF INPUT FREQUENCY (MHz) Figure 5 Phase noise performance Application Notes Figure 6 shows the SL2030 in a typical upconverter application. The network connected to RF input pin 7 and pin 8 is to improve the matching between the device input and the source. The source would normally be from a cable, via passive LPF and PlN-diode attenuator all designed for 75Ω characteristic impedance. The network connected to the IF output pin 1 and pin 16 is a broadband tuned balun centred typically on 1·1 GHz. This matches the device output impedance of nominally 400Ω (balanced) to 50Ω (unbalanced). The network connected to the LO pin 12 and pin 13 is a varactor diode loaded resonant microstrip line resonator. Fine adjustment of the tuning range can be achieved by shortening the line (top end) or by physically moving C19 (see Figure 6) closer to the LO pins. This extends the bottom end of the tuning range. It is important to provide good decoupling on the 5V supplies and to use a layout which provides some isolation between the RF, IF and LO ports. 3 SL2030 IF OUT VCC1 R3 B1 BALUN C5 L2 R4 C16 R5 C20 L4 C6 VCC3 C4 VCC2 L7 C35 L6 C33 L3 C32 C11 J2 POWER 1 5V DEVICE SUPPLY 2 GND VCC3 C15 C14 VCC2 C17 C9 D2 L5 IF2 1 2 16 15 14 IF1 GND GND GND C2 C29 C1 SKT1 RFIN R2 GND L10 L11 RFIN RFIN 3 4 5 6 7 8 VCC/VCO LO2 LO1 VCC/VCO PRSC1 VCC/LNA C3 C8 C10 C13 D1 C19 S1 RESONATOR SL 2030 13 12 11 10 9 R10 SKT4 EXTERNAL VARACTOR DRIVE (REMOVE R9) VCC1 C18 R1 C21 R12 R9 C22 L1 SKT2 130V NOTE: Refer to Table 1 for component values C4 L9 C42 C31 R7 CP X1 C30 XTAL 1 2 3 4 5 6 7 8 16 15 14 R8 DRIVE VEE RF I/P RF I/P VCC ADC C43 P0 P1 R11 C24 T1 BCW31 30V 15V REF/COMP 15V J3 SCL5 5V SDA5 3 4 5 6 J1 POWER 1 30V SYNTHESISER 2 ADDRESS SDA SCL P3 P2 SP 5659 13 12 11 10 9 GND 5V SYNTHESISER 5V 3 C46 C41 I2C BUS C47 C38 Figure 6 SL2030 upconverter application 4 SL2030 Component C1 C2 C3 C4 C5 C6 C7 C8 C9 C10 C11 C12 C13 C14 C15 C16 C17 C18 C19 C20 C21 C22 C23 C24 C25 Value/type 1nF 1nF 1 nF 1·5pF 1pF 1pF 100pF 100pF 100pF 10µF 100nF 100nF 100pF 100pF 100nF 100nF 2pF 100pF 1nF 33nF 1nF Component C26 C27 C28 C29 C30 C31 C32 C33 C34 C35 C36 C37 C38 C39 C40 C41 C42 C43 C44 C45 C46 C47 D1 D2 L1 Value/type Component L2 L3 L4 L5 L6 L7 L8 L9 L10 L11 R1 R2 R3 R4 R5 R6 R7 R8 R9 R10 R11 R12 S1 T1 X1 Value/type 18nH 220nH 18nH 220nH 220nH 220nH 6·8nH 6·8nH 220Ω 20Ω 1kΩ 120Ω 120Ω 15kΩ 22kΩ 15kΩ 1kΩ 4·7kΩ 50Ω Resonator (Figure 7) BCW31 4MHz crystal 1·5pF 18pF 330nF 1nF 1nF 100nF 1nF 100pF 4·7µF 3·3nF 100nF 100nF 100pF IT402 IT402 100nH Table 1 Component values for Figure 6 0·5 0·5 1·5 1·0 1·5 0·5 3 3 3 Figure 7 Microstrip resonator (dimensions are in mm) 5 http://www.mitelsemi.com World Headquarters - Canada Tel: +1 (613) 592 2122 Fax: +1 (613) 592 6909 North America Tel: +1 (770) 486 0194 Fax: +1 (770) 631 8213 Asia/Pacific Tel: +65 333 6193 Fax: +65 333 6192 Europe, Middle East, and Africa (EMEA) Tel: +44 (0) 1793 518528 Fax: +44 (0) 1793 518581 Information relating to products and services furnished herein by Mitel Corporation or its subsidiaries (collectively “Mitel”) is believed to be reliable. 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