UNISONIC TECHNOLOGIES CO., LTD L8221 Preliminary LINEAR INTEGRATED CIRCUIT SINGLE LNB–BIAS, CONTROL AND POWER MANAGEMENT SOLUTION DESCRIPTION The UTC L8221 is a single chip power management and control solution for LNB’s. The highly integrated solution provides all the required FET and mixer bias, control detection and decoding, local oscillator switching and a stable power supply for the IF amplifier and additional support functions. Being at the heart of the LNB monitoring the control, power management and environmental conditions the UTC L8221 is able to provide reliable solution eliminating effects such as false switching and over loading. HSOP-8 FEATURES * Single chip LNB bias, control and power management * 22kHz tone detector with signal rejection for band switching * Zero Gate FET switching * Integrated regulated supply for LNB * Voltage detection for polarization switching * Programmable mixer and FET bias * Single pin for supply and control * No external filtering required * Temperature compensated protected FET bias ORDERING INFORMATION Ordering Number L8221G-SH2-R Package HSOP-8 Packing Tape Reel MARKING www.unisonic.com.tw Copyright © 2016 Unisonic Technologies Co., Ltd 1 of 5 QW-R123-020.a L8221 Preliminary PIN CONFIGURATION PIN DESCRIPTION PIN NO. 1 2 3 4 5 6 7 8 9 PIN NAME G1 D1 D2 G2 VOUT HB VIN CSUB GND LINEAR INTEGRATED CIRCUIT DESCRIPTION To G of fet 1 To D of fet 1 To D of fet 2 To G of fet 2 5V Output Terminal To HB osc. Power Supply (Include both voltage and tone signal) Connect an external cap to -2.5V Gnd (connect heat sink to ground) BLOCK DIAGRAM UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 2 of 5 QW-R123-020.a L8221 Preliminary LINEAR INTEGRATED CIRCUIT ABSOLUTE MAXIMUM RATING PARAMETER SYMBOL RATINGS UNIT Supply Voltage VIN -0.6 ~ 25 V Supply Current IIN 120 mA Power Dissipation PD 1000 mW Operating Temperature Range TOPR -40 ~ +85 °C Storage Temperature Range TSTG -40 ~ +125 °C Note: Absolute maximum ratings are those values beyond which the device could be permanently damaged. Absolute maximum ratings are stress ratings only and functional device operation is not implied. ELECTRICAL CHARACTERISTICS (TA=25°C, VIN=13V, unless otherwise specified) PARAMETER Supply Voltage Operating Range Supply Current No Load Supply Current Max Bias Load Current (Note1) Max Osc Load Current (Note 1) Max Lout Load Current (Note 1) VOUT VOUT SYMBOL VIN TEST CONDITIONS TYP MAX 22 UNIT V 2 3 20 20 80 mA mA mA mA 4.75 -3.0 5 -2.5 14.1 14.7 5.25 -2.0 -2.0 15.4 1 V V V V ms IIN (no load) I D1=ID2=0mA I D1 or ID2 HB VOUT Substrate Voltage VSUB VPOL Threshold Pol Switching Speed Output Noise Drain Voltage Gate Voltage Tone Detector Tdetect Threshold Rejection Freq (Note 2) Lo Output Stage HB VOUT Low HB VOUT High Gate Characteristics G1 Output Voltage Off Voltage Low Voltage High G2 Output Voltage Off Voltage Low Voltage High VPOL TPOL VIN=10.5V ~ 21V, IOUT=30mA (Internally generated), ISUB=0mA ISUB=-20uA Applied Via VIN VIN (Low)=13V, VIN (High)=18V CGATE-GND=4.7nF, CDRAIN-GND=10nF ICGATE-GND=4.7nF, CDRAIN-GND=10nF 0.02 Vpk-pk 0.005 Vpk-pk VTONE FTONE Test Circuit Test Circuit, V (AC) in=1Vp/p sq.w. 100 1.0 170 7.5 300 mV kHz VHBL VHBH II=0, Test Circuit , Tone disabled II=20mA, Test Circuit, Tone enabled -0.01 4.5 0 0.01 VOUT V V VG1O VG1L VG1H I D1=0, VIN=14V, IG1=0 I D1<=12mA, VIN=15.5V, IG1=-10uA I D1=>8mA, VIN=15.5V, IG1=0 -0.05 -3.0 0.4 0 -2.5 0.65 0.05 -2.0 1.0 V V V VG2O VG2L VG2H ID2=0, VIN=15.5V, IG2=0 I D1<=12mA, VIN=14V, IG2=-10uA IG2=>8mA, VIN=14V, IG2=0 -0.05 -3.0 0.4 0 -2.5 0.65 0.05 -2.0 1.0 V V V UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw MIN 8 3 of 5 QW-R123-020.a L8221 Preliminary LINEAR INTEGRATED CIRCUIT ELECTRICAL CHARACTERISTICS (Cont.) PARAMETER SYMBOL TEST CONDITIONS MIN TYP Drain Characteristics D1 Output Voltage High VD1 I D1=10mA, VIN=15.5V 1.8 2.0 Leakage Current ILEAK1 V D1=0.5, VIN=14V D2 Output Voltage High VD2 ID2=10mA, VIN=14V 1.8 2.0 Leakage Current ILEAK2 VD2=0.5, VIN=15.5V D1, 2 Delta VD vs. VCC ∆VDV VCC=9 ~ 21V 0.5 Delta VD vs. TJ ∆VDT TJ=-40 ~ +85°C 50 FET Current Range I D1, I D2 0 Drain Current ID ID1, ID2, RCALA=22K 8 10 Delta Id vs. VCC ∆IDV VCC=9 ~ 21V 0.5 Delta Id vs. TJ ∆IDT TJ=-40 ~ +85°C 0.05 Notes: 1. The total combined load currents should not exceed the stated maximum load current. 2. The UTC L8221 series will also reject DiSEqC and other common switching tone bursts. UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw MAX UNIT 2.2 10 V uA 2.2 10 V uA 15 12 %/V ppm mA mA %/V %/°C 4 of 5 QW-R123-020.a L8221 Preliminary LINEAR INTEGRATED CIRCUIT TEST CIRCUIT The above is partial application circuit for the UTC L8221 series showing all external components required for appropriate biasing. The bias circuits are unconditionally stable over the full temperature range with the associated FETs and gate and drain capacitors in circuit. Capacitors C1 and C2 ensure that residual power supply and substrate generator noise is not allowed to affect other external circuits which may be sensitive to RF interference. They also serve to suppress any potential RF feed through between stages via the UTC L8221 device. These capacitors are required for all stages used. Values of 10nF and 4.7nF respectively are recommended however this is design dependent and any value between 1nF and 100nF could be used. The capacitor CSUB is an integral part of the UTC L8221’s negative supply generator. The negative bias voltage is generated on-chip using an internal oscillator. The required value of capacitor CSUB is 47nF. This generator produces a low current supply of approximately -3 volts. Although this generator is intended purely to bias the external FETs, it can be used to power other external low current circuits via the CSUB pin. The UTC L8221 devices have been designed to protect the external FETs form adverse operating conditions. With a JFET connected to any bias circuit, the gate output voltage of the bias circuit can not exceed the range -3.0V~1V under any conditions, including power up and power down transients. Should the negative bias generator be shorted or overloaded so that the drain current of the external FETs can no longer be controlled, the drain supply to FETs is shut down to avoid damage to the FETs by excessive drain current. The UTC L8221 incorporates over and under voltage protection so is the receiver or installation develops a fault the LNB will shut down and restart once operating conditions are back to normal. UTC assumes no responsibility for equipment failures that result from using products at values that exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or other parameters) listed in products specifications of any and all UTC products described or contained herein. UTC products are not designed for use in life support appliances, devices or systems where malfunction of these products can be reasonably expected to result in personal injury. Reproduction in whole or in part is prohibited without the prior written consent of the copyright owner. The information presented in this document does not form part of any quotation or contract, is believed to be accurate and reliable and may be changed without notice. UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 5 of 5 QW-R123-020.a