AT1512 Preliminary product Information FET BIAS CONTROLLER AND TONE DETECTION Features Description •Provides bias for GaAs and HEMT FETs •Drives up to 3 FETs with Dynamic FET protection •Regulated negative rail generator requires only 2 external capacitors •Drain current set by external resistor •Choice in drain voltage •Wide supply voltage range •Polarisation switch for LNBs - supporting zero volt gate switching topology •22kHz tone detection for band switching •Compliant with ASTRA control specifications •SSOP-20 surface mount package The AT1512 includes bias circuits to drive up to 3 external FETs. A control input to the device selects either one of two FETs as operational using 0V gate switching topology, the third FET is permanently active. This feature is particularly used as an LNB polarisation switch. Also specific to LNB applications is the enhanced 22kHz tone detection and logic output feature which is used to enable high and low band frequency switching. The detector has been specifically designed to reject inerference such as low frequency signals and DiSEqCTM tone bursts - without the use of additional external components. Applications Drain current setting of the AT1512 is user selectable over the range from 0 to 15mA, this is achieved with the addition of a single resistor. The series also offers the choice of FET drain voltage, the AT1512 gives 2V. ˙Satellite receiver LNBs ˙Private mobile radio (PMR) ˙Cellular telephones These devices are unconditionally stable over the full working temperature with the FETs in place, subject to the inclusion of the recommended gate and drain capacitors. These ensure RF stability and minimal injected noise. It is possible to use less than the devices full complement of FET bias controls, unused drain and gate connections can be left open circuit without affecting operation of the remaining bias circuits. In order to protect the external FETs the circuits have been designed to ensure that, under any conditions including power up/down transients, the gate drive from the bias circuits cannot exceed the range -3.5V to 1V. Furthermore if the negative rail experiences a fault condition, such as overload or short circuit, the drain supply to the FETs will shut down avoiding excessive current flow. The AT1512 are available in SSOP20 for the minimum in device size. Device operating temperature is -40 to 70°C to suit a wide range of environmental conditions. Aimtron reserves the right without notice to change this circuitry and specifications. 2F, No.10, Prosperity RD. II, Science-Based Industrial Park, Hsinchu 300,Taiwan, R.O.C. Tel: 886-3-563-0878 Fax: 886-3-563-0879 WWW:http://www.aimtron.com.tw 2005/10/19 REV:1.0 Email: [email protected] 1 AT1512 Preliminary product Information FET BIAS CONTROLLER AND TONE DETECTION Block Diagram (a) Drain Voltage & Current Controller (b)Polarisation Switch 2F, No.10, Prosperity RD. II, Science-Based Industrial Park, Hsinchu 300,Taiwan, R.O.C. Tel: 886-3-563-0878 Fax: 886-3-563-0879 WWW:http://www.aimtron.com.tw 2005/10/19 REV:1.0 Email: [email protected] 2 AT1512 Preliminary product Information FET BIAS CONTROLLER AND TONE DETECTION (c)Tone Detection Pin Descriptions Pin No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 Pin name G1 D1 G2 D2 G3 D3 GND CP CN N.C. VOUT LB HB LOV FOUT N.C. FIN VPOL ICTL VCC Function 1st Gate output voltage Pin 1st Drain output voltage Pin 2nd Gate output voltage Pin 2nd Drain output voltage Pin 3rd Gate output voltage Pin 3rd Drain output voltage Pin Ground Pin Positive OSC output Pin Negative OSC output Pin No connect Pin Negative voltage output Pin Error Amplifier output Pin Error Amplifier inverted output Pin Error Amplifier input Pin Filter input Pin No connect Pin Filter output Pin Polarisation switch controller Pin Drain Current set Resistor connect Pin Supply voltage Pin 2F, No.10, Prosperity RD. II, Science-Based Industrial Park, Hsinchu 300,Taiwan, R.O.C. Tel: 886-3-563-0878 Fax: 886-3-563-0879 WWW:http://www.aimtron.com.tw 2005/10/19 REV:1.0 Email: [email protected] 3 AT1512 Preliminary product Information FET BIAS CONTROLLER AND TONE DETECTION Pin Configuration Ordering Information Part number Package Marking AT1512R AT1512R_GRE SSOP20 SSOP20,Green AT1512R AT1512R,date code with one bottom line Absolute maximum ratings (Ta = 25oC) Parameter Power supply voltage Supply Current Input Voltage Drain Current Operating temperature Storage temperature Power dissipation Symbol VCC ICC VPOL VD Topr Tstg Pd Limits -0.6~12 100 25 0~15 -40~+70 -50~+85 500 unit V mA V mA o C o C mW Limits 5~10 unit V Recommended operating conditions (Ta = 25oC) Parameter Power supply voltage Symbol VCC 2F, No.10, Prosperity RD. II, Science-Based Industrial Park, Hsinchu 300,Taiwan, R.O.C. Tel: 886-3-563-0878 Fax: 886-3-563-0879 WWW:http://www.aimtron.com.tw 2005/10/19 REV:1.0 Email: [email protected] 4 AT1512 Preliminary product Information FET BIAS CONTROLLER AND TONE DETECTION Electrical characteristics Parameter Supply Voltage Supply Current Negative Voltage Drain Output Noise Voltage Gate Output Noise Voltage Oscillator Freq. DRAIN Drain Current (Unless otherwise stated, Ta=25°C, VCC=5V, ID=10mA, RCTL=33kΩ) Symbol Min. Typ. Max. Unit Conditions VCC 5 -10 V -6 15 mA ID1 to ID3=0 I =0,ID2 to ID3=10mA, -25 35 mA D1 VPOL=14V ICC I =0,ID1 to ID3=10mA, -25 35 mA D2 VPOL=15.5V -16 25 ID1 to ID3=0, ILB=10mA -16 25 mA ID1 to ID3=0, IHB=10mA -3.5 -3.0 -2.5 V IOUT= 0 VOUT ---2.4 V IOUT= -200µA END --0.02 VPP CG=4.7nF, CD=10nF ENG --0.005 VPP CG=4.7nF, CD=10nF fo 200 350 800 kHz ID ∆IDV ∆IDT VD1 VD2 VD3 ∆VDV ∆VDT IL1 IL2 8 --1.8 1.8 1.8 ----- 10 0.5 0.05 2.0 2.0 2.0 0.5 50 --- 12 --2.2 2.2 2.2 --10 10 mA %/V %/℃ V V V %/V ppm µA µA IGO VG10 -30 -0.05 -0 2000 0.05 µA V VG1L -3.5 -2.9 -2.0 V VG1H 0.4 0.75 1.0 V VG20 -0.05 0 0.05 V VG2L -3.5 -2.9 -2.0 V VG2H VG3L VG3H 0.4 -3.5 0.4 0.75 -2.9 0.75 1.0 -2.0 1.0 V V V ID1=0, VPOL=14V, IGO1=0 ID1=12mA, VPOL=15.5V, IGO1=-10µA ID1=8mA, VPOL=15.5V, IGO1=0 ID2=0, VPOL=15.5V, IGO2=0 ID2=12mA, VPOL=14V, IGO2=-10µA ID2=8mA, VPOL=14V, IGO2=0 ID3=12mA, IGO3=-10µA ID3=8mA, IGO3=0 TONE DETECTION Input Bias Current Output Voltage Output Current Voltage Gain Rejection Frequency LOV Volt. Range LOV Bias Current IB VOUT IOUT GV fR VLOV ILOV LB Output Low VLBL LB Output High VLBH 0.02 1.75 400 -1.0 -0.5 0.02 -3.5 -0.01 -0.025 2.9 µA V µA dB kHz V µA V V V V RF1=150kΩ RF1=150kΩ VOUT=1.96V, VFIN=2.1V f=22kHz,VIN=1mV V(AC)in=1V p/p sq.w IL=50mA(LB or HB) VLOV=0 VLOV=0, IL=-10µA, Enabled VLOV=3V, IL=0, Enabled VLOV=0, IL=10mA, Disabled VLOV=3V,IL=50mA,Disabled Drain Current Charge with VCC Drain Current Charge with Tj Drain Voltage Drain Voltage Charge with VCC Drain Voltage Charge with Tj Leakage Current GATE Gate Output Current Range Gate1 Output Voltage Gate2 Output Voltage Gate3 Output Voltage 0.07 0.25 1.95 2.05 520 650 46 -7.5 -VCC-1.8 -0.15 1.0 -2.75 -2.5 0 0.01 0 0.025 3.0 3.1 VCC=5 to 10V Tj=-40 to +70°C ID1=10mA, VPOL=15.5V ID2=10mA, VPOL=14V ID3=10mA VCC=5 to 12V Tj=-40 to +70°C VD1=0.5V, VPOL=14V VD2=0.5V, VPOL=15.5V 2F, No.10, Prosperity RD. II, Science-Based Industrial Park, Hsinchu 300,Taiwan, R.O.C. Tel: 886-3-563-0878 Fax: 886-3-563-0879 WWW:http://www.aimtron.com.tw 2005/10/19 REV:1.0 Email: [email protected] 5 AT1512 Preliminary product Information FET BIAS CONTROLLER AND TONE DETECTION -3.5 -0.01 -0.025 2.9 -2.75 0 0 3.0 -2.5 0.01 0.025 3.1 V V V V IPOL 10 20 40 µA Threshold Voltage VTPOL 14 14.75 15.5 V Switching Speed TSPOL -- -- 100 ms HB Output Low VHBL HB Output High VHBH VLOV=0, IL=-10µA,Disabled VLOV=3V, IL=0, Disabled VLOV=0, IL=10mA, Enabled VLOV=3V, IL=50mA,Enabled POLARITY SWITCH Input Current VPOL=25V(Applied via RPOL=10kΩ) VPOL=25V(Applied via RPOL=10kΩ) VPOL=25V(Applied via RPOL=10kΩ) 2F, No.10, Prosperity RD. II, Science-Based Industrial Park, Hsinchu 300,Taiwan, R.O.C. Tel: 886-3-563-0878 Fax: 886-3-563-0879 WWW:http://www.aimtron.com.tw 2005/10/19 REV:1.0 Email: [email protected] 6 AT1512 Preliminary product Information FET BIAS CONTROLLER AND TONE DETECTION Test Circuit (a) LOV Connected to ground (b) LOV Connected to VOSC 2F, No.10, Prosperity RD. II, Science-Based Industrial Park, Hsinchu 300,Taiwan, R.O.C. Tel: 886-3-563-0878 Fax: 886-3-563-0879 WWW:http://www.aimtron.com.tw 2005/10/19 REV:1.0 Email: [email protected] 7 AT1512 Preliminary product Information FET BIAS CONTROLLER AND TONE DETECTION Application Circuit Application Information (a) LOV Connected to ground 2F, No.10, Prosperity RD. II, Science-Based Industrial Park, Hsinchu 300,Taiwan, R.O.C. Tel: 886-3-563-0878 Fax: 886-3-563-0879 WWW:http://www.aimtron.com.tw 2005/10/19 REV:1.0 Email: [email protected] 8 AT1512 Preliminary product Information FET BIAS CONTROLLER AND TONE DETECTION (b) LOV Connected to VOSC 2F, No.10, Prosperity RD. II, Science-Based Industrial Park, Hsinchu 300,Taiwan, R.O.C. Tel: 886-3-563-0878 Fax: 886-3-563-0879 WWW:http://www.aimtron.com.tw 2005/10/19 REV:1.0 Email: [email protected] 9 AT1512 Preliminary product Information FET BIAS CONTROLLER AND TONE DETECTION Package Outlines : 20-pin SSOP SYMBOL A A1 A2 b C D E E1 L e y θ MILLIMETERS MIN TYP MAX 1.47 1.60 1.73 0.10 0.25 1.37 1.45 1.52 0.23 0.25 0.36 0.19 0.20 0.25 8.53 8.64 8.74 5.79 5.99 6.20 3.81 3.91 3.99 0.38 0.71 1.27 0.64 0.076 0° 8° MIN 0.058 0.004 0.054 0.009 0.0075 0.336 0.228 0.150 0.015 0° INCHES TYP 0.063 0.057 0.010 0.008 0.340 0.236 0.154 0.028 0.025 - MAX 0.068 0.010 0.060 0.014 0.0098 0.344 0.244 0.157 0.050 0.003 8° 2F, No.10, Prosperity RD. II, Science-Based Industrial Park, Hsinchu 300,Taiwan, R.O.C. Tel: 886-3-563-0878 Fax: 886-3-563-0879 WWW:http://www.aimtron.com.tw 2005/10/19 REV:1.0 Email: [email protected] 10 AT1512 Preliminary product Information FET BIAS CONTROLLER AND TONE DETECTION Reflow Profiles Profile Feature Average ramp-up rate (TL to TP) Preheat -Temperature Min(Tsmin) -Temperature Max (Tsmax) -Time (min to max)(ts) Tsmax to TL -Ramp-up Rate Time maintained above: -Temperature (TL) -Time (tL) Peak Temperature(TP) Time within 5°C of actual Peak Temperature (tP) Ramp-down Rate Time 25°C to Peak Temperature Sn-Pb Eutectic Assembly Large Body Small Body Pkg. thickness Pkg. thickness <2.5mm or Pkg. ≥2.5mm or Pkg. 3 volume ≥350mm3 volume <350mm 3°C/second max. Pb-Free Assembly Large Body Small Body Pkg. thickness Pkg. thickness ≥2.5mm or Pkg. ≥2.5mm or Pkg. volume ≥350mm3 volume ≥350mm3 3°C/second max. 100°C 150°C 60-120 seconds 150°C 200°C 60-180 seconds 3°C/second max. 183°C 60-150 seconds 217°C 60-150 seconds 225+0/-5°C 10-30 seconds 240+0/-5°C 10-30 seconds 245+0/-5°C 10-30 seconds 6°C/second max. 6 minutes max. 250+0/-5°C 20-40 seconds 3°C/second max. 8 minutes max. *All temperatures refer to topside of the package, measured on the package body surface. 2F, No.10, Prosperity RD. II, Science-Based Industrial Park, Hsinchu 300,Taiwan, R.O.C. Tel: 886-3-563-0878 Fax: 886-3-563-0879 WWW:http://www.aimtron.com.tw 2005/10/19 REV:1.0 Email: [email protected] 11