ZNBG3211Q20TC Diodes Zetex, ZNBG3211Q20TC Datasheet
ZNBG3211Q20TC
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ZNBG3211Q20TC Summary of contents
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FET BIAS CONTROLLER WITH POLARISATION SWITCH AND TONE DETECTION ISSUE 2 - FEBRUARY 2000 DEVICE DESCRIPTION The ZNBG series of devices are designed to meet the bias requirements of GaAs and HEMT FETs commonly used in satellite receiver LNBs, PMR ...
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ZNBG3210 ZNBG3211 ABSOLUTE MAXIMUM RATINGS Supply Voltage -0.6V to 12V Supply Current 100mA Input Voltage (V ) 25V Continuous POL Drain Current (per FET 15mA (set CAL Operating Temperature -40 to 70°C Storage Temperature -50 ...
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SYMBOL PARAMETER CONDITIONS GATE CHARACTERISTICS I Output Current GO Range I Dx (mA) Output Voltage V Gate 1 Off I D1 G1O V Low I D1 G1L V High I D1 G1H Output Voltage V Gate 2 Off I D2 ...
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ZNBG3210 ZNBG3211 SYMBOL PARAMETER CONDITIONS TONE DETECTION CHARACTERISTICS Filter Amplifier I Input Bias Current Output Voltage R OUT Output Current V OUT OUT G Voltage Gain f=22kHz,V V Rejection 8 f Frequency ...
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TEST CIRCUIT 1 TEST CIRCUIT 2 ZNBG3210 ZNBG3211 V2 Characteristics Type AC source Frequency 22kHz Voltage 350mV p/p enabled 100mV p/p disabled V2 Characteristics Type AC source Frequency 22kHz Voltage 350mV p/p enabled 100mV p/p disabled 67-5 ...
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ZNBG3210 ZNBG3211 TYPICAL CHARACTERISTICS (k) cal JFET Drain Current v R 2.4 ZNBG3210 ONLY 2.3 2.2 Vcc = 10V 2.1 2 ...
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TYPICAL CHARACTERISTICS 70 Vcc = 100 1k 10k 100k 1M Frequency (Hz) Open Loop Gain v Frequency V CC 180 150 120 100 1k 10k 100k 1M Frequency ...
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ZNBG3210 ZNBG3211 FUNCTIONAL DIAGRAM FUNCTIONAL DESCRIPTION The ZNBG devices provide all the bias requirements for external FETs, including the generation of the negative supply required for gate biasing, from the single supply voltage.The diagram above shows a single stage from ...
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The following schematic shows the function of the V numberd Q1 and Q2 are powered at any one time, their selection is controlled by the input V This input is designed to be wired to the power input of the ...
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ZNBG3210 ZNBG3211 For many LNB applications tone detection and band switching is required. The ZNBG3210/11 includes the circuitry necessary to detect the presence of a 22kHz tone modulated on the supply input to the LNB. Referring to the following schematic ...
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APPLICATIONS CIRCUIT APPLICATIONS INFORMATION The above is a partial application circuit for the ZNBG 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 ...
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ZNBG3210 ZNBG3211 The following block diagram shows the main section of an LNB designed for use with the Astra series of satellites. The ZNBG3210/11 is the core bias and control element of this circuit. The ZNBG provides the negative rail, ...
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APPLICATIONS INFORMATION(cont) Figure 1 L grounded OV Figure 2 L connected OSC ZNBG3210 ZNBG3211 67-13 ...
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ZNBG3210 ZNBG3211 CONNECTION DIAGRAM ORDERING INFORMATION Part Number Package ZNBG3210Q20 QSOP20 ZNBG3211Q20 QSOP20 Part Mark ZNBG3210 ZNBG3211 67-14 ...
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ZNBG3210 ZNBG3211 PACKAGE DIMENSIONS IDENTIFICATION RECESS FOR PIN 1 PIN No.1 PIN Millimetres Inches MIN MAX MIN A 8.55 8.74 0.337 B 0.635 0.025 NOM C 1.42 1.52 0.056 D 0.20 0.30 0.008 E 3.81 3.99 0.15 F 1.35 1.75 ...
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