znbg3210 Zetex Semiconductors plc., znbg3210 Datasheet
znbg3210
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znbg3210 Summary of contents
Page 1
... The detector has been specifically designed to reject inerference such as low frequency signals and DiSEqC - without the use of additional external components. Drain current setting of the ZNBG3210/11 is user selectable over the range 0 to 15mA, this FEATURES Provides bias for GaAs and HEMT FETs Drives up to three FETs ...
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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 to 85°C ELECTRICAL CHARACTERISTICS. TEST CONDITIONS (Unless otherwise stated):T SYMBOL PARAMETER ...
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... POL GO2 = POL GO2 =12 I =-10 GO3 = GO3 = 5 to 10V =10mA, V =15.5V POL =10mA, V =15.5V POL =10mA, V =14V POL =10mA, V =14V POL =10mA =10mA = 5 to 10V =0.5V, V =14V POL =0.5V, V =15.5V POL 67-3 ZNBG3210 ZNBG3211 LIMITS UNITS MIN. TYP. MAX. -30 2000 A -0.05 0 0.05 V -2.7 -2.4 -2.0 V 0.4 0.75 1.0 V -0.05 0 0.05 V -2.7 -2.4 -2.0 V 0.4 0.75 1.0 V -3.5 -2.9 -2.0 V 0.4 ...
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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 V R (AC)in Output Stage V L Volt. Range I =50mA(L LOV Bias Current ...
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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 Drain Current (mA) JFET Drain Voltage v Drain Current Note:- Operation with loads > 200µA Vcc = 5V 0.0 -0.5 -1.0 -1.5 -2.0 -2.5 -3.0 80 100 0 0.2 External Vsub Load (mA) ...
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... Frequency (Hz) Open Loop Phase v Frequency 1 1.2 V =0.1Vpkpk IN Test Circuit 1 1.0 0.8 0.6 0.4 0.2 0 100 1k 10k 100k Frequency (Hz) Filter Response ZNBG3210 ZNBG3211 10M Load Current (mA) LB/HB Offset Voltage v Load Current 2 1.9 1.8 1.7 1.6 1.5 1.4 1.3 1.2 10M Load Current (mA) LB/HB Dropout Voltage v Load Current ...
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... 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 the ZNBG series. The ZNBG3210/11 contains 3 such stages. The negative rail generator is common to all devices. ...
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... FET number Q3 is always active regardless of the voltage applied POL Control Input Switch Function Input Sense Polarisation Select Vertical FET Q2 14 volts 15.5 volts Horizontal FET Q1 ZNBG3210 ZNBG3211 input. Only one of the two external FETs POL 67-9 . POL ...
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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 diagram, the main elements of this detector are an op-amp enabling the construction of a Sallen Key filter, a rectifier/smoother and a comparator ...
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... 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. pin. SUB 67-11 ZNBG3210 ZNBG3211 ...
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... 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, FET bias control, polarisation switch control, tone detection and band switching with the minimum of external components ...
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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 0.053 G 0.10 0.25 0.004 J 5.79 6.20 0.228 K 0° 8° 0° Zetex plc. Fields New Road, Chadderton, Oldham, OL9-8NP, United Kingdom. Telephone: (44)161 622 4422 (Sales), (44)161 622 4444 (General Enquiries) ...
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... This page intentionally left blank ZNBG3210 ZNBG3211 67-15 ...