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AD61009 Fiches technique(PDF) 4 Page - Analog Devices |
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AD61009 Fiches technique(HTML) 4 Page - Analog Devices |
4 / 24 page REV. 0 –4– AD61009 PIN FUNCTION DESCRIPTIONS Pin Mnemonic Reads Function 1 FDIN Frequency Detector Input PLL input for I/Q demodulator quadrature oscillator, ±400 mV drive required from external oscillator. Must be biased at VP/2. 2 COM1 Common #1 Supply common for RF front end and main bias. 3 PRUP Power-Up Input 3 V/5 V CMOS compatible power-up control; logical high = powered-up; max input level = VPS1 = VPS2. 4 LOIP Local Oscillator Input LO input, ac coupled ±54 mV LO input required (–16 dBm for 50 Ω input termination). 5 RFLO RF “Low” Input Usually connected to ac ground. 6 RFHI RF “High” Input AC coupled, ±56 mV, max RF input for linear operation. 7 GREF Gain Reference Input High impedance input, typically 1.5 V, sets gain scaling. 8 MXOP Mixer Output High impedance, single-sided current output, ±1.3 V max voltage output ( ±6 mA max current output). 9 VMID Midsupply Bias Voltage Output of the midsupply bias generator (VMID = VPOS/2). 10 IFHI IF “High” Input AC coupled IF input, ±56 mV max input for linear operation. 11 IFLO IF “Low” Voltage Reference node for IF input; auto-offset null. 12 GAIN Gain Control Input High impedance input, 0 V–2 V using 3 V supply, max gain at V = 0. 13 COM2 Common #2 Supply common for IF stages and demodulator. 14 IFOP IF Output Low impedance, single-sided voltage output, 5 dBm ( ±560 mV) max. 15 DMIP Demodulator Input Signal input to I and Q demodulators ±150 mV max input at IF > 3 MHz for linear operation; ±75 mV max input at IF < 3 MHz for linear operation. Must be biased at VP/2. 16 VPS2 VPOS Supply #2 Supply to high-level IF, PLL, and demodulators. 17 QOUT Quadrature Output Low impedance Q baseband output; ±1.23 V full scale in 20 kΩ min load; ac coupled. 18 IOUT In-Phase Output Low impedance I baseband output; ±1.23 V full scale in 20 kΩ min load; ac coupled. 19 FLTR PLL Loop Filter Series RC PLL Loop filter, connected to ground. 20 VPS1 VPOS Supply #1 Supply to mixer, low level IF, PLL, and gain control. PIN CONNECTION 20-Lead SSOP (RS-20) 14 13 12 11 17 16 15 20 19 18 10 9 8 1 2 3 4 7 6 5 TOP VIEW (Not to Scale) AD61009 FDIN QOUT IOUT FLTR VPS1 COM1 PRUP LOIP IFOP DMIP VPS2 RFLO RFHI GREF MXOP VMID IFHI IFLO GAIN COM2 |
Numéro de pièce similaire - AD61009 |
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Description similaire - AD61009 |
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