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ML2712CH Datasheet(PDF) 6 Page - Micro Linear Corporation |
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ML2712CH Datasheet(HTML) 6 Page - Micro Linear Corporation |
6 / 22 page ML2712 6 January, 2000 PRELIMINARY PRELIMINARY DATASHEET 26 1IFB I/O IF Input/Output Inverted. In RECEIVE Mode, functions with 1IF to present a balanced first IF output port with 340 W output impedance. Connection must be AC coupled. It is recommended that the signal trace connected to this pin be isolated from other signal or digital control lines to maintain receiver sensitivity In TRANSMIT Mode, functions with 1IF to present a balanced first IF input port with 340 W input impedance. Connection must be AC coupled. It is recommended that the signal trace connected to this pin be isolated from other signal or digital control lines to maintain receiver sensitivity Receiver Section 30 RRFI I Receive RF Input signal. It is recommended that the nominal input impedance of 20 W on this pin be matched and be AC coupled 45 RSSI I (Analog) Received Signal Strength Indicator input 1 TPL O Digital to Analog Converter high output voltage defined by contents of Control Register E 2 RSTH O (CMOS) RSSI Threshold output. High output indicates RSSI input is greater than TPL. Digital to Analog Converter output voltage 19 T1LO (Tank Port) First Local Oscillator Tank circuit. T1LO and T1LOB provide a balanced pair for connection to an external parallel inductor/capacitor tank circuit that determines the frequency of oscillation 20 T1LOB (Tank Port) Inverted First Local Oscillator Tank circuit. T1LOTB and T1LO provide a balanced pair for connection to an external parallel inductor/capacitor tank circuit that determines the frequency of oscillation 13 QP1 O Charge Pump output of 1LO Phase Locked Loop. Analog output switches between VCC 2 and ground 38 QP2 O (Analog) Charge Pump output of 2LO Phase Locked Loop charge pump output. Analog output switches between VCC 6 and ground as controlled by the phase detector in the 2LO PLL 43 T2LO O (Analog) Second Local Oscillator Tank circuit. T2LO and GND (pin 44) provide an unbalanced pair for a connection to an external parallel inductor/capacitor tank circuit that determines the frequency of oscillation 22 BG I/O (Analog) Bandgap voltage output. Connection available for bypass capacitor recommended for noise decoupling from Bandgap voltage reference. Recommended capacitance value is 10nF connected to ground Mode Control 46 LOE I (CMOS) Local Oscillator Enable 47 TS I (CMOS) Transmit Switch 48 RS I (CMOS) Receive Switch Serial Interface 5 EN I (CMOS) Enable serial data 8 DACEN I (CMOS) D/A Converter Enable 6 DATA I (CMOS) Serial Data 7 CLK I (CMOS) Clock input for serial data PIN DESCRIPTIONS (continued) Pin # Signal Name I/O Type Description |
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