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AD6122 Folha de dados(PDF) 4 Page - Analog Devices |
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AD6122 Folha de dados(HTML) 4 Page - Analog Devices |
4 / 20 page REV. B AD6122 –4– PIN FUNCTION DESCRIPTIONS SSOP LPCC Pin # Pin # Pin Label Description Function 1 30 PD1 Power-Down 1 IF Amplifier Power-Down Control Input; CMOS Com- patible; HIGH = Entire IC Powers Down, LOW = IF Amplifiers On. 2 31 PD2 Power-Down 2 Modulator Power-Down Control Input; CMOS Compat- ible; HIGH = Modulator Off , LOW = Modulator On. 3 32 LDOE Low Dropout Regulator Pass Connects to Emitter of External PNP Pass Transistor Transistor Emitter Connection and VCC. 4 1 LDOB Low Dropout Regulator Pass Connects to Base of External PNP Pass Transistor. Transistor Base 5 2 LDOC Low Dropout Regulator Pass Connects to Collector of External PNP Pass Transistor. Transistor Collector 6 3, 4 LDOGND Low Dropout Regulator Ground Ground. 7 5 DGND Digital Ground Ground. 8 6 LOIPP Local Oscillator “Positive” Input Connects to Local Oscillator; AC Coupled. 9 7 LOIPN Local Oscillator “Negative” Input Connects to Ground via Decoupling Capacitor. 10 8 DVCC Digital VCC Connects to Digital Supply. 11 9 TXOPP Transmit Output “Positive” Connects to Output Filter; AC Coupled. 12 10 TXOPN Transmit Output “Negative” Connects to Output Filter; AC Coupled. 13 11 TXVCC Transmit Output VCC Connects to LDO Output via Decoupling Network. 14 12, 13 IFGND IF Ground Ground. 15 14 IFINN IF Input “Negative” IF “Negative” Input from LC Roofing Filter. 16 15 IFINP IF Input “Positive” IF “Positive” Input from LC Roofing Filter. 17 16 MODOPN Modulator “Negative” If Output Output Modulator Output to LC Roofing Filter. 18 17 MODOPP Modulator “Positive” Output Modulator Output to LC Roofing Filter. 19 18 QIPP Q Input “Positive” Connects to Q “Positive” Output of Baseband IC. 20 19 QIPN Q Input “Negative” Connects to Q “Negative” Output of Baseband IC. 21 20 MODCMREF Modulator Common-Mode Connects to CDMA Baseband Converter Tx DAC Reference Out Common-Mode Reference Input. 22 21 IIPN I Input “Negative” Connects to I “Negative” Output of Baseband IC. 23 22 IIPP I Input “Positive” Connects to I “Positive” Output of Baseband IC. 24 23, 24 IFGND Ground Connects to IF Ground. 25 NC No Connect 25 26 IFVCC IF VCC Connects to Decoupled Output of LDO Regulator. 26 27 REFOUT Gain Control Reference Output Provides 1.23 V Voltage Reference Output for DAC in CDMA Baseband Converter and REFIN. 27 28 REFIN Gain Control Reference Input Accepts 1.23 V Reference Input from REFOUT or External Reference. 28 29 VGAIN Gain Control Voltage Input Accepts Gain Control Input Voltage from External DAC. Max Gain = 2.5 V; Min Gain = 0.5 V. |
Nº de peça semelhante - AD6122 |
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Descrição semelhante - AD6122 |
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