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MAS9180 数据表(PDF) 9 Page - Micro Analog systems |
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MAS9180 数据表(HTML) 9 Page - Micro Analog systems |
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9 / 15 page ![]() 9 (15) DA9180.004 15 September, 2005 MAS9180 SAMPLES IN SBDIL 20 PACKAGE Top Marking Definitions: YYWW = Year Week XXXXX.X = Lot Number z=Sample Version Number NC 1 VDD 2 NC 3 QOP 4 QOM 5 NC 6 QI 7 AGC 8 NC 9 OUT 10 20 VSS 19 NC 18 RFIM 17 RFIP 16 NC 15 NC 14 PDN 13 AON 12 DEC 11 NC PIN DESCRIPTION Pin Name Pin Type Function Note NC 1 VDD 2 P Positive Power Supply NC 3 QOP 4 AO Positive Quartz Filter Output for Crystal QOM 5 Negative Quartz Filter Output for External Compensation Capacitor or Second Crystal 5 NC 6 1 QI 7 AI Quartz Filter Input for Crystal and External Compensation Capacitor AGC 8 AO AGC Capacitor NC 9 OUT 10 DO Receiver Output 2 NC 11 DEC 12 AO Demodulator Capacitor AON 13 DI AGC On Control 3 PDN 14 DI Power Down Input 4 NC 15 NC 16 RFIP 17 AI Positive Receiver Input 6 RFIM 18 AI Negative Receiver Input 6 NC 19 VSS 20 G Power Supply Ground A = Analog, D = Digital, P = Power, G = Ground, I = Input, O = Output, NC = Not Connected Notes: 1) Pin 6 between QOM and QI must be connected to VSS to eliminate DIL package leadframe parasitic capacitances disturbing the crystal filter performance. All other NC (Not Connected) pins are also recommended to be connected to VSS to minimize noise coupling. 2) OUT = VSS when carrier amplitude at maximum; OUT = VDD when carrier amplitude is reduced (modulated) - the output is a current source/sink with |IOUT| > 5 µA - at power down the output is pulled to VSS (pull down switch) 3) AON = VSS means AGC off (hold current gain level); AON = VDD means AGC on (working) - Internal pull-up with current < 1 µA which is switched off at power down 4) PDN = VSS means receiver on; PDN = VDD means receiver off - Fast start-up is triggered when the receiver is after power down (PDN=VDD) controlled to power up (PDN=VSS) i.e. at the falling edge of PDN signal. 5) External crystal compensation capacitor pin QOM is connected only in MAS9190A5 and AF versions. It is left unconnected in MAS9180A1 and AB..E versions which have internal compensation capacitor. 6) Differential input versions A1..A5 have 600 k Ω biasing MOSFET-transistors towards ground from both receiver inputs RFIP and RFIM. Asymmetric input versions AB..AF have input pin RFIM unconnected. |
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