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MAX2903EGI Datasheet(PDF) 9 Page - Maxim Integrated Products |
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MAX2903EGI Datasheet(HTML) 9 Page - Maxim Integrated Products |
9 / 19 page 200mW Single-Chip Transmitter ICs for 868MHz/915MHz ISM Bands _______________________________________________________________________________________ 9 Pin Description (continued) PIN MAX2900 MAX2901 MAX2903 MAX2902 MAX2904 NAME PIN TYPE FUNCTION 15 15 15 GND Supply Pin Ground 16, 17 16, 17 16, 17 RF-, RF+ RF Output RF differential output, open-collector type 18 — — N.C. Not Connected — — 18 — GND Supply Pin Ground — — 18 D.C. Do Not Connect — 19 — 19 N.C. Not Connected — — 19 — DIVOUT ECL Output Divider output — 20, 21 20, 21 VCO-, VCO+ Open Collector RF VCO output (differential) 20 — — D1 Digital Input Channel selection bit 1 21 — — D0 Digital Input Channel selection bit 0 22 22 22 OSC Analog Input Crystal oscillator connection. See Typical Operating Circuit. 23 23 23 REFIN Analog Voltage Input Reference input pin analog (can be used as input or as crystal oscillator driver). See Typical Operating Circuit. 24 24 — VCC4 Supply Pin Power-supply pin for the synthesizer circuits. Bypass with a 1000pF capacitor to GND as close to the part as possible. — — 24 VCC4 Supply Pin Power-supply pin for the digital circuits. Bypass with a 100pF capacitor to GND as close to the part as possible. 25 25 25 REFOUT Analog Output Buffered clock analog output pin 26 — — D2 Digital Input Channel selection bit 2 — 26 — DIV63 Digital Input Division ratio selections (division ratio = 62 when DIV63 = high; division ratio = 63 when DIV63 = low). — — 26 N.C. Not Connected — 27 27 — VCC5 Supply Pin Power-supply pin for charge pump circuits. Bypass with a 100pF capacitor to GND as close to the part as possible. — — 27 VCC5 Supply Pin Power-supply pin. Bypass with a 100pF capacitor to GND as close to the part as possible. 28 28 — CPOUT Analog Output Charge pump output pin — — 28 D.C. Do Not Connect — GROUND GROUND GROUND GROUND Electrical Ground Back side of package is connected to ground. |
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