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MAX2901EGI Datasheet(PDF) 4 Page - Maxim Integrated Products |
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MAX2901EGI Datasheet(HTML) 4 Page - Maxim Integrated Products |
4 / 19 page 200mW Single-Chip Transmitter ICs for 868MHz/915MHz ISM Bands 4 _______________________________________________________________________________________ AC ELECTRICAL CHARACTERISTICS (MAX290_ EV kits. VCC = +2.7V to +4.5V, RRLPF = 68k Ω, RPWRSET = 22kΩ, fRF = 917.28MHz (MAX2900/MAX2901/MAX2902) or fRF = 868MHz (MAX2903/MAX2904), VASK = VREG, fREF = 14.56MHz (MAX2900/MAX2901/MAX2902) or fREF = 13.62MHz (MAX2903/MAX2904), chip rate on MODIN = 1.22Mbps, POUT = +23dBm, TA = -40°C to +85°C. Typical values are at VCC = +4.5V, TA = +25°C, unless otherwise noted.) (Note 1) PARAMETER CONDITIONS MIN -3 σ TYP +3 σ MAX UNITS ANALOG INPUT PINS VTUNE Input Capacitance VTUNE = +1.35V 15 pF DIGITAL INPUT PINS Digital Input Pin Capacitance 3 pF VCO AND SYNTHESIZERS SECTION (MAX2900/MAX2901/MAX2902) 902 917.28 928 RFOUT Frequency Range (MAX2903/MAX2904) 867 868 870 MHz (MAX2900/MAX2901/MAX2902) 14 14.56 15 REFIN Reference Frequency Range (MAX2903/MAX2904) 13 13.78 14.5 MHz REFDIV Fixed Reference Divider Ratio (MAX2900) 4 4 4 Table 4 (MAX2900) 249 256 Main Divider Ratios (MAX2901/MAX2903) 62 63 (MAX2900) 3.5 3.64 3.75 PLL Comparison Frequency (MAX2901/MAX2903) 13 15 MHz VCO Buffer Output Power 300 Ω differential load (MAX2901–MAX2904) -12 dBm REFDIV Fixed Reference Divider Ratio (MAX2901/MAX2903) 1 1 1 VCO Phase Noise At 100kHz offset, measured at RFOUT, PLL loop BW = 5kHz -101 dBc/Hz (MAX2900/MAX2901/MAX2902) 44 65 86 VCO Tuning Gain (MAX2903/MAX2904) 85 MHz/V 5 kHz RMS VCO Frequency Pulling with OOK Modulation OOKIN clocked at 19kHz, internal (crystal) or external reference frequency 60 kHz peak PLL Phase Noise Measured at RFOUT, 5kHz offset, PLL loop BW = 50kHz -96 dBc/Hz REFOUT Voltage Swing 100 mVp-p CPOUT Charge Pump Current 500 µA Reference Spurs -62 dBc Reference Input Voltage for Nominal Operation Using an external frequency reference 200 300 mV BPSK, OOK MODULATOR, AND PA MODIN Frequency Range 1.2 8 Mb/s Modulation Filter Nominal 3dB Bandwidth 1 MHz Modulation Filter Final Attenuation Measured at 30MHz 28 41 dB Carrier Suppression 28 dB Noise Power Density At 960MHz (measured at RFOUT at +23dBm output power) -150 dBc/Hz |
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