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MAX1471 Datasheet(PDF) 4 Page - Maxim Integrated Products |
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MAX1471 Datasheet(HTML) 4 Page - Maxim Integrated Products |
4 / 26 page 315MHz/434MHz Low-Power, 3V/5V ASK/FSK Superheterodyne Receiver 4 _______________________________________________________________________________________ AC ELECTRICAL CHARACTERISTICS (continued) (Typical Application Circuit, AVDD = DVDD = HVIN = +2.4V to +3.6V, fRF = 300MHz to 450MHz, TA = -40°C to +125°C, unless otherwise noted. Typical values are at AVDD = DVDD = HVIN = +3.0V, fRF = 434 MHz, TA = +25°C, unless otherwise noted.) (Note 1) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS ANALOG BASEBAND Maximum Data Filter Bandwidth BWDF 50 kHz Maximum Data Slicer Bandwidth BWDS 100 kHz Maximum Peak Detector Bandwidth BWPD 50 kHz Manchester coded 33 Maximum Data Rate Nonreturn to zero (NRZ) 66 kbps CRYSTAL OSCILLATOR Crystal Frequency fXTAL 9.04 13.728 MHz Frequency Pulling by VDD 3 ppm/V Maximum Crystal Inductance 50 µH Crystal Load Capacitance 3pF DIGITAL INTERFACE TIMING (see Figure 8) Minimum SCLK Setup to Falling Edge of CS tSC 30 ns Minimum CS Falling Edge to SCLK Rising-Edge Setup Time tCSS 30 ns Minimum CS Idle Time tCSI 125 ns Minimum CS Period tCS 2.125 µs Maximum SCLK Falling Edge to Data Valid Delay tDO 80 ns Minimum Data Valid to SCLK Rising-Edge Setup Time tDS 30 ns Minimum Data Valid to SCLK Rising-Edge Hold Time tDH 30 ns Minimum SCLK High Pulse Width tCH 100 ns Minimum SCLK Low Pulse Width tCL 100 ns Minimum CS Rising Edge to SCLK Rising-Edge Hold Time tCSH 30 ns Maximum CS Falling Edge to Output Enable Time tDV 25 ns Maximum CS Rising Edge to Output Disable Time tTR 25 ns Note 1: Production tested at TA = +85°C. Guaranteed by design and characterization over entire temperature range. Note 2: Guaranteed by design and characterization. Not production tested. Note 3: The oscillator register (0x3) is set to the nearest integer result of fXTAL / 100kHz (see the Oscillator Frequency Register section). Note 4: Input impedance is measured at the LNAIN pin. Note that the impedance at 315MHz includes the 15nH inductive degeneration from the LNA source to ground. The impedance at 434MHz includes a 10nH inductive degeneration connected from the LNA source to ground. The equivalent input circuit is 50 Ω in series with 2.2pF. The voltage conversion gain is measured with the LNA input matching inductor, the degeneration inductor, and the LNA/mixer resonator in place, and does not include the IF fil- ter insertion loss. |
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