MAX7058 MAXIM [Maxim Integrated Products], MAX7058 Datasheet

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... A 15MHz crystal is used as the reference for 315MHz and 390MHz operation by selecting synthe- sizer-divide ratios of 21 and 26, respectively. The MAX7058 is available in a 4mm x 4mm, 24-pin thin QFN package and is specified to operate in the -40°C to +125°C automotive temperature range. Garage Door Openers ...

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Dual-Frequency ASK Transmitter ABSOLUTE MAXIMUM RATINGS Supply Voltage, AVDD, DVDD, PAVDD to GND (Exposed Paddle) ...................................………..……………-0.3V to +4V All Other Pins ………..…Exposed Paddle - 0.3V to (VDD + 0.3V) Continuous Power Dissipation (T = +70°C) A 24-Pin TQFN (derate ...

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AC ELECTRICAL CHARACTERISTICS ( Typical Operating Circuit , 50Ω system impedance, AVDD = DVDD = PAVDD = +2.1V to +3.6V, f -40°C to +125°C, unless otherwise noted. Typical values are at AVDD = DVDD = PAVDD = +2.7V, T noted. ...

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Dual-Frequency ASK Transmitter AC ELECTRICAL CHARACTERISTICS (continued) ( Typical Operating Circuit , 50Ω system impedance, AVDD = DVDD = PAVDD = +2.1V to +3.6V, f -40°C to +125°C, unless otherwise noted. Typical values are at AVDD = DVDD = ...

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A SUPPLY CURRENT vs. SUPPLY VOLTAGE 315MHz +85°C and +125° +25° -40° ...

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Dual-Frequency ASK Transmitter (T = +25°C, unless otherwise noted.) A REFERENCE SPUR MAGNITUDE vs. SUPPLY VOLTAGE -45.5 -46.0 -46.5 390MHz -47.0 -47.5 -48.0 -48.5 -49.0 -49.5 315MHz -50.0 2.1 2.6 3.1 SUPPLY VOLTAGE (V) EFFICIENCY vs. SUPPLY VOLTAGE 40 ...

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... DIN Description section.) 23 N.C. No connection. Must remain unconnected. Exposed Paddle. Internally connected to ground (the only ground for the MAX7058.) Requires low- — EP (GND) inductance path (e.g., one or more vias) to solid ground plane. Solder evenly to the board’s ground plane for proper operation. ...

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... TOGGLE/FSEL operating mode. In the ENABLE method, setting ENABLE to a logic-high Dual Frequency state enables the MAX7058 and setting logic-low state disables the MAX7058. To avoid conflict with the auto-power-up method, DIN must be set to a logic-low state before ENABLE is set to a logic-low state, and remains low until after ENABLE is set to a logic- high state ...

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... Dual-Frequency Operating Mode CASE 1: DIN PIN ONLY USED TO POWER UP THE MAX7058 DIN ENABLE POWER-UP (INTERNAL) CASE 2: ENABLE PIN ONLY USED TO POWER UP THE MAX7058 DIN ENABLE POWER-UP (INTERNAL) Figure 1. Power-Up Waveform with DIN/ENABLE for MAX7058 When the output-matching network is properly tuned, the PA transmits +10dBm (typ), with a high overall effi- ciency ...

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... XTAL1 and XTAL2. In most cases, this corresponds to an 8pF load capacitance applied to the external crystal when typical PCB parasitics are added. The MAX7058 is designed to operate with a typical 10pF load capacitance crystal very important to use a crystal with a load capacitance equal to the capacitance of the MAX7058 crystal oscillator plus PCB parasitics ...

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... Applications Information Output Matching to 50 Ω When matched to a 50Ω system, the MAX7058’ capable of delivering +10dBm of output power +2.7V. The output of the open-drain transis- tor, which has internal selectable shunt tuning capaci- tors for impedance matching (see the Variable Capacitor section) ...

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... RFOUT C3 C2 10pF 10pF 18nH C5 680pF 220pF 0.01μF 12 ______________________________________________________________________________________ 5 4 CAP2 CAP1 8 CAP3 9 CAP4 10 PAOUT MAX7058 L2 R1 0Ω 11 ROUT EXPOSED PADDLE C4 220pF 14 PAVDD AVDD XTAL2 C10 100pF C9 C8 0.01μF 0.1μF Typical Operating Circuit CAP4 CAP3 CAP2 CAP1 ...

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For the latest package outline information go to www.maxim-ic.com/packages.) ______________________________________________________________________________________ 315MHz/390MHz Dual-Frequency ASK Transmitter Package Information 13 ...

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Dual-Frequency ASK Transmitter (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information go to www.maxim-ic.com/packages.) Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely ...