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XR-2212CP Datasheet(PDF) 4 Page - Exar Corporation |
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XR-2212CP Datasheet(HTML) 4 Page - Exar Corporation |
4 / 20 page XR-2212 4 Rev. 2.10 ELECTRICAL CHARACTERISTICS (CONT’D) Parameter XR-2212M XR-2212CP Units Conditions Parameter Min. Typ. Max. Min. Typ. Max. Units Conditions Input Preamp Section Measured at Pin 2 Input Impedance 20 20 k W Input Signal to Cause Limiting 2 10 2 mV rms Op Amp Section Voltage Gain 55 70 55 70 dB RL = 5.1kW, RF = R Input Bias Current 0.1 1 0.1 1 mA Offset Voltage +5 +20 +5 +20 mV Slew Rate 2 2 V/ msec Internal Reference Measured at Pin 11 Voltage Level 4.9 5.3 5.7 4.75 5.3 5.85 V Output Impedance 100 100 W AC Small Signal Maximum Source Current 80 80 WA Note Bold face parameters are covered by production test and guaranteed over operating temperature range. Specifications are subject to change without notice ABSOLUTE MAXIMUM RATINGS Power Supply 18V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Input Signal Level 3V rms . . . . . . . . . . . . . . . . . . . . . . . . Power Dissipation: Ceramic Package: 750mW . . . . . . . . . . . . . . . . . . . . . . . Derate Above TA = + 25°C 6mW/ °C . . . . . . . . Plastic Package: 625mW . . . . . . . . . . . . . . . . . . . . . . . . Derate Above TA = + 25°C 5mW/ °C . . . . . . . . SYSTEM DESCRIPTION The XR-2212 is a complete PLL system with buffered inputs and outputs, an internal reference, and an uncommitted op amp. Two VCO outputs are pinned out; one sources current, the other sources voltage. This enables operation as a frequency synthesizer using an external programmable divider. The op amp section can be used as an audio preamplifier for FM detection or as a high speed sense amplifier (comparator) for FSK demodulation. The center frequency, bandwidth, and tracking range of the PLL are controlled independently by external components. The PLL output is directly compatible with CMOS, HCMOS and TTL logic families as well as microprocessor peripheral systems. The precision PLL system operates over a supply voltage range of 4.5V to 20V, a frequency range of 0.01Hz to 300kHz, and accepts input signals in the range of 2mV to 3V rms. Temperature stability of the VCO is typically better than 20 ppm/ °C with the optimum timing resistor value. |
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