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XR2206CP Datasheet(PDF) 5 Page - Exar Corporation |
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XR2206CP Datasheet(HTML) 5 Page - Exar Corporation |
5 / 16 page XR-2206 5 Rev. 1.03 DC ELECTRICAL CHARACTERISTICS (CONT’D) XR-2206M/P XR-2206CP/D Parameters Min. Typ. Max. Min. Typ. Max. Units Conditions Amplitude Modulation Input Impedance 50 100 50 100 k W Modulation Range 100 100 % Carrier Suppression 55 55 dB Linearity 2 2 % For 95% modulation Square-Wave Output Amplitude 12 12 Vp-p Measured at Pin 11. Rise Time 250 250 ns CL = 10pF Fall Time 50 50 ns CL = 10pF Saturation Voltage 0.2 0.4 0.2 0.6 V IL = 2mA Leakage Current 0.1 20 0.1 100 mA VCC = 26V FSK Keying Level (Pin 9) 0.8 1.4 2.4 0.8 1.4 2.4 V See section on circuit controls Reference Bypass Voltage 2.9 3.1 3.3 2.5 3 3.5 V Measured at Pin 10. Notes 1 Output amplitude is directly proportional to the resistance, R3, on Pin 3. See Figure 3. 2 For maximum amplitude stability, R3 should be a positive temperature coefficient resistor. 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 26V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Power Dissipation 750mW . . . . . . . . . . . . . . . . . . . . . . . Derate Above 25 °C 5mW/ °C . . . . . . . . . . . . . . . . . . . . . . Total Timing Current 6mA . . . . . . . . . . . . . . . . . . . . . . . . Storage Temperature -65 °C to +150°C . . . . . . . . . . . . SYSTEM DESCRIPTION The XR-2206 is comprised of four functional blocks; a voltage-controlled oscillator (VCO), an analog multiplier and sine-shaper; a unity gain buffer amplifier; and a set of current switches. The VCO produces an output frequency proportional to an input current, which is set by a resistor from the timing terminals to ground. With two timing pins, two discrete output frequencies can be independently produced for FSK generation applications by using the FSK input control pin. This input controls the current switches which select one of the timing resistor currents, and routes it to the VCO. |
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