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ADS5231IPAGT bảng dữ liệu(PDF) 3 Page - Burr-Brown (TI) |
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3 / 26 page www.ti.com RECOMMENDED OPERATING CONDITIONS ADS5231 SBAS295A – JULY 2004 – REVISED JANUARY 2007 ADS5231 MIN TYP MAX UNITS SUPPLIES AND REFERENCES Analog Supply Voltage, AVDD 3.0 3.3 3.6 V Output Driver Supply Voltage, VDRV 3.0 3.3 3.6 V REFT — External Reference Mode 1.875 2.0 2.05 V REFB — External Reference Mode 0.95 1.0 1.125 V REFCM = (REFT + REFB)/2 – External Reference Mode(1) VCM ± 50mV V Reference = (REFT – REFB) – External Reference Mode 0.75 1.0 1.1 V Analog Input Common-Mode Range(1) VCM ± 50mV V CLOCK INPUT AND OUTPUTS ADCLK Input Sample Rate PLL Enabled (default) 20 40 MSPS PLL Disabled 2 30(2) MSPS ADCLK Duty Cycle PLL Enabled (default) 45 55 MSPS Low-Level Voltage Clock Input 0.6 V High-Level Voltage Clock Input 2.2 V Operating Free-Air Temperature, TA –40 +85 °C Thermal Characteristics: θ JA 42.8 °C/W θ JC 18.7 °C/W (1) These voltages need to be set to 1.5V ± 50mV if they are derived independent of V CM. (2) When the PLL is disabled, the clock duty cycle needs to be controlled well, especially at higher speeds. A 45%–55% duty cycle variation is acceptable up to a frequency of 30MSPS. If the device needs to be operated in the PLL disabled mode beyond 30MSPS, then the duty cycle needs to be maintained within 48%–52% duty cycle. 3 Submit Documentation Feedback |
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