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ADS5242IPAPG4 Datasheet(PDF) 5 Page - Texas Instruments |
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ADS5242IPAPG4 Datasheet(HTML) 5 Page - Texas Instruments |
5 / 29 page www.ti.com ADS5242 SBAS330C – OCTOBER 2004 – REVISED OCTOBER 2005 ELECTRICAL CHARACTERISTICS (continued) T MIN = –40°C and TMAX = +85°C. Typical values are at TA = +25°C, clock frequency = maximum specified, 50% clock duty cycle, AVDD = 3.3V, LVDD = 3.3V, –1dBFS, I SET = 56.2kΩ, internal voltage reference, and LVDS buffer current at 3.5mA per channel, unless otherwise noted. All values are applicable after the device has been reset. ADS5242 PARAMETER TEST CONDITIONS MIN TYP MAX UNITS ANALOG INPUT Differential Input Capacitance 4.0 pF Analog Input Common-Mode Range VCM ± 50 mV Differential Input Voltage Range Internal Reference 2.03 VPP External Reference 2.03 × (VREF T – VREFB) VPP Voltage Overload Recovery Time(7) 3.0 CLK Cycles –3dBFS, 25 Ω Series Input Bandwidth 300 MHz Resistances DIGITAL DATA INPUTS VIH High-Level Input Voltage 2.2 V VIL Low-Level Input Voltage 0.6 V CIN Input Capacitance 3.0 pF DIGITAL DATA OUTPUTS Data Format Straight Offset Binary Data Bit Rate 240 780 Mbps SERIAL INTERFACE SCLK Serial Clock Input Frequency 20 MHz (7) A differential ON/OFF pulse is applied to the ADC input. The differential amplitude of the pulse in its ON (high) state is twice the full-scale range of the ADC, while the differential amplitude of the pulse in its OFF (low) state is zero. The overload recovery time of the ADC is measured as the time required by the ADC output code to settle within 1% of full-scale, as measured from its mid-code value when the pulse is switched from ON (high) to OFF (low). REFERENCE SELECTION MODE INT/EXT DESCRIPTION Internal Reference; FSR = 2.03VPP 1 Default with internal pull-up. Internal reference is powered down. The common-mode voltage External Reference; FSR = 2.03 × (VREF T – VREFB) 0 of the external reference should be within 50mV of VCM. VCM is derived from the internal bandgap voltage. 5 |
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