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ADS4449IZCRT bảng dữ liệu(PDF) 7 Page - Texas Instruments |
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ADS4449IZCRT bảng dữ liệu(HTML) 7 Page - Texas Instruments |
7 / 56 page ADS4449 www.ti.com SBAS603A – APRIL 2013 – REVISED JANUARY 2016 6.5 Electrical Characteristics Typical values are at TA = 25°C, full temperature range is TMIN = –40°C to TMAX = 85°C, ADC clock frequency = 250 MHz, 50% clock duty cycle, AVDD33V = 3.3 V, AVDD = 1.9 V, DRVDD = 1.8 V, and –1-dBFS differential input, unless otherwise noted. PARAMETER TEST CONDITIONS MIN TYP MAX UNITS RESOLUTION Default resolution 14 Bits ANALOG INPUTS Differential input full-scale 2 VPP VCM Common mode input voltage 1.15 V RIN Input resistance, differential At 170-MHz input frequency 700 Ω CIN Input capacitance, differential At 170-MHz input frequency 3.3 pF with a 50- Ω source driving the ADC analog Analog input bandwidth, 3 dB 500 MHz inputs DYNAMIC ACCURACY EO Offset error Specified across devices and channels –15 15 mV As a result of internal reference inaccuracy Specified across devices and channels –5 5 EG Gain error(1) %FS alone Of channel alone Specified across channels within a device ±0.2 Channel gain error temperature coefficient(1) 0.001 Δ%/°C POWER SUPPLY(2) IAVDD33 3.3-V analog supply 51 mA IAVDD Supply current 1.9-V analog supply 350 mA IDRVDD 1.8-V digital supply 355 mA PTOTAL Total 1.47 1.6 W PDISS(standby) Power dissipation Standby 400 mW PDISS(global) Global power-down 6 52 mW DYNAMIC AC CHARACTERISTICS fIN = 40 MHz 71.1 fIN = 70 MHz 71 fIN = 140 MHz 69.5 SNR Signal-to-noise ratio fIN = 170 MHz 67.5 69 dBFS fIN = 220 MHz 68.5 fIN = 307 MHz 67.5 fIN = 350 MHz 67 fIN = 40 MHz 70.9 fIN = 70 MHz 70.8 fIN = 140 MHz 69.3 SINAD Signal-to-noise and distortion ratio fIN = 170 MHz 66.9 68.8 dBFS fIN = 220 MHz 68.3 fIN = 307 MHz 66.8 fIN = 350 MHz 66.3 fIN = 40 MHz 84 fIN = 70 MHz 87 fIN = 140 MHz 85 SFDR Spurious-free dynamic range fIN = 170 MHz 78.5 86 dBc fIN = 220 MHz 84 fIN = 307 MHz 78 fIN = 350 MHz 77 (1) There are two sources of gain error: internal reference inaccuracy and channel gain error. (2) A 185-MHz, full-scale, sine-wave input signal is applied to all four channels. Copyright © 2013–2016, Texas Instruments Incorporated Submit Documentation Feedback 7 Product Folder Links: ADS4449 |
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