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ADS4249IRGCT Datasheet(PDF) 5 Page - Texas Instruments |
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ADS4249IRGCT Datasheet(HTML) 5 Page - Texas Instruments |
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5 / 67 page  ADS4249 www.ti.com SBAS534B – JULY 2011 – REVISED SEPTEMBER 2011 ELECTRICAL CHARACTERISTICS: ADS4249 Typical values are at +25 °C, AVDD = 1.8 V, DRVDD = 1.8 V, 50% clock duty cycle, –1 dBFS differential analog input, LVDS interface, and 0-dB gain, unless otherwise noted. Minimum and maximum values are across the full temperature range: TMIN = –40°C to TMAX = +85°C, AVDD = 1.8 V, and DRVDD = 1.8 V. ADS4249 (250 MSPS) PARAMETER TEST CONDITIONS MIN TYP MAX UNIT Resolution 14 Bits fIN = 20 MHz 72.8 dBFS fIN = 70 MHz 72.5 dBFS Signal-to-noise ratio SNR fIN = 100 MHz 72.2 dBFS fIN = 170 MHz 67.5 71.7 dBFS fIN = 300 MHz 69.4 dBFS fIN = 20 MHz 72 dBFS fIN = 70 MHz 71.6 dBFS Signal-to-noise and SINAD fIN = 100 MHz 71.6 dBFS distortion ratio fIN = 170 MHz 66.5 70.7 dBFS fIN = 300 MHz 68.7 dBFS fIN = 20 MHz 80 dBc fIN = 70 MHz 79 dBc Spurious-free dynamic SFDR fIN = 100 MHz 82 dBc range fIN = 170 MHz 71 80 dBc fIN = 300 MHz 76 dBc fIN = 20 MHz 78 dBc fIN = 70 MHz 77 dBc Total harmonic distortion THD fIN = 100 MHz 79 dBc fIN = 170 MHz 69 76 dBc fIN = 300 MHz 75 dBc fIN = 20 MHz 80 dBc fIN = 70 MHz 79 dBc Second-harmonic HD2 fIN = 100 MHz 81 dBc distortion fIN = 170 MHz 71 80 dBc fIN = 300 MHz 76 dBc fIN = 20 MHz 85 dBc fIN = 70 MHz 87 dBc Third-harmonic distortion HD3 fIN = 100 MHz 96 dBc fIN = 170 MHz 71 80 dBc fIN = 300 MHz 84 dBc fIN = 20 MHz 92 dBc fIN = 70 MHz 95 dBc Worst spur fIN = 100 MHz 94 dBc (other than second and third harmonics) fIN = 170 MHz 77 88 dBc fIN = 300 MHz 85 dBc f1 = 46 MHz, f2 = 50 MHz, 95 dBFS each tone at –7 dBFS Two-tone intermodulation IMD distortion f1 = 185 MHz, f2 = 190 MHz, 82 dBFS each tone at –7 dBFS 20-MHz full-scale signal on channel under observation; Crosstalk 95 dB 170-MHz full-scale signal on other channel Recovery to within 1% Input overload recovery 1 Clock cycle (of full-scale) for 6 dB overload with sine-wave input AC power-supply rejection PSRR For 50-mVPP signal on AVDD supply, up to 10 MHz 30 dB ratio Effective number of bits ENOB fIN = 170 MHz 11.45 LSBs Differential nonlinearity DNL fIN = 170 MHz –0.95 ±0.5 1.7 LSBs Integrated nonlinearity INL fIN = 170 MHz ±2 ±4.5 LSBs Copyright © 2011, Texas Instruments Incorporated Submit Documentation Feedback 5 Product Folder Link(s): ADS4249 |
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