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ADC14X250 Datasheet(PDF) 7 Page - Texas Instruments |
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ADC14X250 Datasheet(HTML) 7 Page - Texas Instruments |
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7 / 69 page  7 ADC14X250 www.ti.com SLASE49 – DECEMBER 2015 Product Folder Links: ADC14X250 Submit Documentation Feedback Copyright © 2015, Texas Instruments Incorporated (1) For more information about traditional and new thermal metrics, see the IC Package Thermal Metrics application report, SPRA953. 6.4 Thermal Information THERMAL METRIC(1) RHB (WQFN) UNIT (32 PINS) RθJA Thermal resistance, junction to ambient 31.4 °C/W RθJC(top) Thermal resistance, junction to package top 50.2 RθJC(bottom) Thermal resistance, junction to package bottom 1.1 RθJB Thermal resistance, junction to board 5.1 φJT Characterization parameter, junction to package top 0.2 φJB Characterization parameter, junction to board 5.1 6.5 Electrical Characteristics: Static Converter Performance Unless otherwise noted, these specifications apply for VA3.0 = 3 V; VA1.8 = 1.8 V; VA1.2 = 1.2 V; FCLKIN = FS = 250 MSPS; external differential resistive termination at ADC input is 66 Ω. Typical values are at TA = 25°C, unless otherwise noted. Limit values specified for the temperature range TA-MIN = –40°C to TP-MAX = 105°C. PARAMETER TEST CONDITIONS MIN TYP MAX UNIT RESOLUTION Bit resolution of ADC core 14 Bits FSR Full scale range Differential peak-to-peak 1.7 Vpp GVAR Gain variation 1-sigma variation of full scale range across multiple units ±0.05 dB VOFF Input referred voltage offset ±3 mV DNL Differential non-linearity +0.27 –0.18 LSB INL Integral non-linearity +1 –0.9 LSB 6.6 Electrical Characteristics: Dynamic Converter Performance Unless otherwise noted, these specifications apply for VA3.0 = 3 V; VA1.8 = 1.8 V; VA1.2 = 1.2 V; FCLKIN = FS = 250 MSPS; external differential resistive termination at ADC input is 66 Ω. CLKIN± input is a 2 Vp-p differential sinusoid. Typical values are at TA = 25°C, unless otherwise noted. Limit values specified for the temperature range TA-MIN = –40°C to TP-MAX = 105°C. PARAMETER TEST CONDITIONS MIN TYP MAX UNIT BW3dB 3-dB bandwidth Frequency at which the voltage input to digital output response deviates by 3 dB compared to low frequencies for a low impedance differential signal applied at the input pins. Includes 0.5-nH parasitic inductance in series with each pin of the differential analog input. 800 MHz SNR Signal-to-noise ratio, integrated across entire Nyquist bandwidth dBFS Input = 10 MHz, –3 dBFS 71.1 Input = 70 MHz, –3 dBFS 70.9 Input = 170 MHz, –3 dBFS 70.5 Input = 240 MHz, –3 dBFS 68.3 70.1 Input = 240 MHz, –40 dBFS 71.1 Input = 300 MHz, –3 dBFS 69.7 |
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