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AFE5801 Datasheet(PDF) 6 Page - Texas Instruments |
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AFE5801 Datasheet(HTML) 6 Page - Texas Instruments |
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6 / 46 page  AFE5801 SLOS591D – SEPTEMBER 2008 – REVISED MAY 2010 www.ti.com ELECTRICAL CHARACTERISTICS (continued) Typical values are at 25°C, MIN and MAX values are across the full temperature range of Tmin = –40°C to Tmax = 85°C, AVDD3 = 3.3V, AVDD18 = 1.8V, DVDD18 = 1.8V, –1dBFS analog input ac-coupled with 0.1mF, internal reference mode, maximum-rated sampling frequency (65MSPS), LVCMOS (single-ended) clock, 50% duty cycle, antialiasing filter set at 14MHz (3dB corner), output clamp disabled (1) and analog high-pass filter enabled, unless otherwise noted. PARAMETER TEST CONDITIONS MIN TYP MAX UNIT FULL-CHANNEL CHARACTERISTICS Gain matching Across channels and parts 0.1 0.6 dB –5dB to 28dB gain –1.2 ±0.3 1.2 Gain error dB Gain > 28dB –1.8 ±0.5 1.8 Offset error 31dB gain –50 50 LSB 5MHz, 31dB VGA gain, low-noise mode 5 6.5 nV/ √Hz Input-referred noise voltage 5MHz, 31dB VGA gain, default noise mode 5.5 nV/ √Hz SNR Signal-to-noise ratio –1dBFS ADC input, 6dB gain 66 dBc HD2 –1dBFS ADC input, 17dB gain, fin = 2MHz –75 –60 Second-harmonic distortion dBc –1dBFS ADC input, 31dB gain, fin = 2MHz –75 –60 –1dBFS ADC input, 17dB gain, fin = 2MHz –65 –55 HD3 Third-harmonic distortion dBc –1dBFS ADC input, 31dB gain, fin = 2MHz –60 –52 SFDR Spurious-free dynamic range –1dBFS ADC input, 17dB gain, fin = 2MHz 65 dBc THD Total harmonic distortion –1dBFS ADC input, 17dB gain, fin = 2MHz 64 dBc IMD Intermodulation distortion fin1 = 1MHz, fin2 = 2MHz, Ain1, in2 = –7dBFS, 30dB –70 dBFS VGA gain Group delay variation f = 100kHz to 14MHz, across gain settings and ±3.5 ns channels f = 100kHz to 14MHz, across channels ±1.5 Clock Input overload recovery ≤ 6dB overload to within 1% 1 cycle Clamp level After amplification. Clamp enabled by default 3 dB ADC number of bits 12 Aggressor: fin = 3MHz, 1dB below ADC full-scale Crosstalk Victims (channel next to aggressor channel): 50 Ω 92 dB differential (between INiP and INiM) POWER Default noise mode 522 600 Total power dissipation mW Low-noise mode 561 636 IAVDD3 AVDD3 current consumption 6 9 mA IAVDD18 AVDD18 current consumption Default noise mode 198 222 mA Low-noise mode 220 244 IDVDD18 DVDD18 current consumption See (2) 81 100 mA Standby mode 64 mW Power down Full power-down mode 8 25 mW AC PSRR Power-supply rejection ratio 30 dBc (2) Using digital modes like averaging, digital gain, digital HPF, etc., (see the Application Information section) might increase the DVDD18 current by about 60mA. 6 Submit Documentation Feedback Copyright © 2008–2010, Texas Instruments Incorporated Product Folder Link(s): AFE5801 |
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