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ADS8481IRGZTG4 Datasheet(PDF) 3 Page - Burr-Brown (TI) |
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ADS8481IRGZTG4 Datasheet(HTML) 3 Page - Burr-Brown (TI) |
3 / 31 page www.ti.com SPECIFICATIONS ADS8481 SLAS385A – FEBRUARY 2006 – REVISED MARCH 2006 T A = –40°C to 85°C, +VA = 5 V, +VBD = 3 V or 5 V, Vref = 4.096 V, fSAMPLE = 1 MSPS (unless otherwise noted) PARAMETER TEST CONDITIONS MIN TYP MAX UNIT ANALOG INPUT Full-scale input voltage(1) +IN – (–IN) 0 Vref V +IN –0.2 Vref +0.2 Absolute input voltage V –IN –0.2 0.2 Input capacitance 65 pF Input leakage current 1 nA SYSTEM PERFORMANCE Resolution 18 Bits ADS8481I 18 18 No missing codes Bits ADS8481IB 18 ADS8481I –5 –1.5/+1.9 5 LSB Integral linearity(2)(3) (18 bit) ADS8481IB –3.5 –1.5/+1.9 3.5 ADS8481I –1 –0.5/+0.7 2.5 LSB Differential linearity (18 bit) ADS8481IB –1 –0.5/+0.7 1.5 ADS8481I –0.5 ±0.1 0.5 Offset error(4) mV ADS8481IB –0.5 ±0.1 0.5 Offset error temperature drift ±0.2 ppm/°C ADS8481I Vref = 4.096 V –0.075 ±0.05 0.075 %FS Gain error(4)(5) ADS8481IB Vref = 4.096 V –0.075 ±0.05 0.075 %FS Gain error temperature drift ±0.6 ppm/°C Noise 30 µV RMS Power supply rejection ratio At 3FFFFh output code 60 dB SAMPLING DYNAMICS Conversion time 650 710 ns Acquisition time 250 ns Throughput rate 1 MHz Aperture delay 4 ns Aperture jitter 5 ps Step response 150 ns Over voltage recovery 150 ns (1) Ideal input span, does not include gain or offset error. (2) LSB means least significant bit (3) This is endpoint INL, not best fit. (4) Measured relative to an ideal full-scale input [+IN – (–IN)] of 4.096 V (5) This specification does not include the internal reference voltage error and drift. 3 Submit Documentation Feedback |
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