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ADS8412 Datasheet(PDF) 3 Page - Burr-Brown (TI) |
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ADS8412 Datasheet(HTML) 3 Page - Burr-Brown (TI) |
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www.ti.com SPECIFICATIONS ADS8412 SLAS384A – JUNE 2003 – REVISED DECEMBER 2004 T A = –40°C to 85°C, +VA = 5 V, +VBD = 3 V or 5 V, Vref = 4.096 V, fSAMPLE = 2 MHz (unless otherwise noted) PARAMETER TEST CONDITIONS MIN TYP MAX UNIT ANALOG INPUT Full-scale input voltage(1) +IN – (–IN) –Vref Vref V +IN –0.2 Vref + 0.2 Absolute input voltage V –IN –0.2 Vref + 0.2 Common-mode input ADS8412I (Vref/2) – 0.2 Vref/2 (Vref/2) + 0.2 V range Input capacitance 25 pF Input leakage current 0.5 nA SYSTEM PERFORMANCE Resolution 16 Bits ADS8412I 15 No missing codes Bits ADS8412IB 16 ADS8412I –6 ±4 6 INL Integral linearity (2)(3) LSB ADS8412IB –2.5 ±1.5 2.5 ADS8412I –2 ±1 3 DNL Differential linearity LSB ADS8412IB –1 ±0.8 2 ADS8412I –3 ±1 3 EO Offset error (4) mV ADS8412IB –1.5 ±0.5 1.5 ADS8412I –0.15 0.15 EG Gain error(4)(5) %FS ADS8412IB –0.098 0.098 At dc ( ±0.2 V around V ref/2) 80 CMRR Common-mode rejection ratio dB +IN – (–IN) = 1 Vpp at 1 MHz 80 Noise 60 µV RMS At 7FFFh output code, PSRR DC Power supply rejection ratio +VA = 4.75 V to 5.25 V, 1 LSB Vref = 4.096 V (4) SAMPLING DYNAMICS Conversion time 340 400 ns Acquisition time 100 ns Throughput rate 2 MHz Aperture delay 2 ns Aperture jitter 25 ps Step response 100 ns Overvoltage recovery 100 ns DYNAMIC CHARACTERISTICS VIN = 8 Vpp at 100 kHz –95 THD Total harmonic distortion(6) dB VIN = 8 Vpp at 500 kHz –90 SNR Signal-to-noise ratio VIN = 8 Vpp at 100 kHz 90 dB SINAD Signal-to-noise + distortion VIN = 8 Vpp at 100 kHz 88 VIN = 8 Vpp at 100 kHz 95 SFDR Spurious free dynamic range dB VIN = 8 Vpp at 500 kHz 93 –3 dB Small signal bandwidth 5 MHz (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 8.192 V (5) This specification does not include the internal reference voltage error and drift. (6) Calculated on the first nine harmonics of the input frequency 3 |
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