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ADS8406IPFBTG4 Datasheet(PDF) 3 Page - Texas Instruments |
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ADS8406IPFBTG4 Datasheet(HTML) 3 Page - Texas Instruments |
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3 / 29 page  www.ti.com SPECIFICATIONS ADS8406 SLAS426A – AUGUST 2004 – REVISED DECEMBER 2004 T A = –40°C to 85°C, +VA = 5 V, +VBD = 3 V or 5 V, Vref = 4.096 V, fSAMPLE = 1.25 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 Input capacitance 25 pF Input leakage current 0.5 nA SYSTEM PERFORMANCE Resolution 16 Bits ADS8406I 15 No missing codes Bits ADS8406IB 16 ADS8406I –4 ±2 4 INL Integral linearity (2)(3) LSB ADS8406IB –2 ±1 2 ADS8406I –2 ±1 2 DNL Differential linearity LSB ADS8406IB –1 ±0.5 1.25 ADS8406I –2.5 ±1 2.5 mV EO Offset error(4) ADS8406IB –1.5 ±0.5 1.5 mV ADS8406I –0.12 0.12 EG Gain error(4)(5) %FS ADS8406IB –0.098 0.098 At dc (0.2 V around Vref/2) 80 CMRR Common mode rejection ratio dB +IN – (–IN) = 1 Vpp at 1 MHz 80 At 7FFFh output code, +VA PSRR DC Power supply rejection ratio = 4.75 V to 5.25 V, Vref = 2 LSB 4.096 V (4) SAMPLING DYNAMICS Conversion time 500 650 ns Acquisition time 150 ns Throughput rate 1.25 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 dB VIN = 8 Vpp at 100 kHz 95 SFDR Spurious free dynamic range dB VIN = 8 Vpp at 500 kHz 93 -3dB Small signal bandwidth 5 MHz EXTERNAL VOLTAGE REFERENCE INPUT Reference voltage at REFIN, Vref 2.5 4.096 4.2 V Reference resistance (7) 500 k Ω (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 (7) Can vary ±20% 3 |
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