ADS8568 datasheet(13/62 Pages) TI2

13 / 62 page

ADS8528, ADS8548, ADS8568

www.ti.com

SBAS543C – AUGUST 2011 – REVISED FEBRUARY 2016

Product Folder Links: ADS8528 ADS8548 ADS8568

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(1)

Integral nonlinearity is defined as the maximum deviation from a straight line passing through the end-points of the ideal ADC transfer

function expressed as the number of LSBs or percentage of the specified full-scale range.

(2)

Calculated on the first nine harmonics of the input frequency.

7.6 Electrical Characteristics: ADS8528

All minimum and maximum specifications are at TA = –40°C to +125°C, specified supply voltage range, VREF = 2.5 V

(internal), VIN = ±10 V, and fDATA = max, unless otherwise noted. Typical values are at TA = 25°C, HVDD = 15 V, HVSS =

–15 V, AVDD = 5 V, and DVDD = 3.3 V.

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

SAMPLING DYNAMICS

Conversion time

Internal conversion clock

1.33

μs

fDATA

Throughput rate

Serial interface, all four SDOx active

480

kSPS

Parallel interface

650

DC ACCURACY

Resolution

Bits

No missing codes

Bits

INL

Integral linearity error(1)

–0.75

±0.2

0.75

LSB

DNL

Differential linearity error

–0.5

±0.2

0.5

LSB

Offset error

–1.5

±0.5

1.5

Offset error matching

–0.65

0.65

Offset error drift

±3.5

μV/°C

Gain error

Referenced to voltage at REFIO

–0.5%

±0.25%

0.5%

Gain error matching

Between channels of any pair

–0.2%

0.2%

Between any two channels

–0.4%

0.4%

Gain error drift

Referenced to voltage at REFIO

±6

ppm/°C

AC ACCURACY

SNR

Signal-to-noise ratio

At fIN = 10 kHz

73.9

SINAD

Signal-to-noise ratio + distortion

At fIN = 10 kHz

73.8

THD

Total harmonic distortion(2)

At fIN = 10 kHz

–89

–84

SFDR

Spurious-free dynamic range

At fIN = 10 kHz

Channel-to-channel isolation

At fIN = 10 kHz

120

–3-dB small-signal bandwidth

In 4-VREF mode

MHz

In 2-VREF mode

ADS8568 Datasheet(PDF) 13 Page - Texas Instruments

ADS8568 Datasheet(HTML) 13 Page - Texas Instruments

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