TDA8768A Datasheet, PDF (23/32 Pages) NXP Semiconductors – 12-bit, 70 Msps Analog-to-Digital Converter (ADC)

Philips Semiconductors
TDA8768A
12-bit, 70 Msps Analog-to-Digital Converter (ADC)
Fig 25. PCB layout (power plane).
12. Support information
FCE727
12.1 Definitions
12.1.1 Non-linearities
Integral Non-Linearity (INL).: It is defined as the deviation of the transfer function
from a best fit straight line (linear regression computation). The INL of the code i is
obtained from the equation:
INL(i) = ^V-----ⁱ-ⁿ---⁽--ⁱ---⁾---^–-----^V----ⁱ-ⁿ---⁽--ⁱ---^d---^e---^a---^l--⁾-
S
where
i = 0 ⋅ (2ⁿ – 1) and
S = slope of the ideal straight line = code width; i = code value.
Differential Non-Linearity (DNL).: It is the deviation in code width from the value of
1LSB.
DNL(i) = -^V----ⁱ-ⁿ---⁽--ⁱ----⁺----¹----⁾---^–-----^V----ⁱ--ⁿ--⁽---ⁱ--⁾ – 1
S
where
i = 0 ⋅ (2ⁿ – 2)
9397 750 09656
Product data
Rev. 02 — 03 July 2002
© Koninklijke Philips Electronics N.V. 2002. All rights reserved.
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