adc1206s040 NXP Semiconductors, adc1206s040 Datasheet - Page 26
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adc1206s040
Manufacturer Part Number
adc1206s040
Description
Single 12 Bits Adc, Up To 40 Mhz, 55 Mhz Or 70 Mhz
Manufacturer
NXP Semiconductors
Datasheet
1.ADC1206S040.pdf
(32 pages)
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NXP Semiconductors
ADC1206S040_055_070_2
Product data sheet
Fig 26. Spectrum of full-scale input sine wave with frequency f
magnitude
13.1.2 Differential Non-Linearity (DNL).
13.2.1 Signal-to-noise and distortion (SINAD)
13.2.2 Effective Number Of Bits (ENOB)
13.2 Dynamic parameters (single tone)
S = slope of the ideal straight line = code width; i = code value.
It is the deviation in code width from the value of 1 LSB.
where
Figure 26
to coherent sampling (f
samples, M and N being relatively prime), and digitized by the ADC under test.
Remark: in the following equations, P
effects of random noise, non-linearities, sampling time errors, and “quantization noise”.
The ratio of the output signal power to the noise-plus-distortion power for a given sample
rate and input frequency, excluding the DC component:
It is derived from SINAD and gives the theoretical resolution an ideal ADC would require
to obtain the same SINAD measured on the real ADC. A good approximation gives:
SINAD db
ENOB
i
=
a
=
1
shows the spectrum of a full-scale input sine wave with frequency f
SINAD dB
0
=
2
10
n
–
log
2
----------------------------------------- -
P
Rev. 02 — 12 August 2008
t/
noise
–
f
s
s
1 76
= M/N, where M is the number of cycles and N is number of
P
signal
+
distortion
a
2
Single 12 bits ADC, up to 40 MHz, 55 MHz or 70 MHz
6 02
SFDR
noise
t
.
ADC1206S040/055/070
is the power of the terms which include the
a
3
DNL i
measured output range
=
V
-------------------------------------------- - 1
in
© NXP B.V. 2008. All rights reserved.
i
a
k
+
1
S
t
, conforming
014aaa389
–
V
in
fs/2
26 of 32
i
–