MAX1035 Maxim Integrated Products, MAX1035 Datasheet - Page 29

• Manufacturer Part Number: MAX1035
• Description: (MAX1034 / MAX1035) Serial 14-Bit ADCs
• Manufacturer: Maxim Integrated Products

ENOB indicates the global accuracy of an ADC at a
specific input frequency and sampling rate. With an
input range equal to the ADC’s full-scale range, calcu-
late the ENOB as follows:
For the MAX1034/MAX1035, THD is the ratio of the
RMS sum of the input signal’s first four harmonic com-
ponents to the fundamental itself. This is expressed as:
where V
V
harmonic components.
SFDR is the ratio of RMS amplitude of the fundamental
(maximum signal component) to the RMS value of the
next-largest spectral component.
5
THD
are the amplitudes of the 2nd- through 5th-order
Spurious-Free Dynamic Range (SFDR)
1
=
is the fundamental amplitude, and V
20
Effective Number of Bits (ENOB)
Total Harmonic Distortion (THD)
ENOB
×
log
______________________________________________________________________________________




=
8-/4-Channel, ±V
V
2



2
SINAD
+
6 02
V
3
.
2
−
V
1 76
+
1
.
V
4



2
+
2
V
5
through
2




Figure 21. Aperture Diagram
REF
TRACK AND HOLD
ANALOG INPUT
(MODE 0)
(MODE 1)
(MODE 2)
INTCLK
SCLK
SCLK
Serial 14-Bit ADCs
Multirange Inputs,
13
15
10
TRACK
14
16
11
t
AD
t
AJ
SAMPLE INSTANT
15
12
HOLD
29