MAX1303BEUP+ Maxim Integrated Products, MAX1303BEUP+ Datasheet - Page 29

• Manufacturer Part Number: MAX1303BEUP+
• Description: ADC Single SAR 115KSPS 16-Bit Serial 20-Pin TSSOP
• Manufacturer: Maxim Integrated Products

Specifications of MAX1303BEUP+

• Package: 20TSSOP
• Resolution: 16 Bit
• Sampling Rate: 115 KSPS
• Architecture: SAR
• Number Of Adcs: 1
• Number Of Analog Inputs: 4|2
• Digital Interface Type: Serial (SPI, QSPI, Microwire)
• Input Type: Voltage
• Signal To Noise Ratio: 90(Typ) dB
• Polarity Of Input Voltage: Unipolar|Bipolar

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 MAX1302/MAX1303, 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 16-Bit ADCs
Multirange Inputs,
13
15
10
TRACK
14
16
11
t
AD
t
AJ
SAMPLE INSTANT
15
12
HOLD
29