MAX1027 Maxim Integrated Products, MAX1027 Datasheet - Page 21

• Manufacturer Part Number: MAX1027
• Description: MAX1027, MAX1029, MAX1031 10-Bit 300ksps ADCs With Fifo, Temp Sensor, Internal Reference
• Manufacturer: Maxim Integrated Products

Effective number of bits (ENOB) indicates the global
accuracy of an ADC at a specific input frequency and
sampling rate. An ideal ADC error consists of quantiza-
tion noise only. With an input range equal to the full-
scale range of the ADC, calculate the effective number
of bits as follows:
Total harmonic distortion (THD) is the ratio of the RMS
sum of the first five harmonics of the input signal to the
fundamental itself. This is expressed as:
where V1 is the fundamental amplitude, and V2–V5 are
the amplitudes of the first five harmonics.
Spurious-free dynamic range (SFDR) is the ratio of the
RMS amplitude of the fundamental (maximum signal
component) to the RMS value of the next-largest distor-
tion component.
TOP VIEW
THD
=
20 x log
ENOB = (SINAD - 1.76) / 6.02
AIN10
AIN11
AIN0
AIN1
AIN2
AIN3
AIN4
AIN5
AIN6
AIN7
AIN8
AIN9
Spurious-Free Dynamic Range
______________________________________________________________________________________
10
11
12



1
2
3
4
5
6
7
8
9
Total Harmonic Distortion
(
V
Effective Number of Bits
2
MAX1031
2
QSOP
+
V
3
2
+
24
23
22
21
20
19
18
17
16
15
14
13
V
Temp Sensor, Internal Reference
4
2
EOC
DOUT
DIN
CS
SCLK
V
GND
REF+
CNVST/AIN15
REF-/AIN14
AIN13
AIN12
10-Bit 300ksps ADCs with FIFO,
DD
+
V
5
2
)
/ V
1



TRANSISTOR COUNT: 30,889
PROCESS: BiCMOS
*Future product—contact factory for availability.
**EP = Exposed paddle (connect to GND).
MAX1027BCEE-T
MAX1027BEEE-T
MAX1029ACEP-T*
MAX1029AEEP-T*
MAX1029BCEP-T
MAX1029BEEP-T
MAX1031ACEG-T*
MAX1031AEEG-T*
MAX1031BCEG-T
MAX1031BEEG-T
MAX1031BCGI-T*
MAX1031BEGI-T*
AIN3
AIN4
AIN5
AIN6
AIN7
AIN8
N.C.
Ordering Information (continued)
PART
1
2
3
4
5
6
7
Pin Configurations (continued)
MAX1031
QFN
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
TEMP RANGE
0°C to +70°C
0°C to +70°C
0°C to +70°C
0°C to +70°C
0°C to +70°C
0°C to +70°C
Chip Information
21
20
19
18
17
16
15
PIN-PACKAGE
16 QSOP
16 QSOP
20 QSOP
20 QSOP
20 QSOP
20 QSOP
24 QSOP
24 QSOP
24 QSOP
24 QSOP
28 QFN-EP**
28 QFN-EP**
CS
SCLK
N.C.
V
N.C.
GND
REF+
DD
21