MAX1157BEUI+T Maxim Integrated, MAX1157BEUI+T Datasheet - Page 13

• Manufacturer Part Number: MAX1157BEUI+T
• Description: Analog to Digital Converters - ADC 14-Bit 135ksps 4.2V Precision ADC
• Manufacturer: Maxim Integrated

Specifications of MAX1157BEUI+T

• Rohs: yes
• Number Of Channels: 1
• Architecture: SAR
• Conversion Rate: 135 KSPs
• Resolution: 14 bit
• Input Type: Single-Ended
• Snr: 85 dB
• Interface Type: Parallel
• Operating Supply Voltage: 4.75 V to 5.25 V
• Maximum Operating Temperature: + 85 C
• Package / Case: TSSOP-28
• Maximum Power Dissipation: 1026 mW
• Minimum Operating Temperature: - 40 C
• Number Of Converters: 1
• Voltage Reference: 4.096 V

In reality, there are other noise sources besides quanti-
zation noise: thermal noise, reference noise, clock jitter,
etc. SNR is computed by taking the ratio of the RMS
signal to the RMS noise, which includes all spectral
components minus the fundamental, the first five har-
monics, and the DC offset.
Signal-to-noise plus distortion (SINAD) is the ratio of the
fundamental input frequency’s RMS amplitude to the
RMS equivalent of all the other ADC output signals.
Effective number of bits (ENOB) indicates the global
accuracy of an ADC at a specific input frequency and
sampling rate. An ideal ADC’s error consists of quanti-
zation noise only. With an input range equal to the full-
scale range of the ADC, calculate the effective number
of bits as follows:
*Future product—contact factory for availability.
MAX1159AEUI*
MAX1159BEUI*
MAX1159ACUI
MAX1175ACUI
SINAD db
MAX1159BCUI
MAX1175BCUI
MAX1157AEUI
MAX1157BEUI
MAX1175AEUI
MAX1175BEUI
PART
(
)
14-Bit, 135ksps, Single-Supply ADCs with
E
Signal-to-Noise Plus Distortion
=
NOB =
20
______________________________________________________________________________________
×
log
Effective Number of Bits






SINAD - 1.76
(
-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
Noise Distortion
TEMP RANGE
0°C to +70°C
0°C to +70°C
0°C to +70°C
0°C to +70°C
6 02
.
Signal
+



RMS
)
RMS
Bipolar Analog Input Range



PIN-PACKAGE
28 TSSOP
28 TSSOP
28 TSSOP
28 TSSOP
28 TSSOP
28 TSSOP
28 TSSOP
28 TSSOP
28 TSSOP
28 TSSOP
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 V
V
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 fre-
quency component.
TRANSISTOR COUNT: 15,383
PROCESS: BiCMOS
5
Ordering Information (continued)
are the 2nd- through 5th-order harmonics.
THD =
1
is the fundamental amplitude and V
20
INPUT VOLTAGE
×
0 to +10V
0 to +10V
log
Spurious-Free Dynamic Range
RANGE
±10V
±10V
±10V
±10V
±5V
±5V
±5V
±5V









Total Harmonic Distortion
V
2
2
+ V
Chip Information
3
2
V
+ V
1
4
2
+ V
INL (LSB)
5
±1
±2
±1
±2
±1
±2
±1
±2
±1
±2
2









2
through
13