MAX1081BEUP+ Maxim Integrated Products, MAX1081BEUP+ Datasheet - Page 22

• Manufacturer Part Number: MAX1081BEUP+
• Description: IC ADC 10BIT 300KSPS 20-TSSOP
• Manufacturer: Maxim Integrated Products

Specifications of MAX1081BEUP+

• Number Of Bits: 10
• Sampling Rate (per Second): 300k
• Data Interface: MICROWIRE™, QSPI™, Serial, SPI™
• Number Of Converters: 1
• Power Dissipation (max): 8.0mW
• Voltage Supply Source: Analog and Digital
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 20-TSSOP
• Number Of Adc Inputs: 8
• Architecture: SAR
• Conversion Rate: 300 KSPs
• Resolution: 10 bit
• Input Type: Differential
• Interface Type: 4-Wire (SPI, QSPI, MICROWIRE, TMS320)
• Voltage Reference: Internal 2.5 V or External
• Supply Voltage (max): 3.6 V
• Supply Voltage (min): 2.7 V
• Maximum Power Dissipation: 559 mW
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Minimum Operating Temperature: - 40 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

300ksps/400ksps, Single-Supply, Low-Power,
8-Channel, Serial 10-Bit ADCs with Internal Reference
Figure 19. MAX1080/MAX1081-to-TMS320 Serial Interface
SINAD is the ratio of the fundamental input frequency’s
RMS amplitude to RMS equivalent of all other ADC out-
put signals:
ENOB indicates the global accuracy of an ADC at a
specific input frequency and sampling rate. An ideal
ADC’s error consists only of quantization noise. With an
input range equal to the ADC’s full-scale range, calcu-
late ENOB as follows:
THD is the ratio of the RMS sum of the input signal’s
first five harmonics to the fundamental itself. This is
expressed as:
where V
V
harmonics.
SFDR is the ratio of the RMS amplitude of the funda-
mental (maximum signal component) to the RMS value
of the next-largest distortion component.
22
5
SSTRB
DOUT
SCLK
are the amplitudes of the 2nd- through 5th-order
DIN
CS
SINAD (dB) = 20
THD 20
______________________________________________________________________________________
Signal-to-Noise Plus Distortion (SINAD)
Spurious-Free Dynamic Range (SFDR)
1
=
is the fundamental amplitude, and V
START
ENOB = (SINAD - 1.76) / 6.02
Effective Number of Bits (ENOB)
Total Harmonic Distortion (THD)
×
log
SEL2



✕
V
log (Signal
2
SEL1
2
+
V
3
SEL0
2
+
V
V
RMS
4
1
UNI/BIP SGI/DIF
2
+
/ Noise
V
4
2
+
V
RMS
2
5
2
through
PD1



)
PD0
TRANSISTOR COUNT: 4286
PROCESS: BiCMOS
MAX1080BEUP
MAX1081ACUP
MAX1081BCUP
MAX1081AEUP
MAX1081BEUP
Ordering Information (continued)
PART
ANALOG
INPUTS
0.01µF
+2.5V
4.7µF
0 TO
MSB
Typical Operating Circuit
CH0
CH7
REF
REFADJ
MAX1080
MAX1081
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
0°C to +70°C
0°C to +70°C
RANGE
B8
TEMP.
SSTRB
DOUT
SHDN
SCLK
V
V
COM
GND
DD1
DD2
DIN
CS
S1
Chip Information
V
S0
DD2
+5V OR
+3V
0.1µF
PIN-
PACKAGE
20 TSSOP
20 TSSOP
20 TSSOP
20 TSSOP
20 TSSOP
MISO (SI)
V
I/O
SCK (SK)
MOSI (SO)
DD
CPU
V
HIGH IMPEDANCE
HIGH IMPEDANCE
SS
(LSB)
±1/2
±1/2
±1
±1
±1
INL