MAX1081BEUP+ Maxim Integrated Products, MAX1081BEUP+ Datasheet - Page 21
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MAX1081BEUP+
Manufacturer Part Number
MAX1081BEUP+
Description
IC ADC 10BIT 300KSPS 20-TSSOP
Manufacturer
Maxim Integrated Products
Datasheet
1.MAX1080BEUP.pdf
(24 pages)
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
8-Channel, Serial 10-Bit ADCs with Internal Reference
Aperture width (t
to disconnect the hold capacitor from the input circuit
(for instance, to turn off the sampling bridge and put
the T/H unit in hold mode).
Figure 17. QSPI Connections
Figure 18. MAX1080/MAX1081-to-TMS320 Serial Interface
TMS320LC3x
ANALOG
INPUTS
300ksps/400ksps, Single-Supply, Low-Power,
AW
CLKX
CLKR
FSR
______________________________________________________________________________________
V
DX
DR
XF
DD1
) is the time the T/H circuit requires
10
1
2
3
4
5
6
7
8
9
SHDN
CH0
CH1
CH2
CH3
CH4
CH5
CH6
CH7
COM
MAX1080
MAX1081
CS
SCLK
DIN
DOUT
SSTRB
Aperture Width
REFADJ
SSTRB
DOUT
SCLK
V
V
GND
REF
DD1
DD2
DIN
CS
MAX1080
MAX1081
14
20
19
18
17
16
15
13
12
11
4.7µF
0.1µF
0.01µF
Aperture jitter (t
the time between the samples.
Aperture delay (t
rising edge of the sampling clock and the instant when
an actual sample is taken.
For a waveform perfectly reconstructed from digital
samples, the SNR is the ratio of the full-scale analog
input (RMS value) to the RMS quantization error (resid-
ual error). The ideal, theoretical minimum analog-to-dig-
ital noise is caused only by quantization error and
results directly from the ADC’s resolution (N bits):
In reality, there are other noise sources besides quanti-
zation noise, including thermal noise, reference noise,
clock jitter, etc. Therefore, SNR is calculated by taking
the ratio of the RMS signal to the RMS noise, which
includes all spectral components minus the fundamen-
tal, the first five harmonics, and the DC offset.
10µF
+5V
+3V
OR
+5V
+3V
OR
SNR = (6.02
(POWER SUPPLIES)
SCK
PCS0
MOSI
MISO
AJ
AD
) is the sample-to-sample variation in
Signal-to-Noise Ratio (SNR)
) is the time defined between the
MC683XX
(GND)
✕
N + 1.76)dB
Aperture Delay
Aperture Jitter
21