MAX1080BEUP+ Maxim Integrated Products, MAX1080BEUP+ Datasheet - Page 21

• Manufacturer Part Number: MAX1080BEUP+
• Description: IC ADC 10BIT 400KSPS 20-TSSOP
• Manufacturer: Maxim Integrated Products

Specifications of MAX1080BEUP+

• Number Of Bits: 10
• Sampling Rate (per Second): 400k
• Data Interface: MICROWIRE™, QSPI™, Serial, SPI™
• Number Of Converters: 1
• Power Dissipation (max): 13.75mW
• 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: 400 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): 5.5 V
• Supply Voltage (min): 4.5 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