MAX11253 Datasheet, PDF (36/51 Pages) Maxim Integrated Products – Longer Battery Life for Portable Applications

MAX11253
Sn = 5nV/√Hz
G=128
PGA
16-Bit, 6-Channel, 64ksps, 6.2nV/√Hz PGA,
Delta-Sigma ADC with SPI Interface
ANALOG
FILTER
DELTA-SIGMA
N
ADC
DIGITAL
FILTER
16
N
BW3
NEB1 = π/2 x BW3
BW3
NEB2 = π/2 x BW3
BW3 NEB
10nF 21k 33k
1nF 69k 108k
100pF 73k 115k
BW3 NEB
10nF 23k 36k
1nF 230k 361k
100pF 2.3M 3.6M
Figure 21. Signal Path Block Diagram Including Bandwidth of Each Stage
BW3
FDATA
NEB3
NEB3 = 0.215 x FDATA
64ksps = 13.2kHz
2.7V TO 3.6V
REF
10nF
1µF
1.7V TO 2.0V
1µF
REFN REFP
AVDD
DVDD
X7R
AIN0P
1nF
C0G
AIN0N
MAX11253
RSTB
CSB
SCLK
µC
DIN
AIN5P
1nF
C0G
AIN5N
GPO0 GPO1 GPOGND CAPP CAPN CAPREG AVSS
DOUT
RDYB
DGND
1nF
C0G
Figure 22. Application Diagram for 1.8V DVDD
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