MAX11410 Datasheet, PDF (91/95 Pages) Maxim Integrated Products – 24-Bit Multi-Channel Low-Power

MAX11410
24-Bit Multi-Channel Low-Power
1.9ksps Delta-Sigma ADC with PGA
Typical Application Circuits
100nF
3.3V
AVDD
1nF
CAPP
CAPN
SHORT FOR 2-
AND 3-WIRE RTD
SHORT FOR
2-WIRE RTD
1k
1k ^AIN0/REF0P
1k ^AIN1/REF0N
1k
AIN2
1k
AIN3
1k
AIN4
1k
AIN5
1k
AIN6
AIN7
10µA-
1600µA
0.5µA,
1µA, 10µA
INPUT
MULTIPLEXER
PGA
AIN8
1k
1k
RREF
4k
AIN9
REF1P
REF1N
BIAS
VOLTAGE
0.5µA,
1µA, 10µA
GND
REF0P
REF0N
REFERENCE
MULTIPLEXER
REF2P
REF2N
GND
A. Two-RTD Temperature Measurement Circuit
3.3V
VDDIO
MAX11410
100nF
CLOCK
GENERATOR
GPIO0/
EXT_CLK
3^RD-ORDER DELTA-
SIGMA MODULATOR
DIGITAL
FILTERS
(FIR & SINC)
DIGITAL
CONTROL
LOGIC
GPIO1
CS#
SCLK
DIN
1.8V
REGULATOR
AGND
DOUT/
INT#
3.3V
VDDREG
CAPREG
100nF
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