MAX11202 Datasheet, PDF (8/14 Pages) Maxim Integrated Products – 24-Bit, Single-Channel, Ultra-Low-Power, Delta Sigma ADC with 2-Wire Serial Interface

24-Bit, Single-Channel, Ultra-Low-Power, Delta
Sigma ADC with 2-Wire Serial Interface
Functional Diagram
AVDD
DVDD
GND
AINP
AINN
REFP
REFN
TIMING
CLOCK GENERATOR
CLK
3RD-ORDER
DELTA-SIGMA
MODULATOR
DIGITAL FILTER
(SINC4)
DIGITAL LOGIC
AND SERIAL-
INTERFACE
CONTROLLER
SCLK
RDY/DOUT
MAX11202
TOP VIEW
+
GND 1
REFP 2
REFN 3
MAX11202
AINN 4
AINP 5
10 CLK
9 SCLK
8 RDY/DOUT
7 DVDD
6 AVDD
µMAX
Pin Configuration
Pin Description
PIN
NAME
FUNCTION
1
GND Ground. Ground reference for analog and digital circuitry.
2
REFP
Differential Reference Positive Input. REFP must be more positive than REFN. Connect REFP to a
voltage between AVDD and GND.
3
REFN
Differential Reference Negative Input. REFN must be more negative than REFP. Connect REFN to a
voltage between AVDD and GND.
4
AINN Negative Fully Differential Analog Input
5
AINP Positive Fully Differential Analog Input
6
AVDD Analog Supply Voltage. Connect a supply voltage between +2.7V to +3.6V with respect to GND.
7
DVDD
Digital Supply Voltage. Connect a digital supply voltage between +1.7V to +3.6V with respect to
GND.
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