MAX11202AEUB+T Maxim Integrated, MAX11202AEUB+T Datasheet

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MAX11202AEUB+T

Manufacturer Part Number
MAX11202AEUB+T
Description
Analog to Digital Converters - ADC 24-Bit Delta-Sigma
Manufacturer
Maxim Integrated
Datasheet
µMAX is a registered trademark of Maxim Integrated Products, Inc.
19-5237; Rev 0; 4/10
The MAX11202 is an ultra-low-power (< 300FA max
active current), high-resolution, serial output ADC. This
device provides the highest resolution per unit power in
the industry and is optimized for applications that require
very high dynamic range with low power such as sensors
on a 4mA to 20mA industrial control loop. The MAX11202
provides a high-accuracy internal oscillator that requires
no external components.
When used with the specified data rates, the internal digital
filter provides more than 80dB rejection of 50Hz or 60Hz
line noise. The MAX11202 provides a simple 2-wire serial
interface in the space-saving, 10-pin FMAX
The MAX11202 operates over the -40NC to +85NC tem-
perature range.
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.
24-Bit, Single-Channel, Ultra-Low-Power, Delta
RESOLUTION
Sensor Measurement (Temperature and
Pressure)
Portable Instrumentation
Battery Applications
Weigh Scales
(BITS)
24
20
18
16
_______________________________________________________________ Maxim Integrated Products 1
Sigma ADC with 2-Wire Serial Interface
General Description
4-WIRE SPI, 16-PIN QSOP,
PROGRAMMABLE GAIN
MAX11210
MAX11206
MAX11209
MAX11213
Applications
M
package.
16-PIN QSOP
4-WIRE SPI,
MAX11200
MAX11207
MAX11211
MAX11203
Note: All devices are specified over the -40NC to +85NC oper-
ating temperature range.
+Denotes a lead(Pb)-free/RoHS-compliant package.
S 24-Bit Full-Scale Resolution
S 720nV
S 3ppm INL
S No Missing Codes
S Ultra-Low Power Dissipation
S 2.7V to 3.6V Analog Supply Voltage Range
S 1.7V to 3.6V Digital and I/O Supply Voltage Range
S Fully Differential Signal Inputs
S Fully Differential Reference Inputs
S Internal System Clock
S External Clock
S Serial 2-Wire Interface (Clock Input and Data Output)
S On-Demand Offset and Gain Self-Calibration
S -40°C to +85°C Operating Temperature Range
S ±2kV ESD Protection
S Lead(Pb)-Free and RoHS-Compliant µMAX Package
MAX11202AEUB+
MAX11202BEUB+
20.5-Bit Noise-Free Resolution at 13.75sps
19-Bit Noise-Free Resolution at 120sps
Operating Mode Current Drain < 300µA (max)
Sleep Mode Current Drain < 0.1µA
2.4576MHz (MAX11202A)
2.2528MHz (MAX11202B)
PART
RMS
Noise (MAX11202B)
10 FMAX
10 FMAX
PIN-PACKAGE
Ordering Information
MAX11202 (without buffers)
MAX11201 (with buffers)
2-WIRE SERIAL,
10-PIN µMAX
MAX11208
MAX11212
MAX11205
Selector Guide
OUTPUT RATE
Features
13.75
(sps)
120

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MAX11202AEUB+T Summary of contents

Page 1

... MAX11206 18 MAX11209 16 MAX11213 µMAX is a registered trademark of Maxim Integrated Products, Inc. _______________________________________________________________ Maxim Integrated Products 1 For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com. S 24-Bit Full-Scale Resolution 20.5-Bit Noise-Free Resolution at 13.75sps 19-Bit Noise-Free Resolution at 120sps ...

Page 2

Single-Channel, Ultra-Low-Power, Delta Sigma ADC with 2-Wire Serial Interface ABSOLUTE MAXIMUM RATINGS Any Pin to GND ....................................................-0.3V to +3.9V AVDD to GND .......................................................-0.3V to +3.9V DVDD to GND ......................................................-0.3V to +3.9V Analog Inputs (AINP, AINN, REFP, REFN) to GND ...

Page 3

Single-Channel, Ultra-Low-Power, Delta Sigma ADC with 2-Wire Serial Interface ELECTRICAL CHARACTERISTICS (continued +3.6V +1.8V, V AVDD DVDD REFP are +25NC under normal conditions, unless otherwise noted.) A PARAMETER SYMBOL AIN Input Capacitance ...

Page 4

Single-Channel, Ultra-Low-Power, Delta Sigma ADC with 2-Wire Serial Interface ELECTRICAL CHARACTERISTICS (continued +3.6V +1.8V, V AVDD DVDD REFP are +25NC under normal conditions, unless otherwise noted.) A PARAMETER SYMBOL SCLK Rising Edge ...

Page 5

Single-Channel, Ultra-Low-Power, Delta Sigma ADC with 2-Wire Serial Interface (V = 3.6V 1.8V AVDD DVDD REFP are +25NC.) A ANALOG ACTIVE CURRENT vs. AVDD VOLTAGE (MAX11202A) 240 V = 1.8V DVDD ...

Page 6

Single-Channel, Ultra-Low-Power, Delta Sigma ADC with 2-Wire Serial Interface (V = 3.6V 1.8V AVDD DVDD REFP are +25NC.) A INTERNAL OSCILLATOR FREQUENCY vs. AVDD VOLTAGE 2 1.8V DVDD 2.5 ...

Page 7

Single-Channel, Ultra-Low-Power, Delta Sigma ADC with 2-Wire Serial Interface (V = 3.6V 1.8V AVDD DVDD REFP are +25NC.) A INTEGRAL NONLINEARITY vs. INPUT VOLTAGE (MAX11202A/MAX11202B 3.0V AVDD 8 ...

Page 8

Single-Channel, Ultra-Low-Power, Delta Sigma ADC with 2-Wire Serial Interface AVDD DVDD GND AINP AINN DELTA-SIGMA REFP REFN TOP VIEW PIN NAME 1 GND Ground. Ground reference for analog and digital circuitry. Differential Reference Positive Input. REFP must be more ...

Page 9

Single-Channel, Ultra-Low-Power, Delta Sigma ADC with 2-Wire Serial Interface Data Ready Output/Serial Data Output. This output serves a dual function. In addition to the serial 8 data output function, the RDY/DOUT also indicates that the data is ready when ...

Page 10

Single-Channel, Ultra-Low-Power, Delta Sigma ADC with 2-Wire Serial Interface The MAX11202 is compatible with the 2-wire interface and uses SCLK and RDY/DOUT for serial communica- tions. In this mode, all controls are implemented by tim- ing the high or ...

Page 11

Single-Channel, Ultra-Low-Power, Delta Sigma ADC with 2-Wire Serial Interface SCLK RDY/DOUT D23 D22 CONVERSION IS DONE DATA IS AVAILABLE Figure 1. Timing Diagram for Data Read After Conversion SCLK 1 2 ...

Page 12

Single-Channel, Ultra-Low-Power, Delta Sigma ADC with 2-Wire Serial Interface 1 2 SCLK RDY/DOUT D22 D23 CONVERSION IS DONE DATA IS AVAILABLE Figure 4. Timing Diagram for Data Read Followed by Sleep Mode Activation; Single Conversion ...

Page 13

Single-Channel, Ultra-Low-Power, Delta Sigma ADC with 2-Wire Serial Interface Applications Information See Figure 6 for the RTD temperature measurement circuit and Figure 7 for a resistive bridge measurement circuit REF1 REF2 I REF2 REFP ...

Page 14

... Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time. Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 14 2010 Maxim Integrated Products © ...

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