19-5237; Rev 0; 4/10
24-Bit, Single-Channel, Ultra-Low-Power, Delta
Sigma ADC with 2-Wire Serial Interface
General Description
Features
S 24-Bit Full-Scale Resolution
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.
20.5-Bit Noise-Free Resolution at 13.75sps
19-Bit Noise-Free Resolution at 120sps
S 720nV
Noise (MAX11202B)
RMS
S 3ppm INL
S No Missing Codes
S Ultra-Low Power Dissipation
Operating Mode Current Drain < 300µA (max)
Sleep Mode Current Drain < 0.1µA
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
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
M
interface in the space-saving, 10-pin FMAX package.
The MAX11202 operates over the -40NC to +85NC tem-
perature range.
S Fully Differential Reference Inputs
S Internal System Clock
2.4576MHz (MAX11202A)
2.2528MHz (MAX11202B)
Applications
Sensor Measurement (Temperature and
Pressure)
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
Portable Instrumentation
Battery Applications
Weigh Scales
S
2kV ESD Protection
S Lead(PB)-Free and RoHS-Compliant µMAX Package
Ordering Information
OUTPUT RATE
PART
PIN-PACKAGE
(sps)
MAX11202AEUB+
MAX11202BEUB+
10 FMAX
10 FMAX
120
13.75
Note: All devices are specified over the -40NC to +85NC oper-
ating temperature range.
+Denotes a lead(Pb)-free/RoHS-compliant package.
Selector Guide
RESOLUTION
(BITS)
4-WIRE SPI, 16-PIN QSOP,
PROGRAMMABLE GAIN
4-WIRE SPI,
16-PIN QSOP
2-WIRE SERIAL,
10-PIN µMAX
MAX11201 (with buffers)
MAX11202 (without buffers)
24
MAX11210
MAX11200
20
18
16
MAX11206
MAX11209
MAX11213
MAX11207
MAX11211
MAX11203
MAX11208
MAX11212
MAX11205
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.