19-5238; Rev 0; 4/10
16-Bit, Single-Channel, Ultra-Low Power,
Delta-Sigma ADC with 2-Wire Serial Interface
General Description
Features
S 16-Bit Full-Scale Resolution
S 720nV Noise (MAX11205B)
S 3ppm INL
S No Missing Codes
S Ultra-Low-Power Dissipation
The MAX11205 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
MAX11205 provides a high-accuracy internal oscillator
that requires no external components.
RMS
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 MAX11205 provides a simple 2-wire
S Fully Differential Reference Inputs
M
serial interface in the space-saving, 10-pin FMAX pack-
S Internal System Clock
2.4576MHz (MAX11205A)
2.2528MHz (MAX11205B)
age. The MAX11205 operates over the -40NC to +85NC
temperature range.
S External Clock
Applications
S Serial 2-Wire Interface (Clock Input and Data Input)
S On-Demand Offset and Gain Self-Calibration
S -40°C to +85°C Operating Temperature Range
Sensor Measurement (Temperature and
Pressure)
Portable Instrumentation
Battery Applications
Weigh Scales
S
2kV ESD Protection
S Lead(Pb)-Free and RoHS-Compliant µMAX
Package
Ordering Information
OUTPUT RATE
(sps)
PART
PIN-PACKAGE
MAX11205AEUB+*
MAX11205BEUB+
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.
*Future product—contact factory for availability.
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.