_______________________________________________________________ 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.

24-Bit, Single-Channel, Ultra-Low-Power, Delta

Sigma ADC with 2-Wire Serial Interface

19-5237; Rev 0; 4/10

Ordering Information

General Description

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

The MAX11202 operates over the -40NC to +85NC tem-

perature range.

Applications

Sensor Measurement (Temperature and

Pressure)

Portable Instrumentation

Battery Applications

Weigh Scales

Features

S

24-Bit Full-Scale Resolution

20.5-Bit Noise-Free Resolution at 13.75sps

19-Bit Noise-Free Resolution at 120sps

S

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

S

Fully Differential Reference Inputs

S

Internal System Clock

2.4576MHz (MAX11202A)

2.2528MHz (MAX11202B)

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

Note: All devices are specified over the -40NC to +85NC oper-

ating temperature range.

+Denotes a lead(Pb)-free/RoHS-compliant package.

µMAX is a registered trademark of Maxim Integrated Products, Inc.

Selector Guide

PART

PIN-PACKAGE

OUTPUT RATE

(sps)

MAX11202AEUB+

10 FMAX

120

MAX11202BEUB+

10 FMAX

13.75

RESOLUTION

(BITS)

4-WIRE SPI, 16-PIN QSOP,

PROGRAMMABLE GAIN

4-WIRE SPI,

16-PIN QSOP

2-WIRE SERIAL,

10-PIN µMAX

24

MAX11210

MAX11200

MAX11201 (with buffers)

MAX11202 (without buffers)

20

MAX11206

MAX11207

MAX11208

18

MAX11209

MAX11211

MAX11212

16

MAX11213

MAX11203

MAX11205