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

Sigma ADC with 2-Wire Serial Interface

MAX11212

19-5247; Rev 0; 4/10

Ordering Information

Selector Guide

General Description

The MAX11212 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

MAX11212 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 MAX11212 provides a simple 2-wire

age. The MAX11212 operates over the -40NC to +85NC

temperature range.

Applications

Sensor Measurement (Temperature and

Pressure)

Portable Instrumentation

Battery Applications

Weigh Scales

Features

S

18-Bit Full-Scale Resolution

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 (MAX11212A)

2.2528MHz (MAX11212B)

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 -40°C to +85°C oper-

ating temperature range.

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

*Future product—contact factory for availability.

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

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

PART

PIN-PACKAGE

OUTPUT RATE

(sps)

MAX11212AEUB+*

10 FMAX

120

MAX11212BEUB+

10 FMAX

13.75

For pricing, delivery, and ordering information, please contact Maxim Direct

at 1-888-629-4642, or visit Maxim’s website at www.maximintegrated.com.