_______________________________________________________________ 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.

500ksps, Low-Power,

Serial 12-/10-/8-Bit ADCs

General Description

The MAX11661−MAX11666 are 12-/10-/8-bit, compact,

low-power, successive approximation analog-to-digital

converters (ADCs). These high-performance ADCs include

a high-dynamic range sample-and-hold and a high-speed

serial interface. These ADCs accept a full-scale input from

0V to the power supply or to the reference voltage.

The MAX11662/MAX11664/MAX11666 feature dual, sin-

gle-ended analog inputs connected to the ADC core

using a 2:1 MUX. The devices also include a separate

supply input for data interface and a dedicated input

for reference voltage. In contrast, the single-channel

devices generate the reference voltage internally from

the power supply.

These ADCs operate from a 2.2V to 3.6V supply and

consume only 3.3mW. The devices include full power-

down mode and fast wake-up for optimal power man-

agement and a high-speed 3-wire serial interface. The

3-wire serial interface directly connects to SPI, QSPIK,

Excellent dynamic performance, low voltage, low power,

ease of use, and small package size make these con-

verters ideal for portable battery-powered data-acquisi-

tion applications, and for other applications that demand

low-power consumption and minimal space.

and a 6-pin SOT23 package. These devices operate

over the -40NC to +125NC temperature range.

Features

S

500ksps Conversion Rate, No Pipeline Delay

S

12-/10-/8-Bit Resolution

S

1-/2-Channel, Single-Ended Analog Inputs

S

Low-Noise 73dB SNR

S

Variable I/O: 1.5V to 3.6V (Dual-Channel Only)

Allows the Serial Interface to Connect Directly

to 1.5V, 1.8V, 2.5V, or 3V Digital Systems

S

2.2V to 3.6V Supply Voltage

S

Low Power

3.3mW

Very Low Power Consumption at 8µA/ksps

S

External Reference Input (Dual-Channel Devices Only)

S

1.3µA Power-Down Current

S

SPI-/QSPI-/MICROWIRE-Compatible Serial

Interface

S

10-Pin, 3mm x 5mm µMAX Package

S

6-Pin, 2.8mm x 2.9mm SOT23 Package

S

Wide -40NC to +125NC Operation

Applications

Data Acquisition

Portable Data Logging

Medical Instrumentation

Battery-Operated Systems

Communication Systems

Automotive Systems

19-5530; Rev 5; 4/12

Note: All devices are specified over the -40°C to +125°C operating temperature range.

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

*EP = Exposed pad.

/V denotes an automotive qualified part.

Ordering Information

QSPI is a trademark of Motorola, Inc.

MICROWIRE is a registered trademark of National Semiconductor Corp.

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

EVALUATION

KIT

AVAILABLE

PART

PIN-PACKAGE

BITS

NO. OF CHANNELS

MAX11661AUT+

6 SOT23

8

1

MAX11662AUB+

10 FMAX-EP*

8

2

MAX11663AUT+

6 SOT23

10

1

MAX11664AUB+

10 FMAX-EP*

10

2

MAX11665AUT+

6 SOT23

12

1

MAX11666AUB+

10 FMAX-EP*

12

2

MAX11666AUB/V+

10 FMAX-EP*

12

2