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, single-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 powerdown mode and fast wake-up for optimal power management and a high-speed 3-wire serial interface. The 3-wire serial interface directly connects to SPI, QSPI™, and MICROWIRE® devices without external logic.

Excellent dynamic performance, low voltage, low power, ease of use, and small package size make these converters ideal for portable battery-powered data-acquisition applications, and for other applications that demand low-power consumption and minimal space.

These ADCs are available in a 10-pin µMAX® package, and a 6-pin SOT23 package. These devices operate over the -40°C to +125°C temperature range.

MAX11661, MAX11662, MAX11663, MAX11664, MAX11665, MAX11666: Typical Application Circuit

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Key Features

500ksps Conversion Rate, No Pipeline Delay
12-/10-/8-Bit Resolution
1-/2-Channel, Single-Ended Analog Inputs
Low-Noise 73dB SNR
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
2.2V to 3.6V Supply Voltage
Low Power
- 3.3mW
- Very Low Power Consumption at 8µA/ksps
External Reference Input (Dual-Channel Devices Only)
1.3µA Power-Down Current
SPI-/QSPI-/MICROWIRE-Compatible Serial Interface
10-Pin, 3mm x 5mm µMAX Package
6-Pin, 2.8mm x 2.9mm SOT23 Package
Wide -40°C to +125°C Operation

Applications/Uses

Automotive Systems
Battery-Operated Systems
Communication Systems
Data Acquisition
Medical Instrumentation
Portable Data Logging

Parametric Specs

Part Number

Resolution
(bits)

Input Chan.

Conv. Rate
(ksps)

ADC Architecture

Data Bus

Diff/S.E. Input

External V_REF
(V)

Unipolar V_IN
(V)

SNR
(dB)

THD
(dB)

INL
(±LSB)

Package/Pins

Budgetary
Price

ADC

max

min

max

See Notes

MAX11661

500

SAR

SPI

S.E. Only

3.6

49.5

-70

0.25

SOT23/6

$0.69 @1k

MAX11662

3.65

49.5

-70

0.25

UMAX/10

$1.03 @1k

MAX11663

61.5

-85

0.5

SOT23/6

$1.12 @1k

MAX11664

3.65

61.5

-85

0.5

UMAX/10

$1.10 @1k

MAX11665

-85

SOT23/6

$1.24 @1k

MAX11666

3.65

-85

UMAX/10

$1.46 @1k

See All Precision ADCs (< 5Msps) (443)

Pricing Notes:

This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific and version-specific prices and delivery, please see the price and availability page or contact an authorized distributor.

Design Resources

MAX11665EVKIT: Evaluation Kit for the MAX11665
MAX11666EVKIT: Evaluation Kit for the MAX11666

Quality and Environmental Data

Request Reliability Report for: MAX11662
Lead-Free Package Tin (Sn) Whisker Reports

Quality And Environmental

Device	Fab Process	Technology	Sample size	Rejects	FIT at 25°C	FIT at 55°C

Note : The failure rates are summarized by technology and mapped to the associated material part numbers. The failure rates are highly dependent on the number of units tested.

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