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_______________________________________________________________ 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.
MAX11661–MAX11666
500ksps, Low-Power,
Serial 12-/10-/8-Bit ADCs
General Description
The MAX11661MAX11666 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,
and MICROWIRE devices without external logic.
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.
These ADCs are available in a 10-pin FMAX package,
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 8A/ksps
S
External Reference Input (Dual-Channel Devices Only)
S
1.3A Power-Down Current
S
SPI-/QSPI-/MICROWIRE-Compatible Serial
Interface
S
10-Pin, 3mm x 5mm MAX 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.
MAX 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