MAX11661_1204 Datasheet, PDF (1/28 Pages) Maxim Integrated Products – 500ksps, Low-Power,Serial 12-/10-/8-Bit ADCs

19-5530; Rev 5; 4/12
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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,
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 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
Data Acquisition
Portable Data Logging
Medical Instrumentation
Battery-Operated Systems
Communication Systems
Automotive Systems
Applications
Ordering Information
PART
PIN-PACKAGE
BITS
MAX11661AUT+
6 SOT23
8
MAX11662AUB+
10 FMAX-EP*
8
MAX11663AUT+
6 SOT23
10
MAX11664AUB+
10 FMAX-EP*
10
MAX11665AUT+
6 SOT23
12
MAX11666AUB+
10 FMAX-EP*
12
MAX11666AUB/V+
10 FMAX-EP*
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.
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.
NO. OF CHANNELS
1
2
1
2
1
2
2
________________________________________________________________ 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.