MAX11646 Datasheet, PDF (1/20 Pages) Maxim Integrated Products – 2.7V to 3.6V and 4.5V to 5.5V, Low-Power, 1-/2-Channel, 2-Wire Serial, 10-Bit ADCs

19-5134; Rev 0; 1/10
EVAALVUAAILTAIOBNLEKIT
2.7V to 3.6V and 4.5V to 5.5V, Low-Power,
1-/2-Channel, 2-Wire Serial, 10-Bit ADCs
General Description
The MAX11646/MAX11647 low-power, 10-bit, 1-/2-
channel analog-to-digital converters (ADCs) feature
internal track/hold (T/H), voltage reference, a clock, and
an I²C-compatible 2-wire serial interface. These
devices operate from a single supply of 2.7V to 3.6V
(MAX11647) or 4.5V to 5.5V (MAX11646) and require
only 670µA at the maximum sampling rate of 94.4ksps.
Supply current falls below 230µA for sampling rates
under 40ksps. AutoShutdown™ powers down the
devices between conversions, reducing supply current
to less than 1µA at low throughput rates. The
MAX11646/MAX11647 each measure two single-ended
or one differential input. The fully differential analog
inputs are software configurable for unipolar or bipolar
and single-ended or differential operation.
The full-scale analog input range is determined by the
internal reference or by an externally applied reference
voltage ranging from 1V to V_DD. The MAX11647 fea-
tures a 2.048V internal reference and the MAX11646
features a 4.096V internal reference.
The MAX11646/MAX11647 are available in an 8-pin
µMAX^® package and are guaranteed over the extend-
ed temperature range (-40°C to +85°C). For pin-com-
patible 12-bit parts, refer to the MAX11644/MAX11645
data sheet.
Applications
Handheld Portable Applications
Medical Instruments
Battery-Powered Test Equipment
Power-Supply Monitoring
Solar-Powered Remote Systems
Received-Signal-Strength Indicators
System Supervision
Features
♦ High-Speed I²C-Compatible Serial Interface
400kHz Fast Mode
1.7MHz High-Speed Mode
♦ Single Supply
2.7V to 3.6V (MAX11647)
4.5V to 5.5V (MAX11646)
♦ Internal Reference
2.048V (MAX11647)
4.096V (MAX11646)
♦ External Reference: 1V to V_DD
♦ Internal Clock
♦ 2-Channel Single-Ended or 1-Channel Fully
Differential
♦ Internal FIFO with Channel-Scan Mode
♦ Low Power
670µA at 94.4ksps
230µA at 40ksps
60µA at 10ksps
6µA at 1ksps
0.5µA in Power-Down Mode
♦ Software-Configurable Unipolar/Bipolar
♦ Small, 8-Pin µMAX Package
Ordering Information
PART
TEMP RANGE
PIN-
I²C SLAVE
PACKAGE ADDRESS
MAX11646EUA+ -40°C to +85°C 8 µMAX
MAX11647EUA+ -40°C to +85°C 8 µMAX
0110110
0110110
+Denotes a lead(Pb)-free/RoHs-compliant package.
Typical Operating Circuit and Selector Guide appear at end
of data sheet.
AutoShutdown is a trademark of Maxim Integrated Products, Inc.
µMAX is a registered trademark of Maxim Integrated Products, Inc.
________________________________________________________________ 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.