Rainbow Electronics MAX11645 - Manual

General Description
The MAX11644/MAX11645 low-power, 12-bit, 1-/2-
channel analog-to-digital converters (ADCs) feature
internal track/hold (T/H), voltage reference, clock, and
an I
2 C-compatible 2-wire serial interface. These
devices operate from a single supply of 2.7V to 3.6V
(MAX11645) or 4.5V to 5.5V (MAX11644) and require
only 6μA at a 1ksps sample rate. AutoShutdown™ pow-
ers down the devices between conversions, reducing
supply current to less than 1μA at low throughput rates.
The MAX11644/MAX11645 each measure two single-
ended or one differential input. The fully differential ana-
log 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 MAX11645 fea-
tures a 2.048V internal reference and the MAX11644
features a 4.096V internal reference.
The MAX11644/MAX11645 are available in an ultra-tiny
1.9mm x 2.2mm WLP package and an 8-pin μMAX
®
package. The MAX11644/MAX11645 are guaranteed
over the extended temperature range (-40°C to +85°C).
For pin-compatible 10-bit parts, refer to the MAX11646/
MAX11647 data sheet.
Applications
Features
♦ Ultra-Tiny 1.9mm x 2.2mm Wafer Level Package
♦ High-Speed I
2 C-Compatible Serial Interface
400kHz Fast Mode
1.7MHz High-Speed Mode
♦ Single-Supply
2.7V to 3.6V (MAX11645)
4.5V to 5.5V (MAX11644)
♦ Internal Reference
2.048V (MAX11645)
4.096V (MAX11644)
♦ 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
MAX11644/MAX11645
Low-Power, 1-/2-Channel, I
2
C, 12-Bit ADCs
in Ultra-Tiny 1.9mm x 2.2mm Package
________________________________________________________________ Maxim Integrated Products 1
Ordering Information
19-5225; Rev 1; 9/10
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.
EVALUATION KIT
AVAILABLE
PART TEMP RANGE
PIN-
PACKAGE I 2 C SLAVE
ADDRESS
MAX11644EUA+ -40°C to +85°C 8 μMAX 0110110
MAX11645EUA+ -40°C to +85°C 8 μMAX 0110110
MAX11645EWC+ -40°C to +85°C 12 WLP 0110110
Typical Operating Circuit and Selector Guide appear at end
of data sheet.
AutoShutdown is a trademark and μMAX is a registered trademark
of Maxim Integrated Products, Inc.
+ Denotes a lead(Pb)-free/RoHs-compliant package.
Handheld Portable
Applications
Medical Instruments
Battery-Powered Test
Equipment
Solar-Powered Remote
Systems
Received-Signal-Strength
Indicators
System Supervision
Power-Supply Monitoring