Maxim Integrated MAX11645EUA

Description
Low-power, 12-bit, 1-/2-channel analog-to-digital converters (ADCs)
Internal track/hold (T/H), voltage reference, clock, and I²C-compatible 2-wire serial interface
Single-supply operation: 2.7V to 3.6V (MAX11645) or 4.5V to 5.5V (MAX11644)
Low power consumption: 6μA at 1ksps sample rate
AutoShutdown™ powers down devices between conversions, reducing supply current to less than 1μA at low throughput rates
Measures two single-ended or one differential input
Fully differential analog inputs are software configurable for unipolar/bipolar, and single-ended/differential operation
Full-scale analog input range determined by internal reference or external reference voltage (1V to VDD)
MAX11645 features a 2.048V internal reference
MAX11644 features a 4.096V internal reference
Available in an ultra-tiny 1.9mm x 2.2mm WLP package and an 8-pin μMAX® package
Guaranteed over the extended temperature range (-40°C to 85°C)

Features
Ultra-tiny 1.9mm x 2.2mm Wafer Level Package
High-Speed I²C-Compatible Serial Interface:
400kHz Fast Mode
1.7MHz High-Speed Mode
Internal Reference:
2.048V (MAX11645)
4.096V (MAX11644)
External Reference: 1V to VDD
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

Applications
Handheld portable applications
Medical instruments
Battery-powered test equipment
Solar-powered remote systems
Received-signal-strength indicators
System supervision
Power-supply monitoring