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Low-Power, 1-/2-Channel, I²C, 10-Bit ADCs in Ultra-Tiny 1.9mm x 2.2mm Package

1-/2-Channel, 10-Bit ADCs Broaden the Industry's Largest I²C Portfolio

Product Details

Key Features

Applications/Uses

Parametric specs for Precision ADCs (< 5Msps)
Resolution (bits) (ADC) 10
# Input Channels 2
Conv. Rate (ksps) (max) 94.4
Data Bus I2C
ADC Architecture SAR
Diff/S.E. Input Both
Internal VREF (V) (nominal) 2.048
External VREF (V) (min) 1
External VREF (V) (max) 3.6
Unipolar VIN (V) (max) 2.048
Bipolar VIN (±V) (max) 1.024
INL (±LSB) 1
Package/Pins UMAX/8
WLP/12
Budgetary
Price (See Notes)
1.07
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Simplified Block Diagram

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Parameters

Parametric specs for Precision ADCs (<u><</u> 5Msps)
Resolution (bits) (ADC) 10
# Input Channels 2
Conv. Rate (ksps) (max) 94.4
Data Bus I2C
ADC Architecture SAR
Diff/S.E. Input Both
Internal VREF (V) (nominal) 2.048
External VREF (V) (min) 1
External VREF (V) (max) 3.6
Unipolar VIN (V) (max) 2.048
Bipolar VIN (±V) (max) 1.024
INL (±LSB) 1
Package/Pins UMAX/8
WLP/12
Budgetary
Price (See Notes)
1.07

Key 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
  • 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 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/Uses

  • Battery-Powered Test Equipment
  • Handheld Portable Applications
  • Medical Instruments
  • Power-Supply Monitoring
  • Received-Signal-Strength Indicators
  • Solar-Powered Remote Systems
  • System Supervision

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 6µA at a 1ksps sample rate. AutoShutdown™ powers down the devices between conversions, reducing supply current to less than 1µA at lower 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 VDD. The MAX11647 features a 2.048V internal reference and the MAX11646 features a 4.096V internal reference.

The MAX11646/MAX11647 are available in an ultra-tiny 1.9mm x 2.2mm WLP package and an 8-pin µMAX® package. These ADCs are guaranteed over the extended temperature range (-40°C to +85°C). For pin-compatible 12-bit parts, refer to the MAX11644/MAX11645 data sheet.

Simplified Block Diagram

MAX11646, MAX11647: Typical Operating Circuit MAX11646, MAX11647: Typical Operating Circuit Zoom icon

Technical Docs

Support & Training

Search our knowledge base for answers to your technical questions.

Filtered Search

Our dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal .