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SMBus 4-Channel Wide Dynamic Range Power Accumulator

Optimize Code Execution for Maximum Run Time in Mobile Applications

Product Details

The MAX34407 is a current and voltage monitor that is specialized for determining power consumption. The device has a wide dynamic range to allow it to accurately measure power in systems that consume small to large amounts of power. The device is configured and monitored with a standard I2C/SMBus serial interface. The unidirectional current sensor offers precision high-side operation with a low full-scale sense voltage. The device automatically collects the current-sense and voltage samples. The samples are then multiplied to obtain a power value and the power values are then accumulated. Upon a command from the host, the device transfers the accumulated power samples as well as the accumulation count to a set of registers that the host can access. This transfer occurs without missing a sample and allows the host to retrieve the data not in real time, but at any time interval.

Key Features

  • Enables Code Optimization to Minimize Power Consumption in Portable Platforms
    • Four Power Monitors with Wide 66dB Dynamic Range
    • Measures Both Current and Voltage
    • Low Power Consumption
    • Slow Mode for Reduced Power Consumption
    • Power-Down Mode
  • Minimizes Processor Overhead with Autonomous Operation
    • Per Channel 48-Bit Power Accumulators Capture 17 Minutes of Data at 1024 Samples per Second
    • Per Channel 12-Bit Voltage Registers
  • High-Integration Solution Minimizes Parts Count, PCB Space, and BOM Cost
    • Wide Current Common-Mode Range of 2.5V to 15V
    • Low Full-Scale, Current-Sense Voltage of 100mV
    • I2C/SMBus Interface
    • Temperature Range: -40°C to +85°C
    • Small, 2.285mm x 2.185mm Footprint WLP Package with 16 Bumps at 0.5mm Pitch
  • Ease of Development
    • Evaluation Kit with Advanced GUI Available (MAX34407EVKIT#)
    • Windows Driver Available

Applications/Uses

  • Smartphones
  • Tablets
  • Ultra Notebooks
Parametric specs for Current Sense Amplifiers
VSENSE_FS (mV) (recomm.) 100
Output Format Digital
CMVR (V) (min) 2.5
CMVR (V) (max) 15
VCC (V) (min) 2.7
VCC (V) (max) 3.6
ICC (µA) (typ) 300
Bi-Dir. Curr. Sense No
Gain Adj.
Oper. Temp. (°C) -40 to +85
Package/Pins WLP/16
Budgetary
Price (See Notes)
$3.17 @1k
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Simplified Block Diagram

MAX34407: Typical Operating Circuit MAX34407: Typical Operating Circuit Zoom icon

Technical Docs

Design & Development

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Description

The MAX34407 evaluation kit (EV kit) provides the hardware and software graphical user interface (GUI) necessary to evaluate the MAX34407 SMBus 4-Channel Wide Dynamic Range Power Accumulator. The EV kit includes a MAX34407EWE+ installed, as well as a micro-USB cable to communicate with a PC.

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Features

  • Easy Evaluation of the MAX34407
  • USB HID interface
  • Windows XP® and Windows® 7-Compatible Software
  • RoHS Compliant
  • Proven PCB Layout
  • Fully Assembled and Tested

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Parameters

Parametric specs for Current Sense Amplifiers
VSENSE_FS (mV) (recomm.) 100
Output Format Digital
CMVR (V) (min) 2.5
CMVR (V) (max) 15
VCC (V) (min) 2.7
VCC (V) (max) 3.6
ICC (µA) (typ) 300
Bi-Dir. Curr. Sense No
Gain Adj.
Oper. Temp. (°C) -40 to +85
Package/Pins WLP/16
Budgetary
Price (See Notes)
$3.17 @1k

Key Features

  • Enables Code Optimization to Minimize Power Consumption in Portable Platforms
    • Four Power Monitors with Wide 66dB Dynamic Range
    • Measures Both Current and Voltage
    • Low Power Consumption
    • Slow Mode for Reduced Power Consumption
    • Power-Down Mode
  • Minimizes Processor Overhead with Autonomous Operation
    • Per Channel 48-Bit Power Accumulators Capture 17 Minutes of Data at 1024 Samples per Second
    • Per Channel 12-Bit Voltage Registers
  • High-Integration Solution Minimizes Parts Count, PCB Space, and BOM Cost
    • Wide Current Common-Mode Range of 2.5V to 15V
    • Low Full-Scale, Current-Sense Voltage of 100mV
    • I2C/SMBus Interface
    • Temperature Range: -40°C to +85°C
    • Small, 2.285mm x 2.185mm Footprint WLP Package with 16 Bumps at 0.5mm Pitch
  • Ease of Development
    • Evaluation Kit with Advanced GUI Available (MAX34407EVKIT#)
    • Windows Driver Available

Applications/Uses

  • Smartphones
  • Tablets
  • Ultra Notebooks

Description

The MAX34407 is a current and voltage monitor that is specialized for determining power consumption. The device has a wide dynamic range to allow it to accurately measure power in systems that consume small to large amounts of power. The device is configured and monitored with a standard I2C/SMBus serial interface. The unidirectional current sensor offers precision high-side operation with a low full-scale sense voltage. The device automatically collects the current-sense and voltage samples. The samples are then multiplied to obtain a power value and the power values are then accumulated. Upon a command from the host, the device transfers the accumulated power samples as well as the accumulation count to a set of registers that the host can access. This transfer occurs without missing a sample and allows the host to retrieve the data not in real time, but at any time interval.

Simplified Block Diagram

MAX34407: Typical Operating Circuit MAX34407: 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