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LINEAR TECHNOLOGY  LTC2946IDE#PBF  Rail/Rail System, 2.7V-100V Supply, 12-Bit Resolution, Shunt Regulator, I2C Interface, DFN-16

LINEAR TECHNOLOGY LTC2946IDE#PBF
Technical Data Sheet (462.46KB) EN See all Technical Docs

Image is for illustrative purposes only. Please refer to product description.

Product Overview

The LTC2946IDE#PBF is a rail-to-rail System Monitor measures current, voltage, power, charge and energy. It features an operating range of 2.7 to 100V and includes a shunt regulator for supplies above 100V. The current measurement common mode range of 0 to 100V is independent of the input supply. A 12-bit ADC measures load current, input voltage and an auxiliary external voltage. Load current and internally calculated power is integrated over an external clock or crystal or internal oscillator time base for charge and energy. An accurate time base allows the LTC2946 to provide measurement accuracy of better than ±0.6% for charge and ±1% for power and energy. Minimum and maximum values are stored and an over-range alert with programmable thresholds minimizes the need for software polling. Data is reported via a standard I²C interface. The LTC2946 I²C interface includes separate data input and output pins for use with standard or opto-isolated I²C connections.
  • Additional ADC input monitors an external voltage
  • Continuous scan and snapshot modes
  • Stores minimum and maximum values
  • Alerts when limits exceeded
  • Split SDA pin eases opto-isolation
  • Internal ±5% or external time bases
  • Shutdown mode with IQ <40µA
  • Delta-sigma ADC with less than ±0.4% total unadjusted error
  • >100V Shunt regulator for supplies
  • 12-bit Resolution for current and voltages
  • ±1% Accurate power and energy measurements
  • ±0.6% Accurate current and charge measurements

 

Product Information

Threshold Voltage:
-
No. of Supervisors / Monitors:
-
Supply Voltage Min:
2.7V
Supply Voltage Max:
100V
Reset Type:
Internal
Digital IC Case:
DFN
No. of Pins:
16Pins
Delay Time:
-
Operating Temperature Min:
-40°C
Operating Temperature Max:
85°C
Packaging:
Cut Tape
Product Range:
-
Automotive Qualifications Standard:
-
MSL:
MSL 1 - Unlimited
SVHC:
No SVHC (17-Dec-2015)

Find similar products  grouped by common attribute

Applications

  • Communications & Networking;
  • Industrial;
  • Test & Measurement

Legislation and Environmental

Moisture Sensitivity Level:
MSL 1 - Unlimited
Product Traceability
RoHS Compliant:
Yes
Authorized Distributor

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