Rail/Rail System, 2.7V-100V Supply, 12-Bit Resolution, Shunt Regulator, I2C Interface, DFN-16

LTC2946CDE#PBF - Rail/Rail System, 2.7V-100V Supply, 12-Bit Resolution, Shunt Regulator, I2C Interface, DFN-16

The actual product may differ from image shown

Manufacturer Part No:
Newark Part No.:
Technical Datasheet:
See all Technical Docs

Product Overview

The LTC2946CDE#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


Communications & Networking, Industrial, Test & Measurement

Product Information

MSL 1 - Unlimited
Find similar products Choose and modify the attributes above to find similar products.

Related Searches

US continental orders over $49 and under 50 pounds may qualify for free ground shipping. Click the link for the full Terms and Conditions of the offer.

88 In stock

for same day shipping

Available in quantity shown

To order more than shown inventory, contact sales

see cut-off times
$4.29 $ 4.29
Price for:
Multiple: 1 Minimum: 1
Quantity Price Your Price
1 + $8.45
25 + $5.67
100 + $4.80
No longer stocked:: No Longer Manufactured::
Add to Cart
Add Line Note
Total Price:
Total Price: ( )
Total Price: --

Customer Reviews

Customer Q&A Exchange


Like to see information about this product from other customers?

 Read discussions, blogs, documents from our community members.


Select document type(s) you want to see and click “Apply Filters” button
Post a question to one of our experts or start a discussion and get responses from supplier experts and fellow engineers in our community.