LTC®2945 is a rail-to-rail system monitor that measures current, voltage, and power. The current measurement range of 0V to 80V is independent of the input supply. An on-board 0.75% accurate 12-bit ADC measures load current, input voltage and an auxiliary external voltage. A 24-bit power value is generated by digitally multiplying the measured 12-bit load current and input voltage data. Minimum and maximum values are stored and an overrange alert with programmable thresholds minimizes the need for software polling. Data is reported via a standard I2C interface. Shutdown mode reduces power consumption to 20µA. Typical applications are telecom infrastructure, industrial, automotive, consumer.
- Includes separate data input and output pins for use with standard or opto-isolated I²C connections
- VDD supply voltage range from 4 to 80V at TA = 25°C
- VDD supply current is 0.8mA at VDD = 48V, INTVCC open shutdown, TA = 25°C
- INTVCC supply voltage range is 2.7 to 5.9V
- Shunt regulator for supplies >80V
- Î�â�� ADC with less than ±0.75% total unadjusted error
- 12-bit resolution for current and voltages, internal multiplier calculates 24-bit power value
- Stores minimum and maximum values, alerts when limits exceeded
- Continuous scan and snapshot modes, split SDA for opto-isolation
- 12-Lead (3mm Ã� 3mm) Plastic QFN package,-40°C to 85°C temperature range
Product details
| IC Function:
Power Monitor
|
| Supply Voltage Min:
2.7V
|
| Supply Voltage Max:
80V
|
| IC Package Type:
QFN-EP
|
| No. of Pins:
12Pins
|
| Operating Temperature Min:
-40°C
|
| Operating Temperature Max:
85°C
|
| Product Range:
-
|
| Automotive Qualification Standard:
-
|
| MSL:
MSL 1 - Unlimited
|
Other details
| Brand |
ANALOG DEVICES |
| Part Number |
LTC2945IUD#PBF |
| Quantity |
Each |
| Technical Data Sheet EN |
 |
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