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1 High-Side current sensor with I2C, 24V, power calculation, 1 temperature sensor, bi-directional, peak detection, alert
Overview
- Description:Current/DC Power Sensor with Temperature Monitoring
- Vsense min FSR (mV):-10, -20, -40, -80
- Vsense max FSR (mV):10, 20, 40, 80
- Vsense accuracy (% FSR, max):0.9
- Vbus Range min (V):3
- Vbus Range max (V):24
- Vbus accuracy (% FSR, max):0.05
- Sampling Interval min (msec):2.5
- Sampling Interval max (msec):2600
- Remote Temperature Monitors:3
- # Ambient Temperature Monitors:1
- Temperature Accuracy Typical (°):0.25
- Temperature Accuracy Max (°):1
- Alert/Therm:2
- Peak Detection:Hardware
- Accumulator?:No
- Interface:SMBus/I2C
- Address Select:15
- # Current Channel:1
- ADC Resolution (bit):11
- Bi-directional current measurement
- Measures bus voltage
- 1% current measurement accuracy
- Integrated over 82ms to 2.6sec with 11-bit resolution
- 3V to 24V voltage bus voltage range
- Calculates proportional power
- Software controls to program time duration and magnitude threshold
- Bus or separately powered for low voltage operation
- Wide temperature operating range: -40°C to +85°C
- ±1°C accuracy (-5°C < TA < 85°C)
- ALERT# and THERM# outputs for temperature, voltage, and out-of-current limit reporting
- Pin-selectable SMBus Address
- Block Read and Write
- Available in a 12-pin 4mm x 4mm QFN RoHS Compliant Package (EMC1701-1)
- Available in a 10-pin MSOP RoHS Compliant Package (EMC1701-2)
- Notebook and Desktop Computers
- Industrial
- Power Management Systems
- Embedded Applications
The EMC1701 is a combination high-side current sensing device with precision temperature measurement. It measures the voltage developed across an external sense resistor to represent the high-side current of a battery or voltage regulator. The EMC1701 also measures the bus voltage and uses these measured values to present a proportional power calculation. The EMC1701 contains additional bi-directional peak detection circuitry to flag instantaneous current spikes with programmable time duration and magnitude threshold. Finally, the EMC1701 includes an internal diode channel for ambient temperature measurement.
Both current sensing and temperature monitoring include two tiers of protection: one that can be masked and causes the ALERT# pin to be asserted, and the other that cannot be masked and causes the THERM# pin to be asserted.
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referencedesigns,Reference Designs:
codeexamples,Code Examples:
ibisboarddesignfiles,Board Design Files: