LTC6115: High Voltage High Side Current and Voltage Sense

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The current sensing part of the LTC®6115 monitors current by sensing the voltage across an external sense resistor. The sensed voltage is converted to an output current which can then be translated to a voltage by an external resistor, ROUT. Due to its fast response, it is a perfect choice for load current warning and shut-off protection control.

The LTC®6115 also includes an internal 1MΩ resistor divider and a precision voltage amplifier for accurate voltage monitoring. The resistor attenuation of 40 enables sensing of up to 100V on the VIN pin, making it suitable for precision high voltage monitoring in telecommunications, industrial and automotive applications. The full-scale output voltage can be configured by external gain resistors to maximize use of the amplifier’s rail-to-rail output. The LTC®6115 is available in a 12-lead MSOP package.

Features and Benefits:

Current Sense
- Supply Range: 5V to 100V
- Low Offset Voltage: ±500µV (Maximum)
- 1µs Response Time
- Gain Configurable with 2 Resistors
- Low Input Bias Current: 170nA (Maximum)
- PSRR: 118dB (Minimum)
- Low Supply Current: 250µA

Voltage Sense
- Voltage Sense n Voltage Sense Range: 0V to 100V
- Precision 1MΩ Resistor Divider
- Low Total Gain Error: ±0.15% (Maximum)
- Supply Voltage Range: 2.7V to 5.5V
- Low Supply Current: 57µA
- Operating Temperature Range: –40°C to 125°C 

Applications:

- Current Shunt Measurement 
- Battery Monitoring
- Power Management
- Automotive Sensing and Control
- Industrial Monitoring

Product Lifecycle: Recommended for new designs. This product has been released to the market. The data sheet contains all final specifications and operating conditions. For new designs, ADI recommends utilization of these products.