The CSD202 senses the bi-directional current on a high common-mode bus and monitors the bus voltage with an I2C™- or SMBUS-compatible digital interface. The programmable calibration value, conversion times, averaging, and an internal multiplier make it easy to read out current, bus voltage, and power values directly from registers.

The CSD202 senses current on common-mode bus voltages that can vary from 0V to 36V, independent of the supply voltage. The device operates from a single 2.7V to 5.5V supply, drawing a typical of 340μA of supply current. The device is specified over the operating temperature range between –40°C and 125°C and features up to 16 programmable addresses on the I 2C-compatible interface. See Table 1 for the order information.

1. FEATURES

• Senses bus voltages from 0V to 36V

• High-side or low-side sensing

• Reports current, voltage, and power

• High accuracy:

0.05% gain error (max)

2.5μV offset (Max)

• Configurable averaging options

• 16 programmable addresses

• Operates from 2.7V to 5.5V power supply

• MSOP-10 package

2. APPLICATIONS

• Servers

• Telecom equipment

• Computing

• Power management

• Battery chargers

• Power supplies

• Test equipment