DC1697A

演示板, 用于LTC2945 宽范围I2C功率监视器

is a demonstration circuit for the LTC2945 I2C power monitor. It is a rail to rail system monitor that measures current, voltage, and power. It features an operating range of 2.7V to 80V and includes a shunt regulator for supplies above 80V to allow flexibility in the selection of input supply. The current measurement range of 0V to 80V is independent of the input supply. An onboard 0.75% accurate 12bit ADC measures load current, input voltage and an auxiliary external voltage. A 24bit power value is generated by digitally multiplying the measured 12bit 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. The DC1697A was designed to be connected to the DC590 and controlled through the QuikEval suite of software.

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Delta sigma ADC with less than ±0.75% total unadjusted error

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12bit resolution for current and voltages

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Internal multiplier calculates 24bit power value

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Stores minimum and maximum values

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Alerts when limits exceeded

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Additional ADC input monitors an external voltage

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Continuous scan and snapshot modes

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Shutdown mode

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Split SDA for opto isolation

Companion with DC590B USB serial controller board, sold separately.