The AMC1302 is a precision isolated amplifier with a capacitive isolation barrier that has high immunity to magnetic interference. This barrier provides reinforced isolation of 5 kVRMS (maximum) with a very long lifetime and low power dissipation. When used with isolated power supplies, this device isolates components that operate on different common-mode voltage levels. Furthermore, the AMC1302 also protects lower-voltage devices from damage.
The input of the AMC1302 is optimized for direct connection to shunt resistors or other low voltage-level signal sources. The ±50-mV input voltage range allows significant reduction of the power dissipation through the shunt. Additionally, the low high-side supply current and voltage of the AMC1302 allow use of low-cost isolated power-supply solutions. The performance of the device supports accurate current control resulting in system-level power savings and in low torque ripple that is particularly important in motor control applications. The integrated input common-mode overvoltage and missing high-side supply voltage detection features of the AMC1302 simplify system-level diagnostics.
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|Input range (Vp-p)|
|Isolation working voltage VIOWM (rms) (V)|
|Isolation transient overvoltage VIOTM (peak) (V)|
|CMTI (Min) (kV/µs)|
|Input offset (+/-) (Max) (mV)|
|Input offset drift (+/-) (Typ) (uV/C)|
|Gain error (+/-) (Max) (%)|
|Gain error drift (+/-) (Typ) (ppm/°C)|
|Gain non-linearity (+/-) (Max) (%)|
|Small Signal Bandwidth (Typ) (kHz)|
|Operating temperature range (C)|
|-55 to 125||-40 to 125||-40 to 125||-40 to 125||-40 to 125|
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