11 Jan '15, 7pm

Chipset measures 3-phase AC power. ADE7933/7932 isolated, 3-ch. sigma-delta ADCs @EDNcom @ADI_News

The ADE7933/ADE7932 are isolated, 3-channel sigma-delta analogue-to-digital converters (Σ-Δ ADCs) for polyphase energy metering applications that use shunt current sensors. The ADE7923 is a nonisolated, 3-channel Σ-Δ ADC for the neutral line that uses a shunt current sensor. The ADE7932 features two 24-bit ADCs, and the ADE7933 and ADE7923 feature three 24-bit ADCs. One channel is dedicated to measuring the voltage across the shunt when a shunt is used for current sensing. This channel provides a signal-to-noise ratio (SNR) of 67 dB over a 3.3 kHz signal bandwidth. Up to two additional channels are dedicated to measuring voltages, which are usually sensed using resistor dividers. The unused voltage channels on the neutral ADE7923 can be used for auxiliary voltage measurements. These channels provide an SNR of 75 dB over a 3.3 kHz signal bandwidth. One voltage channel can b...

Full article: http://www.edn.com/electronics-products/other/4438299/Chi...

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edn.com 11 Jan '15, 7pm

The ADE7933/ADE7932 are isolated, 3-channel sigma-delta analogue-to-digital converters (Σ-Δ ADCs) for polyphase energy met...

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