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Avago Technologies
ACPL-798J Sigma-Delta Modulator

The ACPL-798J is a 1-bit, second-order sigma-delta modulator that oversamples an analog input signal into a high-speed data stream with galvanic isolation based on optical coupling technology. The ACPL-798J operates from a 5V power supply with dynamic range of 82dB with an appropriate digital filter. The differential inputs of ±200mV (full scale ±320mV) are ideal for direct connection to shunt resistors or other low-level signal sources in applications such as motor phase current...

Texas Instruments
Reinforced Modulator with Input & LVDS Interface

The AMC1305 is a precision, delta-sigma ( Δ Σ) modulator with the output separated from the input circuitry by a capacitive double isolation barrier that is highly resistant to magnetic interference. This barrier is certified to provide reinforced isolation of up to 7000 VPEAK according to the DIN V VDE V 0884-10, UL1577, and CSA standards. Used in conjunction with isolated power supplies, the device prevents noise currents on a high common-mode voltage line from entering the local...

Avago Technologies
Automotive R²Coupler™ Sigma-Delta Modulator

The ACPL-C797T isolated modulator converts a low bandwidth analog input into a high speed 1-bit data stream by means of Sigma-Delta ( Σ- Δ)  over-sampling modulator.   The  modulator data and on-chip sampling  clock are encoded and transmitted across the isolation  barrier where they are recovered and decoded into separate high speed clock and data channels.  Combined with superior optical coupling technology, the modulator delivers high noise margin...