Texas Instruments AMC1100 Fully-Differential Isolation Amplifier

Texas Instruments AMC1100 Fully-Differential Isolation Amplifiers are a precision isolation amplifier with an output separated from the input circuitry by a silicon dioxide (SiO₂) barrier that is highly resistant to magnetic interference. This barrier has been certified to provide galvanic isolation of up to 4250 V_PEAK, according to UL1577 and IEC60747-5-2. TI AMC1100 can be used in conjunction with isolated power supplies to prevent noise currents on a high common-mode voltage line from entering the local ground and interfering with or damaging sensitive circuitry. The input of this isolation amplifier is optimized for direct connection to shunt resistors or other low voltage level signal sources. The excellent performance of the device enables accurate current and voltage measurement in energy-metering applications.

Features

±250mV input voltage range optimized for shunt resistors
Very low non-linearity: 0.075% max at 5V
Low offset error: 1.5mV max
Low noise: 3.1 mV_RMS (typical)
Low high-side supply current:
8mA max at 5V
Input bandwidth: 60kHz min
Fixed gain: 8 (0.5% Accuracy)
High Common-Mode Rejection Ratio: 108dB

Low-side operation: 3.3V
Certified galvanic isolation:
- UL1577 and IEC60747-5-2 approved
- Isolation voltage: 4250 VPEAK
- Working voltage: 1200 VPEAK
- Transient immunity: 2.5kV/µs min
Fully specified over the extended industrial temperature range