The AMC1311-Q1 is a precision, isolated amplifier with an output separated from the input circuitry by a capacitive isolation barrier that is highly resistant to magnetic interference. This barrier is certified to provide reinforced galvanic isolation of up to 5 kVRMS according to DIN EN IEC 60747-17 (VDE 0884-17) and UL1577 and supports a working voltage of up to 1500 VRMS.
The isolation barrier separates parts of the system that operate on different common-mode voltage levels and protects the low-voltage side from voltages that can cause electrical damage or be harmful to an operator.
The high-impedance input of the AMC1311-Q1 is optimized for connection to high-impedance resistive dividers or any other high-impedance voltage signal source. The excellent DC accuracy and low temperature drift support accurate, isolated voltage sensing and control in closed-loop systems. The integrated missing high-side supply voltage detection feature simplifies system-level design and diagnostics.
The AMC1311-Q1 is offered with two performance grade options: AMC1311-Q1 and AMC1311B-Q1.
| Device type | Voltage sensing |
| Peak-to-peak input voltage range (V) | 2 |
| Isolation rating | Reinforced |
| Withstand isolation voltage (VISO) (Vrms) | 5000 |
| Working isolation voltage (VIOWM) (Vrms) | 1500 |
| Transient isolation voltage (VIOTM) (VPK) | 7000 |
| CMTI (min) (kV/µs) | 15, 75 |
| Creepage (min) (mm) | 8.5 |
| Clearance (min) (mm) | 8.5 |
| Input offset (±) (max) (V) | 0.0015, 0.0099 |
| Input offset drift (±) (typ) (V/°C) | 0.000003, 0.00002 |
| Rating | Automotive |
| Operating temperature range (°C) | -40 to 125 |
| TI functional safety category | Functional Safety-Capable |
| SOIC (DWV) | 8 | 67.275 mm² 5.85 x 11.5 |
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