| Device type | Voltage sensing |
| Input range (Vp-p) | 2 |
| Isolation working voltage VIOWM (rms) (V) | 1500 |
| Isolation transient overvoltage VIOTM (peak) (V) | 7000 |
| CMTI (Min) (kV/μs) | 15, 75 |
| Input offset (+/-) (Max) (mV) | 9.9, 1.5 |
| Input offset drift (+/-) (Typ) (uV/C) | 20, 3 |
| Gain error (+/-) (Max) (%) | 1, 0.3 |
| Gain error drift (+/-) (Typ) (ppm/°C) | 30, 5 |
| Gain non-linearity (+/-) (Max) (%) | 0.04 |
| Small signal bandwidth (Typ) (kHz) | 220, 275 |
| Rating | Automotive |
| Operating temperature range (C) | -40 to 125 |
| TI functional safety category | Functional Safety-Capable |
- AEC-Q100 qualified for automotive applications:
- Temperature grade 1: –40°C to +125°C, TA
- Functional Safety-Capable
- Documentation available to aid functional safety system design
- 2-V, high-impedance input voltage range optimized for isolated voltage measurement
- Fixed gain: 1
- Low DC errors:
- AMC1311-Q1:
- Offset error: ±9.9 mV (maximum)
- Offset drift: ±20 μV/°C (typical)
- Gain error: ±1% (maximum)
- Gain drift: ±30 ppm/°C (typical)
- AMC1311B-Q1:
- Offset error: ±1.5 mV (maximum)
- Offset drift: ±10 μV/°C (maximum)
- Gain error: ±0.2% (maximum)
- Gain drift: ±40 ppm/°C (maximum)
- Nonlinearity: 0.04% (maximum)
- AMC1311-Q1:
- 3.3-V operation on high-side ( AMC1311B-Q1)
- High CMTI: 100 kV/μs ( AMC1311B-Q1)
- Missing high-side supply indication
- Safety-related certifications:
- 7000-VPK reinforced isolation per DIN EN IEC 60747-17 (VDE 0884-17)
- 5000-VRMS isolation for 1 minute per UL1577
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.
