AMC1311-Q1 Texas instruments

AMC1311-Q1

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AMC1311-Q1

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Описание

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.

AEC-Q100 qualified for automotive applications:
- Temperature grade 1: –40°C to +125°C, T_A
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)
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-V_PK reinforced isolation per DIN EN IEC 60747-17 (VDE 0884-17)
- 5000-V_RMS isolation for 1 minute per UL1577

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