Texas Instruments AMC1211x-Q1 Isolated Amplifier
Texas Instruments AMC1211x-Q1 Isolated Amplifier is a precision, isolated amplifier with an output separated from the input circuitry by an isolation barrier that is highly resistant to magnetic interference. This barrier is certified to provide basic galvanic isolation of up to 4.25kVPEAK according to VDE V 0884-11 and UL1577. Used in conjunction with isolated power supplies, this isolated amplifier separates parts of the system that operate on different common-mode voltage levels and protects lower-voltage parts from damage.
The high-impedance input of the AMC1211A-Q1 is optimized for connection to high-voltage resistive dividers or other voltage signal sources with high output resistance. The excellent performance of the device supports accurate, low-temperature drift voltage or temperature sensing and control in closed-loop systems. The integrated missing high-side supply voltage detection feature simplifies system-level design and diagnostics.
Features
- Qualified for automotive applications
- AEC-Q100 Qualified with the following results
- Device temperature grade 1 of –40°C to 125°C ambient operating temperature range
- Device HBM ESD Classification Level 2
- Device CDM ESD Classification Level C6
- 2V, High-impedance input voltage range optimized for isolated voltage measurement
- Low offset error and drift
- ±1.5mV (max), ±15µV/°C (max)
- 1 Fixed gain
- Very low gain error and drift
- ±0.3% (max), ±45ppm/°C (max)
- 0.01%, 1ppm/°C (typ) Low nonlinearity and drift
- 3.3V Operation on high-side
- Missing high-side supply indication
- Safety-related certifications
- 4250VPK Basic isolation per DIN V VDE V 0884-11 (VDE V 0884-11): 2017-01
- 4250VRMS Isolation for 1 minute per UL1577
- CAN/CSA No. 5A-Component acceptance service notice
Applications
- Isolated voltage sensing In
- Traction inverters
- Onboard chargers
- DC/DC Converters
Functional Block Diagram
Publicado: 2018-08-07
| Actualizado: 2023-02-10