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AMC1400-Q1 Automotive Reinforced Isolated Amp With High CMTI
Texas Instruments' precision voltage-sensing amp is available in a stretched SOIC package
Texas Instruments' AMC1400-Q1 is a precision isolated amp with an output that is separated from the input circuitry by an isolation barrier that is highly resistant to magnetic interference. This barrier is certified to provide reinforced galvanic isolation of up to 7.5 kVRMS according to DIN EN IEC 60747-17 (VDE 0884-17) and UL1577 and supports a working voltage of up to 2 kVRMS. The isolation barrier separates parts of the system that operate on different common-mode voltage levels and protects the low-side from voltage levels that can cause electrical damage and are potentially harmful to an operator.
The input of the AMC1400-Q1 is optimized for direct connection to a low-impedance shunt resistor or other low-impedance voltage sources with low signal levels. The excellent DC accuracy and low temperature drift support accurate current control in power factor correction (PFC) stages, DC/DC converters, traction inverters, and other applications that must operate at high common-mode voltages, high altitudes, or in environments with high pollution degrees. The amp is offered in a stretched 8-pin SOIC package, is AEC-Q100 qualified for automotive applications, and supports the temperature range of -40°C to +125°C.
- AEC-Q100-qualified for automotive applications:
- Temperature Grade 1 TA: -40°C to +125°C
- Input voltage range: ±250 mV
- Optimized for current measurements using shunt resistors
- Fixed gain: 8.2 V/V
- Low DC errors:
- Offset error: ±0.2 mV (max.)
- Offset drift: ±0.9 µV/°C (max.)
- Gain error: ±0.3% (max.)
- Gain drift: ±30 ppm/°C (max.)
- Nonlinearity: 0.03% (max.)
- Operation on the high side and low side: 3.3 V or 5 V
- Missing the high-side supply detection feature
- High CMTI: 100 kV/µs (min.)
- Low EMI meets CISPR-11 and CISPR-25 standards
- Safety-related certifications:
- Reinforced isolation: 10,600 VPK per DIN EN IEC 60747-17 (VDE 0884-17)
- Isolation: 7,500 VRMS for 1 minute per UL1577
- Functional safety-capable: documentation is available to aid functional safety system designs
- Shunt-resistor-based current sensing: HEV/EV charging piles, HEV/EV onboard chargers (OBC), HEV/EV DC/DC converters, and HEV/EV traction inverters
AMC1400-Q1 Reinforced Isolated Amp With High CMTI
| Image | Manufacturer Part Number | Description | Applications | Mounting Type | Grade | Available Quantity | Price | View Details | |
|---|---|---|---|---|---|---|---|---|---|
 |  | AMC1400QDWLRQ1 | AUTOMOTIVE, 250-MV INPUT, PRECIS | DC/DC Converter | Surface Mount | Automotive | 403 - Immediate | $8.00 | View Details |
Evaluation Board
| Image | Manufacturer Part Number | Description | Amplifier Type | Output Type | -3db Bandwidth | Available Quantity | Price | View Details | |
|---|---|---|---|---|---|---|---|---|---|
|  | AMC1400EVM | EVAL BOARD FOR AMC1400 | Isolation | Differential | - | 3 - Immediate | $50.60 | View Details |
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