NSI1400D-Q1 is a high-performance isolated amplifier with output separated from input based on the NOVOSENSE capacitive isolation technology. The device has a linear differential input signal range of ±250 mV (±320 mV full-scale). The differential input is ideally suited to shunt resistor-based current sensing in high voltage applications where isolation is required. The device has a fixed gain of 8.2 and provides a differential analog output. The low offset and gain drift ensure the accuracy over the entire temperature range. High common-mode transient immunity ensures that the device is able to provide accurate and reliable measurements even in the presence of high-power switching such as in motor control applications. The fail-safe functions including input common-mode overvoltage detection and missing VDD1 detection simplify system-level design and diagnostics.
Product Features
• Up to 5000 Vrms Insulation voltage
• ±250 mV linear Input Voltage Range
• Fixed Gain of 8.2
• Excellent DC Performance:
○ Offset Error: ±0.5 mV (Max)
○ Offset Error Drift: ±4 μV/°C (Max)
○ Gain Error: ±0.3% (Max)
○ Gain Error Drift: ±30 ppm/°C (Max)
○ Nonlinearity: ±0.05% (Max)
○ Nonlinearity Drift: ±1 ppm/°C (Typ)
• SNR: 72 dB (Typ, BW=100 kHz)
• Wide bandwidth: 220 kHz (Typ)
• High CMTI: 125 kV/μs (Typ)
• System-Level Diagnostic Features:
○ VDD1 monitoring
○ Input common-mode overvoltage detection
• Operation Temperature: -40°C ~125°C
• AEC-Q100 qualified for automotive applications: Grade 1
• RoHS-Compliant Packages: SOW8 wide body (SOP8 300mil)
Safety Certificate
• UL recognition: SOW8: 5000 Vrms for 1 minute per UL1577
• CQC certification per GB4943.1
• CSA component notice 5A
• DIN EN IEC 60747-17 (VDE 0884-17)
Application
• On Board Chargers
• DC/DC Converters
• Charging Piles
• Traction Inverters
Functional Block Diagram
All Resources
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