The NSI1303E is a high performance Σ-Δ modulator with output separated from input based on the NOVOSENSE capacitive isolation technology. The device has a linear differential input signal range of ±50mV (±64mV full-scale) or ±250mV (±320mV full-scale). The differential input is ideally suited to shunt resistor-based current sensing in high voltage applications where isolation is required. The analog input is amplified and continuously sensed by a second-order Σ-Δ modulator and converted to a high speed, single bit data stream. The output bit-stream of the NSI1303E is synchronized to the internally generated clock and is Manchester coded. NSI1303E can achieve 16 bits resolution by using an appropriate digital filter (such as sinc3 filter) to decimate the bitstream from internal clock. The Manchester coded output supports single-wire data and clock transfer without the setup and hold time limitations of the receiving device. The fail-safe functions including input common-mode overvoltage detection and missing AVDD detection simplify system-level design and diagnostics.
Product Features
? Up to 5700Vrms Insulation Voltage
? 10MHz and 20MHz internal clock frequency options
? ±50mV or ±250mV Linear Input Voltage Range
? Excellent DC Performance:
○ Offset Error: ±50μV or ±100μV (Max)
○ Offset Drift: ±1μV/°C (Max)
○ Gain Error: ±0.2% (Max)
○ Gain Drift: ±40ppm/°C (Max)
? High CMTI: 150kV/μs (Typ)
? System-Level Diagnostic Features:
○ AVDD monitoring
○ Input common-mode overvoltage detection
? Operation Temperature: -40°C~125°C
? RoHS-Compliant Packages: SOP8(300mil)
Safety Certificate
? UL recognition per UL1577
? CQC certification per GB4943.1
? CSA component notice 5A
? DIN EN IEC 60747-17 (VDE 0884-17)
Application
? Shunt Current Monitoring
? AC Motor Controls
? Uninterruptible Power Suppliers
? Automotive Onboard Chargers
Functional Block Diagram
For more product information, please contact us.
