Chipanalog CA-IS1204W Isolated Sensing IC

Chipanalog CA-IS1204W

The CA‐IS1204 device is series of precision isolated sigma‐ delta (Σ‐Δ) modulator and optimized for shunt resistor‐ based current sensing or other small signal measurement applications. The input current‐sense amplifier monitors current flow through a shunt (sense) resistor and the sigma‐delta modulator converts the analog input to a digital bit stream of 1's and 0's at a much higher frequency. The digital output stage of CA‐IS1204 provides uncoded CMOS bit‐stream output.

Features

• Differential Input Voltage Range
• ±250 mV
• Ultra‐Low Input Offset Voltage and Drift
• ±1mV (max) @ 25°C input offset voltage
• Low Gain Error and Drift
• ±2% (max) @ 25°C gain error
• Excellent AC Performance
• SNR: 85dB (typ)
• THD: ‐91dB (typ)
• Robust Isolation Barrier
• ±150 kV/μs typical CMTI
• Fault Diagnostic Functions Improve System Safety
• Wide Operating Temperature Range
• –40°C to 125°C
• 16‐pin wide‐body SOIC package
• Safety Regulatory Approvals
• 7070 V
• PK
• isolation per DIN EN IEC 60747‐17 (VDE0884‐17)
• 5000 VRMS isolation for 1 minute per UL 1577

Applications

• Industrial Motor Controls and Drives
• Uninterruptible Power Supplies (UPS)
• Isolated Power Supply

Device Information

Download Datasheet (PDF)