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CA-IS3521HGP

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CA-IS3521HGP

Ordering Code CA-IS3521HGP Category

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Digital isolators for electricity meter

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CA-IS3521HGP

Order Code CA-IS3521HGP Category

Description

The CA-IS352X chip is a digital isolator chip specifically developed for smart meters (IR46). This series features surge protection up to 10 kV and ESD protection up to 8 kV, isolation withstand voltage up to 5 kVRMS, and CMTI up to ±150 kV/µs.
The CA-IS352X chip allows customers to choose between open-drain or push-pull output models based on their application scenarios.
The CA-IS3520 has two forward channels, while the CA-IS3521 and CA-IS3522 have one forward and one reverse channel, as detailed in Figure 7-1. All devices have a fail-safe mode option; the output is high by default when the input power is lost or the signal is lost.
The CA-IS352X devices feature high insulation capability, helping to prevent noise and surges from the data bus or other circuits from entering the local ground terminal, causing interference or damage to sensitive circuits. Simultaneously, high CMTI capability ensures correct transmission of digital signals. The CA-IS352X devices are available in 8-pin narrow-body SOIC, 8-pin wide-body SOIC, and 16-pin wide-body SOIC packages. Narrow-body packages support an insulation withstand voltage of 3.75 kVRMS, while wide-body packages support insulation withstand voltages up to 5 kVRMS. 
Application
  • Single-phase and three-phase smart meters
  • Data collector, concentrator, dedicated transformer terminal
  • Circuit breakers, miniature circuit breakers and various digital circuit breakers
  • Other intelligent digital display instruments 
Characteristic
  • Compliant with IR46 standards
  • Signal transmission rate: DC ~ 10 Mbps
  • Wide power supply voltage range: 2.375 V ~ 5.5 V
  • Temperature range: -55 °C ~ 125 °C
  • No startup initialization required
  • Push-pull output and open-drain output are both available.
  • Excellent electromagnetic immunity
  • CMTI: ±150 kV/µS
  • Surge: 10 kV
  • ESD: 8 kV HBM
  • Ultra-low power consumption
    • Current is 1.6 mA/channel (@5 V, 1 Mbps)
    • Current is 2.5 mA/channel (@5 V, 10 Mbps)
  • Precise timing
    • 10 ns propagation delay
    • 1 ns pulse width distortion
    • 2 ns inter-channel delay deviation
  • Isolation voltage up to 5 kVRMS
  • Fence lifespan: >40 years
  • Schmitt trigger input
  • RoHS compliant packaging
    • SOIC8 (S)
    • SOIC8-WB (G)
    • SOIC16-WB (W)