AMC1300 Reinforced Isolated Amplifier for Current Sensing |


Reinforced Isolated Amplifier for Current Sensing


Recommended alternative parts

  • AMC1302  -  Check our new ±50-mV Input, high CMTI reinforced isolated amplifier for current sensing


The AMC1300 is a precision, isolated amplifier with an output 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 5 kVRMS according to VDE V 0884-11 and UL1577. Used in conjunction with isolated power supplies, this isolated amplifier separates parts of the system that operate on different common-mode voltage levels and protects lower-voltage parts from damage.

The input of the AMC1300 is optimized for direct connection to shunt resistors or other low voltage-level signal sources. The excellent performance of the device supports accurate current control resulting in system-level power savings and, especially in motor control applications, lower torque ripple. The integrated common-mode overvoltage and missing high-side supply voltage detection features of the AMC1300 simplify system-level design and diagnostics.

The AMC1300 is offered with two performance grade options: the AMC1300B is specified over the extended industrial temperature range of –55°C to +125°C, and the AMC1300 for operation at –40°C to +125°C.


  • ±250-mV Input Voltage Range Optimized for Current Measurement Using Shunt Resistors
  • Low Offset Error and Drift:
    • AMC1300B: ±0.2 mV (max), ±3 µV/°C (max)
    • AMC1300: ±2 mV (max), ±4 µV/°C (max)
  • Fixed Gain: 8.2
  • Very Low Gain Error and Drift:
    • AMC1300B: ±0.3% (max), ±50 ppm/°C (max)
    • AMC1300: ±1% (max), ±50 ppm/°C (typ)
  • Low Nonlinearity and Drift: 0.03%, 1 ppm/°C (typ)
  • 3.3-V Operation on High-Side (AMC1300B)
  • System-Level Diagnostic Features
  • Safety-Related Certifications:
    • 7071-VPK Reinforced Isolation per DIN V VDE V 0884-11: 2017-01
    • 5000-VRMS Isolation for 1 Minute per UL1577
  • High CMTI on AMC1300B: 140 kV/µs (typ)

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Parametrics Compare all products in Isolated amplifiers

Isolation Working Voltage VIOWM (rms) (V)
Isolation Transient Overvoltage VIOTM (Peak) (V)
Small Signal Bandwidth (Typ) (kHz)
Gain Non-Linearity (+/-) (Max) (%)
CMTI (Min) (kV/µs)
Operating Temperature Range (C)
AMC1300 AMC1300B AMC1301 AMC1301-Q1 AMC1302 AMC1311
1500     1500     1000     1000     1500     1500    
7000     7000     7000     7000     7000     7000    
230     310     210     210     280     220    
0.03     0.03     0.03     0.03     0.03     0.04    
15     75     15     15     55     15    
Catalog     Catalog     Catalog     Automotive     Catalog     Catalog    
-40 to 125     -55 to 125     -40 to 125     -40 to 125     -55 to 125     -40 to 125