AMC1301 Precision Reinforced Isolated Amplifier for Current Sensing |


Precision Reinforced Isolated Amplifier for Current Sensing


Learn about our new ±250-mV Input, high CMTI reinforced isolated amplifier for current sensing AMC1300.

The AMC1301 was awarded the 2017 ECN IMPACT Award in the Analog and Mixed Signal ICs category.


The AMC1301 device 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 7 kVPEAK according to VDE V 0884-10 and UL1577. Used in conjunction with isolated power supplies, this device prevents noise currents on a high common-mode voltage line from entering the local ground and interfering with or damaging sensitive circuitry.

The input of the AMC1301 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 AMC1301 simplify system-level design and diagnostics.

The AMC1301 is fully specified over the extended industrial temperature range of –40°C to +125°C and is available in a wide-body 8-pin SOIC (DWV) package. The AMC1301S is specified over the temperature range of –55°C to +125°C.


  • ±250-mV Input Voltage Range Optimized for Current Measurement Using Shunt Resistors
  • Low Offset Error and Drift:
    ±200 µV at 25°C, ± 3 µV/°C
  • Fixed Gain: 8.2
  • Very Low Gain Error and Drift:
    ±0.3% at 25°C, ± 50 ppm/°C
  • Very Low Nonlinearity and Drift:
    0.03%, 1 ppm/°C
  • 3.3-V Operation on High-Side and Low-Side
  • System-Level Diagnostic Features
  • Safety-Related Certifications:
    • 7000-VPK Reinforced Isolation per
      DIN V VDE V 0884-10 (VDE V 0884-10): 2006-12
    • 5000-VRMS Isolation for 1 Minute per UL1577
    • CAN/CSA No. 5A-Component Acceptance Service Notice,
      IEC 60950-1, and IEC 60065 End Equipment Standards
  • Fully Specified Over the Extended Industrial Temperature Range

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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)
AMC1301 AMC1301S AMC1300 AMC1301-Q1 AMC1302 AMC1311
1000     1000     1500     1000     1500     1500    
7000     7000     7000     7000     7000     7000    
210     210     230     210     280     220    
0.03     0.03     0.03     0.03     0.03     0.04    
15     15     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