Automotive Catalog, 4kV peak Isolated Amplifier for Current Shunt Measurements - AMC1200-Q1


Automotive Catalog, 4kV peak Isolated Amplifier for Current Shunt Measurements

Automotive Isolated Current Sense Solution

Check out this total solution for single channel isolated current sense created for automotive applications including high voltage DC/DC power supplies and 3-phase BLDC motor solutions. TI’s solution includes off-the-shelf isolated power eliminating the need for custom magnetics. The Isolated Current Sense Solution enables a small form factor and includes a reference design, development kit, tools and support for faster time-to-market.

Automotive Isolated Current Sense Solution - System Block Diagram
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  • SN6501-Q1 - Automotive Transformer Driver for Isolated Power Supplies
  • AMC1200-Q1 – Automotive Catalog, 4kV peak Isolated Amplifier for Current Shunt Measurements
  • TPS76950-Q1 – Automotive Catalog Ultralow-Power 100-mA Low-Dropout Linear Regulator

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The AMC1200-Q1 is a precision isolation amplifier with an output separated from the input circuitry by a silicon dioxide (SiO2) barrier that is highly resistant to magnetic interference. This barrier has been certified to provide galvanic isolation of up to 4000 VPEAK according to UL1577 and IEC60747-5-2. 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 AMC1200-Q1 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 saving and, especially in motor-control applications, lower torque ripple. The common-mode voltage of the output signal is automatically adjusted to either the 3-V or 5-V low-side supply.

The AMC1200-Q1 is fully specified over the extended industrial temperature range of –40°C to 105 °C and is available in the SMD-type, gullwing-8 package.


  • AEC-Q100 Qualified With the Following Results:
    • Device Temperature Grade 2: –40°C to 105°C
      Ambient Operating Temperature Range
    • Device HBM ESD Classification Level H2
    • Device CDM ESD Classification Level C3B
  • ±250-mV Input Voltage Range Optimized for Shunt Resistors
  • Very Low Nonlinearity: 0.075% Max. at 5 V
  • Low Offset Error: 1.5 mV Max.
  • Low Noise: 3.1 mVRMS Typ.
  • Low High-Side Supply Current: 8 mA Max. at 5 V
  • Input Bandwidth: 60 kHz Min.
  • Fixed Gain: 8 (0.5% Accuracy)
  • High Common-Mode Rejection Ratio: 108 dB
  • 3.3-V Operation on Low-Side
  • Certified Galvanic Isolation:
    • UL1577 and IEC60747-5-2 Approved
    • Isolation Voltage: 4000 VPEAK
    • Working Voltage: 1200 VPEAK
    • Transient Immunity: 10 kV/µs Min.
  • Typical 10-Year Lifespan at Rated Working
    Voltage (see Application Report SLLA197)
  • Fully Specified Over the Extended Industrial
    Temperature Range

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Parametrics Compare all products in Isolation Amplifier

Isolation Mode Rejection 60Hz (Typ) (dB)
Isolation Voltage Cont Peak (DC) (V)
Isolation Voltage Pulse/Test Peak (V)
Small Signal Bandwidth (Typ) (kHz)
Gain Non-Linearity (+/-) (Max) (%)
CMTI (Min) (kV/µs)
Operating Temperature Range (C)
Approx. Price (US$)
AMC1200-Q1 AMC1200
108     108    
4250     4250    
5100     5100    
100     100    
0.015     0.015    
10     10    
-40 to 105     -40 to 105    
8SOP     8SOIC
2.79 | 1ku     2.20 | 1ku    

Other qualified versions of AMC1200-Q1

Version Part Number Definition
Catalog AMC1200 TI's standard catalog product
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