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 the output separated from the input circuitry by a silicon dioxide (SiO2) barrier that is highly resistant to magnetic interference. This barrier is certified to provide galvanic isolation of up to 4250 VPEAK according to UL1577 and VDE V 0884-10. 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 performance of the device supports accurate current control, resulting in systemlevel 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 available in a wide-body, 8-pin SOIC package (DWV) and a gullwing, 8-pin SOP package (DUB).


  • Qualified for Automotive Applications
  • AEC-Q100 Qualified With the Following Results:
    • Temperature Grade 2: –40°C to 105°C
    • HBM ESD Classification Level H2
    • CDM ESD Classification Level C3B
  • ±250-mV Input Voltage Range Optimized for
    Shunt Resistors
  • Very Low Nonlinearity: 0.075% (max)
    with 5-V High-Side Supply
  • Low Offset Error: 1.5 mV (max)
  • Low Noise: 3.1 mVRMS (typical)
  • 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 (typical)
  • 3.3-V Operation on Low-Side
  • Certified Galvanic Isolation:
    • UL1577 and VDE V 0884-10 Approved
    • Isolation Voltage: 4250 VPEAK
    • Working Voltage: 1200 VPEAK
    • Transient Immunity: 10 kV/\xECs (min)
  • Typical 10-Year Lifespan at Rated Working
    Voltage (see Application Report, SLLA197

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Parametrics Compare all products in Isolated Amplifier

Common Mode Rejection Ratio (Typ) (dB)
Isolation Working Voltage VIOWM (rms) (V)
Isolation Transient Overvoltage VIOTM (Peak) (V)
Small Signal Bandwidth (Typ) (kHz)
Leakage Current at 240V/60Hz (Max) (uArms)
Gain Non-Linearity (+/-) (Max) (%)
CMTI (Min) (kV/µs)
Operating Temperature Range (C)
Approx. Price (US$)
AMC1200-Q1 AMC1100 AMC1200 AMC1301 ISO121 ISO122 ISO124
108     108     108     92     115     140     140    
4250     4250     4250     5000     4950     2121     2121    
5100     5100     5100     7000     5600     2400     2400    
100     100     100     210     60     50     50    
        0.5     0.5     0.5    
0.015     0.015     0.015     0.03     0.01     0.02     0.01    
10     2.5     10     15          
Automotive     Catalog     Catalog     Catalog     Catalog     Catalog     Catalog    
8SOIC     16CDIP SB     8PDIP
-40 to 105     -40 to 105     -40 to 105     -40 to 125     -55 to 125     -25 to 85     -25 to 85    
2.60 | 1ku     2.00 | 1ku     2.20 | 1ku       109.70 | 1ku     11.39 | 1ku     8.72 | 1ku    

Other qualified versions of AMC1200-Q1

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