AMC1311 2V Input, Reinforced Isolated Amplifier With High CMTI for Voltage Sensing | TI.com

AMC1311 (ACTIVE)

2V Input, Reinforced Isolated Amplifier With High CMTI for Voltage Sensing

 

Automotive AEC-Q100 Grade 1 qualified version available, see AMC1311-Q1.

Description

The AMC1311 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 0884-11 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 high-impedance input of the AMC1311 is optimized for connection to high-voltage resistive dividers or other voltage signal sources with high output resistance. The excellent performance of the device supports accurate, low temperature drift voltage or temperature sensing and control in closed-loop systems. The integrated missing high-side supply voltage detection feature simplifies system-level design and diagnostics.

The AMC1311 is offered with two performance grade options: the AMC1311B is specified over the extended industrial temperature range of –55°C to +125°C, and the AMC1311 for operation at –40°C to +125°C.

Features

  • 2-V, High-Impedance Input Voltage Range Optimized for Isolated Voltage Measurement
  • Low Offset Error and Drift:
    • AMC1311B: ±1.5 mV (max), ±15 µV/°C (max)
    • AMC1311: ±9.9 mV (max), ±20 µV/°C (typ)
  • Fixed Gain: 1
  • Very Low Gain Error and Drift:
    • AMC1311B: ±0.3% (max), ±45 ppm/°C (max)
    • AMC1311: ±1% (max), ±30 ppm/°C (typ)
  • Low Nonlinearity and Drift: 0.01%, 1 ppm/°C (typ)
  • 3.3-V Operation on High-Side (AMC1311B)
  • Missing High-Side Supply Indication
  • Safety-Related Certifications:
    • 7000-VPK Reinforced Isolation per DIN V VDE V 0884-11 (VDE V 0884-11): 2017-01
    • 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

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Parametrics

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Part number Order Input range (Vp-p) Isolation working voltage VIOWM (rms) (V) Isolation transient overvoltage VIOTM (peak) (V) CMTI (Min) (kV/µs) Input offset (+/-) (Max) (mV) Input offset drift (+/-) (Typ) (uV/C) Gain error (+/-) (Max) (%) Gain error drift (+/-) (Typ) (ppm/°C) Gain non-linearity (+/-) (Max) (%) Small signal bandwidth (Typ) (kHz) Rating Operating temperature range (C)
AMC1311 Order now 2     1500     7000     15     9.9     20     1     30     0.04     220     Catalog     -40 to 125    
AMC1311B Order now 2     1500     7000     75     9.9     3     0.3     5     0.04     275     Catalog     -55 to 125    
AMC1211-Q1 Order now 2     1000     4250     30     1.5     3     0.3     5     0.04     275     Automotive     -40 to 125    
AMC1300 Order now ±0.25     1500     7000     15     2.5     1.3     1     50     0.03     230     Catalog     -40 to 125    
AMC1301 Order now ±0.25     1000     7000     15     0.2     1     0.3     15     0.03     210     Catalog     -40 to 125    
AMC1301-Q1 Order now ±0.25     1000     7000     15     0.2     1     0.3     15     0.03     210     Automotive     -40 to 125    
AMC1302 Order now ±0.05     1500     7000     55     0.2     1     0.3     15     0.03     280     Catalog     -55 to 125    
AMC1311-Q1 Order now 2     1500     7000     15     9.9     20     1     30     0.04     220