AMC1311-Q1 Automotive 2-V input, reinforced isolated amplifier with high CMTI for voltage sensing | TI.com

AMC1311-Q1 (ACTIVE) Automotive 2-V input, reinforced isolated amplifier with high CMTI for voltage sensing

 

Learn about our isolated amplifier for voltage sensing  AMC1211-Q1.

Description

The AMC1311-Q1 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-Q1 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-Q1 is offered with two performance grade options: AMC1311-Q1 and AMC1311B-Q1.

Features

  • Qualified for Automotive Applications
  • AEC-Q100 Qualified With the Following Results:
    • Device Temperature Grade 1: –40°C to 125°C Ambient Operating Temperature Range
    • Device HBM ESD Classification Level 2
    • Device CDM ESD Classification Level C6
  • 2-V, High-Impedance Input Voltage Range Optimized for Isolated Voltage Measurement
  • Low Offset Error and Drift:
    • AMC1311B-Q1: ±1.5 mV (max), ±15 µV/°C (max)
    • AMC1311-Q1: ±9.9 mV (max), ±20 µV/°C (typ)
  • Fixed Gain: 1
  • Very Low Gain Error and Drift:
    • AMC1311B-Q1: ±0.3% (max), ±45 ppm/°C (max)
    • AMC1311-Q1: ±1% (max), ±30 ppm/°C (typ)
  • Low Nonlinearity and Drift: 0.01%, 1 ppm/°C (typ)
  • 3.3-V Operation on High-Side (AMC1311B-Q1)
  • 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

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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-Q1 Order now 2     1500     7000     15
75    
9.9
1.5    
20
3    
1
0.3    
30
5    
0.04     220
275    
Automotive     -40 to 125    
AMC1211-Q1 Order now 2     1000     4250     30     1.5     3     0.3     5     0.04     275     Automotive     -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-Q1 Order now ±0.05     1500     7000     75     0.1     0.15     0.3     15     0.03     280     Automotive     -40 to 125    
AMC1311 Order now 2     1500     7000     15
75    
9.9
1.5    
20
3    
1
0.3    
30
5    
0.04     220
275    
Catalog     -40 to 125
-55 to 125