AMC1311 Precision Reinforced Isolated Amplifier With High CMTI for Current Sensing | TI.com

AMC1311 (ACTIVE)

Precision Reinforced Isolated Amplifier With High CMTI for Current Sensing

Precision Reinforced Isolated Amplifier With High CMTI for Current Sensing - AMC1311
 

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

All trademarks are the property of their respective owners.

View more

Parametrics Compare all products in Isolated Amplifiers

 
Common Mode Rejection Ratio (Typ) (dB)
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)
Rating
Operating Temperature Range (C)
AMC1311 AMC1311B AMC1300 AMC1301 AMC1301-Q1 AMC1302
    100     93     92     93    
1500     1500     1500     1000     1000     1500    
7000     7000     7000     7000     7000     7000    
220     275     230     210     210     300    
0.04     0.04     0.03     0.03     0.03     0.03    
15     75     15     15     15     75    
Catalog     Catalog     Catalog     Catalog     Automotive     Catalog    
-40 to 125     -55 to 125     -40 to 125     -40 to 125     -40 to 125     -55 to 125