AMC1301DWVR Audio Power Amplifier IC Isolation Amplifiers +/-250-mV Input 3-us Delay

AMC1301DWVR Audio Power Amplifier IC Isolation Amplifiers +/-250-mV Input 3-us Delay

1 Features

• ±250-mV Input Voltage Range Optimized for Current Measurement Using Shunt Resistors

• Low Offset Error and Drift: ±200 μV at 25°C, ± 3 μV/°C

• Fixed Gain: 8.2

• Very Low Gain Error and Drift:

  ±0.3% at 25°C, ± 50 ppm/°C

• Very Low Nonlinearity and Drift:

  0.03%, 1 ppm/°C

• 3.3-V Operation on High-Side and Low-Side

• System-Level Diagnostic Features

• Safety-Related Certifications:

  • – 7000-VPK Reinforced Isolation per
    DIN V VDE V 0884-10 (VDE V 0884-10): 2006-12

  • – 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

• Fully Specified Over the Extended Industrial Temperature Range

2 Applications

• Shunt-Resistor-Based Current Sensing In:

  • – Motor Drives

  • – Frequency Inverters

  • – Uninterruptible Power Supplies

• Isolated Voltage Sensing

3 Description

The AMC1301 device 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 0884-10 and UL1577. 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 AMC1301 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 savings and, especially in motor control applications, lower torque ripple. The integrated common-mode overvoltage and missing high-side supply voltage detection features of the AMC1301 simplify system-level design and diagnostics.

The AMC1301 is fully specified over the extended industrial temperature range of –40°C to +125°C and is available in a wide-body 8-pin SOIC (DWV) package. The AMC1301S is specified over the temperature range of –55°C to +125°C.

Device Information