AMC1303x Isolated Delta-Sigma Modulators

Texas Instruments offers the AMC1303x small, high-precision, reinforced isolated delta-sigma (ΔΣ) modulators with internal clock

Image of Texas Instruments' AMC1303x Isolated Delta-Sigma ModulatorsTexas Instruments' AMC1303x (AMC1303x0510, AMC1303x0520, AMC1303x2510, and AMC1303x2520) are a family of precision, delta-sigma (ΔΣ) modulators with the output separated from the input circuitry by a capacitive double isolation barrier that is highly resistant to magnetic interference. This barrier is certified to provide reinforced isolation of up to 7000 VPK according to the DIN V VDE V 0884-11 and UL1577 standards. Used in conjunction with isolated power supplies, this isolated modulator separates parts of the system that operate on different common-mode voltage levels and protects lower-voltage parts from damage.

The input of the AMC1303x is optimized for direct connection to shunt resistors or other low voltage-level signal sources. The ±50 mV input voltage range option allows significant reduction of the power dissipation through the shunt. The output bitstream of the AMC1303x is synchronized to the internally generated clock and is Manchester coded (AMC1303Ex) or uncoded (AMC1303Mx). By using an integrated digital filter (such as those in the TMS320F2807x or TMS320F2837x microcontroller families) to decimate the bitstream, the device can achieve 16-bits of resolution with a dynamic range of 85 dB at an effective output data rate of 78 kSPS.

The bitstream output of the Manchester coded AMC1303Ex versions supports single-wire data and clock transfer without having to consider the setup and hold time requirements of the receiving device.

Features
  • Pin-compatible family optimized for shunt-resistor-based current measurements:
    • ±50 mV or ±250 mV input voltage ranges
    • Manchester coded or uncoded bitstream options
    • 10 MHz and 20 MHz clock options
  • Excellent DC performance:
    • Offset error: ±50 µV or ±100 µV (max)
    • Offset drift: ±1 µV/°C (max)
    • Gain error: ±0.2% (max)
    • Gain drift: ±40 ppm/°C (max)

Applications

  • Shunt-resistor-based current sensing and isolated voltage measurement in:
    • Industrial motor drives
    • Photovoltaic inverters
    • Uninterruptible and isolated power supplies
    • Power factor correction circuits
  • Transient immunity: 100 kV/µs (typ)
  • System-level diagnostic features
  • 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
  • Fully specified over the extended industrial temperature range: -40°C to +125°C

AMC1303x Isolated Delta-Sigma Modulators

ImageManufacturer Part NumberDescriptionAvailable QuantityPriceView Details
IC ISOLATED MOD 16BIT 78K 8SOICAMC1303E2510DWVIC ISOLATED MOD 16BIT 78K 8SOIC190 - Immediate$68.24View Details
IC ISOLATED MOD 16BIT 78K 8SOICAMC1303E2520DWVIC ISOLATED MOD 16BIT 78K 8SOIC113 - Immediate$73.02View Details
IC ISOLATED MOD 16BIT 78K 8SOICAMC1303M2510DWVIC ISOLATED MOD 16BIT 78K 8SOIC104 - Immediate$68.24View Details
IC ISOLATED MOD 16BIT 78K 8SOICAMC1303M2520DWVIC ISOLATED MOD 16BIT 78K 8SOIC122 - Immediate$73.02View Details
IC ISOLATED MOD 16BIT 78K 8SOICAMC1303E0510DWVIC ISOLATED MOD 16BIT 78K 8SOIC51 - Immediate$70.63View Details
IC ISOLATED MOD 16BIT 78K 8SOICAMC1303E0520DWVIC ISOLATED MOD 16BIT 78K 8SOIC35 - Immediate$75.41View Details
IC ISOLATED MOD 16BIT 78K 8SOICAMC1303M0510DWVIC ISOLATED MOD 16BIT 78K 8SOIC203 - Immediate$70.63View Details
IC ISOLATED MOD 16BIT 78K 8SOICAMC1303M0520DWVIC ISOLATED MOD 16BIT 78K 8SOIC207 - Immediate$75.41View Details
IC ISOLATED MOD 16BIT 78K 8SOICAMC1303E0510DWVRIC ISOLATED MOD 16BIT 78K 8SOIC0 - Immediate$52.85View Details
IC ISOLATED MOD 16BIT 78K 8SOICAMC1303E0520DWVRIC ISOLATED MOD 16BIT 78K 8SOIC0 - Immediate$56.31View Details
IC ISOLATED MOD 16BIT 78K 8SOICAMC1303E2510DWVRIC ISOLATED MOD 16BIT 78K 8SOIC0 - Immediate$51.04View Details
IC ISOLATED MOD 16BIT 78K 8SOICAMC1303E2520DWVRIC ISOLATED MOD 16BIT 78K 8SOIC0 - Immediate$54.58View Details
IC ISOLATED MOD 16BIT 78K 8SOICAMC1303M0510DWVRIC ISOLATED MOD 16BIT 78K 8SOIC0 - Immediate$52.85View Details
IC ISOLATED MOD 16BIT 78K 8SOICAMC1303M0520DWVRIC ISOLATED MOD 16BIT 78K 8SOIC733 - Immediate$63.88View Details
IC ISOLATED MOD 16BIT 78K 8SOICAMC1303M2510DWVRIC ISOLATED MOD 16BIT 78K 8SOIC670 - Immediate$57.87View Details
IC ISOLATED MOD 16BIT 78K 8SOICAMC1303M2520DWVRIC ISOLATED MOD 16BIT 78K 8SOIC1000 - Immediate$61.90View Details

Evaluation Module

ImageManufacturer Part NumberDescriptionAvailable QuantityPriceView Details
EVAL BOARD FOR AMC1303AMC1303EVMEVAL BOARD FOR AMC13033 - Immediate$484.04View Details
Published: 2017-08-30