1 Features
• Pin-compatible family optimized for shunt-resistorbased
current measurements:
– ±50mV or ±250mV input voltage ranges
– Manchester-coded or uncoded bitstream
options
– 10MHz and 20MHz clock options
• Excellent DC performance:
– Offset error: ±50μV or ±100μV (max)
– Offset drift: ±1μV/°C (max)
– Gain error: ±0.2% (max)
– Gain drift: ±40ppm/°C (max)
• Transient immunity: 100kV/μs (typ)
• System-level diagnostic features
• Safety-related certifications:
– 7000VPK reinforced isolation per DIN EN IEC
60747-17 (VDE 0884-17)
– 5000VRMS isolation for 1 minute per UL1577
– CAN/CSA no. 5A-component acceptance
service notice and IEC 62368-1 end equipment
standard
• Fully specified over the extended industrial
temperature range: –40°C to +125°C

2 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

3 Description
The AMC1303 (AMC1303x0510, AMC1303x0520,
AMC1303x2510, and AMC1303x2520) is a family
of precision, isolated delta-sigma (ΔΣ) modulators.
The output is separated from the input circuitry by
a capacitive isolation barrier that is highly resistant
to magnetic interference. This barrier is certified
to provide reinforced isolation of up to 7000VPK
according to the DIN EN IEC 60747-17 (VDE
0884-17) and UL1577 standards, and supports a
working voltage up to 1.5kVRMS
The input of the AMC1303 device is optimized
for direct connection to shunt resistors or other,
low-impedance signal sources. The small size,
high DC accuracy, low temperature drift, and high
common-mode transient immunity (CMTI) support
accurate isolated current sensing in noisy highvoltage
applications.
The output bitstream of the AMC1303 is synchronized
to the internally generated clock and is Manchester
coded (AMC1303Ex) or uncoded (AMC1303Mx).
Combined with a digital low-pass filter (such as a
Sinc-filter) the device achieves 85dB of dynamic
range at an effective output data rate of 78kSPS.