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.