1 Features

• Linear input voltage range: ±250 mV

• Low DC errors:

– Offset error: ±100 μV (max)

– Offset drift: 1 μV/°C (max)

– Gain error: ±0.2 (max)

– Gain drift: ±40 ppm/°C (max)

• High CMTI: 100 kV/μs (min)

• Low EMI: Meets CISPR-11 and CISPR-25

standards

• Safety-related certifications:

– 7070-VPEAK reinforced isolation per DIN EN

IEC 60747-17 (VDE 0884-17): 2021-10

– 5000-VRMS isolation for 1 minute per UL1577

• Fully specified over the extended industrial

temperature range: –40°C to +125°C

• Supports operation down to –55°C

2 Applications

• Shunt-resistor-based current sensing and isolated

voltage measurements in:

– Traction inverters

– Onboard chargers

– DC/DC converters

– HEV/EV DC chargers

3 Description

The AMC1306M25E is a precision, delta-sigma (ΔΣ)

modulator with the output separated from the input

circuitry by an isolation barrier that is highly resistant

to magnetic interference. This barrier is certified to

provide reinforced isolation of up to 7070 VPEAK

according to the DIN EN IEC 60747-17 (VDE

0884-17) and UL1577 standards, and supports a

working voltage up to 1.5 kVRMS. The isolation barrier

separates parts of the system that operate on different

common-mode voltage levels and protects the lowvoltage

side from voltages that can cause electrical

damage or be harmful to an operator.

The input of the AMC1306M25E is optimized for

direct connection to shunt resistors or other low

voltage-level signal sources. The excellent DC

accuracy and low temperature drift supports accurate

current control in onboard chargers (OBC), DC/DC

converters, traction inverters, or other high-voltage

applications. 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 a data rate of 78 kSPS.

The AMC1306M25E is offered in a 8-pin, wide-body

SOIC package, is fully specified over the extended

industrial temperature range of –40°C to +125°C, and

supports operation down to –55°C.