3.0 V to 5.5 V

ADS8363

16-Bit ADC

AMC3301

OUTP

OUTN

VDD

DCDCgnd

DCDCout

INP

INN

DCDChgnd

Diagnostics

Resonator

and

Driver

LDO

LDOout

LDO

DCDCin

Rectifier

HLDOout

GND

HLDOin

I

CISPR11-compliant

PCB layout example

HGND

No ground layer

on high-side

to

Ground layer (blue)

on low-side

to ADC

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Folder

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An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,

intellectual property matters and other important disclaimers. ADVANCE INFORMATION for pre-production products; subject to

change without notice.

AMC3301

SBAS917 – AUGUST 2019

AMC3301 Precision, ±250-mV Input, Reinforced Isolated Amplifier

With Integrated DC/DC Converter

1

1 Features

1

•

3.3-V or 5-V single supply, CISPR11-compliant

operation with integrated DC/DC converter

•

±250-mV input voltage range optimized for current

measurement using shunt resistors

•

Fixed gain: 8.2

•

Low DC errors:

–

Initial offset voltage: ±0.2 mV (max)

–

Offset drift: ±5 µV/°C (max)

–

Initial gain error: ±0.4% (max)

–

Gain drift: ±60 ppm/°C (max)

–

Initial nonlinearity: ±0.075% (max)

•

System-level diagnostic features

•

Safety-related certifications:

–

0884-11 (VDE V 0884-11): 2017-01

–

•

High CMTI: 75 kV/µs (min)

2 Applications

•

Compact, isolated shunt-based current sensing in:

–

Photovoltaic inverters

–

Uninterruptible power supplies

–

Charging piles

–

Power delivery systems

–

Industrial robots

–

Compact frequency inverters

3 Description

The AMC3301 is a precision, isolated amplifier with a

fully integrated, isolated DC/DC converter that allows

single-supply operation from the low-side of the

device. The reinforced capacitive isolation barrier is

certified according to VDE V 0884-11 and UL1577

and separates parts of the system that operate on

different common-mode voltage levels and protects

lower-voltage parts from damage.

The input of the AMC3301 is optimized for direct

connection to shunt resistors or other low voltage-

level signal sources. The integrated isolated DC/DC

converter allows flexible placement of the shunt and

the AMC3301, and makes the device a unique

solution for space-constrained applications.

The excellent performance of the device supports

accurate current monitoring and control, resulting in

system-level power savings and, especially in motor

control applications, low torque ripple. The integrated

input

common-mode

overvoltage

and

DC/DC

converter operation fault detection features of the

AMC3301

simplify

system-level

design

and

diagnostics.

The

AMC3301

is

specified

over

the

extended

industrial temperature range of –40°C to +125°C.

Device Information(1)

PART NUMBER

PACKAGE

BODY SIZE (NOM)

AMC3301

SOIC (16)

10.30 mm × 7.50 mm

(1) For all available packages, see the orderable addendum at

the end of the data sheet.

Application Example