Texas Instruments AMC1303M0520 Bedienungsanleitung

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AMC1303x Small, High-Precision,

Reinforced Isolated Delta-Sigma Modulators With Internal Clock

1 Features

•Pin-compatible family optimized for shunt-resistor-

based 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:

–7000V

PK

reinforced isolation per DIN EN IEC

60747-17 (VDE 0884-17)

–5000V

RMS

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 7000V

PK

according to the DIN EN IEC 60747-17 (VDE

0884-17) and UL1577 standards, and supports a

working voltage up to 1.5kV

RMS

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 high-

voltage 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.

Package Information

PART NUMBERPACKAGE

(1)

PACKAGE SIZE

(2)

AMC1303xDWV (SOIC, 8)5.85mm × 11.5mm

(1)For more information, see the Mechanical, Packaging, and

Orderable Information.

(2)The package size (length × width) is a nominal value and

includes pins, where applicable.

Note: no CLKOUT connection using AMC1303Ex,

pin 7 to be connected to DGND in this case

DOUT

CLKOUT

DVDD

DGND

AGND

AINP

AINN

AVDD

AMC1303Mx

HV+

HV-

Floating

Power Supply

3.0 V, 3.3 V, or 5.0 V

R

SHUNT

3.3 V or 5.0 V

Reinforced Isolation

SD-Cx

SD-Dx

TMS320F28x7x

Application Schematic

AMC1303E0510, AMC1303M0510, AMC1303E0520, AMC1303M0520

AMC1303E2510, AMC1303M2510, AMC1303E2520, AMC1303M2520

SBAS771D – JUNE 2017 – REVISED OCTOBER 2024

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. PRODUCTION DATA.

Produktspezifikationen