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Broadcom ACPL C797 500E Optically Isolated Sigma Delta Modulator for Motor Phase Current Measurement

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Broadcom ACPL C797 500E Optically Isolated Sigma Delta Modulator for Motor Phase Current Measurement

Power Dissipation : -

Low Level Delay Time : -

High Level Delay Time : -

Input threshold current : -

Voltage - Supply : 4.5V~5.5V;3V~5.5V

Operating Temperature : -40℃~+105℃

CMTI(kV/us) : 25kV/us

Isolation Voltage(Vrms) : 5kV

Number of Channels : 1

Input Type : DC

Description : DC SO-8 Logic Output Optoisolators RoHS

Mfr. Part # : ACPL-C797-500E

Model Number : ACPL-C797-500E

Package : SO-8

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Product Overview

The Broadcom ACPL-C797 is a 1-bit, second-order sigma-delta (-) modulator that converts an analog input signal into a high-speed data stream with galvanic isolation using optical coupling technology. It operates from a 5-V supply and offers an 80 dB dynamic range with an appropriate digital filter. The device features differential inputs ideal for direct connection to shunt resistors for applications like motor phase current measurement. With superior optical isolation and a 0.5-mm minimum distance through insulation (DTI), it provides reliable reinforced insulation and high working insulation voltage, suitable for fail-safe designs. Offered in a Stretched SO-8 (SSO-8) package, it delivers reliability, small size, and superior isolation performance for motor drive designers.

Product Attributes

Brand: Broadcom
Package: Stretched SO-8 (SSO-8)
Isolation Technology: Optical Coupling
Certifications: IEC/EN/DIN EN 60747-5-5, UL 1577, CSA

Technical Specifications

Parameter	Symbol	Value	Units	Conditions/Notes
Product Name	ACPL-C797	Optically Isolated Sigma-Delta Modulator
Resolution		16	Bits	Digital filter output set to 16 bits
Dynamic Range		80	dB	With appropriate digital filter
Analog Input Range (Recommended)		200	mV	Differential inputs
Analog Input Range (Full Scale)	FSR	320	mV	VIN = VIN+ VIN-
Data Rate		10	MHz	Typical
Supply Voltage (Analog Side)	VDD1	4.5 - 5.5	V	Recommended Operating Conditions
Supply Voltage (Digital Side)	VDD2	3 - 5.5	V	Recommended Operating Conditions
Operating Temperature Range	TA	-40 to +105	C
Common-Mode Transient Immunity	CMR	25	kV/s
Working Insulation Voltage	VIORM	1414	Vpeak	IEC/EN/DIN EN 60747-5-5
Isolation Voltage (UL 1577)	VISO	5000	Vrms/1 min
Distance Through Insulation (DTI)		0.5	mm	Minimum
Signal-to-Noise Ratio	SNR	78	dB	Min. (Typ. 78 dB)
Offset Drift vs. Temperature	TCVOS	3.5	V/C	Max.
Gain Error	GE	1	%	Max.
Internal Reference Voltage	VREF	320	mV	Typ.
Applications		Motor phase and rail current sensing, Power inverter current and voltage sensing, Industrial process control, Data acquisition systems, General purpose current and voltage sensing, Traditional current transducer replacements

2410010204_Broadcom-ACPL-C797-500E_C691942.pdf

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