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Broadcom ACPL 7970 500E DIP 8 Package Sigma Delta Modulator Providing Reinforced Insulation and Safety

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Broadcom ACPL 7970 500E DIP 8 Package Sigma Delta Modulator Providing Reinforced Insulation and Safety

Power Dissipation : -

Low Level Delay Time : -

High Level Delay Time : -

Input threshold current : -

Voltage - Supply : 3V~5.5V

Operating Temperature : -40℃~+105℃

CMTI(kV/us) : 25kV/us

Isolation Voltage(Vrms) : 5kV

Number of Channels : 1

Input Type : DC

Description : 3V~5.5V DC SOP-8-2.54mm Logic Output Optoisolators RoHS

Mfr. Part # : ACPL-7970-500E

Model Number : ACPL-7970-500E

Package : SOP-8-2.54mm

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ACPL-7970 Optically Isolated Sigma-Delta Modulator

Product Overview

The ACPL-7970 is a 1-bit, second-order sigma-delta (-) modulator that converts an analog input signal into a high-speed data stream with galvanic isolation. Leveraging optical coupling technology, it operates from a 5 V supply and offers a dynamic range of 78 dB with an appropriate digital filter. Its differential inputs of 200 mV (full scale 320 mV) are ideal for direct connection to shunt resistors or other low-level signal sources, particularly in applications like motor phase current measurement. The ACPL-7970 provides superior isolation performance with 0.5 mm minimum distance through insulation (DTI), ensuring reliable reinforced insulation and high working insulation voltage suitable for fail-safe designs. Offered in a DIP-8 package, it delivers reliability, small size, and excellent over-temperature performance for motor drive designers, serving as a cost-effective alternative to traditional current transducers.

Product Attributes

Brand: Avago Technologies
Package: DIP-8
Certifications: IEC/EN/DIN EN 60747-5-5, UL 1577, CSA

Technical Specifications

Specification	Value	Units	Conditions/Notes
Internal Clock	10	MHz
Resolution	16	Bits	(12 bits ENOB)
SNR	78	dB
Offset Drift vs. Temperature	6	mV/C	Maximum
Gain Error	1	%	Maximum
Linear Input Range	200	mV	(Full Scale 320 mV)
Digital Interface Supply Range	3 to 5.5	V
Operating Temperature Range	-40 to +105	C
Common-Mode Transient Immunity	25	kV/ms
Working Insulation Voltage (IEC/EN/DIN EN 60747-5-5)	891	Vpeak
Isolation Voltage (UL 1577)	5000	Vrms/1min
Supply Voltage (VDD1)	4.5 to 5.5	V	Recommended Operating
Supply Voltage (VDD2)	3 to 5.5	V	Recommended Operating
Full-Scale Differential Voltage Input Range	320	mV
Data Access Time After MCLK Rising Edge	40	ns	CL = 15 pF
Data Hold Time After MCLK Rising Edge	10	ns	CL = 15 pF
Input-Output Momentary Withstand Voltage	5000	Vrms	t = 1 min; TA = 25 C
Input-Output Resistance	10¹² to 10¹³		VI-O = 500 VDC
Input-Output Capacitance	1.4	pF	f = 1 MHz

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

2410121720_Broadcom-ACPL-7970-500E_C691937.pdf

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