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

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

Key Attributes
Model Number: ACPL-7970-500E
Product Custom Attributes
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
Mfr. Part #:
ACPL-7970-500E
Package:
SOP-8-2.54mm
Product Description

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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