ACNT-H79B, ACNT-H79A, ACNT-H790 Optical Isolation Amplifier in 15 mm Stretched SO-8 Package Data Sheet Description Features The ACNT-H79B/H79A/H790 isolation amplifiers are designed 0.5% gain accuracy (ACNT-H79B) for current and voltage sensing in electronic power converters 50 ppm/C low gain drift for applications including motor drives and renewable energy 0.6 mV Input offset voltage systems. In a typical motor drive implementation, current flows 0.05% excellent linearity through an external resistor and the resulting analog voltage 60 dB SNR drop is sensed by the isolation amplifier. A differential output 200 kHz wide bandwidth (Typ) voltage that is proportional to the current is created on the other side of the optical isolation barrier. 40C to +105C operating temperature range Advanced sigma-delta ( - ) A/D modulation technology For general applications, the ACNT-H79A (1% gain tolerance) 15 mm stretched SO-8 package and the ACNT-H790 (3% gain tolerance) are recommended. For high-precision applications, the ACNT-H79B (0.5% gain 0.5mm distance through insulation (DTI) tolerance) can be used. The ACNT-H79B/H79A/H790 offers 15 kV/s common-mode transient immunity wide creepage and clearance with a high common-mode Safety and regulatory approvals: transient immunity of 15kV/s. These features allows the IEC/EN/DIN EN 60747-5-5: 2262Vpeak working ACNT-H79B/H79A/H790 to provide the precision and stability insulation voltage needed to accurately monitor motor current in high noise UL 1577: 7500Vrms/1min double protection rating motor control environments, providing for smoother control CSA: Component Acceptance Notice 5 (less torque ripple) in various types of motor control applications. The ACNT-H79B/H79A/H790 operates from a single 5 V supply and provides excellent linearity and dynamic Applications performance of 60dB SNR. With 200 kHz bandwidth, 1.6 s fast response time, the ACNT-H79B/H79A/H790 captures transients Current/voltage sensing in AC/servo motor drives in short circuit and overload conditions. Mid voltage drives Solar inverters, wind turbine inverters Combined with superior optical coupling technology, the ACNT-H79B/H79A/H790 uses sigma-delta (- ) Industrial process control analog-to-digital modulation, chopper stabilized amplifiers, General purpose analog signal isolation and a fully differential circuit topology to provide unequaled Hall effect current transducer replacements isolation-mode noise rejection, low offset, high gain accuracy and stability. This performance is delivered in a compact, CAUTION It is advised that normal static precautions be auto-insertable 15 mm Stretched SO-8 package that meets taken in handling and assembly of this worldwide regulatory safety standards. component to prevent damage and/or degradation that may be induced by ESD. The components featured in this data sheet are not to be used in military or aerospace applications or environments. Broadcom - 1 -ACNT-H79B, ACNT-H79A, ACNT-H790 Functional Diagram Data Sheet Functional Diagram Figure 1 Functional Diagram I I DD1 DD2 V DD1 8 1 V DD2 V IN+ 2 + 7 V OUT+ + - V IN- 3 - 6 V OUT- GND1 4 5 GND2 SHIELD NOTE A 0.1 F bypass capacitor mus be connected between pins 1 and 4 and between pins 5 and 8. Table 1. Pin Description Pin No. Symbol Description 1 VDD1 Supply voltage for input side (4.5 V to 5.5 V), relative to GND1 2 VIN+ Positive input (200 mV recommended) 3 VIN Negative input (normally connected to GND1) 4 GND1 Input side ground 5 GND2 Output side ground 6 VOUT Negative output 7 VOUT+ Positive output 8 VDD2 Supply voltage for output side (3 V to 5.5 V), relative to GND2 Table 2. Ordering Information ACNT-H79B/H79A/H790 is UL recognized with 7500 Vrms/1 minute rating per UL 1577. Option (RoHS IEC/EN/DIN EN Part Number Package Surface Mount Tape & Reel Quantity Compliant) 60747-5-5 ACNT-H790 -000E 15 mm Stretched SO-8 X X 80 per tube ACNT-H79A -500E X X X 1000 per reel ACNT-H79B To order, choose a part number from the part number column and combine with the desired option from the option column to form an order entry. Example: ACNT-H79A-500E to order product of Surface Mount package in Tape and Reel packaging with IEC/EN/DIN EN 60747-5-5 Safety Approval and RoHS compliance. Broadcom - 2 -