Data Sheet ACNT-H87B, ACNT-H87A, ACNT-H870 Precision Optically Isolated Voltage Sensor in a 15-mm Stretched SO-8 Package Overview Features The ACNT-H87B/H87A/H870 voltage sensors are optical Advanced sigma-delta () modulation technology isolation amplifiers designed specifically for voltage sensing. Unity gain 1V/V, 0.5% high gain accuracy (ACNT-H87B) Its 2V input range and high 1-GW input impedance makes it 1 G input impedance well suited for isolated voltage sensing requirements in 0 to 2V nominal input range electronic power converters applications including motor 35 ppm/C low gain drift drives and renewable energy systems. In a typical voltage 21 V /C offset voltage drift sensing implementation, a resistive voltage divider is used to 0.1% non-linearity maximum scale the DC-link voltage to suit the input range of the voltage Active-high shutdown pin sensor. A differential output voltage that is proportional to the 100 kHz wide bandwidth input voltage is created on the other side of the optical 3V to 5.5V wide supply range for output side isolation barrier. 40C to +110C operating temperature range For general applications, the ACNT-H87A (1% gain 15 kV/s common-mode transient immunity tolerance) and the ACNT-H870 (3% gain tolerance) are Compact, auto-insertable 15-mm Stretched SO-8 recommended. For high precision requirements, the ACNT- package H87B (0.5% gain tolerance) can be used. The ACNT-H87B/ Safety and regulatory approvals: H87A/H870 family operates from a single 5V supply and IEC/EN/DIN EN 60747-5-5: 2262 V working peak provides excellent linearity. An active-high shutdown pin is insulation voltage available, which reduces the I current to only 15 A, DD1 UL 1577: 7500 V /1 min double protection rating making them suitable for battery-powered and other power- rms sensitive applications. CSA: Component Acceptance Notice 5 The high common-mode transient immunity (15 kV/s) of the Applications ACNT-H87B/H87A/H870 provides the precision and stability needed to accurately monitor DC-link voltage in high noise Isolated voltage sensing in AC and servo motor drives environments. Combined with superior optical coupling Isolated DC-bus voltage sensing in solar inverters, wind technology, the ACNT-H87B/H87A/H870 implements sigma- turbine inverters delta () modulation, chopper stabilized amplifiers, and Isolated sensor interfaces differential outputs to provide unequaled isolation-mode noise Signal isolation in data acquisition systems rejection, low offset, high gain accuracy and stability. This General-purpose voltage isolation performance is delivered in a compact, auto-insertable 15- mm Stretched SO-8 (SSO-8) package that meets worldwide regulatory safety standards. CAUTION It is advised that normal static precautions be taken in handling and assembly of this component to prevent damage and/or degradation which may be induced by ESD. Broadcom ACNT-H87x-DS101 October 8, 2019Precision Optically Isolated Voltage Sensor in a ACNT-H87B, ACNT-H87A, ACNT-H870 Data Sheet 15-mm Stretched SO-8 Package Functional Diagram Pin Description Figure 1: Functional Diagram Pin No. Symbol Description 1 VDD1 Supply voltage for input side (4.5V to 5.5V), relative to GND1 V 1 8 V DD1 DD2 2 VIN Voltage input 3 SHDN Shutdown pin (Active High) 7 V V 2 OUT+ IN 4 GND1 Input side ground 5 GND2 Output side ground 6 VOUT Negative output 6 V SHDN 3 OUT 7 VOUT+ Positive output 8 VDD2 Supply voltage for output side GND1 4 5 GND2 (3V to 5.5V), referenced to SHIELD GND2 NOTE: A 0.1-F bypass capacitor must be connected between pins 1 and 4 and between pins 5 and 8. Ordering Information ACNT-H87B/H87A/H870 is UL recognized with 7500 V /1 minute rating per UL 1577. rms Option (RoHS IEC/EN/DIN EN Part Number Compliant) Package Surface Mount Tape and Reel 60747-5-5 Quantity ACNT-H87B -000E 15-mm Stretched X X 80 per tube ACNT-H87A SO-8 -500E X X X 1000 per reel ACNT-H870 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-H87A-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. Contact your Broadcom sales representative or authorized distributor for information. Broadcom ACNT-H87x-DS101 2