Data Sheet ACPL-C87B, ACPL-C87A, ACPL-C870 Precision Optically Isolated Voltage Sensor Description Features The Broadcom ACPL-C87B/C87A/C870 voltage sensors Advanced sigma-delta (-) modulation technology are optical isolation amplifiers designed specifically for Unity gain 1 V/V, 0.5% high gain accuracy voltage sensing. Its 2V input range and high 1-G input (ACPL-C87B) impedance, makes it well suited for isolated voltage sensing 1-G input impedence requirements in electronic power converters applications, 0 to 2V nominal input range including motor drives and renewable energy systems. In a 35 ppm/C low gain frift typical voltage sensing implementation, a resistive voltage 21 V /C offset voltage drift divider is used to scale the DC-link voltage to suit the input 0.1% non-linearity max range of the voltage sensor. A differential output voltage that Active-high shutdown pin is proportional to the input voltage is created on the other 100-kHz wide bandwidth side of the optical isolation barrier. 3V to 5.5V wide supply range for output side For general applications, the ACPL-C87A (1% gain 40C to +105C operating temperature range tolerance) and the ACPL-C870 (3% gain tolerance) are 15 kV/s common-mode transient immunity recommended. For high precision requirements, the Compact, auto-insertable stretched SO-8 package ACPL-C87B (0.5% gain tolerance) can be used. The Safety and regulatory approvals: ACPL-C87B/C87A/C870 family operates from a single 5V IEC/EN/DIN EN 60747-5-5: 1414 V working peak supply and provides excellent linearity. An active-high insulation voltage shutdown pin is available which reduces the IDD1 current to UL 1577: 5000 V /1 min double protection rating rms only 15A, making them suitable for battery-powered and CSA: Component Acceptance Notice 5 other power-sensitive applications. Applications The high common-mode transient immunity (15 kV/ms) of Isolated voltage sensing in AC and servo motor drives the ACPL-C87B/C87A/C870 provides the precision and Isolated DC-bus voltage sensing in solar inverters, wind stability needed to accurately monitor DC-link voltage in turbine inverters high noise environments. Combined with superior optical Isolated sensor interfaces coupling technology, the ACPL-C87B/C87A/C870 implements sigma-delta (-) modulation, chopper Signal isolation in data acquisition systems stabilized amplifiers, and differential outputs to provide General purpose voltage isolation unequaled isolation-mode noise rejection, low offset, high CAUTION It is advised that normal static precautions be gain accuracy and stability. This performance is delivered in taken in handling and assembly of this a compact, auto-insertable Stretched SO-8 (SSO-8) component to prevent damage and/or package that meets worldwide regulatory safety standards. degradation which may be induced by ESD. Broadcom AV02-3563EN December 18, 2017ACPL-C87B, ACPL-C87A, ACPL-C870 Data Sheet Precision Optically Isolated Voltage Sensor Functional Diagram Table 1: Pin Description Pin No. Symbol Description Figure 1: Functional Diagram 1V Supply voltage for input side (4.5V DD1 to 5.5V), relative to GND1 V 1 8 V DD1 DD2 2V Voltage input IN 7 V V 2 OUT+ IN 3 SHDN Shutdown pin (Active High) 4 GND1 Input side ground 6 V SHDN 3 OUT 5 GND2 Output side ground GND1 4 5 GND2 SHIELD 6V Negative output OUT 7V Positive output OUT+ NOTE: A 0.1-F bypass capacitor must be connected 8V Supply voltage for output side (3V DD2 between pins 1 and 4 and between pins 5 and 8. to 5.5V), referenced to GND2 Ordering Information ACPL-C87B/C87A/C870 is UL recognized with 5000 V /1 minute rating per UL 1577. rms Table 2: Ordering Information Option (RoHS IEC/EN/DIN EN Part Number Compliant) Package Surface Mount Tape and Reel 60747-5-5 Quantity ACPL-C87B -000E Stetched SO-8 X X 80 per tube ACPL-C87A -500E X X X 1000 per reel ACPL-C870 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: ACPL-C87A-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 AV02-3563EN 2