ACPL-C797-500E Avago Technologies US Inc., ACPL-C797-500E Datasheet
ACPL-C797-500E
Specifications of ACPL-C797-500E
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ACPL-C797-500E Summary of contents
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... The ACPL-C797 is a 1-bit, second-order sigma-delta (6-') modulator converts an analog input signal into a high- speed data stream with galvanic isolation based on optical coupling technology. The ACPL-C797 operates from power supply with dynamic range with an appro- priate digital filter. The differential inputs of ±200 mV (full scale ± ...
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... 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-C797-500E 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. Option datasheets are available. Contact your Avago sales representative or authorized distributor for information. ...
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... Figure 3. Recommended Pb-Free IR Profile Recommended reflow condition as per JEDEC Standard, J-STD-020 (latest revision). Non- Halide Flux should be used. Regulatory Information The ACPL-C797 is pending for approvals by the following organizations: IEC/EN/DIN EN 60747-5-5 Approved with Maximum Working Insulation Voltage V UL Approval under UL 1577, component recognition program CSA Approval under CSA Component Acceptance Notice #5, File CA 88324 ...
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Table 3. IEC/EN/DIN EN 60747-5-5 Insulation Characteristics Description Installation classification per DIN VDE 0110/1.89, Table 1 for rated mains voltage d 150 V rms for rated mains voltage d 300 V rms for rated mains voltage d 450 V rms ...
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Table 5. Absolute Maximum Ratings Parameter Storage Temperature Ambient Operating Temperature Supply Voltage [1,3] Steady-State Input Voltage [2] Two-Second Transient Input Voltage Digital Output Voltages Lead Solder Temperature Notes voltage the inputs ...
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Table 7. Electrical Specifications Unless otherwise noted -40°C to +105° – (single-ended connection); tested with Sinc IN Parameter Symbol STATIC CHARACTERISTICS Resolution Integral Nonlinearity INL Differential Nonlinearity DNL Offset Error V OS ...
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Table 8. Timing Specifications Unless otherwise noted -40°C to +105° Parameter Modulator Clock Output Frequency Data Access Time After MCLK Rising Edge t Data Hold Time After MCLK Rising Edge MCLK t A MDAT Figure 4. ...
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Typical Performance Plots Unless otherwise noted 25° 256 decimation ratio. 2.0 1.5 1.0 0.5 0.0 -0.5 -1.0 -1.5 -2.0 -55 -35 - Temperature (°C) Figure 5. Offset change vs. temperature ...
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V (mV) IN Figure 11 vs input at various temperatures DD2 DD2 IN 10.5 10.4 10.3 10.2 10.1 10.0 9.9 ...
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... Figure 14 shows the simplified equivalent circuit of the analog input. In the typical application circuit (Figure 19), the ACPL-C797 is connected in a single-ended input mode. Given the fully differential input structure, a differential input con- nection method (balanced input mode as shown in Figure 15) is recommended to achieve better performance ...
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... Other situations could cause transient voltages to the inputs include short circuit and overload conditions. The ACPL-C797 is tested with DC voltage –2 V and 2-second transient voltage – the analog inputs with no latch-up or damage to the device. ...
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... ACPL-C797 Figure 18. Typical application circuit with the HCPL-0872 12 work together with the ACPL-C797. With 256 decimation ratio and 16-bit word settings, the output data rate is 39 kHz (= 10 MHz/256). This filter can be implemented in an ASIC, an FPGA or a DSP. Some of the ADC codes with cor- responding input voltages are shown in Table 10 ...
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... R1 should be chosen to ensure sufficient current can be supplied from the existing floating supply. The voltage from the current sensing resistor or shunt (R applied to the input of the ACPL-C797 through an RC anti- aliasing filter (R2 and C2). And finally, a clock is connected to the ACPL-C797 and data are connected to the digital filter ...
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PC Board Layout The design of the printed circuit board (PCB) should follow good layout practices, such as keeping bypass capacitors close to the supply pins, keeping output signals away from input signals, the use of ground and power planes, ...
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... Shunt Connections The recommended method for connecting the isolated modulator to the shunt resistor is shown in Figure 19 the ACPL-C797 is connected to the positive terminal of the shunt resistor, while V power-supply return path functioning as the sense line to the negative terminal of the current shunt. This allows a single pair of wires or PC board traces to connect the isolated modulator circuit to the shunt resistor ...
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... Data subject to change. Copyright © 2005-2010 Avago Technologies. All rights reserved. AV02-2581EN - August 20, 2010 Voltage Sensing The ACPL-C797 can also be used to isolate signals with amplitudes larger than its recommended input range with the use of a resistive voltage divider at its input. The ...