ACPL-7970-000E Avago Technologies US Inc., ACPL-7970-000E Datasheet
ACPL-7970-000E
Specifications of ACPL-7970-000E
Related parts for ACPL-7970-000E
ACPL-7970-000E Summary of contents
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... The ACPL-7970 is a 1-bit, second-order sigma-delta (∑-') modulator converts an analog input signal into a high- speed data stream with galvanic isolation based on optical coupling technology. The ACPL-7970 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-7970-500E 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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Package Outline Drawings Standard DIP Package 9.80 ± 0.25 (0.386 ± 0.010 7970 YYWW 1.19 (0.047) MAX. 3.56 ± 0.13 (0.140 ± 0.005) 1.080 ± 0.320 (0.043 ± 0.013) Note: Initial or continued ...
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... Note: Foating lead protrusion is 0.5 mm (20 mils) max. 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-7970 is pending for approvals by the following organizations: IEC/EN/DIN EN 60747-5-5 Approved with Maximum Working Insulation Voltage V = 891 Vpeak. ...
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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 ≤ 150 Vrms for rated mains voltage ≤ 300 Vrms for rated mains voltage ≤ 450 V rms for rated ...
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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 ...
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Table 7. Electrical Specifications Unless otherwise noted -40° +105° – (single-ended connection); tested with Sinc IN Parameter Symbol STATIC CHARACTERISTICS Resolution Integral Nonlinearity INL Differential Nonlinearity DNL Offset Error ...
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Table 8. Timing Specifications Unless otherwise noted -40° +105° Parameter Modulator Clock Output Frequency Data Access Time After MCLK Rising Edge Data Hold Time After MCLK Rising Edge MCLK t A MDAT Figure ...
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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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DD2 7.0 6.0 5.0 4.0 3.0 2.0 -400 -300 -200 -100 0 V (mV) IN Figure 11 vs input at various temperatures. DD2 DD2 IN 10.5 10.4 10.3 ...
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... IN signals in highly noisy environments, for example mea- surement of motor phase currents in power inverters. With 0.5 mm minimum DTI, the ACPL-7970 provides reliable double protection and high working insulation voltage, which is suitable for fail-safe designs. This out- standing isolation performance is superior to alternatives including devices based on capacitive- or magnetic- coupling with DTI in micro-meter range ...
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... Other situations could cause transient voltages to the inputs include short circuit and overload conditions. The ACPL-7970 is tested with DC voltage and 2-second transient voltage the analog inputs with no latch-up or damage to the device. Modulator Data Output ...
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... ADC code can be calculated with (V IN work together with the ACPL-7970. 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 5 ...
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... Microwire protocols, allowing direct connection to a microcontroller. Instead of a digital filter implemented in software, the HCPL-0872 can be used together with the ACPL-7970 to form an isolated programmable two-chip A/D converter. Available in an SO-16 surface-mount package, the Digital Interface IC has features include five different conversion modes (combinations of speed and resolution), three different pre-trigger modes (allows conversion time < ...
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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-7970 through an RC anti- aliasing filter (R2 and C2). And finally, a clock is connected to the ACPL-7970 and data are connected to the digital filter ...
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If the power dissipation in the shunt is too high, the resis- tance of the shunt can be decreased below the maximum value to decrease power dissipation. The minimum value of the shunt is limited by precision and accuracy require- ...
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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-7970 is connected to the positive terminal of the shunt resistor, while V – is shorted to GND1, with the IN 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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... Voltage Sensing The ACPL-7970 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 only restrictions are that the impedance of the divider be relatively small (less than 1 k:) so that the input resistance (24 k:) and input bias current (0 ...