如题所述
虽然脚位有相似的，但应用还是有区别的，最好不要直接代换。如实在没办法买到7840那就改一下参数试试吧！
A7860:
12-bit Linearity
200 ns Conversion Time
(Pre-Trigger Mode 2 with HCPL-0872)
12-bit Effective Resolution with 5 s Signal Delay
(14-bit with 102 s) (with HCPL-0872)
Fast 3 s Over-Range Detection (with HCPL-0872)
± 200 mV Input Range with Single 5 V Supply
1% Internal Reference Voltage Matching
Offset Calibration (with HCPL-0872)
-40°C to +85°C Operating Temperature Range
15 kV/s Isolation Transient Immunity
Safety Approval: UL 1577, CSA and IEC/EN/DIN EN
60747-5-2
The HCPL-7860/HCPL-786J Optically Isolated Modulator
and HCPL-0872 Digital Interface IC or digital filter together
form an isolated programmable two-chip analog-to-digital
converter. The isolated modulator allows direct measurement
of motor phase currents in power inverters.
Symbol Description Symbol Description
1: VDD1 Supply voltage input (4.5 V to 5.5 V)
2: VIN+ Positive input (± 200 mV recommended)
3: VIN- Negative input (normally connected to GND1)
4: GND1 Input ground
5: GND2 Output ground
6: MDAT Serial data output
7: MCLK Clock output (10 MHz typical)
8: VDD2 Supply voltage input (4.5 V to 5.5 V)
A8740:
The HCPL-7860/HCPL-786J Optically Isolated Modulator
and HCPL-0872 Digital Interface IC or digital filter together
form an isolated programmable two-chip analog-to-digital
converter. The isolated modulator allows direct measurement
of motor phase currents in power inverters.
1: VDD1 Supply voltage input (4.5 V to 5.5 V)
2: VIN+ Positive input (± 200 mV recommended)
3: VIN- Negative input (normally connected to GND1)
4: GND1 Input ground
5: GND2 Output ground
6: V0UT+
7: VOUT-
8: VDD2 Supply voltage input (4.5 V to 5.5 V)
Supply Voltages VDD1, VDD2 0.0 5.5 V
Steady-State Input Voltage VIN+, VIN- -2.0 VDD1 +0.5 V
2 Second Transient Input Voltage -6.0
Output Voltages VOUT+, VOUT- -0.5
VDD2 +0.5 V
A7860:
12-bit Linearity
200 ns Conversion Time
(Pre-Trigger Mode 2 with HCPL-0872)
12-bit Effective Resolution with 5 s Signal Delay
(14-bit with 102 s) (with HCPL-0872)
Fast 3 s Over-Range Detection (with HCPL-0872)
± 200 mV Input Range with Single 5 V Supply
1% Internal Reference Voltage Matching
Offset Calibration (with HCPL-0872)
-40°C to +85°C Operating Temperature Range
15 kV/s Isolation Transient Immunity
Safety Approval: UL 1577, CSA and IEC/EN/DIN EN
60747-5-2
The HCPL-7860/HCPL-786J Optically Isolated Modulator
and HCPL-0872 Digital Interface IC or digital filter together
form an isolated programmable two-chip analog-to-digital
converter. The isolated modulator allows direct measurement
of motor phase currents in power inverters.
Symbol Description Symbol Description
1: VDD1 Supply voltage input (4.5 V to 5.5 V)
2: VIN+ Positive input (± 200 mV recommended)
3: VIN- Negative input (normally connected to GND1)
4: GND1 Input ground
5: GND2 Output ground
6: MDAT Serial data output
7: MCLK Clock output (10 MHz typical)
8: VDD2 Supply voltage input (4.5 V to 5.5 V)
A8740:
The HCPL-7860/HCPL-786J Optically Isolated Modulator
and HCPL-0872 Digital Interface IC or digital filter together
form an isolated programmable two-chip analog-to-digital
converter. The isolated modulator allows direct measurement
of motor phase currents in power inverters.
1: VDD1 Supply voltage input (4.5 V to 5.5 V)
2: VIN+ Positive input (± 200 mV recommended)
3: VIN- Negative input (normally connected to GND1)
4: GND1 Input ground
5: GND2 Output ground
6: V0UT+
7: VOUT-
8: VDD2 Supply voltage input (4.5 V to 5.5 V)
Supply Voltages VDD1, VDD2 0.0 5.5 V
Steady-State Input Voltage VIN+, VIN- -2.0 VDD1 +0.5 V
2 Second Transient Input Voltage -6.0
Output Voltages VOUT+, VOUT- -0.5
VDD2 +0.5 V
温馨提示：答案为网友推荐，仅供参考
第1个回答 2017-12-02
不行，不行不行，
