器件名称: HCPL-0870
功能描述: Isolated 15-bit A/D Converter
文件大小: 346.64KB 共28页
简 介:H
Isolated 15-bit A/D Converter Technical Data
HCPL-7860 HCPL-0870, -7870
Features
12-bit Linearity 700 ns Conversion Time (Pre-Trigger Mode 2) 5 Conversion Modes for Resolution/Speed Trade-Off; 12-bit Effective Resolution with 18 s Signal Delay (14-bit with 94 s) Fast 3 s Over-Range Detection Serial I/O (SPI, QSPI and Microwire Compatible) ± 200 mV Input Range with Single 5 V Supply 1% Internal Reference Voltage Matching Offset Calibration -40 °C to +85 °C Operating Temperature Range 15 kV/s Isolation Transient Immunity Regulatory Approvals; UL, CSA, VDE
DIGITAL CURRENT SENSOR
+ ISOLATION BOUNDARY +
OUTPUT DATA
INPUT CURRENT
ISOLATED MODULATOR
DIGITAL INTERFACE IC
Hewlett-Packard’s Isolated A/D Converter delivers the reliability, small size, superior isolation and over-temperature performance motor drive designers need to accurately measure current at half the price of traditional solutions.
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.
SPI and QSPI are trademarks of Motorola Corp. Microwire is a trademark of National Semiconductor Inc.
1-260
MICRO-CONTROLLER
HP7860 YYWW
HPx870 YYWW
5965-5255E
Digital Current Sensing Circuit
As shown in Figure 1, using the Isolated 2-chip A/D converter to sense current can be as simple as connecting a current-sensing resistor, or shunt, to the input and reading output data through the 3-wire ……
