[原创] Microsemi LX7730耐辐射航天器遥测管理解决方案

Microsemi公司的LX7730是具有FPGA伴侣功能的航天器遥测管理集成电路,包括有64个通用输入的复接器,可配置单端或差分传感器输入的混合器.可编电流源(精度3%)可直接指向64个通用输入端的任一个,而通用输入端可用12位ADC以速率13kHz取样,支持并行或双SPI接口,工作温度-55°C到125°C,耐辐射容差100krad TID, 50kad ELDR,主要用在航天器健康监视,高度控制和有效载荷装备.本文介绍了LX7730主要特性,高等级框图,典型应用电路和LX7730评估板主要特性于电路图.

 The LX7730 is a spacecraft telemetry manager IC that functions as a companion to the FPGA. The LX7730 contains a 64 universal input multiplexer that can be configured as a mix of differential or single ended sensor inputs. There is a programmable current source that can be directed to any of the 64 universal inputs. The universal inputs can be sampled with a 12 bit analog-to-digital converter at a sample rate up to 13kHz. The universal inputs can also function as variable bi-level inputs with the threshold set by an internal 8 bit digital-to-analog converter. There is an additional 10 bit digital-to- analog current DAC with complementary outputs. Finally there are 8 fixed threshold bi-level inputs.

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