LX7730 Datasheet | Microsemi

Production Datasheet 64 Analog Input Telemetry Controller for Space Description The LX7730 is a spacecraft telemetry manager that is radiation-hardened by design and works with either a space FPGA controller such as RTG4, RTAX-S/SL, and RT Polar Fire, or a space MCU such as SAMRH71F20, SAMV71Q21RT, and SAM3X8ERT. The LX7730 contains a 64 universal input multiplexer that can be configured for a mix of differential and/or single ended sensor inputs. The internal programmable current source can be directed to any of the 64 universal inputs. The universal inputs can be acquired by the internal 12-bit ADC at a sample rate up to 13k Hz. The universal inputs also function as variable bi-level inputs with the threshold set by an internal 8-bit DAC. There is an additional 10-bit current DAC with plementary outputs. Finally, there are 8 fixed threshold bi-level inputs with logic outputs. The LX7730 is register programmable with 17 addressable 8-bit registers. Two options are available for munication with the host system controller. First there is an 8-bit parallel bus with 5 address bits, a parity bit, and a read/write bit that can municate at a speed of up to 25Mword/s. The second option is a pair of 12.5Mbit/s SPI interfaces that support redundant munication to two different hosts. The LX7730 has enable registers that allow most of the device to be shut down to reduce power consumption, and supports cold sparing on its signal pins. The dielectric isolated process is failsafe. The LX7730LMFQ offers lower guaranteed operating and standby supply currents than the LX7730MFQ, as shown in the Electrical Characteristics. Operation is identical in all other respects. All other references to LX7730 in this data sheet apply to the LX7730LMFQ, LX7730MFQ, and LX7730LMMF. The LX7730(L)MFQ is packaged in a 132-pin hermetic ceramic quad flat pack. The LX7730LMMF is packaged in a lead-free 208 pin non-hermetic plastic quad flat pack. Both parts operate over a 55°C to...