LX7730

Production Datasheet LX7730 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 PolarFire, 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 13kHz. 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 complementary 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 communication 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 communicate at a speed of up to 25Mword/s. The second option is a pair of 12.5Mbit/s SPI interfaces that support redundant communication 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...