Production Datasheet LX7730 64 Analog Input Telemetry Controller for Space Description Features The LX7730 is a spacecraft telemetry manager that is 64 channel analog input multiplexer radiation-hardened by design and works with either a Break-Before-Make switching space FPGA controller such as RTG4, RTAX-S/SL, and 13ksps 12-bit ADC RT PolarFire, or a space MCU such as SAMRH71F20, 1% precision 5V voltage reference SAMV71Q21RT, and SAM3X8ERT. 3% precision adjustable current source Threshold monitoring The LX7730 contains a 64 universal input multiplexer 8 bi-level analog inputs and logic outputs that can be configured for a mix of differential and/or 8 additional bi-level inputs from the multiplexer single ended sensor inputs. The internal programmable 10-bit DAC current source can be directed to any of the 64 universal Parallel interface or dual SPI interface inputs. The universal inputs can be acquired by the Radiation tolerant: 100krad(Si) TID, 50krad(Si) internal 12-bit ADC at a sample rate up to 13kHz. The ELDRS, SEL immune up to 87MeV.cm/mg and 8 universal inputs also function as variable bi-level inputs 125C (fluence of 10 particles/cm) with the threshold set by an internal 8-bit DAC. There is an additional 10-bit current DAC with complementary Applications outputs. Finally, there are 8 fixed threshold bi-level Spacecraft health monitoring inputs with logic outputs. Attitude control Payload equipment 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 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 55C to 125C temperature range, and are radiation tolerant to 100krad(Si) TID and 50krad(Si) ELDRs, as well as single Typical Telemetry System event effects. June 2020 LX7730 rev 2.4 1 2020 Microsemi Corporation 64 Analog Input Telemetry Controller for Space 1 CQFP-132 Pin Configuration and Pinout with Recommended Layout 1F 2.2F to +5V 0.47F 4.7F 2.2F VDD 1 99 AGND CLK 2 98 CH45 CE or SSA 3 97 CH44 OE or CLKA 4 96 CH43 WE or MOSI A 5 95 CH42 Digital GND A0 or MISO A 6 94 CH41 plane A1 or SSB 7 93 CH40 A2 or CLKB 8 92 CH39 A3 or MOSI B 9 91 CH38 A4 or MISO B 10 90 CH37 +5V 11 89 CH36 1F GND 12 88 CH35 Join analog AGND to digital GND plane between pins 12 & 13 only AGND 13 87 CH34 D0 14 86 CH33 D1 15 85 CH32 D2 16 84 CH31 D3 17 Analog AGND 83 CH30 plane D4 18 82 CH29 D5 19 81 CH28 D6 20 80 CH27 D7 21 79 CH26 PTY 22 78 CH25 ACK 23 77 CH24 RST 24 76 CH23 BLO1 25 75 CH22 BLO2 26 74 CH21 LX7730(L)MFQ BLO3 27 73 CH20 BLO4 28 72 CH19 BLO5 29 71 CH18 BLO6 30 70 CH17 BLO7 31 69 CH16 BLO8 32 68 CH15 AGND 33 67 AGND 20k 1% 1.5k 1% x2 7.87k, 0.1% 1F 158, 0.1% 2 Ordering Information Operating Shipping Package Type Package Part Number SMD Number Flow Temperature Type LX7730MFQ-V SMD5962-1721901VXC QML-V Hermetic LX7730MFQ-Q SMD5962-1721901QXC QML-Q CQFP Ceramic -55C LX7730LMFQ-EV TBD MIL-PRF-38535 Class V 132L to Tray LX7730LMFQ-EQ TBD MIL-PRF-38535 Class Q 125C Ceramic LX7730MFQ-ES - Engineering Samples QFP Plastic LX7730LMMF - JEDEC 208L June 2020 LX7730 rev 2.4 2 2020 Microsemi Corporation 132 IREF1 34 GND ADC BIAS IN 35 131 SPI B VREF 36 130 SPI A DAC P 37 129 PROGSUPPLY DAC N 38 128 TEST MODE ADC IN 39 127 EXT REF TEST 40 126 EXT VEE AGND 41 125 -2V ADC DAC OUT 42 124 VEE BL TH 43 123 NCP BLI8 44 122 PCP BLI7 45 121 VCC BLI6 46 120 GND BLI5 47 119 SE RTN BLI4 48 118 CH64 BLI3 49 117 CH63 BLI2 50 116 CH62 BLI1 51 115 CH61 AGND 52 114 CH60 CH1 53 113 CH59 CH2 54 112 CH58 CH3 55 111 CH57 CH4 56 110 CH56 CH5 57 109 CH55 CH6 58 108 CH54 CH7 59 107 CH53 CH8 60 106 CH52 CH9 61 105 CH51 CH10 62 104 CH50 CH11 63 103 CH49 CH12 64 102 CH48 CH13 65 101 CH47 CH14 66 100 CH46