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Microsemi Corporation - 64 Analog Input RAD Tolerant Telemetry Controller

Numéro de référence LX7730MFQ-EV
Description 64 Analog Input RAD Tolerant Telemetry Controller
Fabricant Microsemi Corporation 
Logo Microsemi Corporation 





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LX7730MFQ-EV fiche technique
Preliminary Datasheet
LX7730
64 Analog Input RAD Tolerant Telemetry
Controller
Description
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 25kHz. 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.
The LX7730 is register programmable with 17
addressable eight bit registers. Two options are
available for communication with the host FPGA. First
there is an eight bit parallel bus with 5 address bits and a
read/write bit that can communicate at a speed of up to
25MHz. The second option is a pair of 50MBPS SPI
interfaces that can support redundant (alternating not
simultaneous) communication to two different hosts.
The LX7730 offers 1 kV ESD pin protection on all CH#
pins and 2kV on the other pins. The dielectric isolated
process is failsafe. 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 controller is designed for use in rugged
environments. It is packaged in a 132 pin ceramic quad
flat pack and operates over a -55°C to 125°C
temperature range. It is radiation tolerant to 100krad TID
and 50krad ELDRs as well as Single event latch up.
Features
64 channel MUX
Break-before-make switching
25kSPS 12 bit ADC
2% Precision Adjustable Current Source
1% Precision 5.00V Source
Threshold Monitoring
8 x Bi-level Logic
10 bit DAC
Parallel or Dual SPI Interface
Radiation Tolerant: 100krad TID, 50kad ELDRS
Applications
Spacecraft Health Monitoring
Attitude Control
Payload Equipment
Main power
Internal LDOs
and Charge
Pump
VREF
Parallel
SPI_A
FPGA
SPI_B
Parallel
Interface
and
Registers
8 Current
Levels
12 Bit
ADC
64
Channel
Sensor
+ MUX
- Level Detect
8 Bit
DAC
10 Bit Current
DAC
+ 8 Bi-Level Inputs
- 2.5V
LX7730
Figure 1 · Product Highlight
LX7730 rev 0.9.2
©2015 Microsemi
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