RHD5950 Datasheet, PDF (1/8 Pages) Aeroflex Circuit Technology – RadHard-by-Design RHD5950 16-Channel Multiplexed 14-Bit Analog-to-Digital Converter

Standard Products
RadHard-by-Design
Datasheet
RHD5950 16-Channel Multiplexed
14-Bit Analog-to-Digital Converter
www.aeroflex.com/RHDseries
January 14, 2016
FEATURES
 Single power supply operation 5.0V or Dual power supply for 3.3V I/O
 Radiation performance
- Total dose:
> 100krad(Si); Dose rate = 50 - 300 rads(Si)/s
- ELDRS Immune
- SEL Immune
- Neutron Displacement Damage
> 100 MeV-cm²/mg
> 10¹⁴ neutrons/cm²
 16-Channel Input Multiplexer
 Successive Approximation A-to-D
 Level Shifting Digital Output Drivers allow interfaces to 5.0 or 3.3 volt logic
 Tri-State digital outputs
 Power Down (Sleep) mode
 Single or continuous conversion
 20us conversion period (20 clocks @ 1MHz Clock rate)
 Multiplexer address is latched on first clock rising edge of a cycle
 Busy and End-of-Conversion status outputs
 Full military temperature range
 Designed for aerospace and high reliability space applications
 Packaging – Hermetic Ceramic
- 48 leads, 0.700"Sq x 0.125"Ht quad flat pack
- Weight - 6 grams max
 Aeroflex Plainview’s Radiation Hardness Assurance Plan is DLA Certified to MIL-PRF-38534, Appendix G.
GENERAL DESCRIPTION
Aeroflex’s RHD5950 is a radiation hardened, single supply, 16-Channel Multiplexed Analog-to-Digital
converter in a 48-pin Ceramic Quad Flat Package. The RHD5950 design uses specific circuit topology and
layout methods to mitigate total ionizing dose effects and single event latchup. It is guaranteed operational
from -55°C to +125°C. Available screened in accordance with MIL-PRF-38534 Class K, the RHD5950 is
ideal for demanding military and space applications.
ORGANIZATION AND APPLICATION
The RHD5950 takes 16 analog sensor signals and using 4 address inputs and an enable input, selects one of
the 16 analog inputs and performs a 14-bit successive approximation analog-to-digital conversion in a
nominal period of 20 clock cycles (20uS nominal). The 14-bit digital output has a tri-state control allowing
the connection of multiple RHD5950s. This provides the ability to interface many sensor voltage readings
to the digital processor data bus. The full-scale range is determined by reference input voltages. The input
impedance of the reference/span terminals is typically a constant 4K ohms.
SCD5950 Rev G