Standard Products
ACT8512 48-Channel Analog Multiplexer Module
Radiation Tolerant & ESD Protected
www.aeroflex.com/mux
November 14, 2008
FEATURES
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48 channels provided by six 16-channel multiplexers
Radiation performance
- Total dose:
150 krads(Si), Dose rate = 50 - 300 rads(Si)/s
- SEU:
Immune up to 90 MeV-cm2/mg
- SEL:
Immune by process design
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Full military temperature range
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Low power consumption < 90mW
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One address bus (A0-3) and three enable lines afford flexible organization
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All channel inputs protected by ±20V nominal transorbs
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Fast access time < 500ns typical
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Break-Before-Make switching
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High analog input impedance (power on or off)
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Designed for aerospace and high reliability space applications
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Packaging – Hermetic ceramic
- 96 leads, 1.32"Sq x 0.20"Ht quad flat pack
- Typical Weight 15 grams
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DSCC 5962-09203 SMD pending
Note: Aeroflex Plainview does not currently have a DSCC certified Radiation Hardened Assurance Program.
GENERAL DESCRIPTION
Aeroflex’s ACT8512 is a radiation tolerant, 48 channel multiplexer MCM (multi-chip module) with
electrostatic discharge (ESD) protection on all channel inputs.
The ACT8512 has been specifically designed to meet exposure to radiation environments. The multiplexer
is available in a 96 lead High Temperature Co-Fired Ceramic (HTCC) Quad Flatpack (CQFP). It is
guaranteed operational from -55°C to +125°C. Available screened in accordance with MIL-PRF-38534,
the ACT8512 is ideal for demanding military and space applications.
ORGANIZATION AND APPLICATION
The ACT8512 consists of six 16 channel multiplexers arranged as shown in the Block Diagram. The
ACT8512 design is inherently radiation tolerant.
The ACT8512 consists of forty-eight (48) channels addressable by bus A0~A3 in three 16 channel blocks,
each block enabled separately. Each block connects the addressed channel to two outputs, "Output" and
"Current". This technique enables selecting and reading a remote resistive sensor without the MUX
resistance being part of the measurement. For grounded sensors, this is done by passing current to the
sensor by means of the "Current" pin and reading the resultant voltage (proportional to the sensor
resistance) at the "Output" pin.
SCD8512 Rev D
