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Número de pieza | ACT8512 | |
Descripción | 48-Channel Analog Multiplexer Module | |
Fabricantes | Aeroflex Circuit Technology | |
Logotipo | ||
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ACT8512 48-Channel Analog Multiplexer Module
Radiation Tolerant & ESD Protected
www.aeroflex.com/mux
November 14, 2008
FEATURES
❑ 48 channels provided by six 16-channel multiplexers
❑ Radiation performance
- Total dose:
- SEU:
150 krads(Si), Dose rate = 50 - 300 rads(Si)/s
Immune up to 90 MeV-cm2/mg
- SEL:
Immune by process design
❑ Full military temperature range
❑ Low power consumption < 90mW
❑ One address bus (A0-3) and three enable lines afford flexible organization
❑ All channel inputs protected by ±20V nominal transorbs
❑ Fast access time < 500ns typical
❑ Break-Before-Make switching
❑ High analog input impedance (power on or off)
❑ Designed for aerospace and high reliability space applications
❑ Packaging – Hermetic ceramic
- 96 leads, 1.32"Sq x 0.20"Ht quad flat pack
- Typical Weight 15 grams
❑ 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
1 page TRUTH TABLE (CH0 – CH15)
A3 A2 A1 A0 EN(0-15) "ON" CHANNEL 1/
XXXX
H
NONE
LLLL
L
CH0
L L LH
L
CH1
L LHL
L
CH2
L LHH
L
CH3
LHL L
LHLH
L HH L
L HHH
HL L L
HL LH
L
L
L
L
L
L
CH4
CH5
CH6
CH7
CH8
CH9
HLHL
L
CH10
H L HH
L
CH11
HHL L
L
CH12
HH L H
L
CH13
HHH L
L
CH14
HHHH
L
CH15
1/ Between CH0-15 and OUTPUT (0-15) and CURRENT (0-15).
TRUTH TABLE (CH16 – CH31)
A3 A2 A1 A0 EN(16-31) "ON" CHANNEL 1/
XXXX
H
NONE
LLLL
L
CH16
L L LH
L
CH17
L LHL
L
CH18
L LHH
L
CH19
LHL L
LHLH
L HH L
L HHH
HL L L
HL LH
L
L
L
L
L
L
CH20
CH21
CH22
CH23
CH24
CH25
HLHL
L
CH26
H L HH
L
CH27
HHL L
L
CH28
HH L H
L
CH29
HHH L
L
CH30
HHHH
L
CH31
1/ Between CH16-31 and OUTPUT (16-31) and CURRENT (16-31).
TRUTH TABLE (CH32 – CH47)
A3 A2 A1 A0 EN(32-47) "ON" CHANNEL 1/
XXXX
LLLL
L L LH
L LHL
L LHH
LHL L
LHLH
L HH L
L HHH
HL L L
HL LH
HLHL
H L HH
HHL L
HH L H
HHH L
HHHH
H
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
NONE
CH32
CH33
CH34
CH35
CH36
CH37
CH38
CH39
CH40
CH41
CH42
CH43
CH44
CH45
CH46
CH47
1/ Between CH32-47 and OUTPUT (32-47) and CURRENT (32-47)
SCD8512 Rev D 11/14/08
5
Aeroflex Plainview
5 Page |
Páginas | Total 8 Páginas | |
PDF Descargar | [ Datasheet ACT8512.PDF ] |
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