ISL71840SEH Datasheet, PDF (1/27 Pages) Intersil Corporation – Radiation Hardened 30V 16-Channel Analog

DATASHEET
Radiation Hardened 30V 16-Channel Analog
Multiplexer
ISL71840SEH
The ISL71840SEH is a radiation hardened, 16-channel high
ESD protected multiplexer that is fabricated using Intersil’s
proprietary P6SOI (Silicon On Insulator) process technology to
mitigate single-event effects and total ionizing dose. It
operates with a dual supply voltage ranging from ±10.8V to
±16.5V. It has a 4-bit address plus an enable pin that can be
driven with adjustable logic thresholds to conveniently select 1
of 16 available channels. An inactive channel is separated
from an active channel by a high impedance, which inhibits
any interaction between them.
The ISL71840SEH’s low r_ON allows for improved signal
integrity and reduced power losses. The ISL71840SEH is also
designed for cold sparing making it excellent for high reliability
applications that have redundancy requirements. It is
designed to provide a high impedance to the analog source in
a powered off condition, making it easy to add additional
backup devices without loading signal sources. The
ISL71840SEH also incorporates input analog overvoltage
protection, which will disable the switch to protect downstream
devices.
The ISL71840SEH is available in a 28 Ld CDFP or die form and
operates across the extended temperature range of -55°C to
+125°C.
There is also a 32-channel version available offered in a 48 Ld
CQFP, please refer to the ISL71841SEH datasheet for more
information. For a list of differences please refer to Table 1 on
page 3.
Related Literature
• UG028, “ISL71840SEHEV1Z Evaluation Board User Guide”
• TR004, “Single Event Effects (SEE) Testing of the
ISL71840SEH 16:1 30V Mux”
• TR010, “Total Dose Testing of the ISL71840SEH 16-Channel
Analog Multiplexer”
Features
• DLA SMD# 5962-15219
• Fabricated using P6SOI process technology
- Provides latch-up immunity
• ESD protection 8kV (HBM)
• Rail-to-rail operation
• Overvoltage protection
• Low r_ON. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . <500Ω (typical)
• Flexible split rail operation
- Positive supply above GND (V⁺) . . . . . . . +10.8V to +16.5V
- Negative supply below GND (V^-) . . . . . . . . -10.8V to -16.5V
• Adjustable logic threshold control with VREF pin
• Cold sparing capable (from ground). . . . . . . . . . . . . . . . .±25V
• Analog overvoltage range (from ground) . . . . . . . . . . . . .±35V
• Off switch leakage . . . . . . . . . . . . . . . . . . . 100nA (maximum)
• Transition times (t_R, t_F) . . . . . . . . . . . . . . . . . . . 500ns (typical)
• Break-before-make switching
• Grounded metal lid (internally connected)
• Operating temperature range. . . . . . . . . . . .-55°C to +125°C
• Radiation tolerance
- High dose rate (50-300rad(Si)/s). . . . . . . . . . . 100krad(Si)
- Low dose rate (0.01rad(Si)/s) . . . . 100krad(Si) (see Note)
- SEB LET_TH . . . . . . . . . . . . . . . . . . . . . . . . . 86.4MeV•cm²/mg
NOTE: Product capability established by initial characterization. All
subsequent lots are assurance tested to 50krad (0.01rad(Si)/s)
wafer-by-wafer.
ISL71840SEH
IN01
IN02
IN03
.
OUT
ADC
.
.
IN16
4
ADDRESS
EN
FIGURE 1. TYPICAL APPLICATION
June 9, 2016
1
FN8734.3
600
500
400 +25°C
+125°C
300
200
100
-55°C
0-20 _{-15 -10 -5}
0
5
10 15 20
SWITCH INPUT VOLTAGE (V)
FIGURE 2. r_DS(ON) vs POWER SUPPLY ACROSS SWITCH INPUT
COMMON-MODE VOLTAGE AT +25°C
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
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