DATASHEET
ISL70444SEH, ISL73444SEH
19MHz Radiation Hardened 40V Quad Rail-to-Rail Input - Output,
Low-Power Operational Amplifiers
FN8411
Rev.8.1
Apr 15, 2021
The ISL70444SEH and ISL73444SEH (ISL7x444SEH) feature
Features
four low-power amplifiers optimized to provide maximum
dynamic range. These operational amplifiers (op amps)
feature a unique combination of rail-to-rail operation on the
input and output as well as a slew enhanced front-end that
provides ultra fast slew rates positively proportional to a given
step size, thereby increasing accuracy under transient
conditions, whether it’s periodic or momentary. The
ISL7x444SEH also offer low power, low offset voltage, and low
temperature drift, making them ideal for applications
requiring both high DC accuracy and AC performance. With
<5µs recovery for Single Event Transients (SET)
(LETTH = 86.4MeV•cm2/mg), the number of filtering
components needed is drastically reduced. The ISL7x444SEH
are also immune to single event latch-up because they are
fabricated using the Renesas proprietary PR40 Silicon On
Insulator (SOI) process.
• Electrically screened to DLA SMD# 5962-13214
• Acceptance tested to 50krad(Si) (LDR) wafer-by-wafer
• <5µs recovery from SEE (LETTH = 86.4MeV•cm2/mg)
• Unity gain stable
• Rail-to-rail input and output
• Wide gain·bandwidth product . . . . . . . . . . . . . . . . . . . . 19MHz
• Wide single and dual supply range. . . . . . . . 2.7V to 40V max
• Low input offset voltage . . . . . . . . . . . . . . . . . . . . . . . . . 400µV
• Low current consumption (per amplifier) . . . . . . . 1.1mA, typ
• No phase reversal with input overdrive
• Slew rate
- Large signal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60V/µs
The amplifiers are designed to operate over a single supply
range of 2.7V to 40V or a split supply voltage range of ±1.35V to
±20V. Applications for these amplifiers include precision
instrumentation, data acquisition, precision power supply
controls, and process controls.
• Operating temperature range. . . . . . . . . . . .-55°C to +125°C
• ISL70444SEH radiation acceptance (see TID report)
- High dose rate (50-300rad(Si)/s). . . . . . . . . . . 300krad(Si)
- Low dose rate (0.01rad(Si)/s) . . . . . . . . . . . . . . .50krad(Si)
• ISL73444SEH radiation acceptance (see TID report)
- Low dose rate (0.01rad(Si)/s) . . . . . . . . . . . . . . .50krad(Si)
• SEE hardness (see SEE report for details)
The ISL7x444SEH are available in a 14 Ld hermetic ceramic
flatpack and die forms that operate across the temperature
range of -55°C to +125°C.
- SEB LETTH (VS = ±21V). . . . . . . . . . . . . . 86.4MeV•cm2/mg
- SEL immune (SOI Process)
Applications
• Precision instruments
• Active filter blocks
• Data acquisition
• Power supply control
• Process control
R
F
100kΩ
30
+2.7V
to 40V
R
-
IN
-IN
V ±18V
S
-
V
+
20
10
OUT
+
10kΩ
V
R
ISL7x444
SENSE
-
R
+
V
IN
+IN
+
V
= 10
OUT
0
10kΩ
GROUNDED
BIASED
(I
* R
)
SENSE
LOAD
R
+
REF
-10
-20
-30
LOAD
100kΩ
V
REF
0
50
100
150
200
250
300
krad (Si)
FIGURE 1. TYPICAL APPLICATION: SINGLE-SUPPLY, HIGH-SIDE
CURRENT SENSE AMPLIFIER
FIGURE 2. VOS SHIFT vs HIGH DOSE RATE RADIATION
FN8411 Rev.8.1
Apr 15, 2021
Page 1 of 25
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